Commit Graph

219 Commits

Author SHA1 Message Date
Arnaldo Carvalho de Melo 25ca7e5c0b tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  7e5b3c267d ("x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation")

Addressing these tools/perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

With this one will be able to use these new AMD MSRs in filters, by
name, e.g.:

  # perf trace -e msr:* --filter "msr==IA32_MCU_OPT_CTRL"
  ^C#

Using -v we can see how it sets up the tracepoint filters, converting
from the string in the filter to the numeric value:

  # perf trace -v -e msr:* --filter "msr==IA32_MCU_OPT_CTRL"
  Using CPUID GenuineIntel-6-8E-A
  0x123
  New filter for msr:read_msr: (msr==0x123) && (common_pid != 335 && common_pid != 30344)
  0x123
  New filter for msr:write_msr: (msr==0x123) && (common_pid != 335 && common_pid != 30344)
  0x123
  New filter for msr:rdpmc: (msr==0x123) && (common_pid != 335 && common_pid != 30344)
  mmap size 528384B
  ^C#

The updating process shows how this affects tooling in more detail:

  $ diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
  --- tools/arch/x86/include/asm/msr-index.h	2020-06-03 10:36:09.959910238 -0300
  +++ arch/x86/include/asm/msr-index.h	2020-06-17 10:04:20.235052901 -0300
  @@ -128,6 +128,10 @@
   #define TSX_CTRL_RTM_DISABLE		BIT(0)	/* Disable RTM feature */
   #define TSX_CTRL_CPUID_CLEAR		BIT(1)	/* Disable TSX enumeration */

  +/* SRBDS support */
  +#define MSR_IA32_MCU_OPT_CTRL		0x00000123
  +#define RNGDS_MITG_DIS			BIT(0)
  +
   #define MSR_IA32_SYSENTER_CS		0x00000174
   #define MSR_IA32_SYSENTER_ESP		0x00000175
   #define MSR_IA32_SYSENTER_EIP		0x00000176
  $ set -o vi
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2020-06-17 10:05:49.653114752 -0300
  +++ after	2020-06-17 10:06:01.777258731 -0300
  @@ -51,6 +51,7 @@
   	[0x0000011e] = "IA32_BBL_CR_CTL3",
   	[0x00000120] = "IDT_MCR_CTRL",
   	[0x00000122] = "IA32_TSX_CTRL",
  +	[0x00000123] = "IA32_MCU_OPT_CTRL",
   	[0x00000140] = "MISC_FEATURES_ENABLES",
   	[0x00000174] = "IA32_SYSENTER_CS",
   	[0x00000175] = "IA32_SYSENTER_ESP",
  $

The related change to cpu-features.h affects this:

  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
  CC       /tmp/build/perf/bench/mem-memset-x86-64-asm.o

This shouldn't be affecting that 'perf bench' entry:

  $ find tools/perf/ -type f | xargs grep SRBDS
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Gross <mgross@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-17 13:21:26 -03:00
Arnaldo Carvalho de Melo dd76c30295 tools headers UAPI: Sync kvm.h headers with the kernel sources
To pick the changes in:

  f97f5a56f5 ("x86/kvm/hyper-v: Add support for synthetic debugger interface")
  850448f35a ("KVM: nVMX: Fix VMX preemption timer migration")
  2c4c413255 ("KVM: x86: Print symbolic names of VMX VM-Exit flags in traces")
  cc440cdad5 ("KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE")
  f7d31e6536 ("x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit")
  72de5fa4c1 ("KVM: x86: announce KVM_FEATURE_ASYNC_PF_INT")
  acd05785e4 ("kvm: add capability for halt polling")
  3ecad8c2c1 ("docs: fix broken references for ReST files that moved around")

That do not result in any change in tooling, as the additions are not
being used in any table generator.

This silences these perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h'
  diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h
  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h' differs from latest version at 'arch/x86/include/uapi/asm/vmx.h'
  diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Matlack <dmatlack@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jon Doron <arilou@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Shier <pshier@google.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-09 12:40:04 -03:00
Arnaldo Carvalho de Melo 7e579f3a07 tools arch x86 uapi: Synch asm/unistd.h with the kernel sources
To pick up the change in:

  700d3a5a66 ("x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long"")

That doesn't trigger any changes in tooling and silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/unistd.h' differs from latest version at 'arch/x86/include/uapi/asm/unistd.h'
  diff -u tools/arch/x86/include/uapi/asm/unistd.h arch/x86/include/uapi/asm/unistd.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-09 12:40:03 -03:00
Linus Torvalds 3b69e8b457 Fix for arch/sh build regression with newer binutils, removal of SH5,
fixes for module exports, and misc cleanup.
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Merge tag 'sh-for-5.8' of git://git.libc.org/linux-sh

Pull arch/sh updates from Rich Felker:
 "Fix for arch/sh build regression with newer binutils, removal of SH5,
  fixes for module exports, and misc cleanup"

* tag 'sh-for-5.8' of git://git.libc.org/linux-sh:
  sh: remove sh5 support
  sh: add missing EXPORT_SYMBOL() for __delay
  sh: Convert ins[bwl]/outs[bwl] macros to inline functions
  sh: Convert iounmap() macros to inline functions
  sh: Add missing DECLARE_EXPORT() for __ashiftrt_r4_xx
  sh: configs: Cleanup old Kconfig IO scheduler options
  arch/sh: vmlinux.scr
  sh: Replace CONFIG_MTD_M25P80 with CONFIG_MTD_SPI_NOR in sh7757lcr_defconfig
  sh: sh4a: Bring back tmu3_device early device
2020-06-06 15:22:01 -07:00
Linus Torvalds 38b3a5aaf2 perf tools for v5.8:
- Further Intel PT call-trace fixes
 
  - Improve SELinux docs and tool warnings
 
  - Fix race at exit in 'perf record' using eventfd.
 
  - Add missing build tests to the default set of 'make -C tools/perf build-test'
 
  - Sync msr-index.h getting new AMD MSRs to decode and filter in 'perf trace'.
 
  - Fix fallback to libaudit in 'perf trace' for arches not using per-arch *.tbl files.
 
  - Fixes for 'perf ftrace'.
 
  - Fixes and improvements for the 'perf stat' metrics.
 
  - Use dummy event to get PERF_RECORD_{FORK,MMAP,etc} while synthesizing
    those metadata events for pre-existing threads.
 
  - Fix leaks detected using clang tooling.
 
  - Improvements to PMU event metric testing.
 
  - Report summary for 'perf stat' interval mode at the end, summing up
    all the intervals.
 
  - Improve pipe mode, i.e. this now works as expected, continuously
    dumping samples:
 
     # perf record -g -e raw_syscalls:sys_enter | perf --no-pager script
 
  - Fixes for event grouping, detecting incompatible groups such as:
 
      # perf stat -e '{cycles,power/energy-cores/}' -v
      WARNING: group events cpu maps do not match, disabling group:
        anon group { power/energy-cores/, cycles }
          power/energy-cores/: 0
          cycles: 0-7
 
  - Fixes for 'perf probe': blacklist address checking, number of
    kretprobe instances, etc.
 
  - JIT processing improvements and fixes plus the addition of a 'perf
    test' entry for the java demangler.
 
  - Add support for synthesizing first/last level cache, TLB and remove
    access events from HW tracing in the auxtrace code, first to use is
    ARM SPE.
 
  - Vendor events updates and fixes, including for POWER9 and Intel.
 
  - Allow using ~/.perfconfig for removing the ',' separators in 'perf
    stat' output.
 
  - Opt-in support for libpfm4.
 
 =================================================================================
 
 Adrian Hunter (8):
   perf intel-pt: Use allocated branch stack for PEBS sample
   perf symbols: Fix debuginfo search for Ubuntu
   perf kcore_copy: Fix module map when there are no modules loaded
   perf evlist: Disable 'immediate' events last
   perf script: Fix --call-trace for Intel PT
   perf record: Respect --no-switch-events
   perf intel-pt: Refine kernel decoding only warning message
   perf symbols: Fix kernel maps for kcore and eBPF
 
 Alexey Budankov (3):
   perf docs: Extend CAP_SYS_ADMIN with CAP_PERFMON where needed
   perf tool: Make perf tool aware of SELinux access control
   perf docs: Introduce security.txt file to document related issues
 
 Anand K Mistry (1):
   perf record: Use an eventfd to wakeup when done
 
 Andi Kleen (1):
   perf script: Don't force less for non tty output with --xed
 
 Arnaldo Carvalho de Melo (21):
   perf evsel: Rename perf_evsel__object_config() to evsel__object_config()
   perf evsel: Rename perf_evsel__resort*() to evsel__resort*()
   perf evsel: Rename perf_evsel__fprintf() to evsel__fprintf()
   perf evsel: Rename *perf_evsel__get_config_term() & friends to evsel__env()
   perf evsel: Rename perf_evsel__new*() to evsel__new*()
   perf evsel: Rename perf_evsel__[hs]w_cache* to evsel__[hs]w_cache*
   perf counts: Rename perf_evsel__*counts() to evsel__*counts()
   perf parse-events: Fix incorrect conversion of 'if () free()' to 'zfree()'
   perf evsel: Initialize evsel->per_pkg_mask to NULL in evsel__init()
   tools feature: Rename HAVE_EVENTFD to HAVE_EVENTFD_SUPPORT
   perf build: Group the NO_SYSCALL_TABLE logic
   perf build: Allow explicitely disabling the NO_SYSCALL_TABLE variable
   perf trace: Remove union from syscalltbl, all the fields are needed
   perf trace: Use zalloc() to make sure all fields are zeroed in the syscalltbl constructor
   perf trace: Grow the syscall table as needed when using libaudit
   perf build: Remove libaudit from the default feature checks
   perf build: Add NO_SYSCALL_TABLE=1 to the build tests
   perf build: Add NO_LIBCRYPTO=1 to the default set of build tests
   perf build: Add NO_SDT=1 to the default set of build tests
   perf build: Add a LIBPFM4=1 build test entry
   tools arch x86: Sync the msr-index.h copy with the kernel sources
 
 Changbin Du (2):
   perf ftrace: Trace system wide if no target is given
   perf ftrace: Detect workload failure
 
 Ed Maste (1):
   perf tools: Correct license on jsmn JSON parser
 
 Gustavo A. R. Silva (2):
   perf tools: Replace zero-length array with flexible-array
   perf branch: Replace zero-length array with flexible-array
 
 Ian Rogers (38):
   perf expr: Allow for unlimited escaped characters in a symbol
   perf metrics: Fix parse errors in cascade lake metrics
   perf metrics: Fix parse errors in skylake metrics
   perf expr: Allow ',' to be an other token
   perf expr: Increase max other
   perf expr: Parse numbers as doubles
   perf expr: Debug lex if debugging yacc
   perf metrics: Fix parse errors in power8 metrics
   perf metrics: Fix parse errors in power9 metrics
   perf expr: Print a debug message for division by zero
   perf evsel: Dummy events never triggers, no need to ask for PERF_SAMPLE_BRANCH_STACK
   perf record: Add dummy event during system wide synthesis
   perf c2c: Fix 'perf c2c record -e list' to show the default events used
   perf evsel: Fix 2 memory leaks
   perf expr: Test parsing of floating point numbers
   perf expr: Fix memory leaks in metric bison
   perf parse-events: Make add PMU verbose output clearer
   perf test: Provide a subtest callback to ask for the reason for skipping a subtest
   perf test: Improve pmu event metric testing
   perf trace: Fix the selection for architectures to generate the errno name tables
   perf beauty: Allow the CC used in the arch errno names script to acccept CFLAGS
   perf tools: Grab a copy of libbpf's hashmap
   perf expr: Migrate expr ids table to a hashmap
   perf metricgroup: Make 'evlist_used' variable a bitmap instead of array of bools
   perf expr: Allow numbers to be followed by a dot
   perf metricgroup: Free metric_events on error
   perf metricgroup: Always place duration_time last
   perf metricgroup: Use early return in add_metric
   perf metricgroup: Delay events string creation
   perf metricgroup: Order event groups by size
   perf metricgroup: Remove duped metric group events
   perf metricgroup: Add options to not group or merge
   perf metricgroup: Remove unnecessary ',' from events
   perf list: Add metrics to command line usage
   tools compiler.h: Add attribute to disable tail calls
   perf tests: Don't tail call optimize in unwind test
   perf test: Initialize memory in dwarf-unwind
   perf libdw: Fix off-by 1 relative directory includes
 
 Jin Yao (6):
   perf parse-events: Use strcmp() to compare the PMU name
   perf stat: Fix wrong per-thread runtime stat for interval mode
   perf counts: Reset prev_raw_counts counts
   perf stat: Copy counts from prev_raw_counts to evsel->counts
   perf stat: Save aggr value to first member of prev_raw_counts
   perf stat: Report summary for interval mode
 
 Jiri Olsa (13):
   perf tools: Do not display extra info when there is nothing to build
   perf tools: Do not seek in pipe fd during tracing data processing
   perf session: Try to read pipe data from file
   perf callchain: Setup callchain properly in pipe mode
   perf script: Enable IP fields for callchains
   perf tools: Fix is_bpf_image function logic
   perf trace: Fix compilation error for make NO_LIBBPF=1 DEBUG=1
   perf stat: Fix duration_time value for higher intervals
   perf stat: Fail on extra comma while parsing events
   perf tests: Consider subtests when searching for user specified tests
   perf stat: Do not pass avg to generic_metric
   perf parse: Add 'struct parse_events_state' pointer to scanner
   perf stat: Ensure group is defined on top of the same cpu mask
 
 Li Bin (1):
   perf util: Fix potential SEGFAULT in put_tracepoints_path error path
 
 Masami Hiramatsu (4):
   perf probe: Accept the instance number of kretprobe event
   perf probe: Fix to check blacklist address correctly
   perf probe: Check address correctness by map instead of _etext
   perf probe: Do not show the skipped events
 
 Nick Gasson (6):
   perf jvmti: Fix jitdump for methods without debug info
   perf jvmti: Do not report error when missing debug information
   perf tests: Add test for the java demangler
   perf jvmti: Fix demangling Java symbols
   perf jvmti: Remove redundant jitdump line table entries
   perf jit: Fix inaccurate DWARF line table
 
 Paul A. Clarke (5):
   perf stat: Increase perf metric output resolution
   perf vendor events power9: Add missing metrics to POWER9 'cpi_breakdown'
   perf stat: POWER9 metrics: expand "ICT" acronym
   perf script: Better align register values in dump
   perf config: Add stat.big-num support
 
 Ravi Bangoria (1):
   perf powerpc: Don't ignore sym-handling.c file
 
 Stephane Eranian (1):
   perf tools: Add optional support for libpfm4
 
 Tan Xiaojun (3):
   perf tools: Move arm-spe-pkt-decoder.h/c to the new dir
   perf auxtrace: Add four itrace options
   perf arm-spe: Support synthetic events
 
 Tiezhu Yang (1):
   perf tools: Remove some duplicated includes
 
 Wang ShaoBo (1):
   perf bpf-loader: Add missing '*' for key_scan_pos
 
 Xie XiuQi (1):
   perf util: Fix memory leak of prefix_if_not_in
 
 =================================================================================
 
 Test results:
 
 The first ones are container based builds of tools/perf with and without libelf
 support.  Where clang is available, it is also used to build perf with/without
 libelf, and building with LIBCLANGLLVM=1 (built-in clang) with gcc and clang
 when clang and its devel libraries are installed.
 
 The objtool and samples/bpf/ builds are disabled now that I'm switching from
 using the sources in a local volume to fetching them from a http server to
 build it inside the container, to make it easier to build in a container cluster.
 Those will come back later.
 
 Several are cross builds, the ones with -x-ARCH and the android one, and those
 may not have all the features built, due to lack of multi-arch devel packages,
 available and being used so far on just a few, like
 debian:experimental-x-{arm64,mipsel}.
 
 The 'perf test' one will perform a variety of tests exercising
 tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
 with a variety of command line event specifications to then intercept the
 sys_perf_event syscall to check that the perf_event_attr fields are set up as
 expected, among a variety of other unit tests.
 
 Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
 with a variety of feature sets, exercising the build with an incomplete set of
 features as well as with a complete one. It is planned to have it run on each
 of the containers mentioned above, using some container orchestration
 infrastructure. Get in contact if interested in helping having this in place.
 
 Ubuntu 19.10 is failing when linking against libllvm, which isn't the default,
 needs to be investigated, haven't tested with CC=gcc, but should be the same
 problem:
 
 + make ARCH= CROSS_COMPILE= EXTRA_CFLAGS= LIBCLANGLLVM=1 -C /git/linux/tools/perf O=/tmp/build/perf CC=clang
 
 ...
 /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_ignoringImpCasts0Matcher::matches(clang::Expr const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
 (.text._ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x43): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const'
 /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_hasLoopVariable0Matcher::matches(clang::CXXForRangeStmt const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
 (.text._ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x48): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const'
 ...
 
   # export PERF_TARBALL=http://192.168.124.1/perf/perf-5.7.0-rc7.tar.xz
   # time dm
    1 alpine:3.4                    : Ok   gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final)
    2 alpine:3.5                    : Ok   gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final)
    3 alpine:3.6                    : Ok   gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final)
    4 alpine:3.7                    : Ok   gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0)
    5 alpine:3.8                    : Ok   gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.1 (tags/RELEASE_501/final) (based on LLVM 5.0.1)
    6 alpine:3.9                    : Ok   gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 5.0.1 (tags/RELEASE_502/final) (based on LLVM 5.0.1)
    7 alpine:3.10                   : Ok   gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 8.0.0 (tags/RELEASE_800/final) (based on LLVM 8.0.0)
    8 alpine:3.11                   : Ok   gcc (Alpine 9.2.0) 9.2.0, Alpine clang version 9.0.0 (https://git.alpinelinux.org/aports f7f0d2c2b8bcd6a5843401a9a702029556492689) (based on LLVM 9.0.0)
    9 alpine:3.12                   : Ok   gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (https://gitlab.alpinelinux.org/alpine/aports.git 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
   10 alpine:edge                   : Ok   gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (git://git.alpinelinux.org/aports 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
   11 alt:p8                        : Ok   x86_64-alt-linux-gcc (GCC) 5.3.1 20151207 (ALT p8 5.3.1-alt3.M80P.1), clang version 3.8.0 (tags/RELEASE_380/final)
   12 alt:p9                        : Ok   x86_64-alt-linux-gcc (GCC) 8.4.1 20200305 (ALT p9 8.4.1-alt0.p9.1), clang version 7.0.1
   13 alt:sisyphus                  : Ok   x86_64-alt-linux-gcc (GCC) 9.2.1 20200123 (ALT Sisyphus 9.2.1-alt3), clang version 10.0.0
   14 amazonlinux:1                 : Ok   gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final)
   15 amazonlinux:2                 : Ok   gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2)
   16 android-ndk:r12b-arm          : Ok   arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
   17 android-ndk:r15c-arm          : Ok   arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
   18 centos:5                      : Ok   gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
   19 centos:6                      : Ok   gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
   20 centos:7                      : Ok   gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
   21 centos:8                      : Ok   gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), clang version 8.0.1 (Red Hat 8.0.1-1.module_el8.1.0+215+a01033fb)
   22 clearlinux:latest             : Ok   gcc (Clear Linux OS for Intel Architecture) 9.3.1 20200501 releases/gcc-9.3.0-196-gcb2c76c8b1, clang version 10.0.0
   23 debian:8                      : Ok   gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0)
   24 debian:9                      : Ok   gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final)
   25 debian:10                     : Ok   gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final)
   26 debian:experimental           : FAIL gcc (Debian 9.3.0-13) 9.3.0, clang version 9.0.1-12
   27 debian:experimental-x-arm64   : Ok   aarch64-linux-gnu-gcc (Debian 9.3.0-8) 9.3.0
   28 debian:experimental-x-mips    : Ok   mips-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0
   29 debian:experimental-x-mips64  : Ok   mips64-linux-gnuabi64-gcc (Debian 9.3.0-8) 9.3.0
   30 debian:experimental-x-mipsel  : Ok   mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909
   31 fedora:20                     : Ok   gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
   32 fedora:22                     : Ok   gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.5.0 (tags/RELEASE_350/final)
   33 fedora:23                     : Ok   gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.7.0 (tags/RELEASE_370/final)
   34 fedora:24                     : Ok   gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1), clang version 3.8.1 (tags/RELEASE_381/final)
   35 fedora:24-x-ARC-uClibc        : Ok   arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
   36 fedora:25                     : Ok   gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1), clang version 3.9.1 (tags/RELEASE_391/final)
   37 fedora:26                     : Ok   gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), clang version 4.0.1 (tags/RELEASE_401/final)
   38 fedora:27                     : Ok   gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 5.0.2 (tags/RELEASE_502/final)
   39 fedora:28                     : Ok   gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 6.0.1 (tags/RELEASE_601/final)
   40 fedora:29                     : Ok   gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 7.0.1 (Fedora 7.0.1-6.fc29)
   41 fedora:30                     : Ok   gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), clang version 8.0.0 (Fedora 8.0.0-3.fc30)
   42 fedora:30-x-ARC-glibc         : Ok   arc-linux-gcc (ARC HS GNU/Linux glibc toolchain 2019.03-rc1) 8.3.1 20190225
   43 fedora:30-x-ARC-uClibc        : Ok   arc-linux-gcc (ARCv2 ISA Linux uClibc toolchain 2019.03-rc1) 8.3.1 20190225
   44 fedora:31                     : Ok   gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2), clang version 9.0.1 (Fedora 9.0.1-2.fc31)
   45 fedora:32                     : Ok   gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1), clang version 10.0.0 (Fedora 10.0.0-1.fc32)
   46 fedora:rawhide                : Ok   gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8), clang version 10.0.0 (Fedora 10.0.0-0.3.rc2.fc33)
   47 gentoo-stage3-amd64:latest    : Ok   gcc (Gentoo 9.2.0-r2 p3) 9.2.0
   48 mageia:5                      : Ok   gcc (GCC) 4.9.2, clang version 3.5.2 (tags/RELEASE_352/final)
   49 mageia:6                      : Ok   gcc (Mageia 5.5.0-1.mga6) 5.5.0, clang version 3.9.1 (tags/RELEASE_391/final)
   50 mageia:7                      : Ok   gcc (Mageia 8.3.1-0.20190524.1.mga7) 8.3.1 20190524, clang version 8.0.0 (Mageia 8.0.0-1.mga7)
   51 manjaro:latest                : Ok   gcc (GCC) 9.2.0, clang version 9.0.0 (tags/RELEASE_900/final)
   52 openmandriva:cooker           : Ok   gcc (GCC) 10.0.0 20200502 (OpenMandriva), clang version 10.0.1
   53 opensuse:15.0                 : Ok   gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538], clang version 5.0.1 (tags/RELEASE_501/final 312548)
   54 opensuse:15.1                 : Ok   gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
   55 opensuse:15.2                 : Ok   gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
   56 opensuse:42.3                 : Ok   gcc (SUSE Linux) 4.8.5, clang version 3.8.0 (tags/RELEASE_380/final 262553)
   57 opensuse:tumbleweed           : Ok   gcc (SUSE Linux) 9.3.1 20200406 [revision 6db837a5288ee3ca5ec504fbd5a765817e556ac2], clang version 10.0.0
   58 oraclelinux:6                 : Ok   gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1)
   59 oraclelinux:7                 : Ok   gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39.0.3)
   60 oraclelinux:8                 : Ok   gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5.0.3), clang version 9.0.1 (Red Hat 9.0.1-2.0.1.module+el8.2.0+5599+9ed9ef6d)
   61 ubuntu:12.04                  : Ok   gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
   62 ubuntu:14.04                  : Ok   gcc (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4
   63 ubuntu:16.04                  : Ok   gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609, clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
   64 ubuntu:16.04-x-arm            : Ok   arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   65 ubuntu:16.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   66 ubuntu:16.04-x-powerpc        : Ok   powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   67 ubuntu:16.04-x-powerpc64      : Ok   powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   68 ubuntu:16.04-x-powerpc64el    : Ok   powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   69 ubuntu:16.04-x-s390           : Ok   s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   70 ubuntu:18.04                  : Ok   gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0, clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
   71 ubuntu:18.04-x-arm            : Ok   arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
   72 ubuntu:18.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
   73 ubuntu:18.04-x-m68k           : Ok   m68k-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   74 ubuntu:18.04-x-powerpc        : Ok   powerpc-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   75 ubuntu:18.04-x-powerpc64      : Ok   powerpc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   76 ubuntu:18.04-x-powerpc64el    : Ok   powerpc64le-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   77 ubuntu:18.04-x-riscv64        : Ok   riscv64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   78 ubuntu:18.04-x-s390           : Ok   s390x-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   79 ubuntu:18.04-x-sh4            : Ok   sh4-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   80 ubuntu:18.04-x-sparc64        : Ok   sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   81 ubuntu:18.10                  : Ok   gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0, clang version 7.0.0-3 (tags/RELEASE_700/final)
   82 ubuntu:19.04                  : Ok   gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0, clang version 8.0.0-3 (tags/RELEASE_800/final)
   83 ubuntu:19.04-x-alpha          : Ok   alpha-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
   84 ubuntu:19.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0
   85 ubuntu:19.04-x-hppa           : Ok   hppa-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
   86 ubuntu:19.10                  : FAIL gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008, clang version 9.0.0-2 (tags/RELEASE_900/final)
   87 ubuntu:20.04                  : Ok   gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, clang version 10.0.0-4ubuntu1
   #
 
   It builds ok with the default set of options.
 
 The "7: Simple expression parser" entry is failing due to a bug in the
 hashmap in libbpf that will hit upstream via the bpf tree.
 
   # uname -a
   Linux five 5.5.17-200.fc31.x86_64 #1 SMP Mon Apr 13 15:29:42 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
   # git log --oneline -1
   3e9b26dc22 perf tools: Remove some duplicated includes
   # perf version --build-options
   perf version 5.7.rc7.g0affd0e5262b
                    dwarf: [ on  ]  # HAVE_DWARF_SUPPORT
       dwarf_getlocations: [ on  ]  # HAVE_DWARF_GETLOCATIONS_SUPPORT
                    glibc: [ on  ]  # HAVE_GLIBC_SUPPORT
                     gtk2: [ on  ]  # HAVE_GTK2_SUPPORT
            syscall_table: [ on  ]  # HAVE_SYSCALL_TABLE_SUPPORT
                   libbfd: [ on  ]  # HAVE_LIBBFD_SUPPORT
                   libelf: [ on  ]  # HAVE_LIBELF_SUPPORT
                  libnuma: [ on  ]  # HAVE_LIBNUMA_SUPPORT
   numa_num_possible_cpus: [ on  ]  # HAVE_LIBNUMA_SUPPORT
                  libperl: [ on  ]  # HAVE_LIBPERL_SUPPORT
                libpython: [ on  ]  # HAVE_LIBPYTHON_SUPPORT
                 libslang: [ on  ]  # HAVE_SLANG_SUPPORT
                libcrypto: [ on  ]  # HAVE_LIBCRYPTO_SUPPORT
                libunwind: [ on  ]  # HAVE_LIBUNWIND_SUPPORT
       libdw-dwarf-unwind: [ on  ]  # HAVE_DWARF_SUPPORT
                     zlib: [ on  ]  # HAVE_ZLIB_SUPPORT
                     lzma: [ on  ]  # HAVE_LZMA_SUPPORT
                get_cpuid: [ on  ]  # HAVE_AUXTRACE_SUPPORT
                      bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
                      aio: [ on  ]  # HAVE_AIO_SUPPORT
                     zstd: [ on  ]  # HAVE_ZSTD_SUPPORT
   # perf test
    1: vmlinux symtab matches kallsyms                       : Ok
    2: Detect openat syscall event                           : Ok
    3: Detect openat syscall event on all cpus               : Ok
    4: Read samples using the mmap interface                 : Ok
    5: Test data source output                               : Ok
    6: Parse event definition strings                        : Ok
    7: Simple expression parser                              : FAILED!
    8: PERF_RECORD_* events & perf_sample fields             : Ok
    9: Parse perf pmu format                                 : Ok
   10: PMU events                                            :
   10.1: PMU event table sanity                              : Ok
   10.2: PMU event map aliases                               : Ok
   10.3: Parsing of PMU event table metrics                  : Ok
   11: DSO data read                                         : Ok
   12: DSO data cache                                        : Ok
   13: DSO data reopen                                       : Ok
   14: Roundtrip evsel->name                                 : Ok
   15: Parse sched tracepoints fields                        : Ok
   16: syscalls:sys_enter_openat event fields                : Ok
   17: Setup struct perf_event_attr                          : Ok
   18: Match and link multiple hists                         : Ok
   19: 'import perf' in python                               : Ok
   20: Breakpoint overflow signal handler                    : Ok
   21: Breakpoint overflow sampling                          : Ok
   22: Breakpoint accounting                                 : Ok
   23: Watchpoint                                            :
   23.1: Read Only Watchpoint                                : Skip
   23.2: Write Only Watchpoint                               : Ok
   23.3: Read / Write Watchpoint                             : Ok
   23.4: Modify Watchpoint                                   : Ok
   24: Number of exit events of a simple workload            : Ok
   25: Software clock events period values                   : Ok
   26: Object code reading                                   : Ok
   27: Sample parsing                                        : Ok
   28: Use a dummy software event to keep tracking           : Ok
   29: Parse with no sample_id_all bit set                   : Ok
   30: Filter hist entries                                   : Ok
   31: Lookup mmap thread                                    : Ok
   32: Share thread maps                                     : Ok
   33: Sort output of hist entries                           : Ok
   34: Cumulate child hist entries                           : Ok
   35: Track with sched_switch                               : Ok
   36: Filter fds with revents mask in a fdarray             : Ok
   37: Add fd to a fdarray, making it autogrow               : Ok
   38: kmod_path__parse                                      : Ok
   39: Thread map                                            : Ok
   40: LLVM search and compile                               :
   40.1: Basic BPF llvm compile                              : Ok
   40.2: kbuild searching                                    : Ok
   40.3: Compile source for BPF prologue generation          : Ok
   40.4: Compile source for BPF relocation                   : Ok
   41: Session topology                                      : Ok
   42: BPF filter                                            :
   42.1: Basic BPF filtering                                 : Ok
   42.2: BPF pinning                                         : Ok
   42.3: BPF prologue generation                             : Ok
   42.4: BPF relocation checker                              : Ok
   43: Synthesize thread map                                 : Ok
   44: Remove thread map                                     : Ok
   45: Synthesize cpu map                                    : Ok
   46: Synthesize stat config                                : Ok
   47: Synthesize stat                                       : Ok
   48: Synthesize stat round                                 : Ok
   49: Synthesize attr update                                : Ok
   50: Event times                                           : Ok
   51: Read backward ring buffer                             : Ok
   52: Print cpu map                                         : Ok
   53: Merge cpu map                                         : Ok
   54: Probe SDT events                                      : Ok
   55: is_printable_array                                    : Ok
   56: Print bitmap                                          : Ok
   57: perf hooks                                            : Ok
   58: builtin clang support                                 : Skip (not compiled in)
   59: unit_number__scnprintf                                : Ok
   60: mem2node                                              : Ok
   61: time utils                                            : Ok
   62: Test jit_write_elf                                    : Ok
   63: Test libpfm4 support                                  : Skip (not compiled in)
   64: Test api io                                           : Ok
   65: maps__merge_in                                        : Ok
   66: Demangle Java                                         : Ok
   67: x86 rdpmc                                             : Ok
   68: Convert perf time to TSC                              : Ok
   69: DWARF unwind                                          : Ok
   70: x86 instruction decoder - new instructions            : Ok
   71: Intel PT packet decoder                               : Ok
   72: x86 bp modify                                         : Ok
   73: probe libc's inet_pton & backtrace it with ping       : Ok
   74: Use vfs_getname probe to get syscall args filenames   : Ok
   75: Check open filename arg using perf trace + vfs_getname: Ok
   76: Zstd perf.data compression/decompression              : Ok
   77: Add vfs_getname probe to get syscall args filenames   : Ok
   #
 
   [acme@five perf]$ git log --oneline -1 ; time make -C tools/perf build-test
   3e9b26dc22 (HEAD -> perf/core, seventh/perf/core, quaco/perf/core) perf tools: Remove some duplicated includes
   make: Entering directory '/home/acme/git/perf/tools/perf'
   - tarpkg: ./tests/perf-targz-src-pkg .
         make_no_libbpf_DEBUG_O: make NO_LIBBPF=1 DEBUG=1
          make_with_clangllvm_O: make LIBCLANGLLVM=1
             make_no_auxtrace_O: make NO_AUXTRACE=1
             make_no_demangle_O: make NO_DEMANGLE=1
               make_clean_all_O: make clean all
        make_util_pmu_bison_o_O: make util/pmu-bison.o
                 make_no_newt_O: make NO_NEWT=1
                 make_no_gtk2_O: make NO_GTK2=1
               make_no_libbpf_O: make NO_LIBBPF=1
             make_no_libaudit_O: make NO_LIBAUDIT=1
                  make_perf_o_O: make perf.o
               make_no_libelf_O: make NO_LIBELF=1
                  make_static_O: make LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 NO_JVMTI=1
                 make_install_O: make install
            make_no_libpython_O: make NO_LIBPYTHON=1
            make_no_libunwind_O: make NO_LIBUNWIND=1
   make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
              make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
            make_with_libpfm4_O: make LIBPFM4=1
                    make_pure_O: make
                     make_doc_O: make doc
                  make_no_sdt_O: make NO_SDT=1
                make_no_slang_O: make NO_SLANG=1
          make_no_syscall_tbl_O: make NO_SYSCALL_TABLE=1
             make_install_bin_O: make install-bin
              make_no_libperl_O: make NO_LIBPERL=1
    make_install_prefix_slash_O: make install prefix=/tmp/krava/
          make_install_prefix_O: make install prefix=/tmp/krava
                   make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
              make_no_libnuma_O: make NO_LIBNUMA=1
                 make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 NO_LIBCAP=1 NO_SYSCALL_TABLE=1
         make_with_babeltrace_O: make LIBBABELTRACE=1
                    make_help_O: make help
            make_no_libcrypto_O: make NO_LIBCRYPTO=1
                   make_debug_O: make DEBUG=1
            make_no_libbionic_O: make NO_LIBBIONIC=1
            make_no_backtrace_O: make NO_BACKTRACE=1
                    make_tags_O: make tags
              make_util_map_o_O: make util/map.o
   OK
   make: Leaving directory '/home/acme/git/perf/tools/perf'
   [acme@five perf]$
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Merge tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tooling updates from Arnaldo Carvalho de Melo:
 "These are additional changes to the perf tools, on top of what Ingo
  already submitted.

   - Further Intel PT call-trace fixes

   - Improve SELinux docs and tool warnings

   - Fix race at exit in 'perf record' using eventfd.

   - Add missing build tests to the default set of 'make -C tools/perf
     build-test'

   - Sync msr-index.h getting new AMD MSRs to decode and filter in 'perf
     trace'.

   - Fix fallback to libaudit in 'perf trace' for arches not using
     per-arch *.tbl files.

   - Fixes for 'perf ftrace'.

   - Fixes and improvements for the 'perf stat' metrics.

   - Use dummy event to get PERF_RECORD_{FORK,MMAP,etc} while
     synthesizing those metadata events for pre-existing threads.

   - Fix leaks detected using clang tooling.

   - Improvements to PMU event metric testing.

   - Report summary for 'perf stat' interval mode at the end, summing up
     all the intervals.

   - Improve pipe mode, i.e. this now works as expected, continuously
     dumping samples:

        # perf record -g -e raw_syscalls:sys_enter | perf --no-pager script

   - Fixes for event grouping, detecting incompatible groups such as:

        # perf stat -e '{cycles,power/energy-cores/}' -v
        WARNING: group events cpu maps do not match, disabling group:
          anon group { power/energy-cores/, cycles }
            power/energy-cores/: 0
            cycles: 0-7

   - Fixes for 'perf probe': blacklist address checking, number of
     kretprobe instances, etc.

   - JIT processing improvements and fixes plus the addition of a 'perf
     test' entry for the java demangler.

   - Add support for synthesizing first/last level cache, TLB and remove
     access events from HW tracing in the auxtrace code, first to use is
     ARM SPE.

   - Vendor events updates and fixes, including for POWER9 and Intel.

   - Allow using ~/.perfconfig for removing the ',' separators in 'perf
     stat' output.

   - Opt-in support for libpfm4"

* tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (120 commits)
  perf tools: Remove some duplicated includes
  perf symbols: Fix kernel maps for kcore and eBPF
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf stat: Ensure group is defined on top of the same cpu mask
  perf libdw: Fix off-by 1 relative directory includes
  perf arm-spe: Support synthetic events
  perf auxtrace: Add four itrace options
  perf tools: Move arm-spe-pkt-decoder.h/c to the new dir
  perf test: Initialize memory in dwarf-unwind
  perf tests: Don't tail call optimize in unwind test
  tools compiler.h: Add attribute to disable tail calls
  perf build: Add a LIBPFM4=1 build test entry
  perf tools: Add optional support for libpfm4
  perf tools: Correct license on jsmn JSON parser
  perf jit: Fix inaccurate DWARF line table
  perf jvmti: Remove redundant jitdump line table entries
  perf build: Add NO_SDT=1 to the default set of build tests
  perf build: Add NO_LIBCRYPTO=1 to the default set of build tests
  perf build: Add NO_SYSCALL_TABLE=1 to the build tests
  perf build: Remove libaudit from the default feature checks
  ...
2020-06-04 10:17:59 -07:00
Linus Torvalds 039aeb9deb ARM:
- Move the arch-specific code into arch/arm64/kvm
 - Start the post-32bit cleanup
 - Cherry-pick a few non-invasive pre-NV patches
 
 x86:
 - Rework of TLB flushing
 - Rework of event injection, especially with respect to nested virtualization
 - Nested AMD event injection facelift, building on the rework of generic code
 and fixing a lot of corner cases
 - Nested AMD live migration support
 - Optimization for TSC deadline MSR writes and IPIs
 - Various cleanups
 - Asynchronous page fault cleanups (from tglx, common topic branch with tip tree)
 - Interrupt-based delivery of asynchronous "page ready" events (host side)
 - Hyper-V MSRs and hypercalls for guest debugging
 - VMX preemption timer fixes
 
 s390:
 - Cleanups
 
 Generic:
 - switch vCPU thread wakeup from swait to rcuwait
 
 The other architectures, and the guest side of the asynchronous page fault
 work, will come next week.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM:
   - Move the arch-specific code into arch/arm64/kvm

   - Start the post-32bit cleanup

   - Cherry-pick a few non-invasive pre-NV patches

  x86:
   - Rework of TLB flushing

   - Rework of event injection, especially with respect to nested
     virtualization

   - Nested AMD event injection facelift, building on the rework of
     generic code and fixing a lot of corner cases

   - Nested AMD live migration support

   - Optimization for TSC deadline MSR writes and IPIs

   - Various cleanups

   - Asynchronous page fault cleanups (from tglx, common topic branch
     with tip tree)

   - Interrupt-based delivery of asynchronous "page ready" events (host
     side)

   - Hyper-V MSRs and hypercalls for guest debugging

   - VMX preemption timer fixes

  s390:
   - Cleanups

  Generic:
   - switch vCPU thread wakeup from swait to rcuwait

  The other architectures, and the guest side of the asynchronous page
  fault work, will come next week"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (256 commits)
  KVM: selftests: fix rdtsc() for vmx_tsc_adjust_test
  KVM: check userspace_addr for all memslots
  KVM: selftests: update hyperv_cpuid with SynDBG tests
  x86/kvm/hyper-v: Add support for synthetic debugger via hypercalls
  x86/kvm/hyper-v: enable hypercalls regardless of hypercall page
  x86/kvm/hyper-v: Add support for synthetic debugger interface
  x86/hyper-v: Add synthetic debugger definitions
  KVM: selftests: VMX preemption timer migration test
  KVM: nVMX: Fix VMX preemption timer migration
  x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit
  KVM: x86/pmu: Support full width counting
  KVM: x86/pmu: Tweak kvm_pmu_get_msr to pass 'struct msr_data' in
  KVM: x86: announce KVM_FEATURE_ASYNC_PF_INT
  KVM: x86: acknowledgment mechanism for async pf page ready notifications
  KVM: x86: interrupt based APF 'page ready' event delivery
  KVM: introduce kvm_read_guest_offset_cached()
  KVM: rename kvm_arch_can_inject_async_page_present() to kvm_arch_can_dequeue_async_page_present()
  KVM: x86: extend struct kvm_vcpu_pv_apf_data with token info
  Revert "KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously"
  KVM: VMX: Replace zero-length array with flexible-array
  ...
2020-06-03 15:13:47 -07:00
Arnaldo Carvalho de Melo 3b1f47d6e7 tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  5cde265384 ("perf/x86/rapl: Add AMD Fam17h RAPL support")

Addressing this tools/perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h

With this one will be able to use these new AMD MSRs in filters, by
name, e.g.:

   # perf trace -e msr:* --filter="msr==AMD_PKG_ENERGY_STATUS || msr==AMD_RAPL_POWER_UNIT"

Just like it is now possible with other MSRs:

  [root@five ~]# uname -a
  Linux five 5.5.17-200.fc31.x86_64 #1 SMP Mon Apr 13 15:29:42 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
  [root@five ~]# grep 'model name' -m1 /proc/cpuinfo
  model name	: AMD Ryzen 5 3600X 6-Core Processor
  [root@five ~]#
  [root@five ~]# perf trace -e msr:*/max-stack=16/ --filter="msr==AMD_PERF_CTL" --max-events=2
       0.000 kworker/1:1-ev/2327824 msr:write_msr(msr: AMD_PERF_CTL, val: 2)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         [0xffffffffc01d71c3] ([acpi_cpufreq])
                                         [0] ([unknown])
                                         __cpufreq_driver_target ([kernel.kallsyms])
                                         od_dbs_update ([kernel.kallsyms])
                                         dbs_work_handler ([kernel.kallsyms])
                                         process_one_work ([kernel.kallsyms])
                                         worker_thread ([kernel.kallsyms])
                                         kthread ([kernel.kallsyms])
                                         ret_from_fork ([kernel.kallsyms])
       8.597 kworker/2:2-ev/2338099 msr:write_msr(msr: AMD_PERF_CTL, val: 2)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         [0] ([unknown])
                                         [0] ([unknown])
                                         __cpufreq_driver_target ([kernel.kallsyms])
                                         od_dbs_update ([kernel.kallsyms])
                                         dbs_work_handler ([kernel.kallsyms])
                                         process_one_work ([kernel.kallsyms])
                                         worker_thread ([kernel.kallsyms])
                                         kthread ([kernel.kallsyms])
                                         ret_from_fork ([kernel.kallsyms])
  [root@five ~]#

Longer explanation with what happens in the perf build process,
automatically after this is made in synch with the kernel sources:

  $ make -C tools/perf O=/tmp/build/perf install-bin
  <SNIP>
  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
  <SNIP>
  make: Leaving directory '/home/acme/git/perf/tools/perf'
  $
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $
  $ diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
  --- tools/arch/x86/include/asm/msr-index.h	2020-06-02 10:46:36.217782288 -0300
  +++ arch/x86/include/asm/msr-index.h	2020-05-28 10:41:23.313794627 -0300
  @@ -301,6 +301,9 @@
   #define MSR_PP1_ENERGY_STATUS		0x00000641
   #define MSR_PP1_POLICY			0x00000642

  +#define MSR_AMD_PKG_ENERGY_STATUS	0xc001029b
  +#define MSR_AMD_RAPL_POWER_UNIT		0xc0010299
  +
   /* Config TDP MSRs */
   #define MSR_CONFIG_TDP_NOMINAL		0x00000648
   #define MSR_CONFIG_TDP_LEVEL_1		0x00000649
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $
  $ make -C tools/perf O=/tmp/build/perf install-bin
  <SNIP>
    CC       /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
    LD       /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
    LD       /tmp/build/perf/trace/beauty/perf-in.o
    LD       /tmp/build/perf/perf-in.o
    LINK     /tmp/build/perf/perf
  <SNIP>
  make: Leaving directory '/home/acme/git/perf/tools/perf'
  $
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2020-06-02 10:47:08.486334348 -0300
  +++ after	2020-06-02 10:47:33.075008948 -0300
  @@ -286,6 +286,8 @@
   	[0xc0010240 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTL",
   	[0xc0010241 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTR",
   	[0xc0010280 - x86_AMD_V_KVM_MSRs_offset] = "F15H_PTSC",
  +	[0xc0010299 - x86_AMD_V_KVM_MSRs_offset] = "AMD_RAPL_POWER_UNIT",
  +	[0xc001029b - x86_AMD_V_KVM_MSRs_offset] = "AMD_PKG_ENERGY_STATUS",
   	[0xc00102f0 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN_CTL",
   	[0xc00102f1 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN",
   };
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-02 10:57:59 -03:00
Linus Torvalds 69fc06f70f There are a lot of objtool changes in this cycle, all across the map:
- Speed up objtool significantly, especially when there are large number of sections
  - Improve objtool's understanding of special instructions such as IRET,
    to reduce the number of annotations required
  - Implement 'noinstr' validation
  - Do baby steps for non-x86 objtool use
  - Simplify/fix retpoline decoding
  - Add vmlinux validation
  - Improve documentation
  - Fix various bugs and apply smaller cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:
 "There are a lot of objtool changes in this cycle, all across the map:

   - Speed up objtool significantly, especially when there are large
     number of sections

   - Improve objtool's understanding of special instructions such as
     IRET, to reduce the number of annotations required

   - Implement 'noinstr' validation

   - Do baby steps for non-x86 objtool use

   - Simplify/fix retpoline decoding

   - Add vmlinux validation

   - Improve documentation

   - Fix various bugs and apply smaller cleanups"

* tag 'objtool-core-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  objtool: Enable compilation of objtool for all architectures
  objtool: Move struct objtool_file into arch-independent header
  objtool: Exit successfully when requesting help
  objtool: Add check_kcov_mode() to the uaccess safelist
  samples/ftrace: Fix asm function ELF annotations
  objtool: optimize add_dead_ends for split sections
  objtool: use gelf_getsymshndx to handle >64k sections
  objtool: Allow no-op CFI ops in alternatives
  x86/retpoline: Fix retpoline unwind
  x86: Change {JMP,CALL}_NOSPEC argument
  x86: Simplify retpoline declaration
  x86/speculation: Change FILL_RETURN_BUFFER to work with objtool
  objtool: Add support for intra-function calls
  objtool: Move the IRET hack into the arch decoder
  objtool: Remove INSN_STACK
  objtool: Make handle_insn_ops() unconditional
  objtool: Rework allocating stack_ops on decode
  objtool: UNWIND_HINT_RET_OFFSET should not check registers
  objtool: is_fentry_call() crashes if call has no destination
  x86,smap: Fix smap_{save,restore}() alternatives
  ...
2020-06-01 13:13:00 -07:00
Arnd Bergmann 37744feebc sh: remove sh5 support
sh5 never became a product and has probably never really worked.

Remove it by recursively deleting all associated Kconfig options
and all corresponding files.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rich Felker <dalias@libc.org>
2020-06-01 14:48:52 -04:00
Makarand Sonare 8d7fbf01f9 KVM: selftests: VMX preemption timer migration test
When a nested VM with a VMX-preemption timer is migrated, verify that the
nested VM and its parent VM observe the VMX-preemption timer exit close to
the original expiration deadline.

Signed-off-by: Makarand Sonare <makarandsonare@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20200526215107.205814-3-makarandsonare@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01 04:26:10 -04:00
Andy Lutomirski 700d3a5a66 x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long"
Revert

  45e29d119e ("x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long")

and add a comment to discourage someone else from making the same
mistake again.

It turns out that some user code fails to compile if __X32_SYSCALL_BIT
is unsigned long. See, for example [1] below.

 [ bp: Massage and do the same thing in the respective tools/ header. ]

Fixes: 45e29d119e ("x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long")
Reported-by: Thorsten Glaser <t.glaser@tarent.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@kernel.org
Link: [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954294
Link: https://lkml.kernel.org/r/92e55442b744a5951fdc9cfee10badd0a5f7f828.1588983892.git.luto@kernel.org
2020-05-26 16:42:43 +02:00
Peter Zijlstra c536ed2fff objtool: Remove SAVE/RESTORE hints
The SAVE/RESTORE hints are now unused; remove them.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200416115118.926738768@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-04-22 10:53:50 +02:00
Peter Zijlstra e25eea89bb objtool: Introduce HINT_RET_OFFSET
Normally objtool ensures a function keeps the stack layout invariant.
But there is a useful exception, it is possible to stuff the return
stack in order to 'inject' a 'call':

	push $fun
	ret

In this case the invariant mentioned above is violated.

Add an objtool HINT to annotate this and allow a function exit with a
modified stack frame.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200416115118.690601403@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-04-22 10:53:50 +02:00
Arnaldo Carvalho de Melo e00a2d907e tools arch x86: Sync asm/cpufeatures.h with the kernel sources
To pick up the changes from:

  077168e241 ("x86/mce/amd: Add PPIN support for AMD MCE")
  753039ef8b ("x86/cpu/amd: Call init_amd_zn() om Family 19h processors too")
  6650cdd9a8 ("x86/split_lock: Enable split lock detection by kernel")

These don't cause any changes in tooling, just silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-14 09:08:23 -03:00
Arnaldo Carvalho de Melo bab1a501e6 tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes in:

  6650cdd9a8 ("x86/split_lock: Enable split lock detection by kernel")

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h

Which causes these changes in tooling:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  --- before	2020-04-01 12:11:14.789344795 -0300
  +++ after	2020-04-01 12:11:56.907798879 -0300
  @@ -10,6 +10,7 @@
   	[0x00000029] = "KNC_EVNTSEL1",
   	[0x0000002a] = "IA32_EBL_CR_POWERON",
   	[0x0000002c] = "EBC_FREQUENCY_ID",
  +	[0x00000033] = "TEST_CTRL",
   	[0x00000034] = "SMI_COUNT",
   	[0x0000003a] = "IA32_FEAT_CTL",
   	[0x0000003b] = "IA32_TSC_ADJUST",
  @@ -27,6 +28,7 @@
   	[0x000000c2] = "IA32_PERFCTR1",
   	[0x000000cd] = "FSB_FREQ",
   	[0x000000ce] = "PLATFORM_INFO",
  +	[0x000000cf] = "IA32_CORE_CAPS",
   	[0x000000e2] = "PKG_CST_CONFIG_CONTROL",
   	[0x000000e7] = "IA32_MPERF",
   	[0x000000e8] = "IA32_APERF",
  $

  $ make -C tools/perf O=/tmp/build/perf install-bin
  <SNIP>
    CC       /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
    LD       /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
    LD       /tmp/build/perf/trace/beauty/perf-in.o
    LD       /tmp/build/perf/perf-in.o
    LINK     /tmp/build/perf/perf
  <SNIP>

Now one can do:

	perf trace -e msr:* --filter=msr==IA32_CORE_CAPS

or:

	perf trace -e msr:* --filter='msr==IA32_CORE_CAPS || msr==TEST_CTRL'

And see only those MSRs being accessed via:

  # perf trace -v -e msr:* --filter='msr==IA32_CORE_CAPS || msr==TEST_CTRL'
  New filter for msr:read_msr: (msr==0xcf || msr==0x33) && (common_pid != 8263 && common_pid != 23250)
  New filter for msr:write_msr: (msr==0xcf || msr==0x33) && (common_pid != 8263 && common_pid != 23250)
  New filter for msr:rdpmc: (msr==0xcf || msr==0x33) && (common_pid != 8263 && common_pid != 23250)

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/20200401153325.GC12534@kernel.org/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-14 08:42:56 -03:00
Linus Torvalds 8c1b724ddb ARM:
* GICv4.1 support
 * 32bit host removal
 
 PPC:
 * secure (encrypted) using under the Protected Execution Framework
 ultravisor
 
 s390:
 * allow disabling GISA (hardware interrupt injection) and protected
 VMs/ultravisor support.
 
 x86:
 * New dirty bitmap flag that sets all bits in the bitmap when dirty
 page logging is enabled; this is faster because it doesn't require bulk
 modification of the page tables.
 * Initial work on making nested SVM event injection more similar to VMX,
 and less buggy.
 * Various cleanups to MMU code (though the big ones and related
 optimizations were delayed to 5.8).  Instead of using cr3 in function
 names which occasionally means eptp, KVM too has standardized on "pgd".
 * A large refactoring of CPUID features, which now use an array that
 parallels the core x86_features.
 * Some removal of pointer chasing from kvm_x86_ops, which will also be
 switched to static calls as soon as they are available.
 * New Tigerlake CPUID features.
 * More bugfixes, optimizations and cleanups.
 
 Generic:
 * selftests: cleanups, new MMU notifier stress test, steal-time test
 * CSV output for kvm_stat.
 
 KVM/MIPS has been broken since 5.5, it does not compile due to a patch committed
 by MIPS maintainers.  I had already prepared a fix, but the MIPS maintainers
 prefer to fix it in generic code rather than KVM so they are taking care of it.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM:
   - GICv4.1 support

   - 32bit host removal

  PPC:
   - secure (encrypted) using under the Protected Execution Framework
     ultravisor

  s390:
   - allow disabling GISA (hardware interrupt injection) and protected
     VMs/ultravisor support.

  x86:
   - New dirty bitmap flag that sets all bits in the bitmap when dirty
     page logging is enabled; this is faster because it doesn't require
     bulk modification of the page tables.

   - Initial work on making nested SVM event injection more similar to
     VMX, and less buggy.

   - Various cleanups to MMU code (though the big ones and related
     optimizations were delayed to 5.8). Instead of using cr3 in
     function names which occasionally means eptp, KVM too has
     standardized on "pgd".

   - A large refactoring of CPUID features, which now use an array that
     parallels the core x86_features.

   - Some removal of pointer chasing from kvm_x86_ops, which will also
     be switched to static calls as soon as they are available.

   - New Tigerlake CPUID features.

   - More bugfixes, optimizations and cleanups.

  Generic:
   - selftests: cleanups, new MMU notifier stress test, steal-time test

   - CSV output for kvm_stat"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (277 commits)
  x86/kvm: fix a missing-prototypes "vmread_error"
  KVM: x86: Fix BUILD_BUG() in __cpuid_entry_get_reg() w/ CONFIG_UBSAN=y
  KVM: VMX: Add a trampoline to fix VMREAD error handling
  KVM: SVM: Annotate svm_x86_ops as __initdata
  KVM: VMX: Annotate vmx_x86_ops as __initdata
  KVM: x86: Drop __exit from kvm_x86_ops' hardware_unsetup()
  KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection
  KVM: x86: Set kvm_x86_ops only after ->hardware_setup() completes
  KVM: VMX: Configure runtime hooks using vmx_x86_ops
  KVM: VMX: Move hardware_setup() definition below vmx_x86_ops
  KVM: x86: Move init-only kvm_x86_ops to separate struct
  KVM: Pass kvm_init()'s opaque param to additional arch funcs
  s390/gmap: return proper error code on ksm unsharing
  KVM: selftests: Fix cosmetic copy-paste error in vm_mem_region_move()
  KVM: Fix out of range accesses to memslots
  KVM: X86: Micro-optimize IPI fastpath delay
  KVM: X86: Delay read msr data iff writes ICR MSR
  KVM: PPC: Book3S HV: Add a capability for enabling secure guests
  KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs
  KVM: arm64: GICv4.1: Allow non-trapping WFI when using HW SGIs
  ...
2020-04-02 15:13:15 -07:00
Yu-cheng Yu 5790921bc1 x86/insn: Add Control-flow Enforcement (CET) instructions to the opcode map
Add the following CET instructions to the opcode map:

INCSSP:
    Increment Shadow Stack pointer (SSP).

RDSSP:
    Read SSP into a GPR.

SAVEPREVSSP:
    Use "previous ssp" token at top of current Shadow Stack (SHSTK) to
    create a "restore token" on the previous (outgoing) SHSTK.

RSTORSSP:
    Restore from a "restore token" to SSP.

WRSS:
    Write to kernel-mode SHSTK (kernel-mode instruction).

WRUSS:
    Write to user-mode SHSTK (kernel-mode instruction).

SETSSBSY:
    Verify the "supervisor token" pointed by MSR_IA32_PL0_SSP, set the
    token busy, and set then Shadow Stack pointer(SSP) to the value of
    MSR_IA32_PL0_SSP.

CLRSSBSY:
    Verify the "supervisor token" and clear its busy bit.

ENDBR64/ENDBR32:
    Mark a valid 64/32 bit control transfer endpoint.

Detailed information of CET instructions can be found in Intel Software
Developer's Manual.

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20200204171425.28073-2-yu-cheng.yu@intel.com
2020-03-26 12:21:40 +01:00
Paolo Bonzini 1c482452d5 KVM: s390: Features and Enhancements for 5.7 part1
1. Allow to disable gisa
 2. protected virtual machines
   Protected VMs (PVM) are KVM VMs, where KVM can't access the VM's
   state like guest memory and guest registers anymore. Instead the
   PVMs are mostly managed by a new entity called Ultravisor (UV),
   which provides an API, so KVM and the PV can request management
   actions.
 
   PVMs are encrypted at rest and protected from hypervisor access
   while running.  They switch from a normal operation into protected
   mode, so we can still use the standard boot process to load a
   encrypted blob and then move it into protected mode.
 
   Rebooting is only possible by passing through the unprotected/normal
   mode and switching to protected again.
 
   One mm related patch will go via Andrews mm tree ( mm/gup/writeback:
   add callbacks for inaccessible pages)
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Merge tag 'kvm-s390-next-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390: Features and Enhancements for 5.7 part1

1. Allow to disable gisa
2. protected virtual machines
  Protected VMs (PVM) are KVM VMs, where KVM can't access the VM's
  state like guest memory and guest registers anymore. Instead the
  PVMs are mostly managed by a new entity called Ultravisor (UV),
  which provides an API, so KVM and the PV can request management
  actions.

  PVMs are encrypted at rest and protected from hypervisor access
  while running.  They switch from a normal operation into protected
  mode, so we can still use the standard boot process to load a
  encrypted blob and then move it into protected mode.

  Rebooting is only possible by passing through the unprotected/normal
  mode and switching to protected again.

  One mm related patch will go via Andrews mm tree ( mm/gup/writeback:
  add callbacks for inaccessible pages)
2020-03-16 18:19:34 +01:00
Ben Gardon 4f72180eb4 KVM: selftests: Add demand paging content to the demand paging test
The demand paging test is currently a simple page access test which, while
potentially useful, doesn't add much versus the existing dirty logging
test. To improve the demand paging test, add a basic userfaultfd demand
paging implementation.

Signed-off-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16 17:56:48 +01:00
Arnaldo Carvalho de Melo 0d6f94fd49 tools headers UAPI: Update tools's copy of kvm.h headers
Picking the changes from:

  5ef8acbdd6 ("KVM: nVMX: Emulate MTF when performing instruction emulation")

Silencing this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h'
  diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h

No change in tooling ensues, just the x86 kvm tooling gets rebuilt as
those headers are included in its build:

  $ cp arch/x86/include/uapi/asm/kvm.h tools/arch/x86/include/uapi/asm/kvm.h
  $ make -C tools/perf
  make: Entering directory '/home/acme/git/perf/tools/perf'
    BUILD:   Doing 'make -j12' parallel build

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  <SNIP>
  ...        disassembler-four-args: [ on  ]

    DESCEND  plugins
    CC       /tmp/build/perf/arch/x86/util/kvm-stat.o
  <SNIP>
    LD       /tmp/build/perf/arch/x86/util/perf-in.o
    LD       /tmp/build/perf/arch/x86/perf-in.o
    LD       /tmp/build/perf/arch/perf-in.o
    LD       /tmp/build/perf/perf-in.o
    LINK     /tmp/build/perf/perf
  <SNIP>
  $

As it doesn't seem to be used there:

  $ grep STATE tools/perf/arch/x86/util/kvm-stat.c
  $

And the 'perf trace' beautifier table generator isn't interested in
these things:

  $ grep regex= tools/perf/trace/beauty/kvm_ioctl.sh
  regex='^#[[:space:]]*define[[:space:]]+KVM_(\w+)[[:space:]]+_IO[RW]*\([[:space:]]*KVMIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oliver Upton <oupton@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27 09:51:30 -03:00
Arnaldo Carvalho de Melo d8e3ee2e2b tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes from these csets:

  21b5ee59ef ("x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF")

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $ git diff
  diff --git a/tools/arch/x86/include/asm/msr-index.h b/tools/arch/x86/include/asm/msr-index.h
  index ebe1685e92dd..d5e517d1c3dd 100644
  --- a/tools/arch/x86/include/asm/msr-index.h
  +++ b/tools/arch/x86/include/asm/msr-index.h
  @@ -512,6 +512,8 @@
   #define MSR_K7_HWCR                    0xc0010015
   #define MSR_K7_HWCR_SMMLOCK_BIT                0
   #define MSR_K7_HWCR_SMMLOCK            BIT_ULL(MSR_K7_HWCR_SMMLOCK_BIT)
  +#define MSR_K7_HWCR_IRPERF_EN_BIT      30
  +#define MSR_K7_HWCR_IRPERF_EN          BIT_ULL(MSR_K7_HWCR_IRPERF_EN_BIT)
   #define MSR_K7_FID_VID_CTL             0xc0010041
   #define MSR_K7_FID_VID_STATUS          0xc0010042
  $

That don't result in any change in tooling:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
  $ diff -u before after
  $

To silence this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-27 09:49:56 -03:00
Arnaldo Carvalho de Melo 391df72fbd tools headers kvm: Sync kvm headers with the kernel sources
To pick up the changes from:

  290a6bb06d ("arm64: KVM: Add UAPI notes for swapped registers")

No tools changes are caused by this.

This addresses these tools/perf build warnings:

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrew Jones <drjones@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:41:20 -03:00
Arnaldo Carvalho de Melo 71dd652897 tools arch x86: Sync asm/cpufeatures.h with the kernel sources
To pick up the changes from:

  85c17291e2 ("x86/cpufeatures: Add flag to track whether MSR IA32_FEAT_CTL is configured")
  f444a5ff95 ("x86/cpufeatures: Add support for fast short REP; MOVSB")

These don't cause any changes in tooling, just silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:33:34 -03:00
Arnaldo Carvalho de Melo 7636b58639 tools headers x86: Sync disabled-features.h
To silence the following tools/perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
  diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h

Picking up the changes in:

  45fc24e89b ("x86/mpx: remove MPX from arch/x86")

that didn't entail any functionality change in the tooling side.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:29:41 -03:00
Arnaldo Carvalho de Melo c75bec79fc tools headers UAPI: Sync copy of arm64's asm/unistd.h with the kernel sources
To get the changes in:

  3e3c8ca5a3 ("arm64: Move __ARCH_WANT_SYS_CLONE3 definition to uapi headers")

Silencing this tools/perf/ build warning:

  Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/unistd.h' differs from latest version at 'arch/arm64/include/uapi/asm/unistd.h'
  diff -u tools/arch/arm64/include/uapi/asm/unistd.h arch/arm64/include/uapi/asm/unistd.h

Which will probably end up enabling the use of "clone3" in 'perf trace -e',
haven't checked the build with this change on an arm64 system.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Amanieu d'Antras <amanieu@gmail.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-11 16:41:50 -03:00
Linus Torvalds b70a2d6b29 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - three fixes and a cleanup for the resctrl code

   - a HyperV fix

   - a fix to /proc/kcore contents in live debugging sessions

   - a fix for the x86 decoder opcode map"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/decoder: Add TEST opcode to Group3-2
  x86/resctrl: Clean up unused function parameter in mkdir path
  x86/resctrl: Fix a deadlock due to inaccurate reference
  x86/resctrl: Fix use-after-free due to inaccurate refcount of rdtgroup
  x86/resctrl: Fix use-after-free when deleting resource groups
  x86/hyper-v: Add "polling" bit to hv_synic_sint
  x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
2020-01-31 11:05:33 -08:00
Linus Torvalds e813e65038 ARM: Cleanups and corner case fixes
PPC: Bugfixes
 
 x86:
 * Support for mapping DAX areas with large nested page table entries.
 * Cleanups and bugfixes here too.  A particularly important one is
 a fix for FPU load when the thread has TIF_NEED_FPU_LOAD.  There is
 also a race condition which could be used in guest userspace to exploit
 the guest kernel, for which the embargo expired today.
 * Fast path for IPI delivery vmexits, shaving about 200 clock cycles
 from IPI latency.
 * Protect against "Spectre-v1/L1TF" (bring data in the cache via
 speculative out of bound accesses, use L1TF on the sibling hyperthread
 to read it), which unfortunately is an even bigger whack-a-mole game
 than SpectreV1.
 
 Sean continues his mission to rewrite KVM.  In addition to a sizable
 number of x86 patches, this time he contributed a pretty large refactoring
 of vCPU creation that affects all architectures but should not have any
 visible effect.
 
 s390 will come next week together with some more x86 patches.
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Merge tag 'kvm-5.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "This is the first batch of KVM changes.

  ARM:
   - cleanups and corner case fixes.

  PPC:
   - Bugfixes

  x86:
   - Support for mapping DAX areas with large nested page table entries.

   - Cleanups and bugfixes here too. A particularly important one is a
     fix for FPU load when the thread has TIF_NEED_FPU_LOAD. There is
     also a race condition which could be used in guest userspace to
     exploit the guest kernel, for which the embargo expired today.

   - Fast path for IPI delivery vmexits, shaving about 200 clock cycles
     from IPI latency.

   - Protect against "Spectre-v1/L1TF" (bring data in the cache via
     speculative out of bound accesses, use L1TF on the sibling
     hyperthread to read it), which unfortunately is an even bigger
     whack-a-mole game than SpectreV1.

  Sean continues his mission to rewrite KVM. In addition to a sizable
  number of x86 patches, this time he contributed a pretty large
  refactoring of vCPU creation that affects all architectures but should
  not have any visible effect.

  s390 will come next week together with some more x86 patches"

* tag 'kvm-5.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
  x86/KVM: Clean up host's steal time structure
  x86/KVM: Make sure KVM_VCPU_FLUSH_TLB flag is not missed
  x86/kvm: Cache gfn to pfn translation
  x86/kvm: Introduce kvm_(un)map_gfn()
  x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit
  KVM: PPC: Book3S PR: Fix -Werror=return-type build failure
  KVM: PPC: Book3S HV: Release lock on page-out failure path
  KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer
  KVM: arm64: pmu: Only handle supported event counters
  KVM: arm64: pmu: Fix chained SW_INCR counters
  KVM: arm64: pmu: Don't mark a counter as chained if the odd one is disabled
  KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset
  KVM: x86: Use a typedef for fastop functions
  KVM: X86: Add 'else' to unify fastop and execute call path
  KVM: x86: inline memslot_valid_for_gpte
  KVM: x86/mmu: Use huge pages for DAX-backed files
  KVM: x86/mmu: Remove lpage_is_disallowed() check from set_spte()
  KVM: x86/mmu: Fold max_mapping_level() into kvm_mmu_hugepage_adjust()
  KVM: x86/mmu: Zap any compound page when collapsing sptes
  KVM: x86/mmu: Remove obsolete gfn restoration in FNAME(fetch)
  ...
2020-01-31 09:30:41 -08:00
Linus Torvalds c0275ae758 Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu-features updates from Ingo Molnar:
 "The biggest change in this cycle was a large series from Sean
  Christopherson to clean up the handling of VMX features. This both
  fixes bugs/inconsistencies and makes the code more coherent and
  future-proof.

  There are also two cleanups and a minor TSX syslog messages
  enhancement"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  x86/cpu: Remove redundant cpu_detect_cache_sizes() call
  x86/cpu: Print "VMX disabled" error message iff KVM is enabled
  KVM: VMX: Allow KVM_INTEL when building for Centaur and/or Zhaoxin CPUs
  perf/x86: Provide stubs of KVM helpers for non-Intel CPUs
  KVM: VMX: Use VMX_FEATURE_* flags to define VMCS control bits
  KVM: VMX: Check for full VMX support when verifying CPU compatibility
  KVM: VMX: Use VMX feature flag to query BIOS enabling
  KVM: VMX: Drop initialization of IA32_FEAT_CTL MSR
  x86/cpufeatures: Add flag to track whether MSR IA32_FEAT_CTL is configured
  x86/cpu: Set synthetic VMX cpufeatures during init_ia32_feat_ctl()
  x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*
  x86/cpu: Detect VMX features on Intel, Centaur and Zhaoxin CPUs
  x86/vmx: Introduce VMX_FEATURES_*
  x86/cpu: Clear VMX feature flag if VMX is not fully enabled
  x86/zhaoxin: Use common IA32_FEAT_CTL MSR initialization
  x86/centaur: Use common IA32_FEAT_CTL MSR initialization
  x86/mce: WARN once if IA32_FEAT_CTL MSR is left unlocked
  x86/intel: Initialize IA32_FEAT_CTL MSR at boot
  tools/x86: Sync msr-index.h from kernel sources
  selftests, kvm: Replace manual MSR defs with common msr-index.h
  ...
2020-01-28 12:46:42 -08:00
Masami Hiramatsu 8b7e20a7ba x86/decoder: Add TEST opcode to Group3-2
Add TEST opcode to Group3-2 reg=001b as same as Group3-1 does.

Commit

  12a78d43de ("x86/decoder: Add new TEST instruction pattern")

added a TEST opcode assignment to f6 XX/001/XXX (Group 3-1), but did
not add f7 XX/001/XXX (Group 3-2).

Actually, this TEST opcode variant (ModRM.reg /1) is not described in
the Intel SDM Vol2 but in AMD64 Architecture Programmer's Manual Vol.3,
Appendix A.2 Table A-6. ModRM.reg Extensions for the Primary Opcode Map.

Without this fix, Randy found a warning by insn_decoder_test related
to this issue as below.

    HOSTCC  arch/x86/tools/insn_decoder_test
    HOSTCC  arch/x86/tools/insn_sanity
    TEST    posttest
  arch/x86/tools/insn_decoder_test: warning: Found an x86 instruction decoder bug, please report this.
  arch/x86/tools/insn_decoder_test: warning: ffffffff81000bf1:	f7 0b 00 01 08 00    	testl  $0x80100,(%rbx)
  arch/x86/tools/insn_decoder_test: warning: objdump says 6 bytes, but insn_get_length() says 2
  arch/x86/tools/insn_decoder_test: warning: Decoded and checked 11913894 instructions with 1 failures
    TEST    posttest
  arch/x86/tools/insn_sanity: Success: decoded and checked 1000000 random instructions with 0 errors (seed:0x871ce29c)

To fix this error, add the TEST opcode according to AMD64 APM Vol.3.

 [ bp: Massage commit message. ]

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lkml.kernel.org/r/157966631413.9580.10311036595431878351.stgit@devnote2
2020-01-22 12:17:32 +01:00
Sean Christopherson f6505c88bf tools/x86: Sync msr-index.h from kernel sources
Sync msr-index.h to pull in recent renames of the IA32_FEATURE_CONTROL
MSR definitions.  Update KVM's VMX selftest and turbostat accordingly.
Keep the full name in turbostat's output to avoid breaking someone's
workflow, e.g. if a script is looking for the full name.

While using the renamed defines is by no means necessary, do the sync
now to avoid leaving a landmine that will get stepped on the next time
msr-index.h needs to be refreshed for some other reason.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-4-sean.j.christopherson@intel.com
2020-01-13 17:42:57 +01:00
Xiaoyao Li 9dadc2f918 KVM: VMX: Rename INTERRUPT_PENDING to INTERRUPT_WINDOW
Rename interrupt-windown exiting related definitions to match the
latest Intel SDM. No functional changes.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-08 18:15:59 +01:00
Arnaldo Carvalho de Melo a717ab38a5 tools arch x86: Sync asm/cpufeatures.h with the kernel sources
To pick up the changes from:

  a25bbc2644 ("Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
  db4d30fbb7 ("x86/bugs: Add ITLB_MULTIHIT bug infrastructure")
  1b42f01741 ("x86/speculation/taa: Add mitigation for TSX Async Abort")
  9d40b85bb4 ("x86/cpufeatures: Add feature bit RDPRU on AMD")

These don't cause any changes in tooling, just silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Babu Moger <babu.moger@amd.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vineela Tummalapalli <vineela.tummalapalli@intel.com>
Link: https://lkml.kernel.org/n/tip-yufg9yt2nbkh45r9xvxnnscq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-02 15:20:05 -03:00
Arnaldo Carvalho de Melo 1fc3d0ee24 tools headers kvm: Sync kvm headers with the kernel sources
To pick up the changes from:

  14edff8831 Merge tag 'kvmarm-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
  a4b28f5c67 Merge remote-tracking branch 'kvmarm/kvm-arm64/stolen-time' into kvmarm-master/next
  58772e9a3d ("KVM: arm64: Provide VCPU attributes for stolen time")
  da345174ce ("KVM: arm/arm64: Allow user injection of external data aborts")
  c726200dd1 ("KVM: arm/arm64: Allow reporting non-ISV data aborts to userspace")
  efe5ddcae4 ("KVM: PPC: Book3S HV: XIVE: Allow userspace to set the # of VPs")

No tools changes are caused by this, as the only defines so far used
from these files are for syscall arg pretty printing are:

  $ grep KVM tools/perf/trace/beauty/*.sh
  tools/perf/trace/beauty/kvm_ioctl.sh:regex='^#[[:space:]]*define[[:space:]]+KVM_(\w+)[[:space:]]+_IO[RW]*\([[:space:]]*KVMIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
  $

Some are also include by:

  tools/perf/arch/x86/util/kvm-stat.c
  tools/perf/arch/powerpc/util/kvm-stat.c

This addresses these tools/perf build warnings:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
  Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/kvm.h' differs from latest version at 'arch/powerpc/include/uapi/asm/kvm.h'
  diff -u tools/arch/powerpc/include/uapi/asm/kvm.h arch/powerpc/include/uapi/asm/kvm.h
  Warning: Kernel ABI header at 'tools/arch/arm/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm/include/uapi/asm/kvm.h'
  diff -u tools/arch/arm/include/uapi/asm/kvm.h arch/arm/include/uapi/asm/kvm.h
  Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'
  diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: Fabiano Rosas <farosas@linux.ibm.com>
Cc: Greg Kurz <groug@kaod.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Steven Price <steven.price@arm.com>
Link: https://lkml.kernel.org/n/tip-qrjdudhq25mk5bfnhveofbm4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-02 12:54:13 -03:00
Arnaldo Carvalho de Melo 8122b047dd tools arch x86: Sync the msr-index.h copy with the kernel sources
To pick up the changes from these csets:

  3f3c8be973 Merge tag 'for-linus-5.5a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
  4e3f77d841 ("xen/mcelog: add PPIN to record when available")
  db4d30fbb7 ("x86/bugs: Add ITLB_MULTIHIT bug infrastructure")
  1b42f01741 ("x86/speculation/taa: Add mitigation for TSX Async Abort")
  c2955f270a ("x86/msr: Add the IA32_TSX_CTRL MSR")

These are the changes in tooling that this udpate ensues:

  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > /tmp/before
  $
  $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
  $
  $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > /tmp/after
  $ diff -u /tmp/before /tmp/after
  --- /tmp/before	2019-12-02 11:54:44.371035723 -0300
  +++ /tmp/after	2019-12-02 11:55:31.847859784 -0300
  @@ -48,6 +48,7 @@
   	[0x00000119] = "IA32_BBL_CR_CTL",
   	[0x0000011e] = "IA32_BBL_CR_CTL3",
   	[0x00000120] = "IDT_MCR_CTRL",
  +	[0x00000122] = "IA32_TSX_CTRL",
   	[0x00000140] = "MISC_FEATURES_ENABLES",
   	[0x00000174] = "IA32_SYSENTER_CS",
   	[0x00000175] = "IA32_SYSENTER_ESP",
  @@ -283,4 +284,6 @@
   	[0xc0010240 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTL",
   	[0xc0010241 - x86_AMD_V_KVM_MSRs_offset] = "F15H_NB_PERF_CTR",
   	[0xc0010280 - x86_AMD_V_KVM_MSRs_offset] = "F15H_PTSC",
  +	[0xc00102f0 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN_CTL",
  +	[0xc00102f1 - x86_AMD_V_KVM_MSRs_offset] = "AMD_PPIN",
   };
  $

  CC       /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
  LD       /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
  LD       /tmp/build/perf/trace/beauty/perf-in.o
  LD       /tmp/build/perf/perf-in.o

Now it is possible to use these strings when setting up filters for the msr:*
tracepoints, like:

  # perf trace -e msr:* --filter=msr==IA32_TSX_CTRL
  ^C[root@quaco ~]#

If we use an invalid operator we can check what is the filter that is put in
place:

  # perf trace -e msr:* --filter=msr=IA32_TSX_CTRL
  Failed to set filter "(msr=0x122) && (common_pid != 25976 && common_pid != 25860)" on event msr:read_msr with 22 (Invalid argument)

One can as well use -v to see the tracepoints and its filters:

  # perf trace -v -e msr:* --filter=msr==IA32_TSX_CTRL
  Using CPUID GenuineIntel-6-8E-A
  New filter for msr:read_msr: (msr==0x122) && (common_pid != 26110 && common_pid != 25860)
  New filter for msr:write_msr: (msr==0x122) && (common_pid != 26110 && common_pid != 25860)
  New filter for msr:rdpmc: (msr==0x122) && (common_pid != 26110 && common_pid != 25860)
  mmap size 528384B
  ^C#

Better than keep looking up those numbers, works with callchains as
well, e.g. for something more common:

  # perf trace -e msr:*/max-stack=16/ --filter="msr==IA32_SPEC_CTRL" --max-events=2
       0.000 SCTP timer/6158 msr:write_msr(msr: IA32_SPEC_CTRL, val: 6)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         __switch_to_xtra ([kernel.kallsyms])
                                         __switch_to ([kernel.kallsyms])
                                         __sched_text_start ([kernel.kallsyms])
                                         schedule ([kernel.kallsyms])
                                         schedule_hrtimeout_range_clock ([kernel.kallsyms])
                                         poll_schedule_timeout.constprop.0 ([kernel.kallsyms])
                                         do_select ([kernel.kallsyms])
                                         core_sys_select ([kernel.kallsyms])
                                         kern_select ([kernel.kallsyms])
                                         __x64_sys_select ([kernel.kallsyms])
                                         do_syscall_64 ([kernel.kallsyms])
                                         entry_SYSCALL_64 ([kernel.kallsyms])
                                         __select (/usr/lib64/libc-2.29.so)
                                         [0] ([unknown])
       0.024 :0/0 msr:write_msr(msr: IA32_SPEC_CTRL)
                                         do_trace_write_msr ([kernel.kallsyms])
                                         do_trace_write_msr ([kernel.kallsyms])
                                         __switch_to_xtra ([kernel.kallsyms])
                                         __switch_to ([kernel.kallsyms])
                                         __sched_text_start ([kernel.kallsyms])
                                         schedule_idle ([kernel.kallsyms])
                                         do_idle ([kernel.kallsyms])
                                         cpu_startup_entry ([kernel.kallsyms])
                                         start_secondary ([kernel.kallsyms])
                                         [0x2000d4] ([kernel.kallsyms])
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vineela Tummalapalli <vineela.tummalapalli@intel.com>
Link: https://lkml.kernel.org/n/tip-n1xd78fpd5lxn4q1brqi2jl6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-02 12:03:49 -03:00
Arnaldo Carvalho de Melo bd5c6b81dd perf bench: Update the copies of x86's mem{cpy,set}_64.S
And update linux/linkage.h, which requires in turn that we make these
files switch from ENTRY()/ENDPROC() to SYM_FUNC_START()/SYM_FUNC_END():

  tools/perf/arch/arm64/tests/regs_load.S
  tools/perf/arch/arm/tests/regs_load.S
  tools/perf/arch/powerpc/tests/regs_load.S
  tools/perf/arch/x86/tests/regs_load.S

We also need to switch SYM_FUNC_START_LOCAL() to SYM_FUNC_START() for
the functions used directly by 'perf bench', and update
tools/perf/check_headers.sh to ignore those changes when checking if the
kernel original files drifted from the copies we carry.

This is to get the changes from:

  6dcc5627f6 ("x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*")
  ef1e03152c ("x86/asm: Make some functions local")
  e9b9d020c4 ("x86/asm: Annotate aliases")

And address these tools/perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
  diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S
  Warning: Kernel ABI header at 'tools/arch/x86/lib/memset_64.S' differs from latest version at 'arch/x86/lib/memset_64.S'
  diff -u tools/arch/x86/lib/memset_64.S arch/x86/lib/memset_64.S

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-tay3l8x8k11p7y3qcpqh9qh5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-12-02 11:40:57 -03:00
Ingo Molnar e680a41fca perf/core improvements and fixes:
perf script:
 
   Adrian Hunter:
 
   - Fix brstackinsn for AUXTRACE.
 
   - Fix invalid LBR/binary mismatch error.
 
 perf diff:
 
   Arnaldo Carvalho de Melo:
 
   - Use llabs() with 64-bit values, fixing the build in some 32-bit
     architectures.
 
 perf pmu:
 
   Andi Kleen:
 
   - Use file system cache to optimize sysfs access.
 
 x86:
 
   Adrian Hunter:
 
   - Add some more Intel instructions to the opcode map and to the perf
     test entry:
 
       gf2p8affineinvqb, gf2p8affineqb, gf2p8mulb, v4fmaddps,
       v4fmaddss, v4fnmaddps, v4fnmaddss, vaesdec, vaesdeclast, vaesenc,
       vaesenclast, vcvtne2ps2bf16, vcvtneps2bf16, vdpbf16ps,
       vgf2p8affineinvqb, vgf2p8affineqb, vgf2p8mulb, vp2intersectd,
       vp2intersectq, vp4dpwssd, vp4dpwssds, vpclmulqdq, vpcompressb,
       vpcompressw, vpdpbusd, vpdpbusds, vpdpwssd, vpdpwssds, vpexpandb,
       vpexpandw, vpopcntb, vpopcntd, vpopcntq, vpopcntw, vpshldd, vpshldq,
       vpshldvd, vpshldvq, vpshldvw, vpshldw, vpshrdd, vpshrdq, vpshrdvd,
       vpshrdvq, vpshrdvw, vpshrdw, vpshufbitqmb.
 
 perf affinity:
 
   Andi Kleen:
 
   - Add infrastructure to save/restore affinity
 
 perf maps:
 
   Arnaldo Carvalho de Melo:
 
   - Merge 'struct maps' with 'struct map_groups', as there is a
     1x1 relationship, simplifying code overal.
 
 perf build:
 
   Jiri Olsa:
 
   - Allow to link with libbpf dynamicaly.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.5-20191128' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

perf script:

  Adrian Hunter:

  - Fix brstackinsn for AUXTRACE.

  - Fix invalid LBR/binary mismatch error.

perf diff:

  Arnaldo Carvalho de Melo:

  - Use llabs() with 64-bit values, fixing the build in some 32-bit
    architectures.

perf pmu:

  Andi Kleen:

  - Use file system cache to optimize sysfs access.

x86:

  Adrian Hunter:

  - Add some more Intel instructions to the opcode map and to the perf
    test entry:

      gf2p8affineinvqb, gf2p8affineqb, gf2p8mulb, v4fmaddps,
      v4fmaddss, v4fnmaddps, v4fnmaddss, vaesdec, vaesdeclast, vaesenc,
      vaesenclast, vcvtne2ps2bf16, vcvtneps2bf16, vdpbf16ps,
      vgf2p8affineinvqb, vgf2p8affineqb, vgf2p8mulb, vp2intersectd,
      vp2intersectq, vp4dpwssd, vp4dpwssds, vpclmulqdq, vpcompressb,
      vpcompressw, vpdpbusd, vpdpbusds, vpdpwssd, vpdpwssds, vpexpandb,
      vpexpandw, vpopcntb, vpopcntd, vpopcntq, vpopcntw, vpshldd, vpshldq,
      vpshldvd, vpshldvq, vpshldvw, vpshldw, vpshrdd, vpshrdq, vpshrdvd,
      vpshrdvq, vpshrdvw, vpshrdw, vpshufbitqmb.

perf affinity:

  Andi Kleen:

  - Add infrastructure to save/restore affinity

perf maps:

  Arnaldo Carvalho de Melo:

  - Merge 'struct maps' with 'struct map_groups', as there is a
    1x1 relationship, simplifying code overal.

perf build:

  Jiri Olsa:

  - Allow to link with libbpf dynamicaly.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-29 06:56:05 +01:00
Linus Torvalds 3f59dbcace Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
 "The main kernel side changes in this cycle were:

   - Various Intel-PT updates and optimizations (Alexander Shishkin)

   - Prohibit kprobes on Xen/KVM emulate prefixes (Masami Hiramatsu)

   - Add support for LSM and SELinux checks to control access to the
     perf syscall (Joel Fernandes)

   - Misc other changes, optimizations, fixes and cleanups - see the
     shortlog for details.

  There were numerous tooling changes as well - 254 non-merge commits.
  Here are the main changes - too many to list in detail:

   - Enhancements to core tooling infrastructure, perf.data, libperf,
     libtraceevent, event parsing, vendor events, Intel PT, callchains,
     BPF support and instruction decoding.

   - There were updates to the following tools:

        perf annotate
        perf diff
        perf inject
        perf kvm
        perf list
        perf maps
        perf parse
        perf probe
        perf record
        perf report
        perf script
        perf stat
        perf test
        perf trace

   - And a lot of other changes: please see the shortlog and Git log for
     more details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (279 commits)
  perf parse: Fix potential memory leak when handling tracepoint errors
  perf probe: Fix spelling mistake "addrees" -> "address"
  libtraceevent: Fix memory leakage in copy_filter_type
  libtraceevent: Fix header installation
  perf intel-bts: Does not support AUX area sampling
  perf intel-pt: Add support for decoding AUX area samples
  perf intel-pt: Add support for recording AUX area samples
  perf pmu: When using default config, record which bits of config were changed by the user
  perf auxtrace: Add support for queuing AUX area samples
  perf session: Add facility to peek at all events
  perf auxtrace: Add support for dumping AUX area samples
  perf inject: Cut AUX area samples
  perf record: Add aux-sample-size config term
  perf record: Add support for AUX area sampling
  perf auxtrace: Add support for AUX area sample recording
  perf auxtrace: Move perf_evsel__find_pmu()
  perf record: Add a function to test for kernel support for AUX area sampling
  perf tools: Add kernel AUX area sampling definitions
  perf/core: Make the mlock accounting simple again
  perf report: Jump to symbol source view from total cycles view
  ...
2019-11-26 15:04:47 -08:00
Linus Torvalds a25bbc2644 Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu and fpu updates from Ingo Molnar:

 - math-emu fixes

 - CPUID updates

 - sanity-check RDRAND output to see whether the CPU at least pretends
   to produce random data

 - various unaligned-access across cachelines fixes in preparation of
   hardware level split-lock detection

 - fix MAXSMP constraints to not allow !CPUMASK_OFFSTACK kernels with
   larger than 512 NR_CPUS

 - misc FPU related cleanups

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Align the x86_capability array to size of unsigned long
  x86/cpu: Align cpu_caps_cleared and cpu_caps_set to unsigned long
  x86/umip: Make the comments vendor-agnostic
  x86/Kconfig: Rename UMIP config parameter
  x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK
  x86/cpufeatures: Add feature bit RDPRU on AMD
  x86/math-emu: Limit MATH_EMULATION to 486SX compatibles
  x86/math-emu: Check __copy_from_user() result
  x86/rdrand: Sanity-check RDRAND output

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Use XFEATURE_FP/SSE enum values instead of hardcoded numbers
  x86/fpu: Shrink space allocated for xstate_comp_offsets
  x86/fpu: Update stale variable name in comment
2019-11-26 08:58:08 -08:00
Linus Torvalds fd2615908d Merge branches 'core-objtool-for-linus', 'x86-cleanups-for-linus' and 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 objtool, cleanup, and apic updates from Ingo Molnar:
 "Objtool:

   - Fix a gawk 5.0 incompatibility in gen-insn-attr-x86.awk. Most
     distros are still on gawk 4.2.x.

  Cleanup:

   - Misc cleanups, plus the removal of obsolete code such as Calgary
     IOMMU support, which code hasn't seen any real testing in a long
     time and there's no known users left.

  apic:

   - Two changes: a cleanup and a fix for an (old) race for oneshot
     threaded IRQ handlers"

* 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/insn: Fix awk regexp warnings

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove unused asm/rio.h
  x86: Fix typos in comments
  x86/pci: Remove #ifdef __KERNEL__ guard from <asm/pci.h>
  x86/pci: Remove pci_64.h
  x86: Remove the calgary IOMMU driver
  x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments
  x86/kdump: Remove the unused crash_copy_backup_region()
  x86/nmi: Remove stale EDAC include leftover

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioapic: Rename misnamed functions
  x86/ioapic: Prevent inconsistent state when moving an interrupt
2019-11-26 08:21:54 -08:00
Adrian Hunter af4933c121 x86/insn: Add some more Intel instructions to the opcode map
Add to the opcode map the following instructions:

	v4fmaddps
	v4fmaddss
	v4fnmaddps
	v4fnmaddss
	vaesdec
	vaesdeclast
	vaesenc
	vaesenclast
	vcvtne2ps2bf16
	vcvtneps2bf16
	vdpbf16ps
	gf2p8affineinvqb
	vgf2p8affineinvqb
	gf2p8affineqb
	vgf2p8affineqb
	gf2p8mulb
	vgf2p8mulb
	vp2intersectd
	vp2intersectq
	vp4dpwssd
	vp4dpwssds
	vpclmulqdq
	vpcompressb
	vpcompressw
	vpdpbusd
	vpdpbusds
	vpdpwssd
	vpdpwssds
	vpexpandb
	vpexpandw
	vpopcntb
	vpopcntd
	vpopcntq
	vpopcntw
	vpshldd
	vpshldq
	vpshldvd
	vpshldvq
	vpshldvw
	vpshldw
	vpshrdd
	vpshrdq
	vpshrdvd
	vpshrdvq
	vpshrdvw
	vpshrdw
	vpshufbitqmb

For information about the instructions, refer Intel SDM May 2019
(325462-070US) and Intel Architecture Instruction Set Extensions May
2019 (319433-037).

The instruction decoding can be tested using the perf tools' "x86
instruction decoder - new instructions" test e.g.

  $ perf test -v "new " 2>&1 | grep -i 'v4fmaddps'
  Decoded ok: 62 f2 7f 48 9a 20                   v4fmaddps (%eax),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a a4 c8 78 56 34 12    v4fmaddps 0x12345678(%eax,%ecx,8),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a 20                   v4fmaddps (%rax),%zmm0,%zmm4
  Decoded ok: 67 62 f2 7f 48 9a 20                v4fmaddps (%eax),%zmm0,%zmm4
  Decoded ok: 62 f2 7f 48 9a a4 c8 78 56 34 12    v4fmaddps 0x12345678(%rax,%rcx,8),%zmm0,%zmm4
  Decoded ok: 67 62 f2 7f 48 9a a4 c8 78 56 34 12 v4fmaddps 0x12345678(%eax,%ecx,8),%zmm0,%zmm4

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20191125125044.31879-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-26 11:07:46 -03:00
Ingo Molnar ceb9e77324 Merge branch 'x86/core' into perf/core, to resolve conflicts and to pick up completed topic tree
Conflicts:
	tools/perf/check-headers.sh

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-25 09:09:27 +01:00
Adrian Hunter b980be189c x86/insn: Add some Intel instructions to the opcode map
Add to the opcode map the following instructions:
        cldemote
        tpause
        umonitor
        umwait
        movdiri
        movdir64b
        enqcmd
        enqcmds
        encls
        enclu
        enclv
        pconfig
        wbnoinvd

For information about the instructions, refer Intel SDM May 2019
(325462-070US) and Intel Architecture Instruction Set Extensions
May 2019 (319433-037).

The instruction decoding can be tested using the perf tools'
"x86 instruction decoder - new instructions" test as folllows:

  $ perf test -v "new " 2>&1 | grep -i cldemote
  Decoded ok: 0f 1c 00                    cldemote (%eax)
  Decoded ok: 0f 1c 05 78 56 34 12        cldemote 0x12345678
  Decoded ok: 0f 1c 84 c8 78 56 34 12     cldemote 0x12345678(%eax,%ecx,8)
  Decoded ok: 0f 1c 00                    cldemote (%rax)
  Decoded ok: 41 0f 1c 00                 cldemote (%r8)
  Decoded ok: 0f 1c 04 25 78 56 34 12     cldemote 0x12345678
  Decoded ok: 0f 1c 84 c8 78 56 34 12     cldemote 0x12345678(%rax,%rcx,8)
  Decoded ok: 41 0f 1c 84 c8 78 56 34 12  cldemote 0x12345678(%r8,%rcx,8)
  $ perf test -v "new " 2>&1 | grep -i tpause
  Decoded ok: 66 0f ae f3                 tpause %ebx
  Decoded ok: 66 0f ae f3                 tpause %ebx
  Decoded ok: 66 41 0f ae f0              tpause %r8d
  $ perf test -v "new " 2>&1 | grep -i umonitor
  Decoded ok: 67 f3 0f ae f0              umonitor %ax
  Decoded ok: f3 0f ae f0                 umonitor %eax
  Decoded ok: 67 f3 0f ae f0              umonitor %eax
  Decoded ok: f3 0f ae f0                 umonitor %rax
  Decoded ok: 67 f3 41 0f ae f0           umonitor %r8d
  $ perf test -v "new " 2>&1 | grep -i umwait
  Decoded ok: f2 0f ae f0                 umwait %eax
  Decoded ok: f2 0f ae f0                 umwait %eax
  Decoded ok: f2 41 0f ae f0              umwait %r8d
  $ perf test -v "new " 2>&1 | grep -i movdiri
  Decoded ok: 0f 38 f9 03                 movdiri %eax,(%ebx)
  Decoded ok: 0f 38 f9 88 78 56 34 12     movdiri %ecx,0x12345678(%eax)
  Decoded ok: 48 0f 38 f9 03              movdiri %rax,(%rbx)
  Decoded ok: 48 0f 38 f9 88 78 56 34 12  movdiri %rcx,0x12345678(%rax)
  $ perf test -v "new " 2>&1 | grep -i movdir64b
  Decoded ok: 66 0f 38 f8 18              movdir64b (%eax),%ebx
  Decoded ok: 66 0f 38 f8 88 78 56 34 12  movdir64b 0x12345678(%eax),%ecx
  Decoded ok: 67 66 0f 38 f8 1c           movdir64b (%si),%bx
  Decoded ok: 67 66 0f 38 f8 8c 34 12     movdir64b 0x1234(%si),%cx
  Decoded ok: 66 0f 38 f8 18              movdir64b (%rax),%rbx
  Decoded ok: 66 0f 38 f8 88 78 56 34 12  movdir64b 0x12345678(%rax),%rcx
  Decoded ok: 67 66 0f 38 f8 18           movdir64b (%eax),%ebx
  Decoded ok: 67 66 0f 38 f8 88 78 56 34 12       movdir64b 0x12345678(%eax),%ecx
  $ perf test -v "new " 2>&1 | grep -i enqcmd
  Decoded ok: f2 0f 38 f8 18              enqcmd (%eax),%ebx
  Decoded ok: f2 0f 38 f8 88 78 56 34 12  enqcmd 0x12345678(%eax),%ecx
  Decoded ok: 67 f2 0f 38 f8 1c           enqcmd (%si),%bx
  Decoded ok: 67 f2 0f 38 f8 8c 34 12     enqcmd 0x1234(%si),%cx
  Decoded ok: f3 0f 38 f8 18              enqcmds (%eax),%ebx
  Decoded ok: f3 0f 38 f8 88 78 56 34 12  enqcmds 0x12345678(%eax),%ecx
  Decoded ok: 67 f3 0f 38 f8 1c           enqcmds (%si),%bx
  Decoded ok: 67 f3 0f 38 f8 8c 34 12     enqcmds 0x1234(%si),%cx
  Decoded ok: f2 0f 38 f8 18              enqcmd (%rax),%rbx
  Decoded ok: f2 0f 38 f8 88 78 56 34 12  enqcmd 0x12345678(%rax),%rcx
  Decoded ok: 67 f2 0f 38 f8 18           enqcmd (%eax),%ebx
  Decoded ok: 67 f2 0f 38 f8 88 78 56 34 12       enqcmd 0x12345678(%eax),%ecx
  Decoded ok: f3 0f 38 f8 18              enqcmds (%rax),%rbx
  Decoded ok: f3 0f 38 f8 88 78 56 34 12  enqcmds 0x12345678(%rax),%rcx
  Decoded ok: 67 f3 0f 38 f8 18           enqcmds (%eax),%ebx
  Decoded ok: 67 f3 0f 38 f8 88 78 56 34 12       enqcmds 0x12345678(%eax),%ecx
  $ perf test -v "new " 2>&1 | grep -i enqcmds
  Decoded ok: f3 0f 38 f8 18              enqcmds (%eax),%ebx
  Decoded ok: f3 0f 38 f8 88 78 56 34 12  enqcmds 0x12345678(%eax),%ecx
  Decoded ok: 67 f3 0f 38 f8 1c           enqcmds (%si),%bx
  Decoded ok: 67 f3 0f 38 f8 8c 34 12     enqcmds 0x1234(%si),%cx
  Decoded ok: f3 0f 38 f8 18              enqcmds (%rax),%rbx
  Decoded ok: f3 0f 38 f8 88 78 56 34 12  enqcmds 0x12345678(%rax),%rcx
  Decoded ok: 67 f3 0f 38 f8 18           enqcmds (%eax),%ebx
  Decoded ok: 67 f3 0f 38 f8 88 78 56 34 12       enqcmds 0x12345678(%eax),%ecx
  $ perf test -v "new " 2>&1 | grep -i encls
  Decoded ok: 0f 01 cf                    encls
  Decoded ok: 0f 01 cf                    encls
  $ perf test -v "new " 2>&1 | grep -i enclu
  Decoded ok: 0f 01 d7                    enclu
  Decoded ok: 0f 01 d7                    enclu
  $ perf test -v "new " 2>&1 | grep -i enclv
  Decoded ok: 0f 01 c0                    enclv
  Decoded ok: 0f 01 c0                    enclv
  $ perf test -v "new " 2>&1 | grep -i pconfig
  Decoded ok: 0f 01 c5                    pconfig
  Decoded ok: 0f 01 c5                    pconfig
  $ perf test -v "new " 2>&1 | grep -i wbnoinvd
  Decoded ok: f3 0f 09                    wbnoinvd
  Decoded ok: f3 0f 09                    wbnoinvd

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20191115135447.6519-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-11-18 18:54:45 -03:00
Babu Moger b971880fe7 x86/Kconfig: Rename UMIP config parameter
AMD 2nd generation EPYC processors support the UMIP (User-Mode
Instruction Prevention) feature. So, rename X86_INTEL_UMIP to
generic X86_UMIP and modify the text to cover both Intel and AMD.

 [ bp: take of the disabled-features.h copy in tools/ too. ]

Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "x86@kernel.org" <x86@kernel.org>
Link: https://lkml.kernel.org/r/157298912544.17462.2018334793891409521.stgit@naples-babu.amd.com
2019-11-07 11:07:29 +01:00
Ingo Molnar 27a0a90d63 perf/core improvements and fixes:
perf trace:
 
 - Add syscall failure stats to -s/--summary and -S/--with-summary, works in
   combination with specifying just a set of syscalls, see below first with
   -s/--summary, then with -S/--with-summary just for the syscalls we saw failing
   with -s:
 
     # perf trace -s sleep 1
 
      Summary of events:
 
      sleep (16218), 80 events, 93.0%
 
        syscall     calls  errors  total      min      avg      max   stddev
                                   (msec)   (msec)   (msec)   (msec)    (%)
        ----------- -----  ------ -------- -------- -------- -------- ------
        nanosleep       1      0  1000.091 1000.091 1000.091 1000.091  0.00%
        mmap            8      0     0.045    0.005    0.006    0.008  7.09%
        mprotect        4      0     0.028    0.005    0.007    0.009 11.38%
        openat          3      0     0.021    0.005    0.007    0.009 14.07%
        munmap          1      0     0.017    0.017    0.017    0.017  0.00%
        brk             4      0     0.010    0.001    0.002    0.004 23.15%
        read            4      0     0.009    0.002    0.002    0.003  8.13%
        close           5      0     0.008    0.001    0.002    0.002 10.83%
        fstat           3      0     0.006    0.002    0.002    0.002  6.97%
        access          1      1     0.006    0.006    0.006    0.006  0.00%
        lseek           3      0     0.005    0.001    0.002    0.002  7.37%
        arch_prctl      2      1     0.004    0.001    0.002    0.002 17.64%
        execve          1      0     0.000    0.000    0.000    0.000  0.00%
 
     # perf trace -e access,arch_prctl -S sleep 1
          0.000 ( 0.006 ms): sleep/19503 arch_prctl(option: 0x3001, arg2: 0x7fff165996b0) = -1 EINVAL (Invalid argument)
          0.024 ( 0.006 ms): sleep/19503 access(filename: 0x2177e510, mode: R)            = -1 ENOENT (No such file or directory)
          0.136 ( 0.002 ms): sleep/19503 arch_prctl(option: SET_FS, arg2: 0x7f9421737580) = 0
 
      Summary of events:
 
      sleep (19503), 6 events, 50.0%
 
        syscall    calls  errors total    min    avg    max  stddev
                                 (msec) (msec) (msec) (msec)    (%)
        ---------- -----  ------ ------ ------ ------ ------ ------
        arch_prctl   2       1    0.008  0.002  0.004  0.006 57.22%
        access       1       1    0.006  0.006  0.006  0.006  0.00%
 
     #
 
   - Introduce --errno-summary, to drill down a bit more in the errno stats:
 
     # perf trace --errno-summary -e access,arch_prctl -S sleep 1
          0.000 ( 0.006 ms): sleep/5587 arch_prctl(option: 0x3001, arg2: 0x7ffd6ba6aa00) = -1 EINVAL (Invalid argument)
          0.028 ( 0.007 ms): sleep/5587 access(filename: 0xb83d9510, mode: R)            = -1 ENOENT (No such file or directory)
          0.172 ( 0.003 ms): sleep/5587 arch_prctl(option: SET_FS, arg2: 0x7f45b8392580) = 0
 
      Summary of events:
 
      sleep (5587), 6 events, 50.0%
 
        syscall    calls  errors total    min    avg    max  stddev
                                 (msec) (msec) (msec) (msec)   (%)
        ---------- -----  ------ ------ ------ ------ ------ ------
        arch_prctl     2     1    0.009  0.003  0.005  0.006 38.90%
 			   EINVAL: 1
        access         1     1    0.007  0.007  0.007  0.007  0.00%
                            ENOENT: 1
     #
 
   - Filter own pid to avoid a feedback look in 'perf trace record -a'
 
   - Add the glue for the auto generated x86 IRQ vector array.
 
   - Show error message when not finding a field used in a filter expression
 
     # perf trace --max-events=4 -e syscalls:sys_enter_write --filter="cnt>32767"
     Failed to set filter "(cnt>32767) && (common_pid != 19938 && common_pid != 8922)" on event syscalls:sys_enter_write with 22 (Invalid argument)
     #
     # perf trace --max-events=4 -e syscalls:sys_enter_write --filter="count>32767"
          0.000 python3.5/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0dc53600, count: 172086)
         12.641 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0db63660, count: 75994)
         27.738 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0db4b1e0, count: 41635)
        136.070 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0dbab510, count: 62232)
     #
 
   - Add a generator for x86's IRQ vectors -> strings
 
   - Introduce stroul() (string -> number) methods for the strarray and
     strarrays classes, also strtoul_flags, allowing to go from both strings
     and or-ed strings to numbers, allowing things like:
 
     # perf trace -e syscalls:sys_enter_mmap --filter="flags==DENYWRITE|PRIVATE|FIXED" sleep 1
          0.000 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2aa5000, len: 1363968, prot: READ|EXEC, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x22000)
          0.011 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2bf2000, len: 311296, prot: READ, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x16f000)
          0.015 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2c3f000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x1bb000)
     #
 
   Allowing to narrow down from the complete set of mmap calls for that workload:
 
     # perf trace -e syscalls:sys_enter_mmap sleep 1
          0.000 sleep/22695 syscalls:sys_enter_mmap(len: 134773, prot: READ, flags: PRIVATE, fd: 3)
          0.041 sleep/22695 syscalls:sys_enter_mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS)
          0.053 sleep/22695 syscalls:sys_enter_mmap(len: 1857472, prot: READ, flags: PRIVATE|DENYWRITE, fd: 3)
          0.069 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd23ffb6000, len: 1363968, prot: READ|EXEC, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x22000)
          0.077 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240103000, len: 311296, prot: READ, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x16f000)
          0.083 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240150000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x1bb000)
          0.095 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240156000, len: 14272, prot: READ|WRITE, flags: PRIVATE|FIXED|ANONYMOUS)
          0.339 sleep/22695 syscalls:sys_enter_mmap(len: 217750512, prot: READ, flags: PRIVATE, fd: 3)
     #
 
   Works with all targets, so, for system wide, looking at who calls mmap with flags set to just "PRIVATE":
 
     # perf trace --max-events=5 -e syscalls:sys_enter_mmap --filter="flags==PRIVATE"
          0.000 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
          0.050 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
          0.062 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
          0.145 goa-identity-s/2240 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 18)
          0.183 goa-identity-s/2240 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 18)
     #
 
   # perf trace --max-events=2 -e syscalls:sys_enter_lseek --filter="whence==SET && offset != 0"
          0.000 Cache2 I/O/12047 syscalls:sys_enter_lseek(fd: 277, offset: 43, whence: SET)
       1142.070 mozStorage #5/12302 syscalls:sys_enter_lseek(fd: 44</home/acme/.mozilla/firefox/ina67tev.default/cookies.sqlite-wal>, offset: 393536, whence: SET)
   #
 
 perf annotate:
 
   - Fix objdump --no-show-raw-insn flag to work with goth gcc and clang.
 
   - Streamline objdump execution, preserving the right error codes for better
     reporting to user.
 
 perf report:
 
   - Add warning when libunwind not compiled in.
 
 perf stat:
 
   Jin Yao:
 
   - Support --all-kernel/--all-user, to match options available in 'perf record',
     asking that all the events specified work just with kernel or user events.
 
 perf list:
 
   Jin Yao:
 
   - Hide deprecated events by default, allow showing them with --deprecated.
 
 libbperf:
 
   Jiri Olsa:
 
   - Allow to build with -ltcmalloc.
 
   - Finish mmap interface, getting more stuff from tools/perf while adding
     abstractions to avoid pulling too much stuff, to get libperf to grow as
     tools needs things like auxtrace, etc.
 
 perf scripting engines:
 
   Steven Rostedt (VMware):
 
   - Iterate on tep event arrays directly, fixing script generation with
     '-g python' when having multiple tracepoints in a perf.data file.
 
 core:
 
   - Allow to build with -ltcmalloc.
 
 perf test:
 
   Leo Yan:
 
   - Report failure for mmap events.
 
   - Avoid infinite loop for task exit case.
 
   - Remove needless headers for bp_account test.
 
   - Add dedicated checking helper is_supported().
 
   - Disable bp_signal testing for arm64.
 
 Vendor events:
 
 arm64:
 
   John Garry:
 
   - Fix Hisi hip08 DDRC PMU eventname.
 
   - Add some missing events for Hisi hip08 DDRC, L3C and HHA PMUs.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.5-20191021' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

perf trace:

- Add syscall failure stats to -s/--summary and -S/--with-summary, works in
  combination with specifying just a set of syscalls, see below first with
  -s/--summary, then with -S/--with-summary just for the syscalls we saw failing
  with -s:

    # perf trace -s sleep 1

     Summary of events:

     sleep (16218), 80 events, 93.0%

       syscall     calls  errors  total      min      avg      max   stddev
                                  (msec)   (msec)   (msec)   (msec)    (%)
       ----------- -----  ------ -------- -------- -------- -------- ------
       nanosleep       1      0  1000.091 1000.091 1000.091 1000.091  0.00%
       mmap            8      0     0.045    0.005    0.006    0.008  7.09%
       mprotect        4      0     0.028    0.005    0.007    0.009 11.38%
       openat          3      0     0.021    0.005    0.007    0.009 14.07%
       munmap          1      0     0.017    0.017    0.017    0.017  0.00%
       brk             4      0     0.010    0.001    0.002    0.004 23.15%
       read            4      0     0.009    0.002    0.002    0.003  8.13%
       close           5      0     0.008    0.001    0.002    0.002 10.83%
       fstat           3      0     0.006    0.002    0.002    0.002  6.97%
       access          1      1     0.006    0.006    0.006    0.006  0.00%
       lseek           3      0     0.005    0.001    0.002    0.002  7.37%
       arch_prctl      2      1     0.004    0.001    0.002    0.002 17.64%
       execve          1      0     0.000    0.000    0.000    0.000  0.00%

    # perf trace -e access,arch_prctl -S sleep 1
         0.000 ( 0.006 ms): sleep/19503 arch_prctl(option: 0x3001, arg2: 0x7fff165996b0) = -1 EINVAL (Invalid argument)
         0.024 ( 0.006 ms): sleep/19503 access(filename: 0x2177e510, mode: R)            = -1 ENOENT (No such file or directory)
         0.136 ( 0.002 ms): sleep/19503 arch_prctl(option: SET_FS, arg2: 0x7f9421737580) = 0

     Summary of events:

     sleep (19503), 6 events, 50.0%

       syscall    calls  errors total    min    avg    max  stddev
                                (msec) (msec) (msec) (msec)    (%)
       ---------- -----  ------ ------ ------ ------ ------ ------
       arch_prctl   2       1    0.008  0.002  0.004  0.006 57.22%
       access       1       1    0.006  0.006  0.006  0.006  0.00%

    #

  - Introduce --errno-summary, to drill down a bit more in the errno stats:

    # perf trace --errno-summary -e access,arch_prctl -S sleep 1
         0.000 ( 0.006 ms): sleep/5587 arch_prctl(option: 0x3001, arg2: 0x7ffd6ba6aa00) = -1 EINVAL (Invalid argument)
         0.028 ( 0.007 ms): sleep/5587 access(filename: 0xb83d9510, mode: R)            = -1 ENOENT (No such file or directory)
         0.172 ( 0.003 ms): sleep/5587 arch_prctl(option: SET_FS, arg2: 0x7f45b8392580) = 0

     Summary of events:

     sleep (5587), 6 events, 50.0%

       syscall    calls  errors total    min    avg    max  stddev
                                (msec) (msec) (msec) (msec)   (%)
       ---------- -----  ------ ------ ------ ------ ------ ------
       arch_prctl     2     1    0.009  0.003  0.005  0.006 38.90%
			   EINVAL: 1
       access         1     1    0.007  0.007  0.007  0.007  0.00%
                           ENOENT: 1
    #

  - Filter own pid to avoid a feedback look in 'perf trace record -a'

  - Add the glue for the auto generated x86 IRQ vector array.

  - Show error message when not finding a field used in a filter expression

    # perf trace --max-events=4 -e syscalls:sys_enter_write --filter="cnt>32767"
    Failed to set filter "(cnt>32767) && (common_pid != 19938 && common_pid != 8922)" on event syscalls:sys_enter_write with 22 (Invalid argument)
    #
    # perf trace --max-events=4 -e syscalls:sys_enter_write --filter="count>32767"
         0.000 python3.5/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0dc53600, count: 172086)
        12.641 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0db63660, count: 75994)
        27.738 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0db4b1e0, count: 41635)
       136.070 python3.5.post/17535 syscalls:sys_enter_write(fd: 3, buf: 0x564b0dbab510, count: 62232)
    #

  - Add a generator for x86's IRQ vectors -> strings

  - Introduce stroul() (string -> number) methods for the strarray and
    strarrays classes, also strtoul_flags, allowing to go from both strings
    and or-ed strings to numbers, allowing things like:

    # perf trace -e syscalls:sys_enter_mmap --filter="flags==DENYWRITE|PRIVATE|FIXED" sleep 1
         0.000 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2aa5000, len: 1363968, prot: READ|EXEC, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x22000)
         0.011 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2bf2000, len: 311296, prot: READ, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x16f000)
         0.015 sleep/22588 syscalls:sys_enter_mmap(addr: 0x7f42d2c3f000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x1bb000)
    #

  Allowing to narrow down from the complete set of mmap calls for that workload:

    # perf trace -e syscalls:sys_enter_mmap sleep 1
         0.000 sleep/22695 syscalls:sys_enter_mmap(len: 134773, prot: READ, flags: PRIVATE, fd: 3)
         0.041 sleep/22695 syscalls:sys_enter_mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS)
         0.053 sleep/22695 syscalls:sys_enter_mmap(len: 1857472, prot: READ, flags: PRIVATE|DENYWRITE, fd: 3)
         0.069 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd23ffb6000, len: 1363968, prot: READ|EXEC, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x22000)
         0.077 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240103000, len: 311296, prot: READ, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x16f000)
         0.083 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240150000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 0x1bb000)
         0.095 sleep/22695 syscalls:sys_enter_mmap(addr: 0x7fd240156000, len: 14272, prot: READ|WRITE, flags: PRIVATE|FIXED|ANONYMOUS)
         0.339 sleep/22695 syscalls:sys_enter_mmap(len: 217750512, prot: READ, flags: PRIVATE, fd: 3)
    #

  Works with all targets, so, for system wide, looking at who calls mmap with flags set to just "PRIVATE":

    # perf trace --max-events=5 -e syscalls:sys_enter_mmap --filter="flags==PRIVATE"
         0.000 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
         0.050 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
         0.062 pool/2242 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 14)
         0.145 goa-identity-s/2240 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 18)
         0.183 goa-identity-s/2240 syscalls:sys_enter_mmap(len: 756, prot: READ, flags: PRIVATE, fd: 18)
    #

  # perf trace --max-events=2 -e syscalls:sys_enter_lseek --filter="whence==SET && offset != 0"
         0.000 Cache2 I/O/12047 syscalls:sys_enter_lseek(fd: 277, offset: 43, whence: SET)
      1142.070 mozStorage #5/12302 syscalls:sys_enter_lseek(fd: 44</home/acme/.mozilla/firefox/ina67tev.default/cookies.sqlite-wal>, offset: 393536, whence: SET)
  #

perf annotate:

  - Fix objdump --no-show-raw-insn flag to work with goth gcc and clang.

  - Streamline objdump execution, preserving the right error codes for better
    reporting to user.

perf report:

  - Add warning when libunwind not compiled in.

perf stat:

  Jin Yao:

  - Support --all-kernel/--all-user, to match options available in 'perf record',
    asking that all the events specified work just with kernel or user events.

perf list:

  Jin Yao:

  - Hide deprecated events by default, allow showing them with --deprecated.

libbperf:

  Jiri Olsa:

  - Allow to build with -ltcmalloc.

  - Finish mmap interface, getting more stuff from tools/perf while adding
    abstractions to avoid pulling too much stuff, to get libperf to grow as
    tools needs things like auxtrace, etc.

perf scripting engines:

  Steven Rostedt (VMware):

  - Iterate on tep event arrays directly, fixing script generation with
    '-g python' when having multiple tracepoints in a perf.data file.

core:

  - Allow to build with -ltcmalloc.

perf test:

  Leo Yan:

  - Report failure for mmap events.

  - Avoid infinite loop for task exit case.

  - Remove needless headers for bp_account test.

  - Add dedicated checking helper is_supported().

  - Disable bp_signal testing for arm64.

Vendor events:

arm64:

  John Garry:

  - Fix Hisi hip08 DDRC PMU eventname.

  - Add some missing events for Hisi hip08 DDRC, L3C and HHA PMUs.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-10-22 01:15:45 +02:00
Ingo Molnar aa7a7b7297 Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-10-22 01:15:32 +02:00
Masami Hiramatsu 4d65adfcd1 x86: xen: insn: Decode Xen and KVM emulate-prefix signature
Decode Xen and KVM's emulate-prefix signature by x86 insn decoder.
It is called "prefix" but actually not x86 instruction prefix, so
this adds insn.emulate_prefix_size field instead of reusing
insn.prefixes.

If x86 decoder finds a special sequence of instructions of
XEN_EMULATE_PREFIX and 'ud2a; .ascii "kvm"', it just counts the
length, set insn.emulate_prefix_size and fold it with the next
instruction. In other words, the signature and the next instruction
is treated as a single instruction.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: x86@kernel.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: xen-devel@lists.xenproject.org
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: https://lkml.kernel.org/r/156777564986.25081.4964537658500952557.stgit@devnote2
2019-10-17 21:31:57 +02:00
Arnaldo Carvalho de Melo d2b72b7280 tools arch x86: Grab a copy of the file containing the IRQ vector defines
We'll use it to generate a table and then convert the irq_vectors:*
tracepoint 'vector' arg in things like perf trace, script, etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-z7gi058lzhnrm32slevg3xod@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-10-15 15:42:01 -03:00
Arnaldo Carvalho de Melo 7cb3a24457 tools headers kvm: Sync kvm headers with the kernel sources
To pick the changes in:

    0cb8410b90 ("kvm: svm: Intercept RDPRU")

That trigger a rebuild in too in tooling:

    CC       /tmp/build/perf/arch/x86/util/kvm-stat.o

But this time around no changes in tooling results, as SVM_EXIT_RDPRU
wasn't added to SVM_EXIT_REASONS, that is used in kvm-stat.c.

And addresses this perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/svm.h' differs from latest version at 'arch/x86/include/uapi/asm/svm.h'
  diff -u tools/arch/x86/include/uapi/asm/svm.h arch/x86/include/uapi/asm/svm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/n/tip-pqzkt1hmfpqph3ts8i6zzmim@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-10-15 12:30:08 -03:00
Arnaldo Carvalho de Melo 7a12f514c4 tools headers kvm: Sync kvm headers with the kernel sources
To pick the changes in:

  bf653b78f9 ("KVM: vmx: Introduce handle_unexpected_vmexit and handle WAITPKG vmexit")

That trigger these changes in tooling:

    CC       /tmp/build/perf/arch/x86/util/kvm-stat.o
    INSTALL  GTK UI
    DESCEND  plugins
  make[3]: Nothing to be done for '/tmp/build/perf/plugins/libtraceevent-dynamic-list'.
    INSTALL  trace_plugins
    LD       /tmp/build/perf/arch/x86/util/perf-in.o
    LD       /tmp/build/perf/arch/x86/perf-in.o
    LD       /tmp/build/perf/arch/perf-in.o
    LD       /tmp/build/perf/perf-in.o
    LINK     /tmp/build/perf/perf

And this is not just because that header is included, kvm-stat.c
uses the VMX_EXIT_REASONS define and it got changed by the above cset.

And addresses this perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h' differs from latest version at 'arch/x86/include/uapi/asm/vmx.h'
  diff -u tools/arch/x86/include/uapi/asm/vmx.h arch/x86/include/uapi/asm/vmx.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Tao Xu <tao3.xu@intel.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-gr1eel0hckmi5l3p2ewdpfxh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-10-15 12:28:18 -03:00
Arnaldo Carvalho de Melo 444e2ff34d tools arch x86: Grab a copy of the file containing the MSR numbers
We'll use it to generate a table and then convert the
msr:{read,write}_msr 'msr' option in things like perf trace, script,
etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-y1f4s0y1s43d4drh7pd2huzn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-10-07 12:22:18 -03:00