mirror of https://gitee.com/openkylin/linux.git
1230 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Yoann Congal
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eac53b3e30 |
Documentation: PM: Fix a reStructuredText syntax error
Fix a reStructuredText syntax error in the cpuidle PM admin-guide documentation: the ``...'' quotation marks are parsed as partial ''...'' reStructuredText markup and break the output formatting. This change them to "...". Signed-off-by: Yoann Congal <yoann.congal@smile.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Muchun Song
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8d3fe09d8d |
mm: memcontrol: fix missing suffix of workingset_restore
We forget to add the suffix to the workingset_restore string, so fix it.
And also update the documentation of cgroup-v2.rst.
Fixes:
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Milan Broz
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4c07ae0ad4 |
dm crypt: document encrypted keyring key option
Commit |
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Milan Broz
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4a5caa4af0 |
dm crypt: document new no_workqueue flags
Commit |
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Linus Torvalds
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2a1a4bee5e |
Char / Misc driver fixes for 5.9-rc5
Here are a number of small driver fixes for 5.9-rc5
Included in here are:
- habanalabs driver fixes
- interconnect driver fixes
- soundwire driver fixes
- dyndbg fixes for reported issues, and then reverts to fix it
all up to a sane state.
- phy driver fixes
Full details of these are in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver fixes from Greg KH:
"Here are a number of small driver fixes for 5.9-rc5
Included in here are:
- habanalabs driver fixes
- interconnect driver fixes
- soundwire driver fixes
- dyndbg fixes for reported issues, and then reverts to fix it all up
to a sane state.
- phy driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Revert "dyndbg: accept query terms like file=bar and module=foo"
Revert "dyndbg: fix problem parsing format="foo bar""
scripts/tags.sh: exclude tools directory from tags generation
video: fbdev: fix OOB read in vga_8planes_imageblit()
dyndbg: fix problem parsing format="foo bar"
dyndbg: refine export, rename to dynamic_debug_exec_queries()
dyndbg: give %3u width in pr-format, cosmetic only
interconnect: qcom: Fix small BW votes being truncated to zero
soundwire: fix double free of dangling pointer
interconnect: Show bandwidth for disabled paths as zero in debugfs
habanalabs: fix report of RAZWI initiator coordinates
habanalabs: prevent user buff overflow
phy: omap-usb2-phy: disable PHY charger detect
phy: qcom-qmp: Use correct values for ipq8074 PCIe Gen2 PHY init
soundwire: bus: fix typo in comment on INTSTAT registers
phy: qualcomm: fix return value check in qcom_ipq806x_usb_phy_probe()
phy: qualcomm: fix platform_no_drv_owner.cocci warnings
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Greg Kroah-Hartman
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952e934d7f |
Revert "dyndbg: accept query terms like file=bar and module=foo"
This reverts commit |
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Linus Torvalds
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f162626a03 |
Power management fixes for 5.9-rc4
- Fix reference counting of operating performance points (OPP)
tables (Viresh Kumar).
- Address intel_pstate driver interface issues, mostly related
to switching operation modes and handling CPU offline and
online and system-wide suspend/resume with hardware-managed
P-states (HWP) enabled (Rafael Wysocki).
- Fix the maximum frequency computation in the intel_pstate driver
with turbo P-states disabled by the platform firmware and HWP
enabled (Francisco Jerez).
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Merge tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix reference counting in the operating performance points (OPP)
framework and address a few intel_pstate driver issues, mostly related
to switching driver operation modes and similar with hardware-managed
P-states (HWP) enabled.
Specifics:
- Fix reference counting of operating performance points (OPP) tables
(Viresh Kumar).
- Address intel_pstate driver interface issues, mostly related to
switching operation modes and handling CPU offline and online and
system-wide suspend/resume with hardware-managed P-states (HWP)
enabled (Rafael Wysocki).
- Fix the maximum frequency computation in the intel_pstate driver
with turbo P-states disabled by the platform firmware and HWP
enabled (Francisco Jerez)"
* tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
cpufreq: intel_pstate: Free memory only when turning off
cpufreq: intel_pstate: Add ->offline and ->online callbacks
cpufreq: intel_pstate: Tweak the EPP sysfs interface
cpufreq: intel_pstate: Update cached EPP in the active mode
cpufreq: intel_pstate: Refuse to turn off with HWP enabled
opp: Don't drop reference for an OPP table that was never parsed
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Rafael J. Wysocki
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b388eb58ce |
cpufreq: intel_pstate: Tweak the EPP sysfs interface
Modify the EPP sysfs interface to reject attempts to change the EPP
to values different from 0 ("performance") in the active mode with
the "performance" policy (ie. scaling_governor set to "performance"),
to avoid situations in which the kernel appears to discard data
passed to it via the EPP sysfs attribute.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
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Linus Torvalds
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b51594df17 |
A handful of documentation fixes for 5.9.
-----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAl9NSsQPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YXHMH/jCJ+nafM8wFcPfEj04xUtGF9hHNvc3DIqOq qZy+yR+Jc/98c/9UVm/yYwQC3I/x/JAdyIy5mZ6Ez3oyoeBw4bNITArDZvOicULK XtJuhK8UDBjQKswjH4mkff6sz+0LjzTcsoK4L6gfs7St1aD87KeTyFeo2T5roI9s 7GV/sxHcavjKoEPJCVHAdOlBNG5g580C9fDF+0UfBqMyZ/5Zb0Wzi8UUsYibMCcd Bxc7FOUjA1ds838mNFU57RbLmCPvkIeywTThAO1hYWs6IJRGkZQG++a/fnSPskq9 aiySaOFJzFrSPWpCW5HC16zqckXSUTIOUmXTyBoFj4YYI9tcsZE= =9o7H -----END PGP SIGNATURE----- Merge tag 'docs-5.9-3' of git://git.lwn.net/linux Pull documentation fixes from Jonathan Corbet: "A handful of documentation fixes for 5.9" * tag 'docs-5.9-3' of git://git.lwn.net/linux: Documentation: laptops: thinkpad-acpi: fix underline length build warning Documentation: fix typo for abituguru documentation docs: Fix function name trailing double-()s devices.txt: fix typo of "ubd" as "udb" Documentation: add riscv entry in list of existing profiles MAINTAINERS: mention documentation maintainer entry profile Fpga: Documentation: Replace deprecated :c:func: Usage IIO: Documentation: Replace deprecated :c:func: Usage Documentation/locking/locktypes: fix local_locks documentation |
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Rafael J. Wysocki
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ef7d960403 |
Merge branch 'pm-cpufreq'
* pm-cpufreq: cpufreq: Use WARN_ON_ONCE() for invalid relation cpufreq: No need to verify cpufreq_driver in show_scaling_cur_freq() Documentation: fix pm/intel_pstate build warning and wording cpufreq: replace cpu_logical_map() with read_cpuid_mpir() |
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Randy Dunlap
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92001bc036 |
Documentation: laptops: thinkpad-acpi: fix underline length build warning
Fix underline length build warning in thinkpad-acpi.rst documentation:
Documentation/admin-guide/laptops/thinkpad-acpi.rst:1437: WARNING: Title underline too short.
DYTC Lapmode sensor
------------------
Fixes:
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Theodore Dubois
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15ab856955 |
devices.txt: fix typo of "ubd" as "udb"
Signed-off-by: Theodore Dubois <tblodt@icloud.com> Link: https://lore.kernel.org/r/20200816233823.86316-1-tblodt@icloud.com Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Randy Dunlap
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1c50282199 |
Documentation: fix pm/intel_pstate build warning and wording
Fix documentation build warning and sentence wording:
Documentation/admin-guide/pm/intel_pstate.rst:568: WARNING: Unexpected indentation.
Fixes:
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Linus Torvalds
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10c091b62e |
A set of EFI fixes:
- Enforce NX on RO data in mixed EFI mode
- Destroy workqueue in an error handling path to prevent UAF
- Stop argument parser at '--' which is the delimiter for init
- Treat a NULL command line pointer as empty instead of dereferncing it
unconditionally.
- Handle an unterminated command line correctly
- Cleanup the 32bit code leftovers and remove obsolete documentation
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Merge tag 'efi-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
- Enforce NX on RO data in mixed EFI mode
- Destroy workqueue in an error handling path to prevent UAF
- Stop argument parser at '--' which is the delimiter for init
- Treat a NULL command line pointer as empty instead of dereferncing it
unconditionally.
- Handle an unterminated command line correctly
- Cleanup the 32bit code leftovers and remove obsolete documentation
* tag 'efi-urgent-2020-08-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation: efi: remove description of efi=old_map
efi/x86: Move 32-bit code into efi_32.c
efi/libstub: Handle unterminated cmdline
efi/libstub: Handle NULL cmdline
efi/libstub: Stop parsing arguments at "--"
efi: add missed destroy_workqueue when efisubsys_init fails
efi/x86: Mark kernel rodata non-executable for mixed mode
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Linus Torvalds
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d723b99ec9 |
Improvements to ext4's block allocator performance for very large file
systems, especially when the file system or files which are highly fragmented. There is a new mount option, prefetch_block_bitmaps which will pull in the block bitmaps and set up the in-memory buddy bitmaps when the file system is initially mounted. Beyond that, a lot of bug fixes and cleanups. In particular, a number of changes to make ext4 more robust in the face of write errors or file system corruptions. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAl8/Q9YACgkQ8vlZVpUN gaPz+wgAkiWwpge0pfcukABW9FcHK9R82IPggA/NnFu0I+3trpqVQP8mYWqg+1l7 X0W6B6GHMcITGdwxVDNGHHv0WabXCqFPT0ENwW1cnl9UL6I91Ev2NjmG9HP6hVZa g3+NyXJwiOP38xsxpPJGPoYFw2wZyv8/e41MMnsE6goYjMmB04sHvXCUQkbN41Fn 3CMdsiueYZDAKflvAlL50Jy7Imz5tq9oy81/z+amqvWo4T0U8zRwQuf25nBAhr25 1WdT4CbCNGO2Qwyu9X+t/KGNVIQhCctkx/yz71l3p2piEGkw/XE4VJNrkmWb0zN7 k9F5uGOZlAlQEzx+5PN//Qtz1Db0QQ== =E6vv -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "Improvements to ext4's block allocator performance for very large file systems, especially when the file system or files which are highly fragmented. There is a new mount option, prefetch_block_bitmaps which will pull in the block bitmaps and set up the in-memory buddy bitmaps when the file system is initially mounted. Beyond that, a lot of bug fixes and cleanups. In particular, a number of changes to make ext4 more robust in the face of write errors or file system corruptions" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (46 commits) ext4: limit the length of per-inode prealloc list ext4: reorganize if statement of ext4_mb_release_context() ext4: add mb_debug logging when there are lost chunks ext4: Fix comment typo "the the". jbd2: clean up checksum verification in do_one_pass() ext4: change to use fallthrough macro ext4: remove unused parameter of ext4_generic_delete_entry function mballoc: replace seq_printf with seq_puts ext4: optimize the implementation of ext4_mb_good_group() ext4: delete invalid comments near ext4_mb_check_limits() ext4: fix typos in ext4_mb_regular_allocator() comment ext4: fix checking of directory entry validity for inline directories fs: prevent BUG_ON in submit_bh_wbc() ext4: correctly restore system zone info when remount fails ext4: handle add_system_zone() failure in ext4_setup_system_zone() ext4: fold ext4_data_block_valid_rcu() into the caller ext4: check journal inode extents more carefully ext4: don't allow overlapping system zones ext4: handle error of ext4_setup_system_zone() on remount ext4: delete the invalid BUGON in ext4_mb_load_buddy_gfp() ... |
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Ard Biesheuvel
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fb1201aece |
Documentation: efi: remove description of efi=old_map
The old EFI runtime region mapping logic that was kept around for some time has finally been removed entirely, along with the SGI UV1 support code that was its last remaining user. So remove any mention of the efi=old_map command line parameter from the docs. Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
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brookxu
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27bc446e2d |
ext4: limit the length of per-inode prealloc list
In the scenario of writing sparse files, the per-inode prealloc list may be very long, resulting in high overhead for ext4_mb_use_preallocated(). To circumvent this problem, we limit the maximum length of per-inode prealloc list to 512 and allow users to modify it. After patching, we observed that the sys ratio of cpu has dropped, and the system throughput has increased significantly. We created a process to write the sparse file, and the running time of the process on the fixed kernel was significantly reduced, as follows: Running time on unfixed kernel： [root@TENCENT64 ~]# time taskset 0x01 ./sparse /data1/sparce.dat real 0m2.051s user 0m0.008s sys 0m2.026s Running time on fixed kernel： [root@TENCENT64 ~]# time taskset 0x01 ./sparse /data1/sparce.dat real 0m0.471s user 0m0.004s sys 0m0.395s Signed-off-by: Chunguang Xu <brookxu@tencent.com> Link: https://lore.kernel.org/r/d7a98178-056b-6db5-6bce-4ead23f4a257@gmail.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Linus Torvalds
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50f6c7dbd9 |
Misc fixes and small updates all around the place:
- Fix mitigation state sysfs output
- Fix an FPU xstate/sxave code assumption bug triggered by Architectural LBR support
- Fix Lightning Mountain SoC TSC frequency enumeration bug
- Fix kexec debug output
- Fix kexec memory range assumption bug
- Fix a boundary condition in the crash kernel code
- Optimize porgatory.ro generation a bit
- Enable ACRN guests to use X2APIC mode
- Reduce a __text_poke() IRQs-off critical section for the benefit of PREEMPT_RT
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes and small updates all around the place:
- Fix mitigation state sysfs output
- Fix an FPU xstate/sxave code assumption bug triggered by
Architectural LBR support
- Fix Lightning Mountain SoC TSC frequency enumeration bug
- Fix kexec debug output
- Fix kexec memory range assumption bug
- Fix a boundary condition in the crash kernel code
- Optimize porgatory.ro generation a bit
- Enable ACRN guests to use X2APIC mode
- Reduce a __text_poke() IRQs-off critical section for the benefit of
PREEMPT_RT"
* tag 'x86-urgent-2020-08-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternatives: Acquire pte lock with interrupts enabled
x86/bugs/multihit: Fix mitigation reporting when VMX is not in use
x86/fpu/xstate: Fix an xstate size check warning with architectural LBRs
x86/purgatory: Don't generate debug info for purgatory.ro
x86/tsr: Fix tsc frequency enumeration bug on Lightning Mountain SoC
kexec_file: Correctly output debugging information for the PT_LOAD ELF header
kexec: Improve & fix crash_exclude_mem_range() to handle overlapping ranges
x86/crash: Correct the address boundary of function parameters
x86/acrn: Remove redundant chars from ACRN signature
x86/acrn: Allow ACRN guest to use X2APIC mode
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Linus Torvalds
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1a5d9dbbaf |
One more power management update for 5.9-rc1
Modify the intel_pstate driver to allow it to work in the passive mode with hardware-managed P-states (HWP) enabled. -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl82z44SHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxYZYP/0fkFE/WJyWeak8oQy7xW7noOgMztBxj SI+GVVoVwdB4+PBa1YMBRMYgpjTIxmzHmubhHJKEvOEzZoaJQ6myBwFaASfkF3MF ptAG+3pbXw9DSexCxo8Uj2VH1OaNUwoLg8hqqJfeaL3V1/5Fs+r/v4HmqS2Lb+CR qToLVIYOk6OkwZ0nRzxu0RpF51AAKrRwTkEWy376/K1Buqj/139/uP4zkLArO7XT 5CSpCdowibvYsU4TIg2ff29PzTpMXKqjB8EiBc1/dwg/0dAmhVqDknGt4TkNTult L9GtlMNwXt17VeQL9Yg3N4wY2WWP+V9lKk/87p2hd0zuIMRBbi4k+CD/bGGlmZby CT26zOpw6MIh2nTS1GB+YDQegRUdzfBIA6kAN4RVLMrGNpxBk7lYsv81YeUJCGdg CM5wFYx96TmsCQqN88bXkZhhVZJiaa53WUhRwyzcUcY3QWq5+R92i3yLL+7t2lLD LoG6S1y+MEEprNl/SNqtvHdz17h1JGZ6PGL26dV4gLh8cJqh92ficZ3l4yZXSV2S 3aa3REMpRJlBHsLhp4ihV9yIpafCyLlVBoX85N2Ip6JCHaXEnH5yjDB+R7Ir0CSk F7wXbCtoTxtRIB3ZBF+/J2VlBCyKDSn56JNsLZxJsV+dE48MxjFKc+Jzy5y7e2ny KlW8X/iy33Ts =U2D3 -----END PGP SIGNATURE----- Merge tag 'pm-5.9-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull one more power management update from Rafael Wysocki: "Modify the intel_pstate driver to allow it to work in the passive mode with hardware-managed P-states (HWP) enabled" * tag 'pm-5.9-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: intel_pstate: Implement passive mode with HWP enabled |
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Rafael J. Wysocki
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f3db6de55e |
Merge branch 'pm-cpufreq'
* pm-cpufreq: cpufreq: intel_pstate: Implement passive mode with HWP enabled |
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Linus Torvalds
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dddcbc139e |
A handful of obvious fixes that wandered in during the merge window.
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Merge tag 'docs-5.9-2' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of obvious fixes that wandered in during the merge window"
* tag 'docs-5.9-2' of git://git.lwn.net/linux:
Documentation/locking/locktypes: fix the typo
doc/zh_CN: resolve undefined label warning in admin-guide index
doc/zh_CN: fix title heading markup in admin-guide cpu-load
docs: remove the 2.6 "Upgrading I2C Drivers" guide
docs: Correct the release date of 5.2 stable
mailmap: Update comments for with format and more detalis
docs: cdrom: Fix a typo and rst markup
Doc: admin-guide: use correct legends in kernel-parameters.txt
Documentation/features: refresh RISC-V arch support files
documentation: coccinelle: Improve command example for make C={1,2}
Core-api: Documentation: Replace deprecated :c:func: Usage
Dev-tools: Documentation: Replace deprecated :c:func: Usage
Filesystems: Documentation: Replace deprecated :c:func: Usage
docs: trace: fix a typo
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Lepton Wu
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f38c85f1ba |
coredump: add %f for executable filename
The document reads "%e" should be "executable filename" while actually it could be changed by things like pr_ctl PR_SET_NAME. People who uses "%e" in core_pattern get surprised when they find out they get thread name instead of executable filename. This is either a bug of document or a bug of code. Since the behavior of "%e" is there for long time, it could bring another surprise for users if we "fix" the code. So we just "fix" the document. And more, for users who really need the "executable filename" in core_pattern, we introduce a new "%f" for the real executable filename. We already have "%E" for executable path in kernel, so just reuse most of its code for the new added "%f" format. Signed-off-by: Lepton Wu <ytht.net@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200701031432.2978761-1-ytht.net@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Nitin Gupta
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facdaa917c |
mm: proactive compaction
For some applications, we need to allocate almost all memory as hugepages.
However, on a running system, higher-order allocations can fail if the
memory is fragmented. Linux kernel currently does on-demand compaction as
we request more hugepages, but this style of compaction incurs very high
latency. Experiments with one-time full memory compaction (followed by
hugepage allocations) show that kernel is able to restore a highly
fragmented memory state to a fairly compacted memory state within <1 sec
for a 32G system. Such data suggests that a more proactive compaction can
help us allocate a large fraction of memory as hugepages keeping
allocation latencies low.
For a more proactive compaction, the approach taken here is to define a
new sysctl called 'vm.compaction_proactiveness' which dictates bounds for
external fragmentation which kcompactd tries to maintain.
The tunable takes a value in range [0, 100], with a default of 20.
Note that a previous version of this patch [1] was found to introduce too
many tunables (per-order extfrag{low, high}), but this one reduces them to
just one sysctl. Also, the new tunable is an opaque value instead of
asking for specific bounds of "external fragmentation", which would have
been difficult to estimate. The internal interpretation of this opaque
value allows for future fine-tuning.
Currently, we use a simple translation from this tunable to [low, high]
"fragmentation score" thresholds (low=100-proactiveness, high=low+10%).
The score for a node is defined as weighted mean of per-zone external
fragmentation. A zone's present_pages determines its weight.
To periodically check per-node score, we reuse per-node kcompactd threads,
which are woken up every 500 milliseconds to check the same. If a node's
score exceeds its high threshold (as derived from user-provided
proactiveness value), proactive compaction is started until its score
reaches its low threshold value. By default, proactiveness is set to 20,
which implies threshold values of low=80 and high=90.
This patch is largely based on ideas from Michal Hocko [2]. See also the
LWN article [3].
Performance data
================
System: x64_64, 1T RAM, 80 CPU threads.
Kernel: 5.6.0-rc3 + this patch
echo madvise | sudo tee /sys/kernel/mm/transparent_hugepage/enabled
echo madvise | sudo tee /sys/kernel/mm/transparent_hugepage/defrag
Before starting the driver, the system was fragmented from a userspace
program that allocates all memory and then for each 2M aligned section,
frees 3/4 of base pages using munmap. The workload is mainly anonymous
userspace pages, which are easy to move around. I intentionally avoided
unmovable pages in this test to see how much latency we incur when
hugepage allocations hit direct compaction.
1. Kernel hugepage allocation latencies
With the system in such a fragmented state, a kernel driver then allocates
as many hugepages as possible and measures allocation latency:
(all latency values are in microseconds)
- With vanilla 5.6.0-rc3
percentile latency
–––––––––– –––––––
5 7894
10 9496
25 12561
30 15295
40 18244
50 21229
60 27556
75 30147
80 31047
90 32859
95 33799
Total 2M hugepages allocated = 383859 (749G worth of hugepages out of 762G
total free => 98% of free memory could be allocated as hugepages)
- With 5.6.0-rc3 + this patch, with proactiveness=20
sysctl -w vm.compaction_proactiveness=20
percentile latency
–––––––––– –––––––
5 2
10 2
25 3
30 3
40 3
50 4
60 4
75 4
80 4
90 5
95 429
Total 2M hugepages allocated = 384105 (750G worth of hugepages out of 762G
total free => 98% of free memory could be allocated as hugepages)
2. JAVA heap allocation
In this test, we first fragment memory using the same method as for (1).
Then, we start a Java process with a heap size set to 700G and request the
heap to be allocated with THP hugepages. We also set THP to madvise to
allow hugepage backing of this heap.
/usr/bin/time
java -Xms700G -Xmx700G -XX:+UseTransparentHugePages -XX:+AlwaysPreTouch
The above command allocates 700G of Java heap using hugepages.
- With vanilla 5.6.0-rc3
17.39user 1666.48system 27:37.89elapsed
- With 5.6.0-rc3 + this patch, with proactiveness=20
8.35user 194.58system 3:19.62elapsed
Elapsed time remains around 3:15, as proactiveness is further increased.
Note that proactive compaction happens throughout the runtime of these
workloads. The situation of one-time compaction, sufficient to supply
hugepages for following allocation stream, can probably happen for more
extreme proactiveness values, like 80 or 90.
In the above Java workload, proactiveness is set to 20. The test starts
with a node's score of 80 or higher, depending on the delay between the
fragmentation step and starting the benchmark, which gives more-or-less
time for the initial round of compaction. As t he benchmark consumes
hugepages, node's score quickly rises above the high threshold (90) and
proactive compaction starts again, which brings down the score to the low
threshold level (80). Repeat.
bpftrace also confirms proactive compaction running 20+ times during the
runtime of this Java benchmark. kcompactd threads consume 100% of one of
the CPUs while it tries to bring a node's score within thresholds.
Backoff behavior
================
Above workloads produce a memory state which is easy to compact. However,
if memory is filled with unmovable pages, proactive compaction should
essentially back off. To test this aspect:
- Created a kernel driver that allocates almost all memory as hugepages
followed by freeing first 3/4 of each hugepage.
- Set proactiveness=40
- Note that proactive_compact_node() is deferred maximum number of times
with HPAGE_FRAG_CHECK_INTERVAL_MSEC of wait between each check
(=> ~30 seconds between retries).
[1] https://patchwork.kernel.org/patch/11098289/
[2] https://lore.kernel.org/linux-mm/20161230131412.GI13301@dhcp22.suse.cz/
[3] https://lwn.net/Articles/817905/
Signed-off-by: Nitin Gupta <nigupta@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Oleksandr Natalenko <oleksandr@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Reviewed-by: Oleksandr Natalenko <oleksandr@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Nitin Gupta <ngupta@nitingupta.dev>
Cc: Oleksandr Natalenko <oleksandr@redhat.com>
Link: http://lkml.kernel.org/r/20200616204527.19185-1-nigupta@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Roman Gushchin
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772616b031 |
mm: memcg/percpu: per-memcg percpu memory statistics
Percpu memory can represent a noticeable chunk of the total memory consumption, especially on big machines with many CPUs. Let's track percpu memory usage for each memcg and display it in memory.stat. A percpu allocation is usually scattered over multiple pages (and nodes), and can be significantly smaller than a page. So let's add a byte-sized counter on the memcg level: MEMCG_PERCPU_B. Byte-sized vmstat infra created for slabs can be perfectly reused for percpu case. [guro@fb.com: v3] Link: http://lkml.kernel.org/r/20200623184515.4132564-4-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Dennis Zhou <dennis@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Tobin C. Harding <tobin@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Waiman Long <longman@redhat.com> Cc: Bixuan Cui <cuibixuan@huawei.com> Cc: Michal Koutný <mkoutny@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: http://lkml.kernel.org/r/20200608230819.832349-4-guro@fb.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Randy Dunlap
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be3a5b0e8b |
Doc: admin-guide: use correct legends in kernel-parameters.txt
Documentation/admin-guide/kernel-parameters.rst includes a legend telling us what configurations or hardware platforms are relevant for certain boot options. For X86, it is spelled "X86" and for x86_64, it is spelled "X86-64", so make corrections for those. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Link: https://lore.kernel.org/r/20200810024941.30231-1-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Rafael J. Wysocki
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f6ebbcf08f |
cpufreq: intel_pstate: Implement passive mode with HWP enabled
Allow intel_pstate to work in the passive mode with HWP enabled and make it set the HWP minimum performance limit (HWP floor) to the P-state value given by the target frequency supplied by the cpufreq governor, so as to prevent the HWP algorithm and the CPU scheduler from working against each other, at least when the schedutil governor is in use, and update the intel_pstate documentation accordingly. Among other things, this allows utilization clamps to be taken into account, at least to a certain extent, when intel_pstate is in use and makes it more likely that sufficient capacity for deadline tasks will be provided. After this change, the resulting behavior of an HWP system with intel_pstate in the passive mode should be close to the behavior of the analogous non-HWP system with intel_pstate in the passive mode, except that the HWP algorithm is generally allowed to make the CPU run at a frequency above the floor P-state set by intel_pstate in the entire available range of P-states, while without HWP a CPU can run in a P-state above the requested one if the latter falls into the range of turbo P-states (referred to as the turbo range) or if the P-states of all CPUs in one package are coordinated with each other at the hardware level. [Note that in principle the HWP floor may not be taken into account by the processor if it falls into the turbo range, in which case the processor has a license to choose any P-state, either below or above the HWP floor, just like a non-HWP processor in the case when the target P-state falls into the turbo range.] With this change applied, intel_pstate in the passive mode assumes complete control over the HWP request MSR and concurrent changes of that MSR (eg. via the direct MSR access interface) are overridden by it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Francisco Jerez <currojerez@riseup.net> |
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Linus Torvalds
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32663c78c1 |
Tracing updates for 5.9
- The biggest news in that the tracing ring buffer can now time events that
interrupted other ring buffer events. Before this change, if an interrupt
came in while recording another event, and that interrupt also had an
event, those events would all have the same time stamp as the event it
interrupted. Now, with the new design, those events will have a unique time
stamp and rightfully display the time for those events that were recorded
while interrupting another event.
- Bootconfig how has an "override" operator that lets the users have a
default config, but then add options to override the default.
- A fix was made to properly filter function graph tracing to the ftrace
PIDs. This came in at the end of the -rc cycle, and needs to be backported.
- Several clean ups, performance updates, and minor fixes as well.
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Merge tag 'trace-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- The biggest news in that the tracing ring buffer can now time events
that interrupted other ring buffer events.
Before this change, if an interrupt came in while recording another
event, and that interrupt also had an event, those events would all
have the same time stamp as the event it interrupted.
Now, with the new design, those events will have a unique time stamp
and rightfully display the time for those events that were recorded
while interrupting another event.
- Bootconfig how has an "override" operator that lets the users have a
default config, but then add options to override the default.
- A fix was made to properly filter function graph tracing to the
ftrace PIDs. This came in at the end of the -rc cycle, and needs to
be backported.
- Several clean ups, performance updates, and minor fixes as well.
* tag 'trace-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (39 commits)
tracing: Add trace_array_init_printk() to initialize instance trace_printk() buffers
kprobes: Fix compiler warning for !CONFIG_KPROBES_ON_FTRACE
tracing: Use trace_sched_process_free() instead of exit() for pid tracing
bootconfig: Fix to find the initargs correctly
Documentation: bootconfig: Add bootconfig override operator
tools/bootconfig: Add testcases for value override operator
lib/bootconfig: Add override operator support
kprobes: Remove show_registers() function prototype
tracing/uprobe: Remove dead code in trace_uprobe_register()
kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler
ftrace: Fix ftrace_trace_task return value
tracepoint: Use __used attribute definitions from compiler_attributes.h
tracepoint: Mark __tracepoint_string's __used
trace : Have tracing buffer info use kvzalloc instead of kzalloc
tracing: Remove outdated comment in stack handling
ftrace: Do not let direct or IPMODIFY ftrace_ops be added to module and set trampolines
ftrace: Setup correct FTRACE_FL_REGS flags for module
tracing/hwlat: Honor the tracing_cpumask
tracing/hwlat: Drop the duplicate assignment in start_kthread()
tracing: Save one trace_event->type by using __TRACE_LAST_TYPE
...
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Linus Torvalds
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2f12d44085 |
- DM multipath locking fixes around m->flags tests and improvements to
bio-based code so that it follows patterns established by request-based code. - Request-based DM core improvement to eliminate unnecessary call to blk_mq_queue_stopped(). - Add "panic_on_corruption" error handling mode to DM verity target. - DM bufio fix to to perform buffer cleanup from a workqueue rather than wait for IO in reclaim context from shrinker. - DM crypt improvement to optionally avoid async processing via workqueues for reads and/or writes -- via "no_read_workqueue" and "no_write_workqueue" features. This more direct IO processing improves latency and throughput with faster storage. Avoiding workqueue IO submission for writes (DM_CRYPT_NO_WRITE_WORKQUEUE) is a requirement for adding zoned block device support to DM crypt. - Add zoned block device support to DM crypt. Makes use of DM_CRYPT_NO_WRITE_WORKQUEUE and a new optional feature (DM_CRYPT_WRITE_INLINE) that allows write completion to wait for encryption to complete. This allows write ordering to be preserved, which is needed for zoned block devices. - Fix DM ebs target's check for REQ_OP_FLUSH. - Fix DM core's report zones support to not report more zones than were requested. - A few small compiler warning fixes. - DM dust improvements to return output directly to the user rather than require they scrape the system log for output. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEJfWUX4UqZ4x1O2wixSPxCi2dA1oFAl8tdOQTHHNuaXR6ZXJA cmVkaGF0LmNvbQAKCRDFI/EKLZ0DWvDlB/sF8svagDqeqs27xTxCiUPykD29cMmS OGPr0Mp/BntZOBpSaTPM9s5XucP3WJhPsxet5qeoyM3OViSFx+O55PqPjn8C65y0 eGMa4zknd9eO1933+ijmyQu6VNr4sf/6nusX4xSGqv00UR22dJ+3pHtfN9ANDXYX AAYA0Ve6UuOwAbGUCnRGI/2780aYY0B8Ok+cF21CskqryF+RpmbZ6BsR07+Hk4cy LX5EaHUqezW12cibLq2f0l7TLLJ86OscvqyU9lGVIxiV57e2i5c2S1HvhKZu+Wn3 6CUmlOhGI0viCKgM1ArekZ+zOw9ROIaAKKPzC5mspqx9yuuCqdY8k8xV =X3tt -----END PGP SIGNATURE----- Merge tag 'for-5.9/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - DM multipath locking fixes around m->flags tests and improvements to bio-based code so that it follows patterns established by request-based code. - Request-based DM core improvement to eliminate unnecessary call to blk_mq_queue_stopped(). - Add "panic_on_corruption" error handling mode to DM verity target. - DM bufio fix to to perform buffer cleanup from a workqueue rather than wait for IO in reclaim context from shrinker. - DM crypt improvement to optionally avoid async processing via workqueues for reads and/or writes -- via "no_read_workqueue" and "no_write_workqueue" features. This more direct IO processing improves latency and throughput with faster storage. Avoiding workqueue IO submission for writes (DM_CRYPT_NO_WRITE_WORKQUEUE) is a requirement for adding zoned block device support to DM crypt. - Add zoned block device support to DM crypt. Makes use of DM_CRYPT_NO_WRITE_WORKQUEUE and a new optional feature (DM_CRYPT_WRITE_INLINE) that allows write completion to wait for encryption to complete. This allows write ordering to be preserved, which is needed for zoned block devices. - Fix DM ebs target's check for REQ_OP_FLUSH. - Fix DM core's report zones support to not report more zones than were requested. - A few small compiler warning fixes. - DM dust improvements to return output directly to the user rather than require they scrape the system log for output. * tag 'for-5.9/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: don't call report zones for more than the user requested dm ebs: Fix incorrect checking for REQ_OP_FLUSH dm init: Set file local variable static dm ioctl: Fix compilation warning dm raid: Remove empty if statement dm verity: Fix compilation warning dm crypt: Enable zoned block device support dm crypt: add flags to optionally bypass kcryptd workqueues dm bufio: do buffer cleanup from a workqueue dm rq: don't call blk_mq_queue_stopped() in dm_stop_queue() dm dust: add interface to list all badblocks dm dust: report some message results directly back to user dm verity: add "panic_on_corruption" error handling mode dm mpath: use double checked locking in fast path dm mpath: rename current_pgpath to pgpath in multipath_prepare_ioctl dm mpath: rework __map_bio() dm mpath: factor out multipath_queue_bio dm mpath: push locking down to must_push_back_rq() dm mpath: take m->lock spinlock when testing QUEUE_IF_NO_PATH dm mpath: changes from initial m->flags locking audit |
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Linus Torvalds
|
fa73e21231 |
media updates for v5.9-rc1
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Linus Torvalds
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81e11336d9 |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
- a few MM hotfixes
- kthread, tools, scripts, ntfs and ocfs2
- some of MM
Subsystems affected by this patch series: kthread, tools, scripts, ntfs,
ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan,
debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore,
sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan).
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (162 commits)
mm: vmscan: consistent update to pgrefill
mm/vmscan.c: fix typo
khugepaged: khugepaged_test_exit() check mmget_still_valid()
khugepaged: retract_page_tables() remember to test exit
khugepaged: collapse_pte_mapped_thp() protect the pmd lock
khugepaged: collapse_pte_mapped_thp() flush the right range
mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
mm: thp: replace HTTP links with HTTPS ones
mm/page_alloc: fix memalloc_nocma_{save/restore} APIs
mm/page_alloc.c: skip setting nodemask when we are in interrupt
mm/page_alloc: fallbacks at most has 3 elements
mm/page_alloc: silence a KASAN false positive
mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask()
mm/page_alloc.c: simplify pageblock bitmap access
mm/page_alloc.c: extract the common part in pfn_to_bitidx()
mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits
mm/shuffle: remove dynamic reconfiguration
mm/memory_hotplug: document why shuffle_zone() is relevant
mm/page_alloc: remove nr_free_pagecache_pages()
mm: remove vm_total_pages
...
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Vlastimil Babka
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e17f1dfba3 |
mm, slub: extend slub_debug syntax for multiple blocks
Patch series "slub_debug fixes and improvements". The slub_debug kernel boot parameter can either apply a single set of options to all caches or a list of caches. There is a use case where debugging is applied for all caches and then disabled at runtime for specific caches, for performance and memory consumption reasons [1]. As runtime changes are dangerous, extend the boot parameter syntax so that multiple blocks of either global or slab-specific options can be specified, with blocks delimited by ';'. This will also support the use case of [1] without runtime changes. For details see the updated Documentation/vm/slub.rst [1] https://lore.kernel.org/r/1383cd32-1ddc-4dac-b5f8-9c42282fa81c@codeaurora.org [weiyongjun1@huawei.com: make parse_slub_debug_flags() static] Link: http://lkml.kernel.org/r/20200702150522.4940-1-weiyongjun1@huawei.com Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Jann Horn <jannh@google.com> Cc: Roman Gushchin <guro@fb.com> Cc: Vijayanand Jitta <vjitta@codeaurora.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Link: http://lkml.kernel.org/r/20200610163135.17364-2-vbabka@suse.cz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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25d8d4eeca |
powerpc updates for 5.9
- Add support for (optionally) using queued spinlocks & rwlocks.
- Support for a new faster system call ABI using the scv instruction on Power9
or later.
- Drop support for the PROT_SAO mmap/mprotect flag as it will be unsupported on
Power10 and future processors, leaving us with no way to implement the
functionality it requests. This risks breaking userspace, though we believe
it is unused in practice.
- A bug fix for, and then the removal of, our custom stack expansion checking.
We now allow stack expansion up to the rlimit, like other architectures.
- Remove the remnants of our (previously disabled) topology update code, which
tried to react to NUMA layout changes on virtualised systems, but was prone
to crashes and other problems.
- Add PMU support for Power10 CPUs.
- A change to our signal trampoline so that we don't unbalance the link stack
(branch return predictor) in the signal delivery path.
- Lots of other cleanups, refactorings, smaller features and so on as usual.
Thanks to:
Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey Kardashevskiy,
Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton
Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan S, Bharata B Rao, Bill
Wendling, Bin Meng, Cédric Le Goater, Chris Packham, Christophe Leroy,
Christoph Hellwig, Daniel Axtens, Dan Williams, David Lamparter, Desnes A.
Nunes do Rosario, Erhard F., Finn Thain, Frederic Barrat, Ganesh Goudar,
Gautham R. Shenoy, Geoff Levand, Greg Kurz, Gustavo A. R. Silva, Hari Bathini,
Harish, Imre Kaloz, Joel Stanley, Joe Perches, John Crispin, Jordan Niethe,
Kajol Jain, Kamalesh Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li
RongQing, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal
Suchanek, Milton Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan
Chancellor, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver
O'Halloran, Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe
Bergheaud, Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy
Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh
Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar Dronamraju,
Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thiago Jung
Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov, Wei Yongjun, Wen Xiong,
YueHaibing.
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Merge tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add support for (optionally) using queued spinlocks & rwlocks.
- Support for a new faster system call ABI using the scv instruction on
Power9 or later.
- Drop support for the PROT_SAO mmap/mprotect flag as it will be
unsupported on Power10 and future processors, leaving us with no way
to implement the functionality it requests. This risks breaking
userspace, though we believe it is unused in practice.
- A bug fix for, and then the removal of, our custom stack expansion
checking. We now allow stack expansion up to the rlimit, like other
architectures.
- Remove the remnants of our (previously disabled) topology update
code, which tried to react to NUMA layout changes on virtualised
systems, but was prone to crashes and other problems.
- Add PMU support for Power10 CPUs.
- A change to our signal trampoline so that we don't unbalance the link
stack (branch return predictor) in the signal delivery path.
- Lots of other cleanups, refactorings, smaller features and so on as
usual.
Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey
Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju
T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan
S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris
Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan
Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn
Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand,
Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel
Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh
Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan
Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton
Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan
Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran,
Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud,
Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy
Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh
Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar
Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza
Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov,
Wei Yongjun, Wen Xiong, YueHaibing.
* tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits)
selftests/powerpc: Fix pkey syscall redefinitions
powerpc: Fix circular dependency between percpu.h and mmu.h
powerpc/powernv/sriov: Fix use of uninitialised variable
selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs
powerpc/40x: Fix assembler warning about r0
powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric
powerpc/papr_scm: Fetch nvdimm performance stats from PHYP
cpuidle: pseries: Fixup exit latency for CEDE(0)
cpuidle: pseries: Add function to parse extended CEDE records
cpuidle: pseries: Set the latency-hint before entering CEDE
selftests/powerpc: Fix online CPU selection
powerpc/perf: Consolidate perf_callchain_user_[64|32]()
powerpc/pseries/hotplug-cpu: Remove double free in error path
powerpc/pseries/mobility: Add pr_debug() for device tree changes
powerpc/pseries/mobility: Set pr_fmt()
powerpc/cacheinfo: Warn if cache object chain becomes unordered
powerpc/cacheinfo: Improve diagnostics about malformed cache lists
powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages
powerpc/cacheinfo: Set pr_fmt()
powerpc: fix function annotations to avoid section mismatch warnings with gcc-10
...
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Pawan Gupta
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f29dfa53cc |
x86/bugs/multihit: Fix mitigation reporting when VMX is not in use
On systems that have virtualization disabled or unsupported, sysfs
mitigation for X86_BUG_ITLB_MULTIHIT is reported incorrectly as:
$ cat /sys/devices/system/cpu/vulnerabilities/itlb_multihit
KVM: Vulnerable
System is not vulnerable to DoS attack from a rogue guest when
virtualization is disabled or unsupported in the hardware. Change the
mitigation reporting for these cases.
Fixes:
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Linus Torvalds
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c0c419c045 |
Staging/IIO driver patches for 5.9-rc1
Here is the large set of Staging and IIO driver patches for 5.9-rc1. Lots of churn here, but overall the size increase in lines added is small, while adding a load of new IIO drivers. Major things in here: - lots and lots of IIO new drivers and frameworks added - IIO driver fixes and updates - lots of tiny coding style cleanups for staging drivers - vc04_services major reworks and cleanups We had 3 set of drivers move out of staging in this round as well: - wilc1000 wireless driver moved out of staging - speakup moved out of staging - most USB driver moved out of staging Full details are in the shortlog. All of these have been in linux-next with no reported issues. The last few changes here were to resolve reported linux-next issues, and they seem to have resolved the problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXyv2rA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yngIgCfZOVj022X+paV81NwvO/TroMDA7oAn1C4XCmY Fxz55oHIyk9lbQxsDhID =ujqG -----END PGP SIGNATURE----- Merge tag 'staging-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO driver updates from Greg KH: "Here is the large set of Staging and IIO driver patches for 5.9-rc1. Lots of churn here, but overall the size increase in lines added is small, while adding a load of new IIO drivers. Major things in here: - lots and lots of IIO new drivers and frameworks added - IIO driver fixes and updates - lots of tiny coding style cleanups for staging drivers - vc04_services major reworks and cleanups We had 3 set of drivers move out of staging in this round as well: - wilc1000 wireless driver moved out of staging - speakup moved out of staging - most USB driver moved out of staging Full details are in the shortlog. All of these have been in linux-next with no reported issues. The last few changes here were to resolve reported linux-next issues, and they seem to have resolved the problems" * tag 'staging-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (428 commits) staging: most: fix up movement of USB driver staging: rts5208: clear alignment style issues staging: r8188eu: replace rtw_netdev_priv define with inline function staging: netlogic: clear alignment style issues staging: android: ashmem: Fix lockdep warning for write operation drivers: most: add USB adapter driver staging: most: Use %pM format specifier for MAC addresses staging: ks7010: Use %pM format specifier for MAC addresses staging: qlge: qlge_dbg: removed comment repition staging: wfx: Use flex_array_size() helper in memcpy() staging: rtl8723bs: Align macro definitions staging: rtl8723bs: Clean up function declations staging: rtl8723bs: Fix coding style errors drivers: staging: audio: Fix the missing header file for helper file staging: greybus: audio: Enable GB codec, audio module compilation. staging: greybus: audio: Add helper APIs for dynamic audio modules staging: greybus: audio: Resolve compilation error in topology parser staging: greybus: audio: Resolve compilation errors for GB codec module staging: greybus: audio: Maintain jack list within GB Audio module staging: greybus: audio: Update snd_jack FW usage as per new APIs ... |
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Linus Torvalds
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921d2597ab |
s390: implement diag318
x86: * Report last CPU for debugging * Emulate smaller MAXPHYADDR in the guest than in the host * .noinstr and tracing fixes from Thomas * nested SVM page table switching optimization and fixes Generic: * Unify shadow MMU cache data structures across architectures -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAl8pC+oUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroNcOwgAjomqtEqQNlp7DdZT7VyyklzbxX1/ ud7v+oOJ8K4sFlf64lSthjPo3N9rzZCcw+yOXmuyuITngXOGc3tzIwXpCzpLtuQ1 WO1Ql3B/2dCi3lP5OMmsO1UAZqy9pKLg1dfeYUPk48P5+p7d/NPmk+Em5kIYzKm5 JsaHfCp2EEXomwmljNJ8PQ1vTjIQSSzlgYUBZxmCkaaX7zbEUMtxAQCStHmt8B84 33LczwXBm3viSWrzsoBV37I70+tseugiSGsCfUyupXOvq55d6D9FCqtCb45Hn4Vh Ik8ggKdalsk/reiGEwNw1/3nr6mRMkHSbl+Mhc4waOIFf9dn0urgQgOaDg== =YVx0 -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM updates from Paolo Bonzini: "s390: - implement diag318 x86: - Report last CPU for debugging - Emulate smaller MAXPHYADDR in the guest than in the host - .noinstr and tracing fixes from Thomas - nested SVM page table switching optimization and fixes Generic: - Unify shadow MMU cache data structures across architectures" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits) KVM: SVM: Fix sev_pin_memory() error handling KVM: LAPIC: Set the TDCR settable bits KVM: x86: Specify max TDP level via kvm_configure_mmu() KVM: x86/mmu: Rename max_page_level to max_huge_page_level KVM: x86: Dynamically calculate TDP level from max level and MAXPHYADDR KVM: VXM: Remove temporary WARN on expected vs. actual EPTP level mismatch KVM: x86: Pull the PGD's level from the MMU instead of recalculating it KVM: VMX: Make vmx_load_mmu_pgd() static KVM: x86/mmu: Add separate helper for shadow NPT root page role calc KVM: VMX: Drop a duplicate declaration of construct_eptp() KVM: nSVM: Correctly set the shadow NPT root level in its MMU role KVM: Using macros instead of magic values MIPS: KVM: Fix build error caused by 'kvm_run' cleanup KVM: nSVM: remove nonsensical EXITINFO1 adjustment on nested NPF KVM: x86: Add a capability for GUEST_MAXPHYADDR < HOST_MAXPHYADDR support KVM: VMX: optimize #PF injection when MAXPHYADDR does not match KVM: VMX: Add guest physical address check in EPT violation and misconfig KVM: VMX: introduce vmx_need_pf_intercept KVM: x86: update exception bitmap on CPUID changes KVM: x86: rename update_bp_intercept to update_exception_bitmap ... |
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Eric Biggers
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cb29a02d3a |
ext4: use generic names for generic ioctls
Don't define EXT4_IOC_* aliases to ioctls that already have a generic FS_IOC_* name. These aliases are unnecessary, and they make it unclear which ioctls are ext4-specific and which are generic. Exception: leave EXT4_IOC_GETVERSION_OLD and EXT4_IOC_SETVERSION_OLD as-is for now, since renaming them to FS_IOC_GETVERSION and FS_IOC_SETVERSION would probably make them more likely to be confused with EXT4_IOC_GETVERSION and EXT4_IOC_SETVERSION which also exist. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20200714230909.56349-1-ebiggers@kernel.org Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Linus Torvalds
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ecfd7940b8 |
USB/Thunderbolt patches for 5.9-rc1
Here is the large set of USB and Thunderbolt patches for 5.9-rc1. Nothing really magic/major in here, just lots of little changes and updates: - clean up language usages in USB core and some drivers - Thunderbolt driver updates and additions - USB Gadget driver updates - dwc3 driver updates (like always...) - build with "W=1" warning fixups - mtu3 driver updates - usb-serial driver updates and device ids - typec additions and updates for new hardware - xhci debug code updates for future platforms - cdns3 driver updates - lots of other minor driver updates and fixes and cleanups All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXymciA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylVVwCfU7JxgjFhAJTzC9K5efVqsrSHzxQAnijHrqUn pHgI9M1ZRVGwmv2RNWb3 =9/8I -----END PGP SIGNATURE----- Merge tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt updates from Greg KH: "Here is the large set of USB and Thunderbolt patches for 5.9-rc1. Nothing really magic/major in here, just lots of little changes and updates: - clean up language usages in USB core and some drivers - Thunderbolt driver updates and additions - USB Gadget driver updates - dwc3 driver updates (like always...) - build with "W=1" warning fixups - mtu3 driver updates - usb-serial driver updates and device ids - typec additions and updates for new hardware - xhci debug code updates for future platforms - cdns3 driver updates - lots of other minor driver updates and fixes and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (330 commits) usb: common: usb-conn-gpio: Register charger usb: mtu3: simplify mtu3_req_complete() usb: mtu3: clear dual mode of u3port when disable device usb: mtu3: use MTU3_EP_WEDGE flag usb: mtu3: remove useless member @busy in mtu3_ep struct usb: mtu3: remove repeated error log usb: mtu3: add ->udc_set_speed() usb: mtu3: introduce a funtion to check maximum speed usb: mtu3: clear interrupts status when disable interrupts usb: mtu3: reinitialize CSR registers usb: mtu3: fix macro for maximum number of packets usb: mtu3: remove unnecessary pointer checks usb: xhci: Fix ASMedia ASM1142 DMA addressing usb: xhci: define IDs for various ASMedia host controllers usb: musb: convert to devm_platform_ioremap_resource_byname usb: gadget: tegra-xudc: convert to devm_platform_ioremap_resource_byname usb: gadget: r8a66597: convert to devm_platform_ioremap_resource_byname usb: dwc3: convert to devm_platform_ioremap_resource_byname usb: cdns3: convert to devm_platform_ioremap_resource_byname usb: phy: am335x: convert to devm_platform_ioremap_resource_byname ... |
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Linus Torvalds
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dd27111e32 |
Driver core changes for 5.9-rc1
Here is the "big" set of changes to the driver core, and some drivers
using the changes, for 5.9-rc1.
"Biggest" thing in here is the device link exposure in sysfs, to help
to tame the madness that is SoC device tree representations and driver
interactions with it.
Other stuff in here that is interesting is:
- device probe log helper so that drivers can report problems in
a unified way easier.
- devres functions added
- DEVICE_ATTR_ADMIN_* macro added to make it harder to write
incorrect sysfs file permissions
- documentation cleanups
- ability for debugfs to be present in the kernel, yet not
exposed to userspace. Needed for systems that want it
enabled, but do not trust users, so they can still use some
kernel functions that were otherwise disabled.
- other minor fixes and cleanups
The patches outside of drivers/base/ all have acks from the respective
subsystem maintainers to go through this tree instead of theirs.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of changes to the driver core, and some drivers
using the changes, for 5.9-rc1.
"Biggest" thing in here is the device link exposure in sysfs, to help
to tame the madness that is SoC device tree representations and driver
interactions with it.
Other stuff in here that is interesting is:
- device probe log helper so that drivers can report problems in a
unified way easier.
- devres functions added
- DEVICE_ATTR_ADMIN_* macro added to make it harder to write
incorrect sysfs file permissions
- documentation cleanups
- ability for debugfs to be present in the kernel, yet not exposed to
userspace. Needed for systems that want it enabled, but do not
trust users, so they can still use some kernel functions that were
otherwise disabled.
- other minor fixes and cleanups
The patches outside of drivers/base/ all have acks from the respective
subsystem maintainers to go through this tree instead of theirs.
All of these have been in linux-next with no reported issues"
* tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (39 commits)
drm/bridge: lvds-codec: simplify error handling
drm/bridge/sii8620: fix resource acquisition error handling
driver core: add deferring probe reason to devices_deferred property
driver core: add device probe log helper
driver core: Avoid binding drivers to dead devices
Revert "test_firmware: Test platform fw loading on non-EFI systems"
firmware_loader: EFI firmware loader must handle pre-allocated buffer
selftest/firmware: Add selftest timeout in settings
test_firmware: Test platform fw loading on non-EFI systems
driver core: Change delimiter in devlink device's name to "--"
debugfs: Add access restriction option
tracefs: Remove unnecessary debug_fs checks.
driver core: Fix probe_count imbalance in really_probe()
kobject: remove unused KOBJ_MAX action
driver core: Fix sleeping in invalid context during device link deletion
driver core: Add waiting_for_supplier sysfs file for devices
driver core: Add state_synced sysfs file for devices that support it
driver core: Expose device link details in sysfs
driver core: Drop mention of obsolete bus rwsem from kernel-doc
debugfs: file: Remove unnecessary cast in kfree()
...
|
|
|
Linus Torvalds
|
1785d11612 |
Char/Misc driver patches for 5.9-rc1
Here is the large set of char and misc and other driver subsystem patches for 5.9-rc1. Lots of new driver submissions in here, and cleanups and features for existing drivers. Highlights are: - habanalabs driver updates - coresight driver updates - nvmem driver updates - huge number of "W=1" build warning cleanups from Lee Jones - dyndbg updates - virtbox driver fixes and updates - soundwire driver updates - mei driver updates - phy driver updates - fpga driver updates - lots of smaller individual misc/char driver cleanups and fixes Full details are in the shortlog. All of these have been in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXylccQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymofgCfZ1CxNWd0ZVM0YIn8cY9gO6ON7MsAnRq48hvn Vjf4rKM73GC11bVF4Gyy =Xq1R -----END PGP SIGNATURE----- Merge tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char and misc and other driver subsystem patches for 5.9-rc1. Lots of new driver submissions in here, and cleanups and features for existing drivers. Highlights are: - habanalabs driver updates - coresight driver updates - nvmem driver updates - huge number of "W=1" build warning cleanups from Lee Jones - dyndbg updates - virtbox driver fixes and updates - soundwire driver updates - mei driver updates - phy driver updates - fpga driver updates - lots of smaller individual misc/char driver cleanups and fixes Full details are in the shortlog. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (322 commits) habanalabs: remove unused but set variable 'ctx_asid' nvmem: qcom-spmi-sdam: Enable multiple devices dt-bindings: nvmem: SID: add binding for A100's SID controller nvmem: update Kconfig description nvmem: qfprom: Add fuse blowing support dt-bindings: nvmem: Add properties needed for blowing fuses dt-bindings: nvmem: qfprom: Convert to yaml nvmem: qfprom: use NVMEM_DEVID_AUTO for multiple instances nvmem: core: add support to auto devid nvmem: core: Add nvmem_cell_read_u8() nvmem: core: Grammar fixes for help text nvmem: sc27xx: add sc2730 efuse support nvmem: Enforce nvmem stride in the sysfs interface MAINTAINERS: Add git tree for NVMEM FRAMEWORK nvmem: sprd: Fix return value of sprd_efuse_probe() drivers: android: Fix the SPDX comment style drivers: android: Fix a variable declaration coding style issue drivers: android: Remove braces for a single statement if-else block drivers: android: Remove the use of else after return drivers: android: Fix a variable declaration coding style issue ... |
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Linus Torvalds
|
e0fc99e21e |
for-5.9/drivers-20200803
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Merge tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
- NVMe:
- ZNS support (Aravind, Keith, Matias, Niklas)
- Misc cleanups, optimizations, fixes (Baolin, Chaitanya, David,
Dongli, Max, Sagi)
- null_blk zone capacity support (Aravind)
- MD:
- raid5/6 fixes (ChangSyun)
- Warning fixes (Damien)
- raid5 stripe fixes (Guoqing, Song, Yufen)
- sysfs deadlock fix (Junxiao)
- raid10 deadlock fix (Vitaly)
- struct_size conversions (Gustavo)
- Set of bcache updates/fixes (Coly)
* tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block: (117 commits)
md/raid5: Allow degraded raid6 to do rmw
md/raid5: Fix Force reconstruct-write io stuck in degraded raid5
raid5: don't duplicate code for different paths in handle_stripe
raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show
md: print errno in super_written
md/raid5: remove the redundant setting of STRIPE_HANDLE
md: register new md sysfs file 'uuid' read-only
md: fix max sectors calculation for super 1.0
nvme-loop: remove extra variable in create ctrl
nvme-loop: set ctrl state connecting after init
nvme-multipath: do not fall back to __nvme_find_path() for non-optimized paths
nvme-multipath: fix logic for non-optimized paths
nvme-rdma: fix controller reset hang during traffic
nvme-tcp: fix controller reset hang during traffic
nvmet: introduce the passthru Kconfig option
nvmet: introduce the passthru configfs interface
nvmet: Add passthru enable/disable helpers
nvmet: add passthru code to process commands
nvme: export nvme_find_get_ns() and nvme_put_ns()
nvme: introduce nvme_ctrl_get_by_path()
...
|
|
|
Linus Torvalds
|
2324d50d05 |
It's been a busy cycle for documentation - hopefully the busiest for a
while to come. Changes include:
- Some new Chinese translations
- Progress on the battle against double words words and non-HTTPS URLs
- Some block-mq documentation
- More RST conversions from Mauro. At this point, that task is
essentially complete, so we shouldn't see this kind of churn again for a
while. Unless we decide to switch to asciidoc or something...:)
- Lots of typo fixes, warning fixes, and more.
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Merge tag 'docs-5.9' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It's been a busy cycle for documentation - hopefully the busiest for a
while to come. Changes include:
- Some new Chinese translations
- Progress on the battle against double words words and non-HTTPS
URLs
- Some block-mq documentation
- More RST conversions from Mauro. At this point, that task is
essentially complete, so we shouldn't see this kind of churn again
for a while. Unless we decide to switch to asciidoc or
something...:)
- Lots of typo fixes, warning fixes, and more"
* tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits)
scripts/kernel-doc: optionally treat warnings as errors
docs: ia64: correct typo
mailmap: add entry for <alobakin@marvell.com>
doc/zh_CN: add cpu-load Chinese version
Documentation/admin-guide: tainted-kernels: fix spelling mistake
MAINTAINERS: adjust kprobes.rst entry to new location
devices.txt: document rfkill allocation
PCI: correct flag name
docs: filesystems: vfs: correct flag name
docs: filesystems: vfs: correct sync_mode flag names
docs: path-lookup: markup fixes for emphasis
docs: path-lookup: more markup fixes
docs: path-lookup: fix HTML entity mojibake
CREDITS: Replace HTTP links with HTTPS ones
docs: process: Add an example for creating a fixes tag
doc/zh_CN: add Chinese translation prefer section
doc/zh_CN: add clearing-warn-once Chinese version
doc/zh_CN: add admin-guide index
doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label
futex: MAINTAINERS: Re-add selftests directory
...
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Linus Torvalds
|
4da9f33026 |
Support for FSGSBASE. Almost 5 years after the first RFC to support it,
this has been brought into a shape which is maintainable and actually works. This final version was done by Sasha Levin who took it up after Intel dropped the ball. Sasha discovered that the SGX (sic!) offerings out there ship rogue kernel modules enabling FSGSBASE behind the kernels back which opens an instantanious unpriviledged root hole. The FSGSBASE instructions provide a considerable speedup of the context switch path and enable user space to write GSBASE without kernel interaction. This enablement requires careful handling of the exception entries which go through the paranoid entry path as they cannot longer rely on the assumption that user GSBASE is positive (as enforced via prctl() on non FSGSBASE enabled systemn). All other entries (syscalls, interrupts and exceptions) can still just utilize SWAPGS unconditionally when the entry comes from user space. Converting these entries to use FSGSBASE has no benefit as SWAPGS is only marginally slower than WRGSBASE and locating and retrieving the kernel GSBASE value is not a free operation either. The real benefit of RD/WRGSBASE is the avoidance of the MSR reads and writes. The changes come with appropriate selftests and have held up in field testing against the (sanitized) Graphene-SGX driver. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl8pGnoTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoTYJD/9873GkwvGcc/Vq/dJH1szGTgFftPyZ c/Y9gzx7EGBPLo25BS820L+ZlynzXHDxExKfCEaD10TZfe5XIc1vYNR0J74M2NmK IBgEDstJeW93ai+rHCFRXIevhpzU4GgGYJ1MeeOgbVMN3aGU1g6HfzMvtF0fPn8Y n6fsLZa43wgnoTdjwjjikpDTrzoZbaL1mbODBzBVPAaTbim7IKKTge6r/iCKrOjz Uixvm3g9lVzx52zidJ9kWa8esmbOM1j0EPe7/hy3qH9DFo87KxEzjHNH3T6gY5t6 NJhRAIfY+YyTHpPCUCshj6IkRudE6w/qjEAmKP9kWZxoJrvPCTWOhCzelwsFS9b9 gxEYfsnaKhsfNhB6fi0PtWlMzPINmEA7SuPza33u5WtQUK7s1iNlgHfvMbjstbwg MSETn4SG2/ZyzUrSC06lVwV8kh0RgM3cENc/jpFfIHD0vKGI3qfka/1RY94kcOCG AeJd0YRSU2RqL7lmxhHyG8tdb8eexns41IzbPCLXX2sF00eKNkVvMRYT2mKfKLFF q8v1x7yuwmODdXfFR6NdCkGm9IU7wtL6wuQ8Nhu9UraFmcXo6X6FLJC18FqcvSb9 jvcRP4XY/8pNjjf44JB8yWfah0xGQsaMIKQGP4yLv4j6Xk1xAQKH1MqcC7l1D2HN 5Z24GibFqSK/vA== =QaAN -----END PGP SIGNATURE----- Merge tag 'x86-fsgsbase-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fsgsbase from Thomas Gleixner: "Support for FSGSBASE. Almost 5 years after the first RFC to support it, this has been brought into a shape which is maintainable and actually works. This final version was done by Sasha Levin who took it up after Intel dropped the ball. Sasha discovered that the SGX (sic!) offerings out there ship rogue kernel modules enabling FSGSBASE behind the kernels back which opens an instantanious unpriviledged root hole. The FSGSBASE instructions provide a considerable speedup of the context switch path and enable user space to write GSBASE without kernel interaction. This enablement requires careful handling of the exception entries which go through the paranoid entry path as they can no longer rely on the assumption that user GSBASE is positive (as enforced via prctl() on non FSGSBASE enabled systemn). All other entries (syscalls, interrupts and exceptions) can still just utilize SWAPGS unconditionally when the entry comes from user space. Converting these entries to use FSGSBASE has no benefit as SWAPGS is only marginally slower than WRGSBASE and locating and retrieving the kernel GSBASE value is not a free operation either. The real benefit of RD/WRGSBASE is the avoidance of the MSR reads and writes. The changes come with appropriate selftests and have held up in field testing against the (sanitized) Graphene-SGX driver" * tag 'x86-fsgsbase-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86/fsgsbase: Fix Xen PV support x86/ptrace: Fix 32-bit PTRACE_SETREGS vs fsbase and gsbase selftests/x86/fsgsbase: Add a missing memory constraint selftests/x86/fsgsbase: Fix a comment in the ptrace_write_gsbase test selftests/x86: Add a syscall_arg_fault_64 test for negative GSBASE selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE selftests/x86/fsgsbase: Test GS selector on ptracer-induced GS base write Documentation/x86/64: Add documentation for GS/FS addressing mode x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2 x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit x86/entry/64: Introduce the FIND_PERCPU_BASE macro x86/entry/64: Switch CR3 before SWAPGS in paranoid entry x86/speculation/swapgs: Check FSGSBASE in enabling SWAPGS mitigation x86/process/64: Use FSGSBASE instructions on thread copy and ptrace x86/process/64: Use FSBSBASE in switch_to() if available x86/process/64: Make save_fsgs_for_kvm() ready for FSGSBASE x86/fsgsbase/64: Enable FSGSBASE instructions in helper functions x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions x86/cpu: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE ... |
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Linus Torvalds
|
0408497800 |
Power management updates for 5.9-rc1
- Make the Energy Model cover non-CPU devices (Lukasz Luba).
- Add Ice Lake server idle states table to the intel_idle driver
and eliminate a redundant static variable from it (Chen Yu,
Rafael Wysocki).
- Eliminate all W=1 build warnings from cpufreq (Lee Jones).
- Add support for Sapphire Rapids and for Power Limit 4 to the
Intel RAPL power capping driver (Sumeet Pawnikar, Zhang Rui).
- Fix function name in kerneldoc comments in the idle_inject power
capping driver (Yangtao Li).
- Fix locking issues with cpufreq governors and drop a redundant
"weak" function definition from cpufreq (Viresh Kumar).
- Rearrange cpufreq to register non-modular governors at the
core_initcall level and allow the default cpufreq governor to
be specified in the kernel command line (Quentin Perret).
- Extend, fix and clean up the intel_pstate driver (Srinivas
Pandruvada, Rafael Wysocki):
* Add a new sysfs attribute for disabling/enabling CPU
energy-efficiency optimizations in the processor.
* Make the driver avoid enabling HWP if EPP is not supported.
* Allow the driver to handle numeric EPP values in the sysfs
interface and fix the setting of EPP via sysfs in the active
mode.
* Eliminate a static checker warning and clean up a kerneldoc
comment.
- Clean up some variable declarations in the powernv cpufreq
driver (Wei Yongjun).
- Fix up the ->enter_s2idle callback definition to cover the case
when it points to the same function as ->idle correctly (Neal
Liu).
- Rearrange and clean up the PSCI cpuidle driver (Ulf Hansson).
- Make the PM core emit "changed" uevent when adding/removing the
"wakeup" sysfs attribute of devices (Abhishek Pandit-Subedi).
- Add a helper macro for declaring PM callbacks and use it in the
MMC jz4740 driver (Paul Cercueil).
- Fix white space in some places in the hibernate code and make the
system-wide PM code use "const char *" where appropriate (Xiang
Chen, Alexey Dobriyan).
- Add one more "unsafe" helper macro to the freezer to cover the NFS
use case (He Zhe).
- Change the language in the generic PM domains framework to use
parent/child terminology and clean up a typo and some comment
fromatting in that code (Kees Cook, Geert Uytterhoeven).
- Update the operating performance points OPP framework (Lukasz
Luba, Andrew-sh.Cheng, Valdis Kletnieks):
* Refactor dev_pm_opp_of_register_em() and update related drivers.
* Add a missing function export.
* Allow disabled OPPs in dev_pm_opp_get_freq().
- Update devfreq core and drivers (Chanwoo Choi, Lukasz Luba, Enric
Balletbo i Serra, Dmitry Osipenko, Kieran Bingham, Marc Zyngier):
* Add support for delayed timers to the devfreq core and make the
Samsung exynos5422-dmc driver use it.
* Unify sysfs interface to use "df-" as a prefix in instance names
consistently.
* Fix devfreq_summary debugfs node indentation.
* Add the rockchip,pmu phandle to the rk3399_dmc driver DT
bindings.
* List Dmitry Osipenko as the Tegra devfreq driver maintainer.
* Fix typos in the core devfreq code.
- Update the pm-graph utility to version 5.7 including a number of
fixes related to suspend-to-idle (Todd Brandt).
- Fix coccicheck errors and warnings in the cpupower utility (Shuah
Khan).
- Replace HTTP links with HTTPs ones in multiple places (Alexander
A. Klimov).
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Merge tag 'pm-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The most significant change here is the extension of the Energy Model
to cover non-CPU devices (as well as CPUs) from Lukasz Luba.
There is also some new hardware support (Ice Lake server idle states
table for intel_idle, Sapphire Rapids and Power Limit 4 support in the
RAPL driver), some new functionality in the existing drivers (eg. a
new switch to disable/enable CPU energy-efficiency optimizations in
intel_pstate, delayed timers in devfreq), some assorted fixes (cpufreq
core, intel_pstate, intel_idle) and cleanups (eg. cpuidle-psci,
devfreq), including the elimination of W=1 build warnings from cpufreq
done by Lee Jones.
Specifics:
- Make the Energy Model cover non-CPU devices (Lukasz Luba).
- Add Ice Lake server idle states table to the intel_idle driver and
eliminate a redundant static variable from it (Chen Yu, Rafael
Wysocki).
- Eliminate all W=1 build warnings from cpufreq (Lee Jones).
- Add support for Sapphire Rapids and for Power Limit 4 to the Intel
RAPL power capping driver (Sumeet Pawnikar, Zhang Rui).
- Fix function name in kerneldoc comments in the idle_inject power
capping driver (Yangtao Li).
- Fix locking issues with cpufreq governors and drop a redundant
"weak" function definition from cpufreq (Viresh Kumar).
- Rearrange cpufreq to register non-modular governors at the
core_initcall level and allow the default cpufreq governor to be
specified in the kernel command line (Quentin Perret).
- Extend, fix and clean up the intel_pstate driver (Srinivas
Pandruvada, Rafael Wysocki):
* Add a new sysfs attribute for disabling/enabling CPU
energy-efficiency optimizations in the processor.
* Make the driver avoid enabling HWP if EPP is not supported.
* Allow the driver to handle numeric EPP values in the sysfs
interface and fix the setting of EPP via sysfs in the active
mode.
* Eliminate a static checker warning and clean up a kerneldoc
comment.
- Clean up some variable declarations in the powernv cpufreq driver
(Wei Yongjun).
- Fix up the ->enter_s2idle callback definition to cover the case
when it points to the same function as ->idle correctly (Neal Liu).
- Rearrange and clean up the PSCI cpuidle driver (Ulf Hansson).
- Make the PM core emit "changed" uevent when adding/removing the
"wakeup" sysfs attribute of devices (Abhishek Pandit-Subedi).
- Add a helper macro for declaring PM callbacks and use it in the MMC
jz4740 driver (Paul Cercueil).
- Fix white space in some places in the hibernate code and make the
system-wide PM code use "const char *" where appropriate (Xiang
Chen, Alexey Dobriyan).
- Add one more "unsafe" helper macro to the freezer to cover the NFS
use case (He Zhe).
- Change the language in the generic PM domains framework to use
parent/child terminology and clean up a typo and some comment
fromatting in that code (Kees Cook, Geert Uytterhoeven).
- Update the operating performance points OPP framework (Lukasz Luba,
Andrew-sh.Cheng, Valdis Kletnieks):
* Refactor dev_pm_opp_of_register_em() and update related drivers.
* Add a missing function export.
* Allow disabled OPPs in dev_pm_opp_get_freq().
- Update devfreq core and drivers (Chanwoo Choi, Lukasz Luba, Enric
Balletbo i Serra, Dmitry Osipenko, Kieran Bingham, Marc Zyngier):
* Add support for delayed timers to the devfreq core and make the
Samsung exynos5422-dmc driver use it.
* Unify sysfs interface to use "df-" as a prefix in instance
names consistently.
* Fix devfreq_summary debugfs node indentation.
* Add the rockchip,pmu phandle to the rk3399_dmc driver DT
bindings.
* List Dmitry Osipenko as the Tegra devfreq driver maintainer.
* Fix typos in the core devfreq code.
- Update the pm-graph utility to version 5.7 including a number of
fixes related to suspend-to-idle (Todd Brandt).
- Fix coccicheck errors and warnings in the cpupower utility (Shuah
Khan).
- Replace HTTP links with HTTPs ones in multiple places (Alexander A.
Klimov)"
* tag 'pm-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits)
cpuidle: ACPI: fix 'return' with no value build warning
cpufreq: intel_pstate: Fix EPP setting via sysfs in active mode
cpufreq: intel_pstate: Rearrange the storing of new EPP values
intel_idle: Customize IceLake server support
PM / devfreq: Fix the wrong end with semicolon
PM / devfreq: Fix indentaion of devfreq_summary debugfs node
PM / devfreq: Clean up the devfreq instance name in sysfs attr
memory: samsung: exynos5422-dmc: Add module param to control IRQ mode
memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold
memory: samsung: exynos5422-dmc: Use delayed timer as default
PM / devfreq: Add support delayed timer for polling mode
dt-bindings: devfreq: rk3399_dmc: Add rockchip,pmu phandle
PM / devfreq: tegra: Add Dmitry as a maintainer
PM / devfreq: event: Fix trivial spelling
PM / devfreq: rk3399_dmc: Fix kernel oops when rockchip,pmu is absent
cpuidle: change enter_s2idle() prototype
cpuidle: psci: Prevent domain idlestates until consumers are ready
cpuidle: psci: Convert PM domain to platform driver
cpuidle: psci: Fix error path via converting to a platform driver
cpuidle: psci: Fail cpuidle registration if set OSI mode failed
...
|
|
|
Linus Torvalds
|
09a0bd0776 |
platform-drivers-x86 for v5.9-1
* ASUS WMI driver honors BAT1 name of the battery (quite a few new laptops are using it) * Dell WMI driver supports new key codes and backlight events * ThinkPad ACPI driver now may use standard charge threshold interface, it also has been updated to provide Laptop or Desktop mode to the user * Intel Speed Select Technology gained support on Sapphire Rapids platform * Regular update of Speed Select Technology tools * Mellanox has been updated to support complex attributes * PMC core driver has been fixed to show correct names for LPM0 register * HTTP links were replaced by HTTPS ones where it applies * Miscellaneous fixes and cleanups here and there The following is an automated git shortlog grouped by driver: acerhdf: - Replace HTTP links with HTTPS ones Add new intel_atomisp2_led driver: - Add new intel_atomisp2_led driver apple-gmux: - Replace HTTP links with HTTPS ones asus-nb-wmi: - Drop duplicate DMI quirk structures - add support for ASUS ROG Zephyrus G14 and G15 asus-wmi: - allow BAT1 battery name dell-wmi: - add new dmi mapping for keycode 0xffff - add new keymap type 0x0012 - add new backlight events intel_cht_int33fe: - Drop double check for ACPI companion device intel-hid: - Fix return value check in check_acpi_dev() intel_pmc_core: - fix bound check in pmc_core_mphy_pg_show() - update TGL's LPM0 reg bit map name intel-vbtn: - Fix return value check in check_acpi_dev() ISST: - drop a duplicated word in isst_if.h - Add new PCI device ids pcengines-apuv2: - revert wiring up simswitch GPIO as LED platform/mellanox: - Introduce string_upper() and string_lower() helpers - Add string_upper() and string_lower() tests - Extend FAN platform data description - Add more definitions for system attributes - Add new attribute for mlxreg-io sysfs interfaces - Add presence register field for FAN devices - Add support for complex attributes - mlxreg-io: Add support for complex attributes - mlxreg-hotplug: Add environmental data to uevent - mlxreg-hotplug: Use capability register for attribute creation - mlxreg-hotplug: Modify module license system76-acpi: - Fix brightness_set schedule while atomic thinkpad_acpi: - Make some symbols static - add documentation for battery charge control - use standard charge control attribute names - remove unused defines - Replace HTTP links with HTTPS ones - not loading brightness_init when _BCL invalid - lap or desk mode interface - Revert "Use strndup_user() in dispatch_proc_write()" tools/power/x86/intel-speed-select: - Update version for v5.9 - Add retries for mail box commands - Add option to delay mbox commands - Ignore -o option processing on error - Change path for caching topology info -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEqaflIX74DDDzMJJtb7wzTHR8rCgFAl8n9UIACgkQb7wzTHR8 rCg0cRAAnHC699qMns53T+jSMAc9kY5vrwbf2Bacwjp5vYS7uw3S12kLNgQh6JWM B8imS1RAMlHfCvGT9vUs+mbpemCfYpFZ0HQ4z+VMzziKayJu8pCD9O2XDS9lRUHj uKqA19FX6lXfJnrhRoi3vM0JC35FXZQZkueLyJ728t1xqcDkNS2/O/by3c76XnK1 r81jl9m+qMJwB5zt+6qeSWjZAgFCTDvOHA/gZTEKF1VBOcafN1RHWTLH49JtpBH7 +pPoy9mw3zfDJReqKxFhaXgDlueBlRwTBG5kEQk9aIxgA9T8q2jqEyAw5XtAKOWp RCebgCpC5NHXyz/2CVzaJWYikS/Iuvr4ynx6F2nKXVClGMtF7Obb2/3rvSCOTMri ge1bJ2NomUL9F5Cd/iR/F4/jNtxk9LSuzW+otA+/m+g8UkK574cefQQmBdrhrfDU GqK6C1kB7OQW2v3tPKVsWvduXQTaaCVzINEkdUxK50PXZayY7+w0djM+QFR/sadw 2/okr1zuNjFnEt7HtZRP5bzEm1ofXVo5JIaCnpwgsz6dCQH4NiuVxsc/GyanRpBJ AadUAYcD+PRRnOybsfhx5MlUt/JIr6cV0OvT8LlWPINJjTpWPlqMeBYdDUOLCndX 3LXmoZ0k8IQ2LLmONc5UBX1+iayCO+PkHcBDoJdNuWT1eoO06M8= =yvnW -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86 Pull x86 platform driver updates from Andy Shevchenko: - ASUS WMI driver honors BAT1 name of the battery (quite a few new laptops are using it) - Dell WMI driver supports new key codes and backlight events - ThinkPad ACPI driver now may use standard charge threshold interface, it also has been updated to provide Laptop or Desktop mode to the user - Intel Speed Select Technology gained support on Sapphire Rapids platform - Regular update of Speed Select Technology tools - Mellanox has been updated to support complex attributes - PMC core driver has been fixed to show correct names for LPM0 register - HTTP links were replaced by HTTPS ones where it applies - Miscellaneous fixes and cleanups here and there * tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86: (42 commits) platform/x86: asus-nb-wmi: Drop duplicate DMI quirk structures platform/x86: thinkpad_acpi: Make some symbols static platform/x86: thinkpad_acpi: add documentation for battery charge control platform/x86: thinkpad_acpi: use standard charge control attribute names platform/x86: thinkpad_acpi: remove unused defines platform/x86: ISST: drop a duplicated word in isst_if.h tools/power/x86/intel-speed-select: Update version for v5.9 tools/power/x86/intel-speed-select: Add retries for mail box commands tools/power/x86/intel-speed-select: Add option to delay mbox commands tools/power/x86/intel-speed-select: Ignore -o option processing on error tools/power/x86/intel-speed-select: Change path for caching topology info platform/x86: acerhdf: Replace HTTP links with HTTPS ones platform/x86: apple-gmux: Replace HTTP links with HTTPS ones platform/x86: pcengines-apuv2: revert wiring up simswitch GPIO as LED platform/x86: mlx-platform: Extend FAN platform data description platform_data/mlxreg: Add presence register field for FAN devices Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces platform/mellanox: mlxreg-io: Add support for complex attributes platform/x86: mlx-platform: Add more definitions for system attributes platform_data/mlxreg: Add support for complex attributes ... |
|
|
Linus Torvalds
|
e4cbce4d13 |
The main changes in this cycle were:
- Improve uclamp performance by using a static key for the fast path
- Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
better power efficiency of RT tasks on battery powered devices.
(The default is to maximize performance & reduce RT latencies.)
- Improve utime and stime tracking accuracy, which had a fixed boundary
of error, which created larger and larger relative errors as the values
become larger. This is now replaced with more precise arithmetics,
using the new mul_u64_u64_div_u64() helper in math64.h.
- Improve the deadline scheduler, such as making it capacity aware
- Improve frequency-invariant scheduling
- Misc cleanups in energy/power aware scheduling
- Add sched_update_nr_running tracepoint to track changes to nr_running
- Documentation additions and updates
- Misc cleanups and smaller fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Improve uclamp performance by using a static key for the fast path
- Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
better power efficiency of RT tasks on battery powered devices.
(The default is to maximize performance & reduce RT latencies.)
- Improve utime and stime tracking accuracy, which had a fixed boundary
of error, which created larger and larger relative errors as the
values become larger. This is now replaced with more precise
arithmetics, using the new mul_u64_u64_div_u64() helper in math64.h.
- Improve the deadline scheduler, such as making it capacity aware
- Improve frequency-invariant scheduling
- Misc cleanups in energy/power aware scheduling
- Add sched_update_nr_running tracepoint to track changes to nr_running
- Documentation additions and updates
- Misc cleanups and smaller fixes
* tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/doc: Factorize bits between sched-energy.rst & sched-capacity.rst
sched/doc: Document capacity aware scheduling
sched: Document arch_scale_*_capacity()
arm, arm64: Fix selection of CONFIG_SCHED_THERMAL_PRESSURE
Documentation/sysctl: Document uclamp sysctl knobs
sched/uclamp: Add a new sysctl to control RT default boost value
sched/uclamp: Fix a deadlock when enabling uclamp static key
sched: Remove duplicated tick_nohz_full_enabled() check
sched: Fix a typo in a comment
sched/uclamp: Remove unnecessary mutex_init()
arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE
sched: Cleanup SCHED_THERMAL_PRESSURE kconfig entry
arch_topology, sched/core: Cleanup thermal pressure definition
trace/events/sched.h: fix duplicated word
linux/sched/mm.h: drop duplicated words in comments
smp: Fix a potential usage of stale nr_cpus
sched/fair: update_pick_idlest() Select group with lowest group_util when idle_cpus are equal
sched: nohz: stop passing around unused "ticks" parameter.
sched: Better document ttwu()
sched: Add a tracepoint to track rq->nr_running
...
|
|
|
Linus Torvalds
|
8f0cb6660a |
These are the latest RCU bits for v5.9:
- kfree_rcu updates - RCU tasks updates - Read-side scalability tests - SRCU updates - Torture-test updates - Documentation updates - Miscellaneous fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8n80ERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gauA/+NtuExW9V9cPDZ8AAp6x6QfoEIgqN4VEk pYuyP0+ZbmwH+h8z7qPqMrwxUHQnhef7gqtlWa7wj9MawbEbmqnA/3uivjX/3Aao bGMMXkqXppc6hgwktgLNk8vfq3LRVEH2P0i0I+Tymgxu3DCHSGRep4LWfdAS/q3z 4pe5JXqdMx+Qnfy/bsVxJTaJAncMq1LQNAtWY1TIwK8L8RmpXrj5dvuLKUr7q+zl P+BfXyrdX+x05TpmHHnI/bR3w9yASL32E0S3IaQYRRqH8TsUIGHWe13Ib6hKXXG5 j7W5KrsOgr0fQBxi+JW2fgGQkrua4o7yk4H2Ygj+Fi5RvP2uqNZdvXFAlP2cUMu/ 7Pg8+7kC6jKIrwpD03s9ZZzm0QN3jsCxFs2PEkkHMzjXbe1CI4tIkTH6ex1uvjR2 v3OhCIp6ypxpEIJbFQucia0iQ4NF+evKjqCvRkbepqQ096jg+CNFh0VG0Tp8XR+y Gk9B9oXvLLPMd6ah5CI9nLJKiMWVRV8mvvqspoblGo//+39ksh4mzxm865tFXYg4 C+DPJvKlY15Ib5eJ/xr8EZ/oS0K2sUF9sMYnK4P8QMhyTBMbpAZiljHYK+Wujt8I g/JCWxrEMv3LHPY9/guB5Nod/Qb4Jqqm9iE9qEX3MQxtt2O2nmmWd91pzFcUXlFU RDBWYJ63Okg= =rNhf -----END PGP SIGNATURE----- Merge tag 'core-rcu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: - kfree_rcu updates - RCU tasks updates - Read-side scalability tests - SRCU updates - Torture-test updates - Documentation updates - Miscellaneous fixes * tag 'core-rcu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (109 commits) torture: Remove obsolete "cd $KVM" torture: Avoid duplicate specification of qemu command torture: Dump ftrace at shutdown only if requested torture: Add kvm-tranform.sh script for qemu-cmd files torture: Add more tracing crib notes to kvm.sh torture: Improve diagnostic for KCSAN-incapable compilers torture: Correctly summarize build-only runs torture: Pass --kmake-arg to all make invocations rcutorture: Check for unwatched readers torture: Abstract out console-log error detection torture: Add a stop-run capability torture: Create qemu-cmd in --buildonly runs rcu/rcutorture: Replace 0 with false torture: Add --allcpus argument to the kvm.sh script torture: Remove whitespace from identify_qemu_vcpus output rcutorture: NULL rcu_torture_current earlier in cleanup code rcutorture: Handle non-statistic bang-string error messages torture: Set configfile variable to current scenario rcutorture: Add races with task-exit processing locktorture: Use true and false to assign to bool variables ... |
|
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Linus Torvalds
|
145ff1ec09 |
arm64 and cross-arch updates for 5.9:
- Removal of the tremendously unpopular read_barrier_depends() barrier,
which is a NOP on all architectures apart from Alpha, in favour of
allowing architectures to override READ_ONCE() and do whatever dance
they need to do to ensure address dependencies provide LOAD ->
LOAD/STORE ordering. This work also offers a potential solution if
compilers are shown to convert LOAD -> LOAD address dependencies into
control dependencies (e.g. under LTO), as weakly ordered architectures
will effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic, augment
the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the device
ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions and
kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 and cross-arch updates from Catalin Marinas:
"Here's a slightly wider-spread set of updates for 5.9.
Going outside the usual arch/arm64/ area is the removal of
read_barrier_depends() series from Will and the MSI/IOMMU ID
translation series from Lorenzo.
The notable arm64 updates include ARMv8.4 TLBI range operations and
translation level hint, time namespace support, and perf.
Summary:
- Removal of the tremendously unpopular read_barrier_depends()
barrier, which is a NOP on all architectures apart from Alpha, in
favour of allowing architectures to override READ_ONCE() and do
whatever dance they need to do to ensure address dependencies
provide LOAD -> LOAD/STORE ordering.
This work also offers a potential solution if compilers are shown
to convert LOAD -> LOAD address dependencies into control
dependencies (e.g. under LTO), as weakly ordered architectures will
effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at
LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic,
augment the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the
device ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions
and kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words"
Link: http://lkml.kernel.org/r/20200710165203.31284-1-will@kernel.org
Link: http://lkml.kernel.org/r/20200619082013.13661-1-lorenzo.pieralisi@arm.com
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (82 commits)
arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
arm64/mm: save memory access in check_and_switch_context() fast switch path
arm64: sigcontext.h: delete duplicated word
arm64: ptrace.h: delete duplicated word
arm64: pgtable-hwdef.h: delete duplicated words
bus: fsl-mc: Add ACPI support for fsl-mc
bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
of/irq: Make of_msi_map_rid() PCI bus agnostic
of/irq: make of_msi_map_get_device_domain() bus agnostic
dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
of/device: Add input id to of_dma_configure()
of/iommu: Make of_map_rid() PCI agnostic
ACPI/IORT: Add an input ID to acpi_dma_configure()
ACPI/IORT: Remove useless PCI bus walk
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
arm64: enable time namespace support
arm64/vdso: Restrict splitting VVAR VMA
arm64/vdso: Handle faults on timens page
...
|
|
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Masami Hiramatsu
|
c58b46cba7 |
Documentation: bootconfig: Add bootconfig override operator
Add a sentence about bootconfig override operator (":=") to
bootconfig.rst.
Link: https://lkml.kernel.org/r/159482884682.126704.7198860675721719878.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
|
|
|
Linus Torvalds
|
382625d0d4 |
for-5.9/block-20200802
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Merge tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block
Pull core block updates from Jens Axboe:
"Good amount of cleanups and tech debt removals in here, and as a
result, the diffstat shows a nice net reduction in code.
- Softirq completion cleanups (Christoph)
- Stop using ->queuedata (Christoph)
- Cleanup bd claiming (Christoph)
- Use check_events, moving away from the legacy media change
(Christoph)
- Use inode i_blkbits consistently (Christoph)
- Remove old unused writeback congestion bits (Christoph)
- Cleanup/unify submission path (Christoph)
- Use bio_uninit consistently, instead of bio_disassociate_blkg
(Christoph)
- sbitmap cleared bits handling (John)
- Request merging blktrace event addition (Jan)
- sysfs add/remove race fixes (Luis)
- blk-mq tag fixes/optimizations (Ming)
- Duplicate words in comments (Randy)
- Flush deferral cleanup (Yufen)
- IO context locking/retry fixes (John)
- struct_size() usage (Gustavo)
- blk-iocost fixes (Chengming)
- blk-cgroup IO stats fixes (Boris)
- Various little fixes"
* tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block: (135 commits)
block: blk-timeout: delete duplicated word
block: blk-mq-sched: delete duplicated word
block: blk-mq: delete duplicated word
block: genhd: delete duplicated words
block: elevator: delete duplicated word and fix typos
block: bio: delete duplicated words
block: bfq-iosched: fix duplicated word
iocost_monitor: start from the oldest usage index
iocost: Fix check condition of iocg abs_vdebt
block: Remove callback typedefs for blk_mq_ops
block: Use non _rcu version of list functions for tag_set_list
blk-cgroup: show global disk stats in root cgroup io.stat
blk-cgroup: make iostat functions visible to stat printing
block: improve discard bio alignment in __blkdev_issue_discard()
block: change REQ_OP_ZONE_RESET and REQ_OP_ZONE_RESET_ALL to be odd numbers
block: defer flush request no matter whether we have elevator
block: make blk_timeout_init() static
block: remove retry loop in ioc_release_fn()
block: remove unnecessary ioc nested locking
block: integrate bd_start_claiming into __blkdev_get
...
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Linus Torvalds
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690b25675f |
fscrypt updates for 5.9
This release, we add support for inline encryption via the blk-crypto framework which was added in 5.8. Now when an ext4 or f2fs filesystem is mounted with '-o inlinecrypt', the contents of encrypted files will be encrypted/decrypted via blk-crypto, instead of directly using the crypto API. This model allows taking advantage of the inline encryption hardware that is integrated into the UFS or eMMC host controllers on most mobile SoCs. Note that this is just an alternate implementation; the ciphertext written to disk stays the same. (This pull request does *not* include support for direct I/O on encrypted files, which blk-crypto makes possible, since that part is still being discussed.) Besides the above feature update, there are also a few fixes and cleanups, e.g. strengthening some memory barriers that may be too weak. All these patches have been in linux-next with no reported issues. I've also tested them with the fscrypt xfstests, as usual. It's also been tested that the inline encryption support works with the support for Qualcomm and Mediatek inline encryption hardware that will be in the scsi pull request for 5.9. Also, several SoC vendors are already using a previous, functionally equivalent version of these patches. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCXye2EBQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOK0veAQCKEnwvy+M6s2/QWhC9vo01rABMtt7h VRAAKPiFzLNH3AD/dCnZNsFUzk3x0ZyiU1YRW3FvlxFOaEO7Ea0Pt/pyyQ0= =g9FK -----END PGP SIGNATURE----- Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt Pull fscrypt updates from Eric Biggers: "This release, we add support for inline encryption via the blk-crypto framework which was added in 5.8. Now when an ext4 or f2fs filesystem is mounted with '-o inlinecrypt', the contents of encrypted files will be encrypted/decrypted via blk-crypto, instead of directly using the crypto API. This model allows taking advantage of the inline encryption hardware that is integrated into the UFS or eMMC host controllers on most mobile SoCs. Note that this is just an alternate implementation; the ciphertext written to disk stays the same. (This pull request does *not* include support for direct I/O on encrypted files, which blk-crypto makes possible, since that part is still being discussed.) Besides the above feature update, there are also a few fixes and cleanups, e.g. strengthening some memory barriers that may be too weak. All these patches have been in linux-next with no reported issues. I've also tested them with the fscrypt xfstests, as usual. It's also been tested that the inline encryption support works with the support for Qualcomm and Mediatek inline encryption hardware that will be in the scsi pull request for 5.9. Also, several SoC vendors are already using a previous, functionally equivalent version of these patches" * tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt: fscrypt: don't load ->i_crypt_info before it's known to be valid fscrypt: document inline encryption support fscrypt: use smp_load_acquire() for ->i_crypt_info fscrypt: use smp_load_acquire() for ->s_master_keys fscrypt: use smp_load_acquire() for fscrypt_prepared_key fscrypt: switch fscrypt_do_sha256() to use the SHA-256 library fscrypt: restrict IV_INO_LBLK_* to AES-256-XTS fscrypt: rename FS_KEY_DERIVATION_NONCE_SIZE fscrypt: add comments that describe the HKDF info strings ext4: add inline encryption support f2fs: add inline encryption support fscrypt: add inline encryption support fs: introduce SB_INLINECRYPT |