- The biggest change in this cycle is scheduler support for asymmetric
scheduling affinity, to support the execution of legacy 32-bit tasks on
AArch32 systems that also have 64-bit-only CPUs.
Architectures can fill in this functionality by defining their
own task_cpu_possible_mask(p). When this is done, the scheduler will
make sure the task will only be scheduled on CPUs that support it.
(The actual arm64 specific changes are not part of this tree.)
For other architectures there will be no change in functionality.
- Add cgroup SCHED_IDLE support
- Increase node-distance flexibility & delay determining it until a CPU
is brought online. (This enables platforms where node distance isn't
final until the CPU is only.)
- Deadline scheduler enhancements & fixes
- Misc fixes & cleanups.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=VdGE
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- The biggest change in this cycle is scheduler support for asymmetric
scheduling affinity, to support the execution of legacy 32-bit tasks
on AArch32 systems that also have 64-bit-only CPUs.
Architectures can fill in this functionality by defining their own
task_cpu_possible_mask(p). When this is done, the scheduler will make
sure the task will only be scheduled on CPUs that support it.
(The actual arm64 specific changes are not part of this tree.)
For other architectures there will be no change in functionality.
- Add cgroup SCHED_IDLE support
- Increase node-distance flexibility & delay determining it until a CPU
is brought online. (This enables platforms where node distance isn't
final until the CPU is only.)
- Deadline scheduler enhancements & fixes
- Misc fixes & cleanups.
* tag 'sched-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
eventfd: Make signal recursion protection a task bit
sched/fair: Mark tg_is_idle() an inline in the !CONFIG_FAIR_GROUP_SCHED case
sched: Introduce dl_task_check_affinity() to check proposed affinity
sched: Allow task CPU affinity to be restricted on asymmetric systems
sched: Split the guts of sched_setaffinity() into a helper function
sched: Introduce task_struct::user_cpus_ptr to track requested affinity
sched: Reject CPU affinity changes based on task_cpu_possible_mask()
cpuset: Cleanup cpuset_cpus_allowed_fallback() use in select_fallback_rq()
cpuset: Honour task_cpu_possible_mask() in guarantee_online_cpus()
cpuset: Don't use the cpu_possible_mask as a last resort for cgroup v1
sched: Introduce task_cpu_possible_mask() to limit fallback rq selection
sched: Cgroup SCHED_IDLE support
sched/topology: Skip updating masks for non-online nodes
sched: Replace deprecated CPU-hotplug functions.
sched: Skip priority checks with SCHED_FLAG_KEEP_PARAMS
sched: Fix UCLAMP_FLAG_IDLE setting
sched/deadline: Fix missing clock update in migrate_task_rq_dl()
sched/fair: Avoid a second scan of target in select_idle_cpu
sched/fair: Use prev instead of new target as recent_used_cpu
sched: Don't report SCHED_FLAG_SUGOV in sched_getattr()
...
the filesystem bits of resctrl, the ultimate goal being to support ARM's
equivalent technology MPAM, with the same fs interface (James Morse)
-----BEGIN PGP SIGNATURE-----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=1WGp
-----END PGP SIGNATURE-----
Merge tag 'x86_cache_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
"A first round of changes towards splitting the arch-specific bits from
the filesystem bits of resctrl, the ultimate goal being to support
ARM's equivalent technology MPAM, with the same fs interface (James
Morse)"
* tag 'x86_cache_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
x86/resctrl: Make resctrl_arch_get_config() return its value
x86/resctrl: Merge the CDP resources
x86/resctrl: Expand resctrl_arch_update_domains()'s msr_param range
x86/resctrl: Remove rdt_cdp_peer_get()
x86/resctrl: Merge the ctrl_val arrays
x86/resctrl: Calculate the index from the configuration type
x86/resctrl: Apply offset correction when config is staged
x86/resctrl: Make ctrlval arrays the same size
x86/resctrl: Pass configuration type to resctrl_arch_get_config()
x86/resctrl: Add a helper to read a closid's configuration
x86/resctrl: Rename update_domains() to resctrl_arch_update_domains()
x86/resctrl: Allow different CODE/DATA configurations to be staged
x86/resctrl: Group staged configuration into a separate struct
x86/resctrl: Move the schemata names into struct resctrl_schema
x86/resctrl: Add a helper to read/set the CDP configuration
x86/resctrl: Swizzle rdt_resource and resctrl_schema in pseudo_lock_region
x86/resctrl: Pass the schema to resctrl filesystem functions
x86/resctrl: Add resctrl_arch_get_num_closid()
x86/resctrl: Store the effective num_closid in the schema
x86/resctrl: Walk the resctrl schema list instead of an arch list
...
minimal compiler version the kernel uses and thus avoid the need to
invoke the compiler unnecessarily.
- Cleanups
-----BEGIN PGP SIGNATURE-----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=fVgI
-----END PGP SIGNATURE-----
Merge tag 'x86_build_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Borislav Petkov:
- Remove cc-option checks which are old and already supported by the
minimal compiler version the kernel uses and thus avoid the need to
invoke the compiler unnecessarily.
- Cleanups
* tag 'x86_build_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Move the install rule to arch/x86/Makefile
x86/build: Remove the left-over bzlilo target
x86/tools/relocs: Mark die() with the printf function attr format
x86/build: Remove stale cc-option checks
is not up yet - delay that processing until everything is ready
-----BEGIN PGP SIGNATURE-----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=1ROV
-----END PGP SIGNATURE-----
Merge tag 'ras_core_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS update from Borislav Petkov:
"A single RAS change for 5.15:
- Do not start processing MCEs logged early because the decoding
chain is not up yet - delay that processing until everything is
ready"
* tag 'ras_core_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Defer processing of early errors
to the Intel SKx drivers
- Print additional useful per-channel error information on i10nm, like on SKL
- Check whether the AMD decoder is loaded on a guest and if so, don't
- The usual round of fixes and cleanups
-----BEGIN PGP SIGNATURE-----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=JYRz
-----END PGP SIGNATURE-----
Merge tag 'edac_updates_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
"The usual EDAC stuff which managed to trickle in for 5.15:
- Add new HBM2 (High Bandwidth Memory Gen 2) type and add support for
it to the Intel SKx drivers
- Print additional useful per-channel error information on i10nm,
like on SKL
- Don't load the AMD EDAC decoder in virtual images
- The usual round of fixes and cleanups"
* tag 'edac_updates_for_v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/i10nm: Retrieve and print retry_rd_err_log registers
EDAC/i10nm: Fix NVDIMM detection
EDAC/skx_common: Set the memory type correctly for HBM memory
EDAC/altera: Skip defining unused structures for specific configs
EDAC/mce_amd: Do not load edac_mce_amd module on guests
EDAC/mc: Add new HBM2 memory type
EDAC/amd64: Use DEVICE_ATTR helper macros
- Improve ftrace code patching so that stop_machine is not required anymore.
This requires a small common code patch acked by Steven Rostedt:
https://lore.kernel.org/linux-s390/20210730220741.4da6fdf6@oasis.local.home/
- Enable KCSAN for s390. This comes with a small common code change to fix a
compile warning. Acked by Marco Elver:
https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com
- Add KFENCE support for s390. This also comes with a minimal x86 patch from
Marco Elver who said also this can be carried via the s390 tree:
https://lore.kernel.org/linux-s390/YQJdarx6XSUQ1tFZ@elver.google.com/
- More changes to prepare the decompressor for relocation.
- Enable DAT also for CPU restart path.
- Final set of register asm removal patches; leaving only three locations where
needed and sane.
- Add NNPA, Vector-Packed-Decimal-Enhancement Facility 2, PCI MIO support to
hwcaps flags.
- Cleanup hwcaps implementation.
- Add new instructions to in-kernel disassembler.
- Various QDIO cleanups.
- Add SCLP debug feature.
- Various other cleanups and improvements all over the place.
-----BEGIN PGP SIGNATURE-----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=WDRh
-----END PGP SIGNATURE-----
Merge tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Improve ftrace code patching so that stop_machine is not required
anymore. This requires a small common code patch acked by Steven
Rostedt:
https://lore.kernel.org/linux-s390/20210730220741.4da6fdf6@oasis.local.home/
- Enable KCSAN for s390. This comes with a small common code change to
fix a compile warning. Acked by Marco Elver:
https://lore.kernel.org/r/20210729142811.1309391-1-hca@linux.ibm.com
- Add KFENCE support for s390. This also comes with a minimal x86 patch
from Marco Elver who said also this can be carried via the s390 tree:
https://lore.kernel.org/linux-s390/YQJdarx6XSUQ1tFZ@elver.google.com/
- More changes to prepare the decompressor for relocation.
- Enable DAT also for CPU restart path.
- Final set of register asm removal patches; leaving only three
locations where needed and sane.
- Add NNPA, Vector-Packed-Decimal-Enhancement Facility 2, PCI MIO
support to hwcaps flags.
- Cleanup hwcaps implementation.
- Add new instructions to in-kernel disassembler.
- Various QDIO cleanups.
- Add SCLP debug feature.
- Various other cleanups and improvements all over the place.
* tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (105 commits)
s390: remove SCHED_CORE from defconfigs
s390/smp: do not use nodat_stack for secondary CPU start
s390/smp: enable DAT before CPU restart callback is called
s390: update defconfigs
s390/ap: fix state machine hang after failure to enable irq
KVM: s390: generate kvm hypercall functions
s390/sclp: add tracing of SCLP interactions
s390/debug: add early tracing support
s390/debug: fix debug area life cycle
s390/debug: keep debug data on resize
s390/diag: make restart_part2 a local label
s390/mm,pageattr: fix walk_pte_level() early exit
s390: fix typo in linker script
s390: remove do_signal() prototype and do_notify_resume() function
s390/crypto: fix all kernel-doc warnings in vfio_ap_ops.c
s390/pci: improve DMA translation init and exit
s390/pci: simplify CLP List PCI handling
s390/pci: handle FH state mismatch only on disable
s390/pci: fix misleading rc in clp_set_pci_fn()
s390/boot: factor out offset_vmlinux_info() function
...
Pull crypto updates from Herbert Xu:
"Algorithms:
- Add AES-NI/AVX/x86_64 implementation of SM4.
Drivers:
- Add Arm SMCCC TRNG based driver"
[ And obviously a lot of random fixes and updates - Linus]
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (84 commits)
crypto: sha512 - remove imaginary and mystifying clearing of variables
crypto: aesni - xts_crypt() return if walk.nbytes is 0
padata: Remove repeated verbose license text
crypto: ccp - Add support for new CCP/PSP device ID
crypto: x86/sm4 - add AES-NI/AVX2/x86_64 implementation
crypto: x86/sm4 - export reusable AESNI/AVX functions
crypto: rmd320 - remove rmd320 in Makefile
crypto: skcipher - in_irq() cleanup
crypto: hisilicon - check _PS0 and _PR0 method
crypto: hisilicon - change parameter passing of debugfs function
crypto: hisilicon - support runtime PM for accelerator device
crypto: hisilicon - add runtime PM ops
crypto: hisilicon - using 'debugfs_create_file' instead of 'debugfs_create_regset32'
crypto: tcrypt - add GCM/CCM mode test for SM4 algorithm
crypto: testmgr - Add GCM/CCM mode test of SM4 algorithm
crypto: tcrypt - Fix missing return value check
crypto: hisilicon/sec - modify the hardware endian configuration
crypto: hisilicon/sec - fix the abnormal exiting process
crypto: qat - store vf.compatible flag
crypto: qat - do not export adf_iov_putmsg()
...
Pull RCU updates from Paul McKenney:
"RCU changes for this cycle were:
- Documentation updates
- Miscellaneous fixes
- Offloaded-callbacks updates
- Updates to the nolibc library
- Tasks-RCU updates
- In-kernel torture-test updates
- Torture-test scripting, perhaps most notably the pinning of
torture-test guest OSes so as to force differences in memory
latency. For example, in a two-socket system, a four-CPU guest OS
will have one pair of its CPUs pinned to threads in a single core
on one socket and the other pair pinned to threads in a single core
on the other socket. This approach proved able to force race
conditions that earlier testing missed. Some of these race
conditions are still being tracked down"
* 'core-rcu.2021.08.28a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (61 commits)
torture: Replace deprecated CPU-hotplug functions.
rcu: Replace deprecated CPU-hotplug functions
rcu: Print human-readable message for schedule() in RCU reader
rcu: Explain why rcu_all_qs() is a stub in preemptible TREE RCU
rcu: Use per_cpu_ptr to get the pointer of per_cpu variable
rcu: Remove useless "ret" update in rcu_gp_fqs_loop()
rcu: Mark accesses in tree_stall.h
rcu: Make rcu_gp_init() and rcu_gp_fqs_loop noinline to conserve stack
rcu: Mark lockless ->qsmask read in rcu_check_boost_fail()
srcutiny: Mark read-side data races
rcu: Start timing stall repetitions after warning complete
rcu: Do not disable GP stall detection in rcu_cpu_stall_reset()
rcu/tree: Handle VM stoppage in stall detection
rculist: Unify documentation about missing list_empty_rcu()
rcu: Mark accesses to ->rcu_read_lock_nesting
rcu: Weaken ->dynticks accesses and updates
rcu: Remove special bit at the bottom of the ->dynticks counter
rcu: Fix stall-warning deadlock due to non-release of rcu_node ->lock
rcu: Fix to include first blocked task in stall warning
torture: Make kvm-test-1-run-qemu.sh check for reboot loops
...
-----BEGIN PGP SIGNATURE-----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=CfcC
-----END PGP SIGNATURE-----
Merge tag 'locks-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"This starts with a couple of fixes for potential deadlocks in the
fowner/fasync handling.
The next patch removes the old mandatory locking code from the kernel
altogether.
The last patch cleans up rw_verify_area a bit more after the mandatory
locking removal"
* tag 'locks-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs: clean up after mandatory file locking support removal
fs: remove mandatory file locking support
fcntl: fix potential deadlock for &fasync_struct.fa_lock
fcntl: fix potential deadlocks for &fown_struct.lock
-----BEGIN PGP SIGNATURE-----
iIgEABYIADAWIQRE6pSOnaBC00OEHEIaerohdGur0gUCYSPaXRIcamFya2tvQGtl
cm5lbC5vcmcACgkQGnq6IXRrq9JoSwD/cDjd6H5RArCGtEE2P2AhQHza3wKefwU3
Q8VqtspPRkUBAKz0j2+3BjDQMcSh4T2OsXXMYFBjxqUSAif9SQnTUfEL
=LSaf
-----END PGP SIGNATURE-----
Merge tag 'tpmdd-next-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull tpm driver updates from Jarkko Sakkinen:
"The highlights are:
- Support for signing LKM's with ECDSA keys
- An integer overflow bug fix in pkey"
* tag 'tpmdd-next-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
crypto: public_key: fix overflow during implicit conversion
tpm: ibmvtpm: Avoid error message when process gets signal while waiting
certs: Add support for using elliptic curve keys for signing modules
certs: Trigger creation of RSA module signing key if it's not an RSA key
char: tpm: cr50_i2c: convert to new probe interface
char: tpm: Kconfig: remove bad i2c cr50 select
A quiet release for SPI, some fixes and a couple of new drivers
plus one small refactoring:
- Move the chip select timing configuration from the controller
to the device to allow a bit more flexibility.
- New drivers for Rockchip SFC and Spreadtrum ADI.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmEszSgTHGJyb29uaWVA
a2VybmVsLm9yZwAKCRAk1otyXVSH0GQ1B/94SJFSJgXbpF1povbNxa8g9jmniYYu
LBPr354I6bDuIDJbvx9dAQNBxA5HTUHewN/YRHh0ZSMwG1MhM6EGhPy8fT+vlYex
Cz0GlFVlSDHDzXj7c4ozPMhUiPQDHGGO36LQWs6d50uap0wVBQ9xwX4/waRI8tzS
vDfTYWvs32IEMC2LAR4npWHZQC0YOwY+Ohadt3WX0XPK/AaTLK5+JiIb0041AHYS
U8AIRkdbgNeqTxds2CaKqG2EhcBkzHSP5+C+7UKALL8JuYgr0U2x/HgORDIBiJ5d
JubRxyXQvqPF8v68zNhqY9pulnvQgyNsMmyK7yv46hcNOdJo06b3q3Sn
=Cfvr
-----END PGP SIGNATURE-----
Merge tag 'spi-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A quiet release for SPI, some fixes and a couple of new drivers plus
one small refactoring:
- Move the chip select timing configuration from the controller to
the device to allow a bit more flexibility
- New drivers for Rockchip SFC and Spreadtrum ADI"
* tag 'spi-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (47 commits)
spi: spi-zynq-qspi: use wait_for_completion_timeout to make zynq_qspi_exec_mem_op not interruptible
spi: add sprd ADI for sc9863 and ums512
spi: Convert sprd ADI bindings to yaml
spi: sprd: Add ADI r3 support
spi: sprd: Fix the wrong WDG_LOAD_VAL
spi: davinci: invoke chipselect callback
spi: sprd: fill offset only to RD_CMD register for reading from slave device
spi: sprd: Make sure offset not equal to slave address size
spi: sprd: Pass offset instead of physical address to adi_read/_write()
spi: rockchip-sfc: Fix assigned but never used return error codes
spi: rockchip-sfc: Remove redundant IO operations
spi: stm32: fix excluded_middle.cocci warnings
spi: coldfire-qspi: Use clk_disable_unprepare in the remove function
spi: tegra20-slink: remove spi_master_put() in tegra_slink_remove()
spi: rockchip-sfc: add rockchip serial flash controller
spi: rockchip-sfc: Bindings for Rockchip serial flash controller
spi: orion: Prevent incorrect chip select behaviour
spi: mxic: add missing braces
spi: spi-pic32: Fix issue with uninitialized dma_slave_config
spi: spi-fsl-dspi: Fix issue with uninitialized dma_slave_config
...
A very quiet releases, some fixes and cleanups but not really
that many of them. There were a couple of new driver specific
pieces:
- Support for controlling the over/under voltage protection on
BD718xx devices.
- New drivers for Richtek RTQ2134, and RTQ6752.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmEsy2ITHGJyb29uaWVA
a2VybmVsLm9yZwAKCRAk1otyXVSH0L52B/9H9tZw/4rVPcO168WNblOCmL7Xr8Ht
UBKQRMOsKPe671JkoPyQvuFlj+k0gqLF8aQYT+xlPcwp6bg0facOxhhpCi2vNLBp
TC9oQ6qLVjisw0P766v9W7K/teV1EnTHNpwyLM2ksLGk4Rj/v/mu9Y4ykR5odGJZ
IaCUQC46eOMw2r8rOreVxScntoBOEJgTQVhig0V84JEKjwf+Yncs0PNztfj8myu2
lrIXw+cKCDT4yksdP9tnLCIrNGaY5veIc8qHqRNhhDWZtCR5dYOthPSdGTszJ49n
K7eCnERoZVfDuTAiQi35NF0RdZhSTDJtAkeptTh5WocsRpQNfHGWbi5q
=Owj/
-----END PGP SIGNATURE-----
Merge tag 'regulator-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"A very quiet releases, some fixes and cleanups but not really that
many of them. There were a couple of new driver specific pieces:
- Support for controlling the over/under voltage protection on
BD718xx devices
- New drivers for Richtek RTQ2134, and RTQ6752"
* tag 'regulator-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (37 commits)
regulator: vctrl: Avoid lockdep warning in enable/disable ops
regulator: vctrl: Use locked regulator_get_voltage in probe path
regulator: Documentation fix for regulator error notification helper
regulator: Minor regulator documentation fixes.
regulator: sy7636a: Use the regmap directly
regulator: sy7636a: Store the epd-pwr-good GPIO locally
regulator: sy7636a: Use the parent driver data
regulator: sy7636a: Remove the poll_enable_time
regulator: sy8827n: Enable REGCACHE_FLAT
regulator: sy8824x: Enable REGCACHE_FLAT
regulator: rtq2134: Fix coding style
regulator: hi6421v600: rename voltage range arrays
regulator: hi6421v600: use lowercase for ldo
regulator: fixed: use dev_err_probe for register
regulator: rtq2134: Add support for Richtek RTQ2134 SubPMIC
regulator: rtq2134: Add binding document for Richtek RTQ2134 SubPMIC
regulator: Fix a couple of spelling mistakes in Kconfig
regulator: rtq6752: fix reg reset behavior
regulator: da9063: Add support for full-current mode.
regulator: rt6245: make a const array func_base static, makes object smaller
...
A few small fixes for regmaps this time, plus support for
allowing drivers to select raw spinlocks for the locks in order
to allow usage in interrutpt controllers.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmEsyXYTHGJyb29uaWVA
a2VybmVsLm9yZwAKCRAk1otyXVSH0DigB/92NOc4pBVTGIRKL+zaM2YMVaH2wCzp
+9B6A+W/9ZZEjaHPNHKeQJjcSGcC7bo8YmXgcH+eNUUG5PsGcNurxOpp4+hmIUKn
QrhP+vqk9/fMh2cLsekkpcsYOmbRNaapNzhSCPW5MxQuVHohoE46dNjf74pqvO4d
3SC9iJnTf78DCJsaDZRVDXf9d8mqaoEIdAVSOFwzT6afIrjG+rCyuzgPNV5G9DMC
0haTCIoIVsWmhC9wc7r7KFyY6k/kyg+BzMX+opHujGo1uZZKWbnv7ca7bwKay2Jk
Hvrf3dHWiLmHCH6hTwA2qFXMZu2qr1iJuBJ8KfvWlFULGpJ9ZlOhsvro
=1pX9
-----END PGP SIGNATURE-----
Merge tag 'regmap-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A few small fixes for regmaps this time, plus support for allowing
drivers to select raw spinlocks for the locks in order to allow usage
in interrutpt controllers"
* tag 'regmap-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: teach regmap to use raw spinlocks if requested in the config
regmap: allow const array for {devm_,}regmap_field_bulk_alloc reg_fields
regmap: Prefer unsigned int to bare use of unsigned
regmap: fix the offset of register error log
* acpi-dptf:
ACPI: DPTF: Add new PCH FIVR methods
* acpi-processor:
ACPI: processor: Replace deprecated CPU-hotplug functions
* acpi-tables:
ACPI: tables: FPDT: Do not print FW_BUG message if record types are reserved
ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype
* acpi-platform:
ACPI: platform-profile: call sysfs_notify() from platform_profile_store()
As done before in commit cb4a316752 ("cgroup: use bitmask to filter
for_each_subsys"), avoid compiler warnings for the pathological case of
having no subsystems (i.e. CGROUP_SUBSYS_COUNT == 0). This condition is
hit for the arm multi_v7_defconfig config under -Wzero-length-bounds:
In file included from ./arch/arm/include/generated/asm/rwonce.h:1,
from include/linux/compiler.h:264,
from include/uapi/linux/swab.h:6,
from include/linux/swab.h:5,
from arch/arm/include/asm/opcodes.h:86,
from arch/arm/include/asm/bug.h:7,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from include/asm-generic/current.h:5,
from ./arch/arm/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
from include/linux/cgroup.h:12,
from kernel/cgroup/cgroup-internal.h:5,
from kernel/cgroup/cgroup.c:31:
kernel/cgroup/cgroup.c: In function 'of_css':
kernel/cgroup/cgroup.c:651:42: warning: array subscript '<unknown>' is outside the bounds of an
interior zero-length array 'struct cgroup_subsys_state *[0]' [-Wzero-length-bounds]
651 | return rcu_dereference_raw(cgrp->subsys[cft->ss->id]);
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: cgroups@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
* acpica:
ACPICA: Update version to 20210730
ACPICA: Add method name "_DIS" For use with aslmethod.c
ACPICA: iASL: Fix for WPBT table with no command-line arguments
ACPICA: Headers: Add new DBG2 Serial Port Subtypes
ACPICA: Macros should not use a trailing semicolon
ACPICA: Fix an if statement (add parens)
ACPICA: iASL: Add support for the AEST table (data compiler)
* pm-pci:
PCI: PM: Enable PME if it can be signaled from D3cold
PCI: PM: Avoid forcing PCI_D0 for wakeup reasons inconsistently
PCI: Use pci_update_current_state() in pci_enable_device_flags()
* pm-sleep:
PM: sleep: unmark 'state' functions as kernel-doc
PM: sleep: check RTC features instead of ops in suspend_test
PM: sleep: s2idle: Replace deprecated CPU-hotplug functions
* pm-domains:
PM: domains: Fix domain attach for CONFIG_PM_OPP=n
arm64: dts: sc7180: Add required-opps for i2c
PM: domains: Add support for 'required-opps' to set default perf state
opp: Don't print an error if required-opps is missing
* powercap:
powercap: Add Power Limit4 support for Alder Lake SoC
powercap: intel_rapl: Replace deprecated CPU-hotplug functions
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmEmTZcACgkQnJ2qBz9k
QNkkmAgArW6XoF1CePds/ZaC9vfg/nk66/zVo0n+J8xXjMWAPxcKbWFfV0uWVixq
yk4lcLV47a2Mu/B/1oLNd3vrSmhwU+srWqNwOFn1nv+lP/6wJqr8oztRHn/0L9Q3
ZSRrukSejbQ6AvTL/WzTNnCjjCc2ne3Kyko6W41aU6uyJuzhSM32wbx7qlV6t54Z
iint9OrB4gM0avLohNafTUq6I+tEGzBMNwpCG/tqCmkcvDcv3rTDVAnPSCTm0Tx2
hdrYDcY/rLxo93pDBaW1rYA/fohR+mIVye6k2TjkPAL6T1x+rxeT5qnc+YijH5yF
sFPDhlD+ZsfOLi8stWXLOJ+8+gLODg==
=pDBR
-----END PGP SIGNATURE-----
Merge tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fs hole punching vs cache filling race fixes from Jan Kara:
"Fix races leading to possible data corruption or stale data exposure
in multiple filesystems when hole punching races with operations such
as readahead.
This is the series I was sending for the last merge window but with
your objection fixed - now filemap_fault() has been modified to take
invalidate_lock only when we need to create new page in the page cache
and / or bring it uptodate"
* tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
filesystems/locking: fix Malformed table warning
cifs: Fix race between hole punch and page fault
ceph: Fix race between hole punch and page fault
fuse: Convert to using invalidate_lock
f2fs: Convert to using invalidate_lock
zonefs: Convert to using invalidate_lock
xfs: Convert double locking of MMAPLOCK to use VFS helpers
xfs: Convert to use invalidate_lock
xfs: Refactor xfs_isilocked()
ext2: Convert to using invalidate_lock
ext4: Convert to use mapping->invalidate_lock
mm: Add functions to lock invalidate_lock for two mappings
mm: Protect operations adding pages to page cache with invalidate_lock
documentation: Sync file_operations members with reality
mm: Fix comments mentioning i_mutex
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmEmPKcACgkQnJ2qBz9k
QNk6RwgA2GJlJ6g2I/iT64ii4l8nWVEyp1OI/m2DvEaoci+SLp/oIh/VbEMsdj7D
Fvoajo6KRu53/Ucwg+u9i5tygpCcu5X52DB1qZWzNZKxl98EdXRTb9e6n3jNDBti
dz4EAd/YZhADiS5sX9kZLbSE1Kzirx8ULsftZ3T31rkU9n1pJD6tH7qyHDot3oV+
XnONRBb2coJ5E7qeRqa8T35uG9a4JGgnDICg3qISPXn+ZNX4u61vXQu/r2YzTGn5
0b6G3X8YTCLti4w14/eGm9bMw3J5TLqRDg/d73B34ju6xcKPP83j/UmHFyxpNnGD
mg6mi8PyeEiwPbglSdVBaFQoOroK9Q==
=Hket
-----END PGP SIGNATURE-----
Merge tag 'fs_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF and isofs updates from Jan Kara:
"Several smaller fixes and cleanups in UDF and isofs"
* tag 'fs_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf_get_extendedattr() had no boundary checks.
isofs: joliet: Fix iocharset=utf8 mount option
udf: Fix iocharset=utf8 mount option
udf: Get rid of 0-length arrays in struct fileIdentDesc
udf: Get rid of 0-length arrays
udf: Remove unused declaration
udf: Check LVID earlier
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmEmO6kACgkQnJ2qBz9k
QNmP4wf+N4n3pDgCfEBPTFBMzghIqLfFSdRx713cj7u6Bi7qwZB90ChdgGC/J2lh
KVh9KvzneSqo4CoaYYLECDkM9cLGZuX0YEWX7L0+LivEoIVuoFK0OKDcyptKl5FK
fKi5tK287NlgXh9PqxuPlYUsaxQKh7PSqO4+9IgHFX/P7NMbxdRiGg8Nb+rp9XhP
IDzfR/qNqlyjYHJUae5GuE2hsbX8lFAkSnmQiz8ya6c3IZdc8GmaVL1jJI+ynre/
CMHysDV2QPS5UcMjO2YnoG3Osl18TOTsutnCDPzYI2qr4UGB+4RxfCgEVVdc6F3v
p4VfqfJB09sHpkRBrN9Lz+MgxxkVkQ==
=CRIk
-----END PGP SIGNATURE-----
Merge tag 'fiemap_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull FIEMAP cleanups from Jan Kara:
"FIEMAP cleanups from Christoph transitioning all remaining filesystems
supporting FIEMAP (ext2, hpfs) to iomap API and removing the old
helper"
* tag 'fiemap_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fs: remove generic_block_fiemap
hpfs: use iomap_fiemap to implement ->fiemap
ext2: use iomap_fiemap to implement ->fiemap
ext2: make ext2_iomap_ops available unconditionally
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmEmOoUACgkQnJ2qBz9k
QNm8XggA6cbU79idj2HgDG5Wj4X3cd1+NlpPP2HytvTomwqYHJmHPAg0b44AsfHT
ToHeYhIqb78MbLHn8fl4g5+O01raqihbUyIcRNcgdeQcle7Phuv/hDlsr8EOhfea
mec4vottwaoiNn+4o7ciUAIri0stbVL8VPpnOy0X7iCmX7OC2vUvhQQGwvyfmXZm
+F/8jppfvfsxl73SbWhG+sgD83D4ASZ+BGwC1Fx9tHitOVTJzg+CR2C1J4seaK6E
r8+u/K6YKSrCGgA2dOVgzYyp2vHPGbHS4Z3H1HDXS+mtqxHJYqPR54kRT1BqCEQX
Nm4CP7+u6a+86HLpBZi1NhvYrgLTig==
=LJaZ
-----END PGP SIGNATURE-----
Merge tag 'fsnotify_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
"fsnotify speedups when notification actually isn't used and support
for identifying processes which caused fanotify events through pidfd
instead of normal pid"
* tag 'fsnotify_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: optimize the case of no marks of any type
fsnotify: count all objects with attached connectors
fsnotify: count s_fsnotify_inode_refs for attached connectors
fsnotify: replace igrab() with ihold() on attach connector
fanotify: add pidfd support to the fanotify API
fanotify: introduce a generic info record copying helper
fanotify: minor cosmetic adjustments to fid labels
kernel/pid.c: implement additional checks upon pidfd_create() parameters
kernel/pid.c: remove static qualifier from pidfd_create()
The Linux console's VT102 implementation already consumes OSC
("Operating System Command") sequences, probably because that's how
palette changes are transmitted.
In addition to OSC, there are three other major clases of ANSI control
strings: APC ("Application Program Command"), PM ("Privacy Message"),
and DCS ("Device Control String"). They are handled similarly to OSC in
terms of termination.
Source: vt100.net
Add three new enumerated states, one for each of these types. All three
are handled the same way right now--they simply consume input until
terminated. I hope to expand upon this firmament in the future. Add
new predicate ansi_control_string(), returning true for any of these
states. Replace explicit checks against ESosc with calls to this
function. Transition to these states appropriately from the escape
initiation (ESesc) state.
This was motivated by the following Notcurses bugs:
https://github.com/dankamongmen/notcurses/issues/2050https://github.com/dankamongmen/notcurses/issues/1828https://github.com/dankamongmen/notcurses/issues/2069
where standard VT sequences are not consumed by the Linux console. It's
not necessary that the Linux console *support* these sequences, but it
ought *consume* these well-specified classes of sequences.
Tested by sending a variety of escape sequences to the console, and
verifying that they still worked, or were now properly consumed.
Verified that the escapes were properly terminated at a generic level.
Verified that the Notcurses tools continued to show expected output on
the Linux console, except now without escape bleedthrough.
Link: https://lore.kernel.org/lkml/YSydL0q8iaUfkphg@schwarzgerat.orthanc/
Signed-off-by: nick black <dankamongmen@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This just does the "if the architecture does efficient unaligned
handling, start the memcmp using 'unsigned long' accesses", since
Nikolay Borisov found a load that cares.
This is basically the minimal patch, and limited to architectures that
are known to not have slow unaligned handling. We've had the stupid
byte-at-a-time version forever, and nobody has ever even noticed before,
so let's keep the fix minimal.
A potential further improvement would be to align one of the sources in
order to at least minimize unaligned cases, but the only real case of
bigger memcmp() users seems to be the FIDEDUPERANGE ioctl(). As David
Sterba says, the dedupe ioctl is typically called on ranges spanning
many pages so the common case will all be page-aligned anyway.
All the relevant architectures select HAVE_EFFICIENT_UNALIGNED_ACCESS,
so I'm not going to worry about the combination of a very rare use-case
and a rare architecture until somebody actually hits it. Particularly
since Nikolay also tested the more complex patch with extra alignment
handling code, and it only added overhead.
Link: https://lore.kernel.org/lkml/20210721135926.602840-1-nborisov@suse.com/
Reported-by: Nikolay Borisov <nborisov@suse.com>
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When new work is added, io_wqe_enqueue() checks if we need to wake or
create a new worker. But that check is done outside the lock that
otherwise synchronizes us with a worker going to sleep, so we can end
up in the following situation:
CPU0 CPU1
lock
insert work
unlock
atomic_read(nr_running) != 0
lock
atomic_dec(nr_running)
no wakeup needed
Hold the wqe lock around the "need to wakeup" check. Then we can also get
rid of the temporary work_flags variable, as we know the work will remain
valid as long as we hold the lock.
Cc: stable@vger.kernel.org
Reported-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_uring no longer queues async work off completion handlers that run in
hard or soft interrupt context, and that use case was the only reason that
io-wq had to use IRQ safe locks for wqe and worker locks.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
For the two places where new workers are created, we diligently check if
we are allowed to create a new worker. If we're currently at the limit
of how many workers of a given type we can have, then we don't create
any new ones.
If you have a mixed workload with various types of bound and unbounded
work, then it can happen that a worker finishes one type of work and
is then transitioned to the other type. For this case, we don't check
if we are actually allowed to do so. This can cause io-wq to temporarily
exceed the allowed number of workers for a given type.
When retrieving work, check that the types match. If they don't, check
if we are allowed to transition to the other type. If not, then don't
handle the new work.
Cc: stable@vger.kernel.org
Reported-by: Johannes Lundberg <johalun0@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a if statements to avoid the warning.
Dan Carpenter report:
The patch faf482ca196a: "net: ipv4: Move ip_options_fragment() out of
loop" from Aug 23, 2021, leads to the following Smatch complaint:
net/ipv4/ip_output.c:833 ip_do_fragment()
warn: variable dereferenced before check 'iter.frag' (see line 828)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: faf482ca19 ("net: ipv4: Move ip_options_fragment() out of loop")
Link: https://lore.kernel.org/netdev/20210830073802.GR7722@kadam/T/#t
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
These checks are still not strict enough. The main problem is that if
"cb->type == QRTR_TYPE_NEW_SERVER" is true then "len - hdrlen" is
guaranteed to be 4 but we need to be at least 16 bytes. In fact, we
can reject everything smaller than sizeof(*pkt) which is 20 bytes.
Also I don't like the ALIGN(size, 4). It's better to just insist that
data is needs to be aligned at the start.
Fixes: 0baa99ee35 ("net: qrtr: Allow non-immediate node routing")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
syzbot report an array-index-out-of-bounds in taprio_change
index 16 is out of range for type '__u16 [16]'
that's because mqprio->num_tc is lager than TC_MAX_QUEUE,so we check
the return value of netdev_set_num_tc.
Reported-by: syzbot+2b3e5fb6c7ef285a94f6@syzkaller.appspotmail.com
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In netlbl_cipsov4_add_std() when 'doi_def->map.std' alloc
failed, we sometime observe panic:
BUG: kernel NULL pointer dereference, address:
...
RIP: 0010:cipso_v4_doi_free+0x3a/0x80
...
Call Trace:
netlbl_cipsov4_add_std+0xf4/0x8c0
netlbl_cipsov4_add+0x13f/0x1b0
genl_family_rcv_msg_doit.isra.15+0x132/0x170
genl_rcv_msg+0x125/0x240
This is because in cipso_v4_doi_free() there is no check
on 'doi_def->map.std' when doi_def->type got value 1, which
is possibe, since netlbl_cipsov4_add_std() haven't initialize
it before alloc 'doi_def->map.std'.
This patch just add the check to prevent panic happen in similar
cases.
Reported-by: Abaci <abaci@linux.alibaba.com>
Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet says:
====================
inet: make exception handling less predictible
This second round of patches is addressing Keyu Man recommendations
to make linux hosts more robust against a class of brute force attacks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Even after commit 6457378fe7 ("ipv4: use siphash instead of Jenkins in
fnhe_hashfun()"), an attacker can still use brute force to learn
some secrets from a victim linux host.
One way to defeat these attacks is to make the max depth of the hash
table bucket a random value.
Before this patch, each bucket of the hash table used to store exceptions
could contain 6 items under attack.
After the patch, each bucket would contains a random number of items,
between 6 and 10. The attacker can no longer infer secrets.
This is slightly increasing memory size used by the hash table,
by 50% in average, we do not expect this to be a problem.
This patch is more complex than the prior one (IPv6 equivalent),
because IPv4 was reusing the oldest entry.
Since we need to be able to evict more than one entry per
update_or_create_fnhe() call, I had to replace
fnhe_oldest() with fnhe_remove_oldest().
Also note that we will queue extra kfree_rcu() calls under stress,
which hopefully wont be a too big issue.
Fixes: 4895c771c7 ("ipv4: Add FIB nexthop exceptions.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Keyu Man <kman001@ucr.edu>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-by: David Ahern <dsahern@kernel.org>
Tested-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Even after commit 4785305c05 ("ipv6: use siphash in rt6_exception_hash()"),
an attacker can still use brute force to learn some secrets from a victim
linux host.
One way to defeat these attacks is to make the max depth of the hash
table bucket a random value.
Before this patch, each bucket of the hash table used to store exceptions
could contain 6 items under attack.
After the patch, each bucket would contains a random number of items,
between 6 and 10. The attacker can no longer infer secrets.
This is slightly increasing memory size used by the hash table,
we do not expect this to be a problem.
Following patch is dealing with the same issue in IPv4.
Fixes: 35732d01fe ("ipv6: introduce a hash table to store dst cache")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Keyu Man <kman001@ucr.edu>
Cc: Wei Wang <weiwan@google.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
The following patchset contains Netfilter updates for net-next:
1) Clean up and consolidate ct ecache infrastructure by merging ct and
expect notifiers, from Florian Westphal.
2) Missing counters and timestamp in nfnetlink_queue and _log conntrack
information.
3) Missing error check for xt_register_template() in iptables mangle,
as a incremental fix for the previous pull request, also from
Florian Westphal.
4) Add netfilter hooks for the SRv6 lightweigh tunnel driver, from
Ryoga Sato. The hooks are enabled via nf_hooks_lwtunnel sysctl
to make sure existing netfilter rulesets do not break. There is
a static key to disable the hooks by default.
The pktgen_bench_xmit_mode_netif_receive.sh shows no noticeable
impact in the seg6_input path for non-netfilter users: similar
numbers with and without this patch.
This is a sample of the perf report output:
11.67% kpktgend_0 [ipv6] [k] ipv6_get_saddr_eval
7.89% kpktgend_0 [ipv6] [k] __ipv6_addr_label
7.52% kpktgend_0 [ipv6] [k] __ipv6_dev_get_saddr
6.63% kpktgend_0 [kernel.vmlinux] [k] asm_exc_nmi
4.74% kpktgend_0 [ipv6] [k] fib6_node_lookup_1
3.48% kpktgend_0 [kernel.vmlinux] [k] pskb_expand_head
3.33% kpktgend_0 [ipv6] [k] ip6_rcv_core.isra.29
3.33% kpktgend_0 [ipv6] [k] seg6_do_srh_encap
2.53% kpktgend_0 [ipv6] [k] ipv6_dev_get_saddr
2.45% kpktgend_0 [ipv6] [k] fib6_table_lookup
2.24% kpktgend_0 [kernel.vmlinux] [k] ___cache_free
2.16% kpktgend_0 [ipv6] [k] ip6_pol_route
2.11% kpktgend_0 [kernel.vmlinux] [k] __ipv6_addr_type
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Also add a stat counter for this that gets exported both via old /proc
interface and ctnetlink.
Assuming the old default size of 16536 buckets and max hash occupancy of
64k, this results in 128k insertions (origin+reply), so ~8 entries per
chain on average.
The revised settings in this series will result in about two entries per
bucket on average.
This allows a hard-limit ceiling of 64.
This is not tunable at the moment, but its possible to either increase
nf_conntrack_buckets or decrease nf_conntrack_max to reduce average
lengths.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Replace jhash in conntrack and nat core with siphash.
While at it, use the netns mix value as part of the input key
rather than abuse the seed value.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
conntrack has two distinct table size settings:
nf_conntrack_max and nf_conntrack_buckets.
The former limits how many conntrack objects are allowed to exist
in each namespace.
The second sets the size of the hashtable.
As all entries are inserted twice (once for original direction, once for
reply), there should be at least twice as many buckets in the table than
the maximum number of conntrack objects that can exist at the same time.
Change the default multiplier to 1 and increase the chosen bucket sizes.
This results in the same nf_conntrack_max settings as before but reduces
the average bucket list length.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Linus Walleij says:
====================
IXP46x PTP Timer clean-up and DT
ChangeLog v2->v3:
- Dropped the patch enabling compile tests: we are still dependent
on some machine-specific headers. The plan is to get rid of this
after device tree conversion. We include one of the compile testing
fixes anyway, because it is nice to have fixed.
- Rebased on the latest net-next
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds device tree probing support for the PTP module
adjacent to the ethernet module. It is pretty straight
forward, all resources are in the device tree as they
come to the platform device.
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds device tree bindings for the IXP46x PTP Timer, a companion
to the IXP4xx ethernet in newer platforms.
Cc: devicetree@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds