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Linus Torvalds 33c66eb5e9 Performance events changes for v7.1: 
Core updates:
 
  - Try to allocate task_ctx_data quickly, to optimize
    O(N^2) algorithm on large systems with O(100k) threads
    (Namhyung Kim)
 
 AMD PMU driver IBS support updates and fixes, by Ravi Bangoria:
 
  - Fix interrupt accounting for discarded samples
  - Fix a Zen5-specific quirk
  - Fix PhyAddrVal handling
  - Fix NMI-safety with perf_allow_kernel()
  - Fix a race between event add and NMIs
 
 Intel PMU driver updates:
 
  - Only check GP counters for PEBS constraints validation (Dapeng Mi)
 
 MSR driver:
 
  - Turn SMI_COUNT and PPERF on by default, instead of a long
    list of CPU models to enable them on (Kan Liang)
 
 Misc cleanups and fixes by Aldf Conte, Anshuman Khandual, Namhyung Kim,
 Ravi Bangoria and Yen-Hsiang Hsu.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull performance events updates from Ingo Molnar:
 "Core updates:

   - Try to allocate task_ctx_data quickly, to optimize O(N^2) algorithm
     on large systems with O(100k) threads (Namhyung Kim)

  AMD PMU driver IBS support updates and fixes, by Ravi Bangoria:
   - Fix interrupt accounting for discarded samples
   - Fix a Zen5-specific quirk
   - Fix PhyAddrVal handling
   - Fix NMI-safety with perf_allow_kernel()
   - Fix a race between event add and NMIs

  Intel PMU driver updates:
   - Only check GP counters for PEBS constraints validation (Dapeng Mi)

  MSR driver:
   - Turn SMI_COUNT and PPERF on by default, instead of a long list of
     CPU models to enable them on (Kan Liang)

  ... and misc cleanups and fixes by Aldf Conte, Anshuman Khandual,
  Namhyung Kim, Ravi Bangoria and Yen-Hsiang Hsu"

* tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/events: Replace READ_ONCE() with standard pgtable accessors
  perf/x86/msr: Make SMI and PPERF on by default
  perf/x86/intel/p4: Fix unused variable warning in p4_pmu_init()
  perf/x86/intel: Only check GP counters for PEBS constraints validation
  perf/x86/amd/ibs: Fix comment typo in ibs_op_data
  perf/amd/ibs: Advertise remote socket capability
  perf/amd/ibs: Enable streaming store filter
  perf/amd/ibs: Enable RIP bit63 hardware filtering
  perf/amd/ibs: Enable fetch latency filtering
  perf/amd/ibs: Support IBS_{FETCH|OP}_CTL2[Dis] to eliminate RMW race
  perf/amd/ibs: Add new MSRs and CPUID bits definitions
  perf/amd/ibs: Define macro for ldlat mask and shift
  perf/amd/ibs: Avoid race between event add and NMI
  perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler
  perf/amd/ibs: Preserve PhyAddrVal bit when clearing PhyAddr MSR
  perf/amd/ibs: Limit ldlat->l3missonly dependency to Zen5
  perf/amd/ibs: Account interrupt for discarded samples
  perf/core: Simplify __detach_global_ctx_data()
  perf/core: Try to allocate task_ctx_data quickly
  perf/core: Pass GFP flags to attach_task_ctx_data()
History 2026-04-14 13:22:40 -07:00
..
amd Performance events changes for v7.1: 2026-04-14 13:22:40 -07:00
asm.h x86/asm: Remove code depending on __GCC_ASM_FLAG_OUTPUTS__ 2025-09-08 15:38:06 +02:00
atomic.h tools: KVM: selftests: Convert clear/set_bit() to actual atomics 2022-12-02 13:22:35 -05:00
barrier.h tools: add smp_* barrier variants to include infrastructure 2019-04-11 14:45:50 -07:00
cmpxchg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpufeatures.h x86/cpufeatures: Add AMD CPPC Performance Priority feature. 2026-04-02 11:28:21 -05:00
emulate_prefix.h x86: xen: insn: Decode Xen and KVM emulate-prefix signature 2019-10-17 21:31:57 +02:00
inat.h x86/insn: Add XOP prefix instructions decoder support 2025-08-18 17:15:02 +02:00
inat_types.h objtool: Move x86 insn decoder to a common location 2019-08-31 22:27:52 -03:00
insn.h x86/insn: Simplify for_each_insn_prefix() 2025-10-16 11:13:48 +02:00
io.h tools headers: Import iosubmit_cmds512() 2025-08-27 12:14:08 -06:00
msr-index.h tools arch x86: Sync the msr-index.h copy with the kernel sources 2026-03-22 18:31:54 -03:00
nops.h x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers 2025-03-19 11:47:30 +01:00
orc_types.h objtool/x86: Reorder ORC register numbering 2026-03-18 09:38:52 +01:00
pvclock-abi.h x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers 2025-03-19 11:47:30 +01:00
pvclock.h tools: arch: x86: pull in pvclock headers 2021-10-18 14:43:45 -04:00
rmwcc.h work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
special_insns.h tools headers: Import iosubmit_cmds512() 2025-08-27 12:14:08 -06:00