linux-kernel - [Patch v2 0/6] x86 perf bug fixes and optimization

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Message-Id: <20250811090034.51249-1-dapeng1.mi@linux.intel.com>
Date: Mon, 11 Aug 2025 17:00:28 +0800
From: Dapeng Mi <dapeng1.mi@...ux.intel.com>
To: Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Eranian Stephane <eranian@...gle.com>
Cc: linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Dapeng Mi <dapeng1.mi@...el.com>,
	Dapeng Mi <dapeng1.mi@...ux.intel.com>
Subject: [Patch v2 0/6] x86 perf bug fixes and optimization

This patch-set aggregates previously sent individual perf/x86 patches to
make the review more convenient. The patches 1-3/6 fix 3 x86 perf issues
and the last 3 patches enhance/optimize x86 perf code.

Changes:
  v1 -> v2:
  * Rebase to 6.17-rc1.
  * No code changes.

Tests:
  * Run perf stats/record commands on Intel Sapphire Rapids platform, no
    issue is found.

History:
  V1:
  * Patch 1/6: https://lore.kernel.org/all/20250606111606.84350-1-dapeng1.mi@linux.intel.com/
  * Patch 2/6: https://lore.kernel.org/all/20250529080236.2552247-1-dapeng1.mi@linux.intel.com/
  * Patch 3/6: https://lore.kernel.org/all/20250718062602.21444-1-dapeng1.mi@linux.intel.com/
  * Patches 4-6/6: https://lore.kernel.org/all/20250717090302.11316-1-dapeng1.mi@linux.intel.com/

Dapeng Mi (6):
  perf/x86/intel: Use early_initcall() to hook bts_init()
  perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error
  perf/x86: Check if cpuc->events[*] pointer exists before accessing it
  perf/x86: Add PERF_CAP_PEBS_TIMING_INFO flag
  perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to
    BIT_ULL(48)
  perf/x86/intel: Add ICL_FIXED_0_ADAPTIVE bit into
    INTEL_FIXED_BITS_MASK

 arch/x86/events/core.c                 |  3 +++
 arch/x86/events/intel/bts.c            |  2 +-
 arch/x86/events/intel/core.c           | 27 +++++++++++++-------------
 arch/x86/events/intel/ds.c             | 13 ++++++-------
 arch/x86/include/asm/msr-index.h       | 14 +++++++------
 arch/x86/include/asm/perf_event.h      |  8 ++++++--
 arch/x86/kvm/pmu.h                     |  2 +-
 tools/arch/x86/include/asm/msr-index.h | 14 +++++++------
 8 files changed, 47 insertions(+), 36 deletions(-)


base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
-- 
2.34.1