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Perf events fixes:

Browse source 
- Fixes for KVM guest PEBS virtualization (Sean Christopherson)
 
  - Fixes for various Intel PMUs related to PEBS data-source
    (Dapeng Mi)
 
  - Fix Intel Panther Cove event scheduling constraints (Dapeng Mi)
 
  - Fix Intel DMR/NVL OMR extra registers event scheduling (Dapeng Mi)
 
  - Rename two confusingly named PMU attributes (Dapeng Mi)
 
  - Fix a refcount leak in attach_perf_ctx_data() (Namhyung Kim)
 
  - Fix NULL pointer dereference crash in __perf_pmu_sched_task()
    (Puranjay Mohan)
 
  - Fix CPU-wide event scheduling (Puranjay Mohan)
 
  - Fix x86 LBR branch entry generation (Puranjay Mohan)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf events fixes from Ingo Molnar:

 - Fixes for KVM guest PEBS virtualization (Sean Christopherson)

 - Fixes for various Intel PMUs related to PEBS data-source (Dapeng Mi)

 - Fix Intel Panther Cove event scheduling constraints (Dapeng Mi)

 - Fix Intel DMR/NVL OMR extra registers event scheduling (Dapeng Mi)

 - Rename two confusingly named PMU attributes (Dapeng Mi)

 - Fix a refcount leak in attach_perf_ctx_data() (Namhyung Kim)

 - Fix NULL pointer dereference crash in __perf_pmu_sched_task()
   (Puranjay Mohan)

 - Fix CPU-wide event scheduling (Puranjay Mohan)

 - Fix x86 LBR branch entry generation (Puranjay Mohan)

* tag 'perf-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fill branch entries with a single assignment
  perf/core: Run sched_task() for PMUs with only CPU-wide events
  perf/core: Fix NULL pmu_ctx passed to pmu->sched_task()
  perf/core: Fix a refcount leak in attach_perf_ctx_data()
  perf/x86/intel: Rename NVL offcore_rsp attribute to offmodule_rsp
  perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rsp
  perf/x86/intel: Fix precise OMR event scheduling for DMR/NVL
  perf/x86/intel: Constrain Panther Cove UOPS_DISPATCHED events to PMCs 0-3
  perf/x86/intel: Delete dead NVL PEBS data-source initcall
  perf/x86/intel: Fix Panther Cove PEBS data-source snoop states
  perf/x86/intel: Remove incorrect Panther Cove PEBS data-source constraints
  perf/x86/intel: Remove incorrect LionCove PEBS data-source constraints
  perf/x86/intel: Update arw_latency_data() mem-op direction handling
  perf/x86/intel: Fix DKT PEBS load/store direction for latency events, to fix sample classification
  perf/x86/intel: Fix CMT PEBS load/store direction for latency events, to fix sample classification
  perf/x86/intel: Fix GRT PEBS load/store direction for latency events, to fix sample classification
  perf/x86/intel: Make @data a mandatory param for intel_guest_get_msrs()
  perf/x86/intel: Don't pointlessly context switch DS_AREA (and PEBS config) if PEBS is unused
  perf/x86/intel: Don't write PEBS_ENABLED on host<=>guest xfers if CPU has PEBS isolation, to fix stuck PEBS_ENABLED
  perf/x86/intel: Ensure KVM guest PEBS path doesn't set unwanted PERF_GLOBAL_CTRL bits
This commit is contained in:
Linus Torvalds 2026-09-27 08:15:58 -07:00
commit 5ccda18d1b
9 changed files with 196 additions and 139 deletions
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