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Merge tag 'perf_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 perf fixes from Borislav Petkov:

 - Make sure the PEBS buffer is drained before reconfiguring the
   hardware

 - Add Arrow Lake U support

* tag 'perf_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/ds: Unconditionally drain PEBS DS when changing PEBS_DATA_CFG
  perf/x86/intel: Add Arrow Lake U support
This commit is contained in:
Linus Torvalds
2024-12-09 10:31:35 -08:00
parent df9e2102de 9f3de72a0c
commit e4c995f92b
2 changed files with 2 additions and 1 deletions
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1
arch/x86/events/intel/core.c
View File

@@ -7135,6 +7135,7 @@ __init int intel_pmu_init(void)
case INTEL_METEORLAKE:
case INTEL_METEORLAKE_L:
case INTEL_ARROWLAKE_U:
intel_pmu_init_hybrid(hybrid_big_small);
x86_pmu.pebs_latency_data = cmt_latency_data;

2
arch/x86/events/intel/ds.c
View File

@@ -1489,7 +1489,7 @@ void intel_pmu_pebs_enable(struct perf_event *event)
* hence we need to drain when changing said
* size.
*/
intel_pmu_drain_large_pebs(cpuc);
intel_pmu_drain_pebs_buffer();
adaptive_pebs_record_size_update();
wrmsrl(MSR_PEBS_DATA_CFG, pebs_data_cfg);
cpuc->active_pebs_data_cfg = pebs_data_cfg;