Messages in this thread Patch in this message |  | | From | alexander.antonov@linux ... | Subject | [RESEND PATCH 1/3] Fix filter_tid mask for CHA events on Skylake Server | Date | Wed, 20 Oct 2021 14:00:26 +0300 |
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From: Alexander Antonov <alexander.antonov@linux.intel.com>
According Uncore Reference Manual: any of the CHA events may be filtered by Thread/Core-ID by using tid modifier in CHA Filter 0 Register. Update skx_cha_hw_config() to follow Uncore Guide.
Fixes: cd34cd97b7b4 ("perf/x86/intel/uncore: Add Skylake server uncore support") Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com> --- arch/x86/events/intel/uncore_snbep.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 5ddc0f30db6f..9cc65a4194ce 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -3607,7 +3607,9 @@ static int skx_cha_hw_config(struct intel_uncore_box *box, struct perf_event *ev { struct hw_perf_event_extra *reg1 = &event->hw.extra_reg; struct extra_reg *er; - int idx = 0; + /* Any of the CHA events may be filtered by Thread/Core-ID.*/ + int idx = !!(event->hw.config & SNBEP_CBO_PMON_CTL_TID_EN) ? + SKX_CHA_MSR_PMON_BOX_FILTER_TID : 0; for (er = skx_uncore_cha_extra_regs; er->msr; er++) { if (er->event != (event->hw.config & er->config_mask)) -- 2.21.3
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