perf/x86/intel/uncore: Fix filter_tid mask for CHA events on Skylake Server

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")
Signed-off-by: Alexander Antonov <alexander.antonov@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20211115090334.3789-2-alexander.antonov@linux.intel.com

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index eb2c6ce..e5ee6bb 100644 (file)
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -3608,6 +3608,9 @@ 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.*/
+       if (event->hw.config & SNBEP_CBO_PMON_CTL_TID_EN)
+               idx = SKX_CHA_MSR_PMON_BOX_FILTER_TID;
 
        for (er = skx_uncore_cha_extra_regs; er->msr; er++) {
                if (er->event != (event->hw.config & er->config_mask))