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Diffstat (limited to 'arch/powerpc/perf/power9-pmu.c')
-rw-r--r--arch/powerpc/perf/power9-pmu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 9abcd8f65504..c396d5e5098c 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -30,6 +30,7 @@ enum {
#define POWER9_MMCRA_IFM1 0x0000000040000000UL
#define POWER9_MMCRA_IFM2 0x0000000080000000UL
#define POWER9_MMCRA_IFM3 0x00000000C0000000UL
+#define POWER9_MMCRA_BHRB_MASK 0x00000000C0000000UL
GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC);
GENERIC_EVENT_ATTR(stalled-cycles-frontend, PM_ICT_NOSLOT_CYC);
@@ -177,6 +178,8 @@ static u64 power9_bhrb_filter_map(u64 branch_sample_type)
static void power9_config_bhrb(u64 pmu_bhrb_filter)
{
+ pmu_bhrb_filter &= POWER9_MMCRA_BHRB_MASK;
+
/* Enable BHRB filter in PMU */
mtspr(SPRN_MMCRA, (mfspr(SPRN_MMCRA) | pmu_bhrb_filter));
}