Patchwork [V2,2/2] powerpc, perf: BHRB filter configuration should follow the task

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Submitter Anshuman Khandual
Date May 28, 2013, 4:47 a.m.
Message ID <1369716452-28689-3-git-send-email-khandual@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/246694/
State Not Applicable
Headers show

Comments

Anshuman Khandual - May 28, 2013, 4:47 a.m.
When the task moves around the system, the corresponding cpuhw
per cpu strcuture should be popullated with the BHRB filter
request value so that PMU could be configured appropriately with
that during the next call into power_pmu_enable().

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
 arch/powerpc/perf/core-book3s.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Patch

diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 426180b..48c68a8 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -1122,8 +1122,11 @@  nocheck:
 
 	ret = 0;
  out:
-	if (has_branch_stack(event))
+	if (has_branch_stack(event)) {
 		power_pmu_bhrb_enable(event);
+		cpuhw->bhrb_filter = ppmu->bhrb_filter_map(
+					event->attr.branch_sample_type);
+	}
 
 	perf_pmu_enable(event->pmu);
 	local_irq_restore(flags);