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powerpc/perf: Fix the threshold event selection for memory events in power10

Message ID 1614840015-1535-1-git-send-email-atrajeev@linux.vnet.ibm.com (mailing list archive)
State Accepted
Headers show
Series powerpc/perf: Fix the threshold event selection for memory events in power10 | expand

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Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (626a6c3d2e20da80aaa710104f34ea6037b28b33)
snowpatch_ozlabs/build-ppc64le success Build succeeded
snowpatch_ozlabs/build-ppc64be success Build succeeded
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snowpatch_ozlabs/needsstable warning Please consider tagging this patch for stable!

Commit Message

Athira Rajeev March 4, 2021, 6:40 a.m. UTC
Memory events (mem-loads and mem-stores) currently use the threshold
event selection as issue to finish. Power10 supports issue to complete
as part of thresholding which is more appropriate for mem-loads and
mem-stores. Hence fix the event code for memory events to use issue
to complete.

Fixes: a64e697cef23 ("powerpc/perf: power10 Performance Monitoring support")
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
---
 arch/powerpc/perf/power10-events-list.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Madhavan Srinivasan March 9, 2021, 11:28 a.m. UTC | #1
On 3/4/21 12:10 PM, Athira Rajeev wrote:
> Memory events (mem-loads and mem-stores) currently use the threshold
> event selection as issue to finish. Power10 supports issue to complete
> as part of thresholding which is more appropriate for mem-loads and
> mem-stores. Hence fix the event code for memory events to use issue
> to complete.

Changes looks fine to me.

Reviewed-by: Madhavan Srinivasan <maddy@linux.ibm.com>

We should also CC stable to include this fix?


> Fixes: a64e697cef23 ("powerpc/perf: power10 Performance Monitoring support")
> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
> ---
>   arch/powerpc/perf/power10-events-list.h | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/perf/power10-events-list.h b/arch/powerpc/perf/power10-events-list.h
> index e45dafe818ed..93be7197d250 100644
> --- a/arch/powerpc/perf/power10-events-list.h
> +++ b/arch/powerpc/perf/power10-events-list.h
> @@ -75,5 +75,5 @@
>    *     thresh end (TE)
>    */
>   
> -EVENT(MEM_LOADS,				0x34340401e0);
> -EVENT(MEM_STORES,				0x343c0401e0);
> +EVENT(MEM_LOADS,				0x35340401e0);
> +EVENT(MEM_STORES,				0x353c0401e0);
Michael Ellerman April 29, 2021, 2:01 p.m. UTC | #2
On Thu, 4 Mar 2021 01:40:15 -0500, Athira Rajeev wrote:
> Memory events (mem-loads and mem-stores) currently use the threshold
> event selection as issue to finish. Power10 supports issue to complete
> as part of thresholding which is more appropriate for mem-loads and
> mem-stores. Hence fix the event code for memory events to use issue
> to complete.

Applied to powerpc/next.

[1/1] powerpc/perf: Fix the threshold event selection for memory events in power10
      https://git.kernel.org/powerpc/c/66d9b7492887d34c711bc05b36c22438acba51b4

cheers
diff mbox series

Patch

diff --git a/arch/powerpc/perf/power10-events-list.h b/arch/powerpc/perf/power10-events-list.h
index e45dafe818ed..93be7197d250 100644
--- a/arch/powerpc/perf/power10-events-list.h
+++ b/arch/powerpc/perf/power10-events-list.h
@@ -75,5 +75,5 @@ 
  *     thresh end (TE)
  */
 
-EVENT(MEM_LOADS,				0x34340401e0);
-EVENT(MEM_STORES,				0x343c0401e0);
+EVENT(MEM_LOADS,				0x35340401e0);
+EVENT(MEM_STORES,				0x353c0401e0);