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Patch "powerpc/perf: Fix pmu_count to count only nest imc pmus" has been added to the 4.14-stable tree

PATCH [email protected] 1 participant 1 message Dec 12, 2017

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This is a note to let you know that I've just added the patch titled

powerpc/perf: Fix pmu_count to count only nest imc pmus

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
powerpc-perf-fix-pmu_count-to-count-only-nest-imc-pmus.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Tue Dec 12 10:32:42 CET 2017

From: Madhavan Srinivasan <[email protected]>
Date: Wed, 22 Nov 2017 10:45:38 +0530
Subject: powerpc/perf: Fix pmu_count to count only nest imc pmus

From: Madhavan Srinivasan <[email protected]>

[ Upstream commit de34787f1096cce38e2590be0013b44418d14546 ]

"pmu_count" in opal_imc_counters_probe() is intended to hold the number of successful nest imc pmu registerations. But current code also counts other imc units like core_imc and thread_imc. Patch add a check to count only nest imc pmus.

---
 arch/powerpc/platforms/powernv/opal-imc.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
arch/powerpc/platforms/powernv/opal-imc.c +4 -2
@@ -191,8 +191,10 @@ static int opal_imc_counters_probe(struc
 			break;
 		}
 
-		if (!imc_pmu_create(imc_dev, pmu_count, domain))
-			pmu_count++;
+		if (!imc_pmu_create(imc_dev, pmu_count, domain)) {
+			if (domain == IMC_DOMAIN_NEST)
+				pmu_count++;
+		}
 	}
 
 	return 0;

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/powerpc-perf-fix-pmu_count-to-count-only-nest-imc-pmus.patch