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%3Ba=su...
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 stable@vger.kernel.org know about it.
From foo@baz Tue Dec 12 10:32:42 CET 2017
From: Madhavan Srinivasan maddy@linux.vnet.ibm.com Date: Wed, 22 Nov 2017 10:45:38 +0530 Subject: powerpc/perf: Fix pmu_count to count only nest imc pmus
From: Madhavan Srinivasan maddy@linux.vnet.ibm.com
[ 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.
Signed-off-by: Madhavan Srinivasan maddy@linux.vnet.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/platforms/powernv/opal-imc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/powerpc/platforms/powernv/opal-imc.c +++ b/arch/powerpc/platforms/powernv/opal-imc.c @@ -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 maddy@linux.vnet.ibm.com are
queue-4.14/powerpc-perf-fix-pmu_count-to-count-only-nest-imc-pmus.patch