| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 109/164] powerpc/perf: Fix pmu_count to count only nest imc pmus | Date | Tue, 12 Dec 2017 13:44:49 +0100 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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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;
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