Commit 423cf990 authored by Junhao He's avatar Junhao He Committed by Ma Wupeng
Browse files

drivers/perf: hisi: Advertise the PERF_PMU_CAP_NO_EXCLUDE capability 

mainline inclusion
from mainline-v6.3-rc1
commit 7f95da9d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I77IH6
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f95da9d2dc4c20bb374c281ceb8fa40b6208f4b



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Missed initialization the variable of pmu::capabilities when extract
the initialization code of hisi_pmu->pmu into a function.

HISI UNCORE PMU drivers counters that not support context exclusion.
So we have to advertise the PERF_PMU_CAP_NO_EXCLUDE capability.
This ensures that perf will prevent us from handling events where
any exclusion flags are set.

Signed-off-by: default avatarJunhao He <hejunhao3@huawei.com>
Link: https://lore.kernel.org/r/20230119100307.3660-2-hejunhao3@huawei.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent c38992d6

drivers/perf/hisilicon/hisi_uncore_pmu.c

+1 −0
Original line number Diff line number Diff line
@@ -552,6 +552,7 @@ void hisi_pmu_init(struct pmu *pmu, const char *name, 
	pmu->stop               = hisi_uncore_pmu_stop;

	pmu->read               = hisi_uncore_pmu_read;

	pmu->attr_groups        = attr_groups;

	pmu->capabilities       = PERF_PMU_CAP_NO_EXCLUDE;

}

EXPORT_SYMBOL_GPL(hisi_pmu_init);