drivers/perf: hisi_pcie: Check the type first in pmu::event_init()

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[ Upstream commit 6d7d51e88e ]

Check whether the event type matches the PMU type firstly in
pmu::event_init() before touching the event. Otherwise we'll
change the events of others and lead to incorrect results.
Since in perf_init_event() we may call every pmu's event_init()
in a certain case, we should not modify the event if it's not
ours.

Fixes: 8404b0fbc7 ("drivers/perf: hisi: Add driver for HiSilicon PCIe PMU")
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20231024092954.42297-2-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yicong Yang 2023-10-24 17:29:53 +08:00 • committed by Greg Kroah-Hartman

parent c6e00bc30e

commit 104fa6426a

1 changed files with 4 additions and 3 deletions

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drivers/perf/hisilicon/hisi_pcie_pmu.c

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