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| author |   Vincent Donnefort <vincent.donnefort@arm.com> | 2021-02-16 10:35:04 +0000 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2021-03-06 12:40:22 +0100 |
| commit | 3ae70c251f344976428d1f6ee61ea7b4e170fec3 (patch) | |
| tree | 12eb53005c7010cd4ebb09966bda979eb15ec68a /kernel/cpu.c | |
| parent | sched/pelt: Fix task util_est update filtering (diff) | |
| download | linux-dev-3ae70c251f344976428d1f6ee61ea7b4e170fec3.tar.xz linux-dev-3ae70c251f344976428d1f6ee61ea7b4e170fec3.zip | |
cpu/hotplug: Allowing to reset fail injection
Currently, the only way of resetting the fail injection is to trigger a
hotplug, hotunplug or both. This is rather annoying for testing
and, as the default value for this file is -1, it seems pretty natural to
let a user write it.
Signed-off-by: Vincent Donnefort <vincent.donnefort@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210216103506.416286-2-vincent.donnefort@arm.com
Diffstat (limited to 'kernel/cpu.c')
| -rw-r--r-- | kernel/cpu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 1b6302ecbabe..9121edf5759a 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -2207,6 +2207,11 @@ static ssize_t write_cpuhp_fail(struct device *dev, if (ret) return ret; + if (fail == CPUHP_INVALID) { + st->fail = fail; + return count; + } + if (fail < CPUHP_OFFLINE || fail > CPUHP_ONLINE) return -EINVAL; |