The following commit has been merged into the sched/core branch of tip: Commit-ID: 3ae70c251f344976428d1f6ee61ea7b4e170fec3 Gitweb: https://git.kernel.org/tip/3ae70c251f344976428d1f6ee61ea7b4e170fec3 Author: Vincent Donnefort <vincent.donnef...@arm.com> AuthorDate: Tue, 16 Feb 2021 10:35:04 Committer: Ingo Molnar <mi...@kernel.org> CommitterDate: Sat, 06 Mar 2021 12:40:22 +01:00
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.donnef...@arm.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Signed-off-by: Ingo Molnar <mi...@kernel.org> Link: https://lkml.kernel.org/r/20210216103506.416286-2-vincent.donnef...@arm.com --- kernel/cpu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/cpu.c b/kernel/cpu.c index 1b6302e..9121edf 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;
