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| author |   Anna-Maria Gleixner <anna-maria@linutronix.de> | 2016-03-11 11:52:37 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-17 13:18:24 +0100 |
| commit | a987884295891f18fddf9c76d7d47c9486701560 (patch) | |
| tree | 6921a7f2ac914484b1596db00ee471fa6be7c06b /arch/s390 | |
| parent | Merge tag 'fbdev-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux (diff) | |
| download | linux-dev-a987884295891f18fddf9c76d7d47c9486701560.tar.xz linux-dev-a987884295891f18fddf9c76d7d47c9486701560.zip | |
s390/cpum_cf: Fix missing cpu hotplug notifier transition
The cpumf_pmu_notfier() hotplug callback lacks handling of the
CPU_DOWN_FAILED case. That means, if CPU_DOWN_PREPARE failes, the PMC
of the CPU is not setup again.
Add handling for CPU_DOWN_FAILED transition to setup the PMC of the
CPU.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/perf_cpum_cf.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c index 58bf4572d457..62f066b5259e 100644 --- a/arch/s390/kernel/perf_cpum_cf.c +++ b/arch/s390/kernel/perf_cpum_cf.c @@ -670,6 +670,7 @@ static int cpumf_pmu_notifier(struct notifier_block *self, unsigned long action, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: + case CPU_DOWN_FAILED: flags = PMC_INIT; smp_call_function_single(cpu, setup_pmc_cpu, &flags, 1); break; |