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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-12 10:23:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-12 10:23:59 -0800 |
| commit | 67549d46d42eed58731028bebe304bc8cbd7af01 (patch) | |
| tree | a0f5f7664ae96d3f0ce693f46987a820539dcae5 | |
| parent | 02776b9b5399183f273fa898fef64b1e977a5f85 (diff) | |
| parent | 541676078b52f365f53d46ee5517d305cd1b6350 (diff) | |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"A Kconfig fix, a build fix and a membarrier bug fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
membarrier: Disable preemption when calling smp_call_function_many()
sched/isolation: Make CONFIG_CPU_ISOLATION=y depend on SMP or COMPILE_TEST
ia64, sched/cputime: Fix build error if CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y
| -rw-r--r-- | arch/ia64/kernel/time.c | 2 | ||||
| -rw-r--r-- | init/Kconfig | 1 | ||||
| -rw-r--r-- | kernel/sched/membarrier.c | 2 |
3 files changed, 4 insertions, 1 deletions
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c index c6ecb97151a2..9025699049ca 100644 --- a/arch/ia64/kernel/time.c +++ b/arch/ia64/kernel/time.c @@ -88,7 +88,7 @@ void vtime_flush(struct task_struct *tsk) } if (ti->softirq_time) { - delta = cycle_to_nsec(ti->softirq_time)); + delta = cycle_to_nsec(ti->softirq_time); account_system_index_time(tsk, delta, CPUTIME_SOFTIRQ); } diff --git a/init/Kconfig b/init/Kconfig index 19a6b845d834..a9a2e2c86671 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -461,6 +461,7 @@ endmenu # "CPU/Task time and stats accounting" config CPU_ISOLATION bool "CPU isolation" + depends on SMP || COMPILE_TEST default y help Make sure that CPUs running critical tasks are not disturbed by diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index dd7908743dab..9bcbacba82a8 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -89,7 +89,9 @@ static int membarrier_private_expedited(void) rcu_read_unlock(); } if (!fallback) { + preempt_disable(); smp_call_function_many(tmpmask, ipi_mb, NULL, 1); + preempt_enable(); free_cpumask_var(tmpmask); } cpus_read_unlock(); |