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| author | Ingo Molnar <mingo@kernel.org> | 2017-05-05 08:20:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-05-05 08:21:03 +0200 |
| commit | 415812f2d6b856d33ede9bf4a2b95575dbbb3d4e (patch) | |
| tree | 4daf9ca52f89ea59453538b406f584d47c77aff3 /kernel/workqueue.c | |
| parent | 42fc6c6cb1662ba2fa727dd01c9473c63be4e3b6 (diff) | |
| parent | d3b5d35290d729a2518af00feca867385a1b08fa (diff) | |
| download | lwn-415812f2d6b856d33ede9bf4a2b95575dbbb3d4e.tar.gz lwn-415812f2d6b856d33ede9bf4a2b95575dbbb3d4e.zip | |
Merge branch 'linus' into x86/urgent, to pick up dependent commits
We are going to fix a bug introduced by a more recent commit, so
refresh the tree.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index c0168b7da1ea..c74bf39ef764 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -3209,9 +3209,8 @@ static int init_worker_pool(struct worker_pool *pool) INIT_LIST_HEAD(&pool->idle_list); hash_init(pool->busy_hash); - init_timer_deferrable(&pool->idle_timer); - pool->idle_timer.function = idle_worker_timeout; - pool->idle_timer.data = (unsigned long)pool; + setup_deferrable_timer(&pool->idle_timer, idle_worker_timeout, + (unsigned long)pool); setup_timer(&pool->mayday_timer, pool_mayday_timeout, (unsigned long)pool); @@ -4735,6 +4734,29 @@ long work_on_cpu(int cpu, long (*fn)(void *), void *arg) return wfc.ret; } EXPORT_SYMBOL_GPL(work_on_cpu); + +/** + * work_on_cpu_safe - run a function in thread context on a particular cpu + * @cpu: the cpu to run on + * @fn: the function to run + * @arg: the function argument + * + * Disables CPU hotplug and calls work_on_cpu(). The caller must not hold + * any locks which would prevent @fn from completing. + * + * Return: The value @fn returns. + */ +long work_on_cpu_safe(int cpu, long (*fn)(void *), void *arg) +{ + long ret = -ENODEV; + + get_online_cpus(); + if (cpu_online(cpu)) + ret = work_on_cpu(cpu, fn, arg); + put_online_cpus(); + return ret; +} +EXPORT_SYMBOL_GPL(work_on_cpu_safe); #endif /* CONFIG_SMP */ #ifdef CONFIG_FREEZER |