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| author | Stephen Boyd <sboyd@codeaurora.org> | 2013-06-24 17:45:02 -0700 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2013-06-24 17:45:02 -0700 |
| commit | 42cba6e27c4cddc4df701c597dbfa666e1c013c8 (patch) | |
| tree | 6fe38f37a79391bce3db56f311d0f3b83711fad0 /kernel/workqueue.c | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
| parent | 2699339361a9bacb3fa663e6b8981a040cfca4ee (diff) | |
Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into remove-local-timers
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 4aa9f5bc6b2..1ae602809ef 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -4311,6 +4311,12 @@ bool current_is_workqueue_rescuer(void) * no synchronization around this function and the test result is * unreliable and only useful as advisory hints or for debugging. * + * If @cpu is WORK_CPU_UNBOUND, the test is performed on the local CPU. + * Note that both per-cpu and unbound workqueues may be associated with + * multiple pool_workqueues which have separate congested states. A + * workqueue being congested on one CPU doesn't mean the workqueue is also + * contested on other CPUs / NUMA nodes. + * * RETURNS: * %true if congested, %false otherwise. */ @@ -4321,6 +4327,9 @@ bool workqueue_congested(int cpu, struct workqueue_struct *wq) rcu_read_lock_sched(); + if (cpu == WORK_CPU_UNBOUND) + cpu = smp_processor_id(); + if (!(wq->flags & WQ_UNBOUND)) pwq = per_cpu_ptr(wq->cpu_pwqs, cpu); else |