diff options
| author | Venkatesh Pallipadi <venki@google.com> | 2011-02-10 10:23:27 +0100 |
|---|---|---|
| committer | AK <andi@firstfloor.org> | 2011-03-31 11:58:00 -0700 |
| commit | 70501ead1f5f8760d9ec1c3fd7f69cfe62c5f35e (patch) | |
| tree | 0cdb08337712a349dba90ce19c7057272f291e83 /kernel | |
| parent | aa42a9b327e862d49d3695fe88b6833d18ecd285 (diff) | |
sched: Add a PF flag for ksoftirqd identification
Commit: 6cdd5199daf0cb7b0fcc8dca941af08492612887 upstream
To account softirq time cleanly in scheduler, we need to identify whether
softirq is invoked in ksoftirqd context or softirq at hardirq tail context.
Add PF_KSOFTIRQD for that purpose.
As all PF flag bits are currently taken, create space by moving one of the
infrequently used bits (PF_THREAD_BOUND) down in task_struct to be along
with some other state fields.
Signed-off-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
LKML-Reference: <1286237003-12406-4-git-send-email-venki@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/softirq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index 988dfbe6bbe8..267f7b763ebb 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -713,6 +713,7 @@ static int run_ksoftirqd(void * __bind_cpu) { set_current_state(TASK_INTERRUPTIBLE); + current->flags |= PF_KSOFTIRQD; while (!kthread_should_stop()) { preempt_disable(); if (!local_softirq_pending()) { |