diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2014-09-21 21:33:38 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-09-24 14:47:03 +0200 |
| commit | 3472eaa1f12e217e2b8b0ef658ff861b2308cbbd (patch) | |
| tree | c231d968cc0a6a696ae8f3e008f979899bf52b45 /kernel/sched/debug.c | |
| parent | 8651c65844e93af44554272b7e0d2b142837b244 (diff) | |
sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock()
1. read_lock(tasklist_lock) does not need to disable irqs.
2. ->mm != NULL is a common mistake, use PF_KTHREAD.
3. The second ->mm check can be simply removed.
4. task_rq_lock() looks better than raw_spin_lock(&p->pi_lock) +
__task_rq_lock().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20140921193338.GA28621@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/debug.c')
0 files changed, 0 insertions, 0 deletions