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| author | Vegard Nossum <vegard.nossum@gmail.com> | 2008-11-21 01:30:36 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-21 08:57:28 +0100 |
| commit | 957ad0166e9f76a8561dafa5e14ef5bd3f5e9a3b (patch) | |
| tree | 551a3e47438f88769f0fb2425ad4ad4b4df557cf | |
| parent | fc02e90c34bacd5d7bc77b832c65a8f06e1bd60e (diff) | |
sched: update comment for move_task_off_dead_cpu
Impact: cleanup
This commit:
commit f7b4cddcc5aca03e80e357360c9424dfba5056c2
Author: Oleg Nesterov <oleg@tv-sign.ru>
Date: Tue Oct 16 23:30:56 2007 -0700
do CPU_DEAD migrating under read_lock(tasklist) instead of write_lock_irq(ta
Currently move_task_off_dead_cpu() is called under
write_lock_irq(tasklist). This means it can't use task_lock() which is
needed to improve migrating to take task's ->cpuset into account.
Change the code to call move_task_off_dead_cpu() with irqs enabled, and
change migrate_live_tasks() to use read_lock(tasklist).
...forgot to update the comment in front of move_task_off_dead_cpu.
Reference: http://lkml.org/lkml/2008/6/23/135
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/sched.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 93bfb086e60..a6085d5166d 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -6094,7 +6094,6 @@ static int __migrate_task_irq(struct task_struct *p, int src_cpu, int dest_cpu) /* * Figure out where task on dead CPU should go, use force if necessary. - * NOTE: interrupts should be disabled by the caller */ static void move_task_off_dead_cpu(int dead_cpu, struct task_struct *p) { |