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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2007-10-16 23:30:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:43:03 -0700 |
| commit | f7b4cddcc5aca03e80e357360c9424dfba5056c2 (patch) | |
| tree | af2eae61dcd0311a4c51dc7398e9d0f049f37367 /kernel/time.c | |
| parent | cf7a44168d743ca97863b7f34ed42a45fd7b5ab0 (diff) | |
| download | linux-f7b4cddcc5aca03e80e357360c9424dfba5056c2.tar.bz2 | |
do CPU_DEAD migrating under read_lock(tasklist) instead of write_lock_irq(tasklist)
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).
This all is a preparation for the futher changes proposed by Cliff Wickman, see
http://marc.info/?t=117327786100003
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Cliff Wickman <cpw@sgi.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/time.c')
0 files changed, 0 insertions, 0 deletions