]> git.kernelconcepts.de Git - karo-tx-linux.git/commit
Eliminate lock_cpu_hotplug in kernel/schedc
authorGautham R Shenoy <ego@in.ibm.com>
Wed, 9 May 2007 09:34:04 +0000 (02:34 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 9 May 2007 19:30:51 +0000 (12:30 -0700)
commit5be9361cdff17fc76fa0c3e262ead94158555f16
treec0fd48bc0a39a2ba8a71677467f3d4e164b40f65
parentbaaca49f415b25fdbe2a8f3c22b39929e450fbfd
Eliminate lock_cpu_hotplug in kernel/schedc

Eliminate lock_cpu_hotplug from kernel/sched.c and use sched_hotcpu_mutex
instead to postpone a hotplug event.

In the migration_call hotcpu callback function, take sched_hotcpu_mutex
while handling the event CPU_LOCK_ACQUIRE and release it while handling
CPU_LOCK_RELEASE event.

[akpm@linux-foundation.org: fix deadlock]
Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/sched.c