Eliminate lock_cpu_hotplug in kernel/schedc

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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>

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Gautham R Shenoy 2007-05-09 02:34:04 -07:00 • committed by Linus Torvalds

parent baaca49f41

commit 5be9361cdf

1 changed files with 18 additions and 10 deletions

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kernel/sched.c

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