linux

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History

Mikulas Patocka 1bf11c5353 percpu-rw-semaphores: use rcu_read_lock_sched

Use rcu_read_lock_sched / rcu_read_unlock_sched / synchronize_sched
instead of rcu_read_lock / rcu_read_unlock / synchronize_rcu.

This is an optimization. The RCU-protected region is very small, so
there will be no latency problems if we disable preempt in this region.

So we use rcu_read_lock_sched / rcu_read_unlock_sched that translates
to preempt_disable / preempt_disable. It is smaller (and supposedly
faster) than preemptible rcu_read_lock / rcu_read_unlock.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-10-28 10:59:36 -07:00

acpi

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

2012-10-08 07:14:06 +09:00

asm-generic

UAPI: Remove empty non-UAPI Kbuild files

2012-10-17 12:31:15 +01:00

clocksource

arm64: Generic timers support

2012-09-17 13:42:20 +01:00

crypto

Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux