tree ade4a3bcec477ced2780f1841e7c06f547effe84
parent a19428e5c3f4f39c302cb97b847dfd23613145c1
author Joe Perches <joe@perches.com> 1390871234 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1390885360 -0800

softirq: use ffs() in __do_softirq()

Possible speed improvement of __do_softirq() by using ffs() instead of
using a while loop with an & 1 test then single bit shift.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>