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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2013-09-24 16:39:41 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-10-01 12:53:25 +0200 |
| commit | be6e1016440860fc4ec098b2d0aed3d0397b5d6e (patch) | |
| tree | 6de1ac73642c9c54e7207c5b4fc3e751d20a1341 /kernel/softirq.c | |
| parent | 7d65f4a6553203da6a22097821d151fbbe7e4956 (diff) | |
| download | linux-stable-be6e1016440860fc4ec098b2d0aed3d0397b5d6e.tar.gz linux-stable-be6e1016440860fc4ec098b2d0aed3d0397b5d6e.tar.bz2 linux-stable-be6e1016440860fc4ec098b2d0aed3d0397b5d6e.zip | |
irq: Optimize call to softirq on hardirq exit
Before processing softirqs on hardirq exit, we already
do the check for pending softirqs while hardirqs are
guaranteed to be disabled.
So we can take a shortcut and safely jump to the arch
specific implementation directly.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@au1.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Mackerras <paulus@au1.ibm.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/softirq.c')
| -rw-r--r-- | kernel/softirq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index 26ee72725d29..17c5cd2e3dae 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -335,7 +335,7 @@ static inline void invoke_softirq(void) * in its own stack to prevent from any overrun on top * of a potentially deep task stack. */ - do_softirq(); + do_softirq_own_stack(); } else { wakeup_softirqd(); } |