Messages in this thread Patch in this message | | | From | Frederic Weisbecker <> | Subject | [PATCH 3/8] irq: Optimize call to softirq on hardirq exit | Date | Thu, 26 Sep 2013 18:24:41 +0200 |
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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.
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> --- kernel/softirq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/softirq.c b/kernel/softirq.c index 26ee727..17c5cd2 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(); } -- 1.8.3.1
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