powerpc: Tell about irq stack coverage
authorFrederic Weisbecker <fweisbec@gmail.com>
Tue, 24 Sep 2013 15:18:36 +0000 (17:18 +0200)
committerFrederic Weisbecker <fweisbec@gmail.com>
Tue, 1 Oct 2013 10:53:29 +0000 (12:53 +0200)
commit62d26c8200a8382e1c67419ca3aff78d37898cc5
tree12fadb3bc138f0545196dfa138103bbff1f8cf10
parenta2cd11f7d58a3a5390ee4cbcd8cff634a4d59173
powerpc: Tell about irq stack coverage

Now that powerpc runs irq_exit() under the irq stack,
let the softirq core know about that so that we spare
the needless stack switch on irq exit's softirq processing.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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>
arch/powerpc/Kconfig