Commit 2215011d authored Mar 11, 2012 by Heiko Carstens Committed by Martin Schwidefsky Mar 11, 2012

[S390] irq: set __ARCH_IRQ_EXIT_IRQS_DISABLED



Set __ARCH_IRQ_EXIT_IRQS_DISABLED in order to optimize irq_exit() a
bit, since we call __do_softirq() instead of do_softirq().
This saves several needless checks, pointless interrupt disabling
and an extra branch.
If do_softirq() gets called from process context we still switch to
the async stack.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent e3c652b5

arch/s390/include/asm/hardirq.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@

		#define __ARCH_IRQ_STAT
		#define __ARCH_HAS_DO_SOFTIRQ
		#define __ARCH_IRQ_EXIT_IRQS_DISABLED

		#define HARDIRQ_BITS 8