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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2012-03-11 16:59:30 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-03-11 16:59:28 +0100 |
| commit | 2215011dd9c1b01f1fc430620ed31f2baad267c3 (patch) | |
| tree | 8674b35cae6475d48cb76cc36afe21bd75ab72c8 | |
| parent | [S390] zfcpdump: Implement async sdias event processing (diff) | |
| download | linux-2215011dd9c1b01f1fc430620ed31f2baad267c3.tar.xz linux-2215011dd9c1b01f1fc430620ed31f2baad267c3.zip | |
[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>
| -rw-r--r-- | arch/s390/include/asm/hardirq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/hardirq.h b/arch/s390/include/asm/hardirq.h index e4155d3eb2cb..510ba9ef4248 100644 --- a/arch/s390/include/asm/hardirq.h +++ b/arch/s390/include/asm/hardirq.h @@ -18,6 +18,7 @@ #define __ARCH_IRQ_STAT #define __ARCH_HAS_DO_SOFTIRQ +#define __ARCH_IRQ_EXIT_IRQS_DISABLED #define HARDIRQ_BITS 8 |