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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-05-11 07:22:45 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 17:29:34 +0200 |
| commit | e1fa2e136ff64a3814a98c03d46320b9e80d29c8 (patch) | |
| tree | 14620d6f3361274139cccded4b38dc7e0347a593 /include/asm-powerpc | |
| parent | synclink_gt: add compat_ioctl (diff) | |
| download | linux-e1fa2e136ff64a3814a98c03d46320b9e80d29c8.tar.xz linux-e1fa2e136ff64a3814a98c03d46320b9e80d29c8.zip | |
powerpc: fixup hard_irq_disable semantics
This patch renames the raw hard_irq_{enable,disable} into
__hard_irq_{enable,disable} and introduces a higher level hard_irq_disable()
function that can be used by any code to enforce that IRQs are fully disabled,
not only lazy disabled.
The difference with the __ versions is that it will update some per-processor
fields so that the kernel keeps track and properly re-enables them in the next
local_irq_disable();
This prepares powerpc for my next patch that introduces hard_irq_disable()
generically.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/hw_irq.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/asm-powerpc/hw_irq.h b/include/asm-powerpc/hw_irq.h index 9e4dd98eb220..a7b60bf639e0 100644 --- a/include/asm-powerpc/hw_irq.h +++ b/include/asm-powerpc/hw_irq.h @@ -48,8 +48,15 @@ extern void iseries_handle_interrupts(void); #define irqs_disabled() (local_get_flags() == 0) -#define hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) -#define hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) +#define __hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) +#define __hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) + +#define hard_irq_disable() \ + do { \ + __hard_irq_disable(); \ + get_paca()->soft_enabled = 0; \ + get_paca()->hard_enabled = 0; \ + } while(0) #else |