diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-05-11 01:22:45 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 11:29:34 -0400 |
commit | e1fa2e136ff64a3814a98c03d46320b9e80d29c8 (patch) | |
tree | 14620d6f3361274139cccded4b38dc7e0347a593 /include | |
parent | 2acdb1694494eb6f17b44b2b3065879af32d0d46 (diff) |
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')
-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); | |||
48 | 48 | ||
49 | #define irqs_disabled() (local_get_flags() == 0) | 49 | #define irqs_disabled() (local_get_flags() == 0) |
50 | 50 | ||
51 | #define hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) | 51 | #define __hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) |
52 | #define hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) | 52 | #define __hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) |
53 | |||
54 | #define hard_irq_disable() \ | ||
55 | do { \ | ||
56 | __hard_irq_disable(); \ | ||
57 | get_paca()->soft_enabled = 0; \ | ||
58 | get_paca()->hard_enabled = 0; \ | ||
59 | } while(0) | ||
53 | 60 | ||
54 | #else | 61 | #else |
55 | 62 | ||