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arch: Implement local64_t

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On 64bit, local_t is of size long, and thus we make local64_t an alias.
On 32bit, we fall back to atomic64_t. (architecture can provide optimized
32-bit version)

(This new facility is to be used by perf events optimizations.)

Signed-off-by: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2010-05-21 14:05:13 +02:00 • committed by Ingo Molnar
commit 1996bda2a4
23 changed files with 118 additions and 0 deletions
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arch/alpha/include/asm/local64.h Normal file
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#include <asm-generic/local64.h>