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authorLinus Torvalds <torvalds@g5.osdl.org>2006-09-30 08:37:55 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-30 08:37:55 -0700
commit369aa8395a5dcc89230f1de5459124c4b0db9fca (patch)
treed95edf4c52e343e2080427ad153da051ea52eee6 /include/linux
parentbf603625660b1742004bf86432ce3c210d14d4fd (diff)
parentc84ef5305930d19bdd6cd576b3a3a73786a82e57 (diff)
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: [PATCH] Use early clobber in semaphores [PATCH] Define vsyscall cache as blob to make clearer that user space shouldn't use it [PATCH] Re-positioning the bss segment [PATCH] Use ARRAY_SIZE in setup.c [PATCH] i386: replace intermediate array-size definitions with ARRAY_SIZE() [PATCH] x86: Clean up x86 NMI sysctls [PATCH] Refactor some duplicated code in mpparse.c [PATCH] Document iommu=panic [PATCH] Fix broken indentation in iommu_setup [PATCH] Allow disabling DAC using command line options [PATCH] Add proper sparse __user casts to __copy_to_user_inatomic [PATCH] i386: Update defconfig [PATCH] Update defconfig
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/getcpu.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/getcpu.h b/include/linux/getcpu.h
index 031ed3780e4..c7372d7a97b 100644
--- a/include/linux/getcpu.h
+++ b/include/linux/getcpu.h
@@ -1,16 +1,18 @@
#ifndef _LINUX_GETCPU_H
#define _LINUX_GETCPU_H 1
-/* Cache for getcpu() to speed it up. Results might be upto a jiffie
+/* Cache for getcpu() to speed it up. Results might be a short time
out of date, but will be faster.
+
User programs should not refer to the contents of this structure.
- It is only a cache for vgetcpu(). It might change in future kernels.
+ I repeat they should not refer to it. If they do they will break
+ in future kernels.
+
+ It is only a private cache for vgetcpu(). It will change in future kernels.
The user program must store this information per thread (__thread)
If you want 100% accurate information pass NULL instead. */
struct getcpu_cache {
- unsigned long t0;
- unsigned long t1;
- unsigned long res[4];
+ unsigned long blob[128 / sizeof(long)];
};
#endif