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| author | Ingo Molnar <mingo@elte.hu> | 2009-01-05 07:53:39 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-05 07:53:39 -0500 |
| commit | 5359c32eb7402124abc9964d5d53639fe0739cea (patch) | |
| tree | d77b6967fe8420678bb9d1d936855ac0699c196a /include/linux/compiler-gcc4.h | |
| parent | 8916edef5888c5d8fe283714416a9ca95b4c3431 (diff) | |
| parent | fe0bdec68b77020281dc814805edfe594ae89e0f (diff) | |
Merge branch 'linus' into sched/urgent
Diffstat (limited to 'include/linux/compiler-gcc4.h')
| -rw-r--r-- | include/linux/compiler-gcc4.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 974f5b7bb205..09992718f9e8 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h | |||
| @@ -2,8 +2,10 @@ | |||
| 2 | #error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead." | 2 | #error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead." |
| 3 | #endif | 3 | #endif |
| 4 | 4 | ||
| 5 | /* These definitions are for GCC v4.x. */ | 5 | /* GCC 4.1.[01] miscompiles __weak */ |
| 6 | #include <linux/compiler-gcc.h> | 6 | #if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1 |
| 7 | # error Your version of gcc miscompiles the __weak directive | ||
| 8 | #endif | ||
| 7 | 9 | ||
| 8 | #define __used __attribute__((__used__)) | 10 | #define __used __attribute__((__used__)) |
| 9 | #define __must_check __attribute__((warn_unused_result)) | 11 | #define __must_check __attribute__((warn_unused_result)) |
| @@ -16,7 +18,7 @@ | |||
| 16 | */ | 18 | */ |
| 17 | #define uninitialized_var(x) x = x | 19 | #define uninitialized_var(x) x = x |
| 18 | 20 | ||
| 19 | #if !(__GNUC__ == 4 && __GNUC_MINOR__ < 3) | 21 | #if __GNUC_MINOR__ >= 3 |
| 20 | /* Mark functions as cold. gcc will assume any path leading to a call | 22 | /* Mark functions as cold. gcc will assume any path leading to a call |
| 21 | to them will be unlikely. This means a lot of manual unlikely()s | 23 | to them will be unlikely. This means a lot of manual unlikely()s |
| 22 | are unnecessary now for any paths leading to the usual suspects | 24 | are unnecessary now for any paths leading to the usual suspects |
