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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-20 04:02:01 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-20 04:02:01 +0400 |
| commit | 10ce3cc919f50c2043b41ca968b43c26a3672600 (patch) | |
| tree | ea409366a5208aced495bc0516a08b81fd43222e /tools/perf/util/util.h | |
| parent | 24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd (diff) | |
| parent | 5c6a7a62c130afef3d61c1dee153012231ff5cd9 (diff) | |
| download | linux-10ce3cc919f50c2043b41ca968b43c26a3672600.tar.xz | |
Merge branch 'next' into for-linus
Diffstat (limited to 'tools/perf/util/util.h')
| -rw-r--r-- | tools/perf/util/util.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 0128906bac88..ecf9898169c8 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -40,7 +40,6 @@ #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) #define _ALL_SOURCE 1 -#define _GNU_SOURCE 1 #define _BSD_SOURCE 1 #define HAS_BOOL @@ -242,7 +241,22 @@ int strtailcmp(const char *s1, const char *s2); unsigned long convert_unit(unsigned long value, char *unit); int readn(int fd, void *buf, size_t size); +struct perf_event_attr; + +void event_attr_init(struct perf_event_attr *attr); + #define _STR(x) #x #define STR(x) _STR(x) +/* + * Determine whether some value is a power of two, where zero is + * *not* considered a power of two. + */ + +static inline __attribute__((const)) +bool is_power_of_2(unsigned long n) +{ + return (n != 0 && ((n & (n - 1)) == 0)); +} + #endif |