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| author |   Jiri Olsa <jolsa@redhat.com> | 2012-10-27 23:18:30 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-10-29 11:36:02 -0200 |
| commit | b2aff5f615793fa4c1313d82635b83cd7de8d9fd (patch) | |
| tree | 6110632337165978884cefb68710aebe3c72f152 /tools/perf/util/util.c | |
| parent | perf tools: Move BUILD_ID_SIZE into build-id object (diff) | |
| download | linux-dev-b2aff5f615793fa4c1313d82635b83cd7de8d9fd.tar.xz linux-dev-b2aff5f615793fa4c1313d82635b83cd7de8d9fd.zip | |
perf tools: Move hex2u64 into util object
Moving hex2u64 function into util object.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1351372712-21104-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/util.c')
| -rw-r--r-- | tools/perf/util/util.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 637b5cc54362..5906e8426cc7 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -166,6 +166,39 @@ size_t hex_width(u64 v) return n; } +static int hex(char ch) +{ + if ((ch >= '0') && (ch <= '9')) + return ch - '0'; + if ((ch >= 'a') && (ch <= 'f')) + return ch - 'a' + 10; + if ((ch >= 'A') && (ch <= 'F')) + return ch - 'A' + 10; + return -1; +} + +/* + * While we find nice hex chars, build a long_val. + * Return number of chars processed. + */ +int hex2u64(const char *ptr, u64 *long_val) +{ + const char *p = ptr; + *long_val = 0; + + while (*p) { + const int hex_val = hex(*p); + + if (hex_val < 0) + break; + + *long_val = (*long_val << 4) | hex_val; + p++; + } + + return p - ptr; +} + /* Obtain a backtrace and print it to stdout. */ #ifdef BACKTRACE_SUPPORT void dump_stack(void) |