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author | Ingo Molnar <mingo@elte.hu> | 2009-06-06 20:33:43 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-06-06 20:33:43 +0200 |
commit | 864709302a80f26fa9da3be5b47304f0b8bae192 (patch) | |
tree | 8c2bab78f141fe43a38914bd3e3aae0a88f958e5 /tools/perf/util/string.c | |
parent | 75b5032212641f6d38ac041416945e70da833b68 (diff) | |
download | talos-op-linux-864709302a80f26fa9da3be5b47304f0b8bae192.tar.gz talos-op-linux-864709302a80f26fa9da3be5b47304f0b8bae192.zip |
perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/
Several people have suggested that 'perf' has become a full-fledged
tool that should be moved out of Documentation/. Move it to the
(new) tools/ directory.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/string.c')
-rw-r--r-- | tools/perf/util/string.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c new file mode 100644 index 000000000000..ec33c0c7f4e2 --- /dev/null +++ b/tools/perf/util/string.c @@ -0,0 +1,34 @@ +#include "string.h" + +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; +} |