Messages in this thread | | | Date | Fri, 21 Aug 2015 10:55:00 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH V4 1/7] perf,tools: introduce generic FEAT for CPU attributes |
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On Tue, Aug 18, 2015 at 10:16:35AM -0400, Kan Liang wrote:
SNIP
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c > index 179b2bd..0a06fb8 100644 > --- a/tools/perf/util/header.c > +++ b/tools/perf/util/header.c > @@ -862,6 +862,23 @@ write_it: > return do_write_string(fd, buffer); > } > > +#define MAX_FREQ_TAG_STR "max_freq" > + > +static int write_cpu_attributes(int fd, struct perf_header *h __maybe_unused, > + struct perf_evlist *evlist __maybe_unused) > +{ > + u64 freq; > + int ret; > + > + freq = get_cpu_max_freq(); > + > + ret = do_write_string(fd, MAX_FREQ_TAG_STR); > + if (ret) > + return ret;
why not store just the tag number? PERF_HEADER_CPU_MAX_FREQ
jirka
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