Em Mon, Dec 14, 2020 at 12:00:19AM +0100, Jiri Olsa escreveu:
> On Thu, Dec 10, 2020 at 03:13:01PM +0900, Namhyung Kim wrote:
> > The --header-only checks file header and prints the feature data. But
> > as pipe mode doesn't have it in the header it prints almost nothing.
> > Change it to process first few records until it founds HEADER_FEATURE.
> >
> > Before:
> > $ perf record -o- true | perf report -i- --header-only
> > # ========
> > # captured on : Thu Dec 10 14:34:59 2020
> > # header version : 1
> > # data offset : 0
> > # data size : 0
> > # feat offset : 0
> > # ========
> > #
> >
> > After:
> > $ perf record -o- true | perf report -i- --header-only
> > # ========
> > # captured on : Thu Dec 10 14:49:11 2020
> > # header version : 1
> > # data offset : 0
> > # data size : 0
> > # feat offset : 0
> > # ========
> > #
> > # hostname : balhae
> > # os release : 5.7.17-1xxx
> > # perf version : 5.10.rc6.gdb0ea13cc741
> > # arch : x86_64
> > # nrcpus online : 8
> > # nrcpus avail : 8
> > # cpudesc : Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz
> > # cpuid : GenuineIntel,6,142,12
> > # total memory : 16158916 kB
> > # cmdline : perf record -o- true
> > # event : name = cycles, , id = { 81, 82, 83, 84, 85, 86, 87, 88 }, size
> > = 120, ...
> > # CPU_TOPOLOGY info available, use -I to display
> > # NUMA_TOPOLOGY info available, use -I to display
> > # pmu mappings: intel_pt = 9, intel_bts = 8, software = 1, power = 20,
> > uprobe = 7, ...
> > # time of first sample : 0.000000
> > # time of last sample : 0.000000
> > # sample duration : 0.000 ms
> > # MEM_TOPOLOGY info available, use -I to display
> > # cpu pmu capabilities: branches=32, max_precise=3, pmu_name=skylake
> >
> > Signed-off-by: Namhyung Kim <namhy...@kernel.org>
>
> Acked-by: Jiri Olsa <jo...@redhat.com>
Thanks, applied.
- Arnaldo
