Re: [PATCH 05/37] perf tools: Create separate mmap for dummy tracking event

[Jiri Olsa]

On Wed, Dec 24, 2014 at 04:15:01PM +0900, Namhyung Kim wrote:
> When multi file support is enabled, a dummy tracking event will be
> used to track metadata (like task, comm and mmap events) for a session
> and actual samples will be recorded in separate files.
> 
> Provide separate mmap to the dummy tracking event.  The size is fixed
> to 128KiB (+ 1 page) as the event rate will be lower than samples.  I
> originally wanted to use a single mmap for this but cross-cpu sharing
> is prohibited so it's per-cpu (or per-task) like normal mmaps.

maybe this needs to be applied after next patch?
  perf tools: Introduce perf_evlist__mmap_multi

I'm getting compile error:

[jolsa@krava perf]$ make JOBS=1
  BUILD:   Doing 'make -j1' parallel build
  CC       util/evlist.o
util/evlist.c: In function âperf_evlist__mmap_per_evselâ:
util/evlist.c:937:9: error: âstruct mmap_paramsâ has no member named âtrackâ
   if (mp->track && perf_evsel__is_dummy_tracking(evsel)) {
         ^
util/evlist.c: In function âperf_evlist__mmapâ:
util/evlist.c:1092:62: error: âuse_track_mmapâ undeclared (first use in this function)
  if (evlist->mmap == NULL && perf_evlist__alloc_mmap(evlist, use_track_mmap) < 0)
                                                              ^
util/evlist.c:1092:62: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [util/evlist.o] Error 1
make: *** [all] Error 2

jirka
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