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libperf: Adopt perf_evlist__mmap()/munmap() from tools/perf

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Add libperf's version of perf_evlist__mmap()/munmap() functions and
exporting them in the perf/evlist.h header.

It's the backbone of what we have in perf code. The following changes
will add needed callbacks and then we'll finally switch the perf code to
use libperf's version.

Add mmap/mmap_ovw 'struct perf_mmap' object arrays to hold maps for
libperf's evlist.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191007125344.14268-14-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2019-10-07 14:53:21 +02:00
committed by Arnaldo Carvalho de Melo
parent 151ed5d70d
commit d1a177595b
4 changed files with 243 additions and 0 deletions
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2
tools/perf/lib/include/internal/evlist.h
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@@ -22,6 +22,8 @@ struct perf_evlist {
size_t mmap_len;
struct fdarray pollfd;
struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
struct perf_mmap *mmap;
struct perf_mmap *mmap_ovw;
};
int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);