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| author |   Jiri Olsa <jolsa@kernel.org> | 2019-10-07 14:53:22 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-10-10 12:18:00 -0300 |
| commit | 0b5ea10d4c312f5b17af9d09187efb9418517bec (patch) | |
| tree | fd1e8fbeb7caaca2d3bd22d6a15bc6db150077ba /tools/perf/lib | |
| parent | libperf: Adopt perf_evlist__mmap()/munmap() from tools/perf (diff) | |
| download | linux-dev-0b5ea10d4c312f5b17af9d09187efb9418517bec.tar.xz linux-dev-0b5ea10d4c312f5b17af9d09187efb9418517bec.zip | |
libperf: Introduce perf_evlist__mmap_ops()
To be able to pass specific callbacks to evlist's mmap.
There will be a specific call to this function from perf's
evlist__mmap() and libperf's perf_evlist__mmap() functions in following
changes.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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/20191007125344.14268-15-jolsa@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/lib')
| -rw-r--r-- | tools/perf/lib/evlist.c | 24 | ||||
| -rw-r--r-- | tools/perf/lib/include/internal/evlist.h | 8 |
2 files changed, 26 insertions, 6 deletions
diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c index 250ad5752589..88d63f5cd9ca 100644 --- a/tools/perf/lib/evlist.c +++ b/tools/perf/lib/evlist.c @@ -472,12 +472,16 @@ out_unmap: return -1; } -int perf_evlist__mmap(struct perf_evlist *evlist, int pages) +int perf_evlist__mmap_ops(struct perf_evlist *evlist, + struct perf_evlist_mmap_ops *ops, + struct perf_mmap_param *mp) { struct perf_evsel *evsel; const struct perf_cpu_map *cpus = evlist->cpus; const struct perf_thread_map *threads = evlist->threads; - struct perf_mmap_param mp; + + if (!ops) + return -EINVAL; if (!evlist->mmap) evlist->mmap = perf_evlist__alloc_mmap(evlist, false); @@ -491,13 +495,21 @@ int perf_evlist__mmap(struct perf_evlist *evlist, int pages) return -ENOMEM; } + if (perf_cpu_map__empty(cpus)) + return mmap_per_thread(evlist, mp); + + return mmap_per_cpu(evlist, mp); +} + +int perf_evlist__mmap(struct perf_evlist *evlist, int pages) +{ + struct perf_mmap_param mp; + struct perf_evlist_mmap_ops ops; + evlist->mmap_len = (pages + 1) * page_size; mp.mask = evlist->mmap_len - page_size - 1; - if (perf_cpu_map__empty(cpus)) - return mmap_per_thread(evlist, &mp); - - return mmap_per_cpu(evlist, &mp); + return perf_evlist__mmap_ops(evlist, &ops, &mp); } void perf_evlist__munmap(struct perf_evlist *evlist) diff --git a/tools/perf/lib/include/internal/evlist.h b/tools/perf/lib/include/internal/evlist.h index 4438a19ceba3..e5f092ff6202 100644 --- a/tools/perf/lib/include/internal/evlist.h +++ b/tools/perf/lib/include/internal/evlist.h @@ -11,6 +11,7 @@ struct perf_cpu_map; struct perf_thread_map; +struct perf_mmap_param; struct perf_evlist { struct list_head entries; @@ -26,10 +27,17 @@ struct perf_evlist { struct perf_mmap *mmap_ovw; }; +struct perf_evlist_mmap_ops { +}; + int perf_evlist__alloc_pollfd(struct perf_evlist *evlist); int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd, void *ptr, short revent); +int perf_evlist__mmap_ops(struct perf_evlist *evlist, + struct perf_evlist_mmap_ops *ops, + struct perf_mmap_param *mp); + /** * __perf_evlist__for_each_entry - iterate thru all the evsels * @list: list_head instance to iterate |