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author | Andi Kleen <ak@linux.intel.com> | 2019-11-20 16:15:15 -0800 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-11-29 12:20:45 -0300 |
commit | a8cbe40fe9f4ba499cc60b8b6a6851c2c1963797 (patch) | |
tree | eb6a05ec985d8ecc82399d23cad57ce5a22edf86 /tools/perf/util/evlist.c | |
parent | a2408a70368ade9c99de27da78d49416313b8833 (diff) | |
download | linux-a8cbe40fe9f4ba499cc60b8b6a6851c2c1963797.tar.gz linux-a8cbe40fe9f4ba499cc60b8b6a6851c2c1963797.tar.bz2 linux-a8cbe40fe9f4ba499cc60b8b6a6851c2c1963797.zip |
perf evsel: Add iterator to iterate over events ordered by CPU
Add some common code that is needed to iterate over all events
in CPU order. Used in followon patches
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lore.kernel.org/lkml/20191121001522.180827-6-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r-- | tools/perf/util/evlist.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index fdce590d2278..dae6e846b2f8 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -342,6 +342,38 @@ static int perf_evlist__nr_threads(struct evlist *evlist, return perf_thread_map__nr(evlist->core.threads); } +void evlist__cpu_iter_start(struct evlist *evlist) +{ + struct evsel *pos; + + /* + * Reset the per evsel cpu_iter. This is needed because + * each evsel's cpumap may have a different index space, + * and some operations need the index to modify + * the FD xyarray (e.g. open, close) + */ + evlist__for_each_entry(evlist, pos) + pos->cpu_iter = 0; +} + +bool evsel__cpu_iter_skip_no_inc(struct evsel *ev, int cpu) +{ + if (ev->cpu_iter >= ev->core.cpus->nr) + return true; + if (cpu >= 0 && ev->core.cpus->map[ev->cpu_iter] != cpu) + return true; + return false; +} + +bool evsel__cpu_iter_skip(struct evsel *ev, int cpu) +{ + if (!evsel__cpu_iter_skip_no_inc(ev, cpu)) { + ev->cpu_iter++; + return false; + } + return true; +} + void evlist__disable(struct evlist *evlist) { struct evsel *pos; |