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| author |   Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> | 2022-01-17 21:34:24 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-02-10 16:25:37 -0300 |
| commit | 6fbe4f48ad59d97d78ab778158b4c48a7aba3195 (patch) | |
| tree | 506a1a2010138f0302734b4ba12df6fbe0dc14ff | |
| parent | perf record: Introduce thread specific data array (diff) | |
| download | linux-dev-6fbe4f48ad59d97d78ab778158b4c48a7aba3195.tar.xz linux-dev-6fbe4f48ad59d97d78ab778158b4c48a7aba3195.zip | |
perf record: Introduce function to propagate control commands
Introduce evlist__ctlfd_update() function to propagate external control
commands to global evlist object.
Reviewed-by: Riccardo Mancini <rickyman7@gmail.com>
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Riccardo Mancini <rickyman7@gmail.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Namhyung Kim <namhyung@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/7df52c9816b13c74897b9e518128b29a391462fe.1642440724.git.alexey.v.bayduraev@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/evlist.c | 16 | ||||
| -rw-r--r-- | tools/perf/util/evlist.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index eaad04e1672a..8134d45e2164 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -2139,6 +2139,22 @@ int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd) return err; } +int evlist__ctlfd_update(struct evlist *evlist, struct pollfd *update) +{ + int ctlfd_pos = evlist->ctl_fd.pos; + struct pollfd *entries = evlist->core.pollfd.entries; + + if (!evlist__ctlfd_initialized(evlist)) + return 0; + + if (entries[ctlfd_pos].fd != update->fd || + entries[ctlfd_pos].events != update->events) + return -1; + + entries[ctlfd_pos].revents = update->revents; + return 0; +} + struct evsel *evlist__find_evsel(struct evlist *evlist, int idx) { struct evsel *evsel; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 64cba56fbc74..a21daaa5fc1b 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -410,6 +410,7 @@ void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close); int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack); int evlist__finalize_ctlfd(struct evlist *evlist); bool evlist__ctlfd_initialized(struct evlist *evlist); +int evlist__ctlfd_update(struct evlist *evlist, struct pollfd *update); int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd); int evlist__ctlfd_ack(struct evlist *evlist); |