Introduce evlist__ctlfd_update() function to propagate external control
commands to global evlist object.
Acked-by: Andi Kleen <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Reviewed-by: Riccardo Mancini <[email protected]>
Tested-by: Riccardo Mancini <[email protected]>
Signed-off-by: Alexey Bayduraev <[email protected]>
---
tools/perf/util/evlist.c | 16 ++++++++++++++++
tools/perf/util/evlist.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 6e88d404b5b3..48a865221636 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -2131,6 +2131,22 @@ 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);
--
2.19.0