[PATCH v11 04/15] perf evlist: introduce control file descriptors

[Alexey Budankov]

Define and initialize control file descriptors.

Signed-off-by: Alexey Budankov <alexey.budan...@linux.intel.com>
---
 tools/perf/util/evlist.c | 3 +++
 tools/perf/util/evlist.h | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index bcbe0cb8482e..36eb50aba1f5 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -63,6 +63,9 @@ void evlist__init(struct evlist *evlist, struct perf_cpu_map 
*cpus,
        perf_evlist__set_maps(&evlist->core, cpus, threads);
        evlist->workload.pid = -1;
        evlist->bkw_mmap_state = BKW_MMAP_NOTREADY;
+       evlist->ctl_fd.fd = -1;
+       evlist->ctl_fd.ack = -1;
+       evlist->ctl_fd.pos = -1;
 }
 
 struct evlist *evlist__new(void)
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 38901c0d1599..fe1fe40e044b 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -74,6 +74,11 @@ struct evlist {
                pthread_t               th;
                volatile int            done;
        } thread;
+       struct {
+               int     fd;     /* control file descriptor */
+               int     ack;    /* ack file descriptor for control commands */
+               int     pos;    /* index at evlist core object to check signals 
*/
+       } ctl_fd;
 };
 
 struct evsel_str_handler {
-- 
2.24.1