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    Subject[PATCH v11 04/15] perf evlist: introduce control file descriptors
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    Define and initialize control file descriptors.

    Signed-off-by: Alexey Budankov <alexey.budankov@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

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