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perf evlist: Introduce control file descriptors 

Define and initialize control file descriptors.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/0dd4f544-2610-96d6-1bdb-6582bdc3dc2c@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Alexey Budankov 2020-07-17 10:00:47 +03:00 committed by Arnaldo Carvalho de Melo
parent d3da1f0900
commit 8ab705b540
2 changed files with 8 additions and 0 deletions
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3
tools/perf/util/evlist.c
View File

@ -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)

5
tools/perf/util/evlist.h
View File

@ -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 {