[PATCH 52/75] perf top: Set the 'session_done' volatile variable when exiting

Arnaldo Carvalho de Melo
2018-12-06T21:33:14Z

From: Jiri Olsa <jolsa@kernel.org>

So we can get out of hist processing ASAP on user request.

Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/n/tip-r8aufbgbixr2f85s3wcoaw9v@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-top.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index aad58643102e..50ec01eb7f57 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -577,6 +577,12 @@ static void perf_top__sort_new_samples(void *arg)
perf_top__reset_sample_counters(t);
}

+static void stop_top(void)
+{
+ session_done = 1;
+ done = 1;
+}
+
static void *display_thread_tui(void *arg)
{
struct perf_evsel *pos;
@@ -613,13 +619,13 @@ static void *display_thread_tui(void *arg)
!top->record_opts.overwrite,
&top->annotation_opts);

- done = 1;
+ stop_top();
return NULL;
}

static void display_sig(int sig __maybe_unused)
{
- done = 1;
+ stop_top();
}

static void display_setup_sig(void)
@@ -672,7 +678,7 @@ static void *display_thread(void *arg)

if (perf_top__handle_keypress(top, c))
goto repeat;
- done = 1;
+ stop_top();
}
}

--
2.19.2