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Subject[PATCH 16/24] perf daemon: Use control to stop session
Date
Using 'stop' control command to stop perf record session.
If that fails, falling back to current SIGTERM/SIGKILL pair.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/builtin-daemon.c | 56 ++++++++++++++++++++++++++++++-------
1 file changed, 46 insertions(+), 10 deletions(-)

diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c
index a5a71e0a706c..92dba933027d 100644
--- a/tools/perf/builtin-daemon.c
+++ b/tools/perf/builtin-daemon.c
@@ -821,11 +821,25 @@ static int setup_client_socket(struct daemon *daemon)

static void session__kill(struct session *session, struct daemon *daemon)
{
- session__signal(session, SIGTERM);
- if (session__wait(session, daemon, 10)) {
- session__signal(session, SIGKILL);
- session__wait(session, daemon, 10);
- }
+ int how = 0;
+
+ do {
+ switch (how) {
+ case 0:
+ session__control(session, "stop", false);
+ break;
+ case 1:
+ session__signal(session, SIGTERM);
+ break;
+ case 2:
+ session__signal(session, SIGKILL);
+ break;
+ default:
+ break;
+ }
+ how++;
+
+ } while (session__wait(session, daemon, 10));
}

static void daemon__signal(struct daemon *daemon, int sig)
@@ -850,13 +864,35 @@ static void session__remove(struct session *session)
session__free(session);
}

+static void daemon__stop(struct daemon *daemon)
+{
+ struct session *session;
+
+ list_for_each_entry(session, &daemon->sessions, list)
+ session__control(session, "stop", false);
+}
+
static void daemon__kill(struct daemon *daemon)
{
- daemon__signal(daemon, SIGTERM);
- if (daemon__wait(daemon, 10)) {
- daemon__signal(daemon, SIGKILL);
- daemon__wait(daemon, 10);
- }
+ int how = 0;
+
+ do {
+ switch (how) {
+ case 0:
+ daemon__stop(daemon);
+ break;
+ case 1:
+ daemon__signal(daemon, SIGTERM);
+ break;
+ case 2:
+ daemon__signal(daemon, SIGKILL);
+ break;
+ default:
+ break;
+ }
+ how++;
+
+ } while (daemon__wait(daemon, 10));
}

static void __daemon__free(struct daemon *daemon)
--
2.29.2
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