From: Alexey Budankov <alexey.budankov@linux.intel.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>, Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Andi Kleen <ak@linux.intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH v10 14/15] perf record: implement control commands handling
Date: Wed, 8 Jul 2020 10:55:16 +0300 [thread overview]
Message-ID: <e42423d5-23e2-aa12-6335-12997af357c4@linux.intel.com> (raw)
In-Reply-To: <4af50c95-36f6-7a61-5a22-2949970fe7a5@linux.intel.com>
Implement handling of 'enable' and 'disable' control commands
coming from control file descriptor.
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
---
tools/perf/builtin-record.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index cd1892c4844b..632e61fe70bd 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1527,6 +1527,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
bool disabled = false, draining = false;
int fd;
float ratio = 0;
+ enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED;
atexit(record__sig_exit);
signal(SIGCHLD, sig_handler);
@@ -1846,6 +1847,21 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
draining = true;
}
+ if (evlist__ctlfd_process(rec->evlist, &cmd) > 0) {
+ switch (cmd) {
+ case EVLIST_CTL_CMD_ENABLE:
+ pr_info(EVLIST_ENABLED_MSG);
+ break;
+ case EVLIST_CTL_CMD_DISABLE:
+ pr_info(EVLIST_DISABLED_MSG);
+ break;
+ case EVLIST_CTL_CMD_ACK:
+ case EVLIST_CTL_CMD_UNSUPPORTED:
+ default:
+ break;
+ }
+ }
+
/*
* When perf is starting the traced process, at the end events
* die with the process and we wait for that. Thus no need to
--
2.24.1
next prev parent reply other threads:[~2020-07-08 7:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 7:36 [PATCH v10 00/15] perf: support enable and disable commands in stat and record modes Alexey Budankov
2020-07-08 7:45 ` [PATCH v10 01/15] tools/libperf: avoid internal moving of fdarray fds Alexey Budankov
2020-07-08 7:46 ` [PATCH v10 02/15] tools/libperf: add flags to fdarray fds objects Alexey Budankov
2020-07-08 7:47 ` [PATCH v10 03/15] tools/libperf: avoid counting of nonfilterable fdarray fds Alexey Budankov
2020-07-08 7:47 ` [PATCH v10 04/15] perf evlist: introduce control file descriptors Alexey Budankov
2020-07-13 3:13 ` Namhyung Kim
2020-07-13 8:16 ` Alexey Budankov
2020-07-08 7:50 ` [PATCH v10 05/15] perf evlist: implement control command handling functions Alexey Budankov
2020-07-13 3:20 ` Namhyung Kim
2020-07-13 8:24 ` Alexey Budankov
2020-07-08 7:50 ` [PATCH v10 06/15] perf stat: factor out body of event handling loop for system wide Alexey Budankov
2020-07-08 7:51 ` [PATCH v10 07/15] perf stat: move target check to loop control statement Alexey Budankov
2020-07-08 7:51 ` [PATCH v10 08/15] perf stat: factor out body of event handling loop for fork case Alexey Budankov
2020-07-08 7:52 ` [PATCH v10 09/15] perf stat: factor out event handling loop into dispatch_events() Alexey Budankov
2020-07-08 7:53 ` [PATCH v10 10/15] perf stat: extend -D,--delay option with -1 value Alexey Budankov
2020-07-08 7:53 ` [PATCH v10 11/15] perf stat: implement control commands handling Alexey Budankov
2020-07-08 7:54 ` [PATCH v10 12/15] perf stat: introduce --control fd:ctl-fd[,ack-fd] options Alexey Budankov
2020-07-08 7:54 ` [PATCH v10 13/15] perf record: extend -D,--delay option with -1 value Alexey Budankov
2020-07-08 7:55 ` Alexey Budankov [this message]
2020-07-08 7:55 ` [PATCH v10 15/15] perf record: introduce --control fd:ctl-fd[,ack-fd] options Alexey Budankov
2020-07-12 21:12 ` [PATCH v10 00/15] perf: support enable and disable commands in stat and record modes Jiri Olsa
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