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Date: Mon, 13 Jun 2022 17:46:04 +0800
From: Yang Jihong <yangjihong1@...wei.com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
<mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
<jolsa@...nel.org>, <namhyung@...nel.org>,
<linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org>
CC: <yangjihong1@...wei.com>
Subject: [RFC 12/13] perf kwork: Add workqueue latency support
Implements workqueue latency function.
test case:
# perf kwork -k workqueue lat
Kwork Name | Cpu | Avg delay | Frequency | Max delay | Max delay start | Max delay end |
---------------------------------------------------------------------------------------------------------------------------
(w)0xffff888101c5cc00 | 0001 | 5120.387 ms | 1 | 5120.387 ms | 2072619.309237 s | 2072624.429624 s |
(w)0xffff8883333e9040 | 0002 | 2.331 ms | 1 | 2.331 ms | 2072618.029512 s | 2072618.031844 s |
(w)0xffff888332fe9040 | 0000 | 0.724 ms | 5 | 1.628 ms | 2072620.638985 s | 2072620.640613 s |
(w)0xffff8883333ea180 | 0002 | 0.675 ms | 6 | 2.007 ms | 2072624.174209 s | 2072624.176216 s |
(w)0xffff888102e44400 | 0001 | 0.400 ms | 1 | 0.400 ms | 2072625.965284 s | 2072625.965684 s |
(w)0xffffffff82f7da00 | 0000 | 0.392 ms | 7 | 0.822 ms | 2072621.627843 s | 2072621.628665 s |
(w)0xffff8881035a83d8 | 0000 | 0.352 ms | 3 | 0.827 ms | 2072620.650451 s | 2072620.651278 s |
(w)0xffff888100e65c80 | 0001 | 0.318 ms | 78 | 1.228 ms | 2072620.504051 s | 2072620.505279 s |
(w)0xffff8881035a81e8 | 0004 | 0.285 ms | 1 | 0.285 ms | 2072621.357437 s | 2072621.357722 s |
(w)0xffff888102fc14a0 | 0002 | 0.279 ms | 5 | 0.319 ms | 2072618.029425 s | 2072618.029744 s |
(w)0xffff8883335e9040 | 0003 | 0.271 ms | 2 | 0.293 ms | 2072618.917354 s | 2072618.917647 s |
(w)0xffffffff8305ca48 | 0003 | 0.268 ms | 2 | 0.292 ms | 2072618.917407 s | 2072618.917699 s |
(w)0xffffffff8305c990 | 0003 | 0.256 ms | 1 | 0.256 ms | 2072625.973445 s | 2072625.973701 s |
(w)0xffff888102e444b8 | 0001 | 0.254 ms | 1 | 0.254 ms | 2072626.173289 s | 2072626.173542 s |
(w)0xffff888332fea180 | 0000 | 0.252 ms | 346 | 2.237 ms | 2072620.339623 s | 2072620.341860 s |
(w)0xffff8883331e9040 | 0001 | 0.226 ms | 2 | 0.234 ms | 2072625.965354 s | 2072625.965588 s |
(w)0xffff888100e65c80 | 0000 | 0.217 ms | 10 | 0.705 ms | 2072620.339040 s | 2072620.339745 s |
(w)0xffff888333de9040 | 0007 | 0.179 ms | 8 | 0.374 ms | 2072619.565271 s | 2072619.565645 s |
---------------------------------------------------------------------------------------------------------------------------
INFO: 0.024% skipped events (21 including 11 raise, 10 entry, 0 exit)
# perf kwork -k workqueue lat -s freq,avg
Kwork Name | Cpu | Avg delay | Frequency | Max delay | Max delay start | Max delay end |
---------------------------------------------------------------------------------------------------------------------------
(w)0xffff888332fea180 | 0000 | 0.252 ms | 346 | 2.237 ms | 2072620.339623 s | 2072620.341860 s |
(w)0xffff888100e65c80 | 0001 | 0.318 ms | 78 | 1.228 ms | 2072620.504051 s | 2072620.505279 s |
(w)0xffff888100e65c80 | 0000 | 0.217 ms | 10 | 0.705 ms | 2072620.339040 s | 2072620.339745 s |
(w)0xffff888333de9040 | 0007 | 0.179 ms | 8 | 0.374 ms | 2072619.565271 s | 2072619.565645 s |
(w)0xffffffff82f7da00 | 0000 | 0.392 ms | 7 | 0.822 ms | 2072621.627843 s | 2072621.628665 s |
(w)0xffff8883333ea180 | 0002 | 0.675 ms | 6 | 2.007 ms | 2072624.174209 s | 2072624.176216 s |
(w)0xffff888332fe9040 | 0000 | 0.724 ms | 5 | 1.628 ms | 2072620.638985 s | 2072620.640613 s |
(w)0xffff888102fc14a0 | 0002 | 0.279 ms | 5 | 0.319 ms | 2072618.029425 s | 2072618.029744 s |
(w)0xffff8881035a83d8 | 0000 | 0.352 ms | 3 | 0.827 ms | 2072620.650451 s | 2072620.651278 s |
(w)0xffff8883335e9040 | 0003 | 0.271 ms | 2 | 0.293 ms | 2072618.917354 s | 2072618.917647 s |
(w)0xffffffff8305ca48 | 0003 | 0.268 ms | 2 | 0.292 ms | 2072618.917407 s | 2072618.917699 s |
(w)0xffff8883331e9040 | 0001 | 0.226 ms | 2 | 0.234 ms | 2072625.965354 s | 2072625.965588 s |
(w)0xffff888101c5cc00 | 0001 | 5120.387 ms | 1 | 5120.387 ms | 2072619.309237 s | 2072624.429624 s |
(w)0xffff8883333e9040 | 0002 | 2.331 ms | 1 | 2.331 ms | 2072618.029512 s | 2072618.031844 s |
(w)0xffff888102e44400 | 0001 | 0.400 ms | 1 | 0.400 ms | 2072625.965284 s | 2072625.965684 s |
(w)0xffff8881035a81e8 | 0004 | 0.285 ms | 1 | 0.285 ms | 2072621.357437 s | 2072621.357722 s |
(w)0xffffffff8305c990 | 0003 | 0.256 ms | 1 | 0.256 ms | 2072625.973445 s | 2072625.973701 s |
(w)0xffff888102e444b8 | 0001 | 0.254 ms | 1 | 0.254 ms | 2072626.173289 s | 2072626.173542 s |
---------------------------------------------------------------------------------------------------------------------------
INFO: 0.024% skipped events (21 including 11 raise, 10 entry, 0 exit)
# perf kwork -k workqueue lat -C 1
Kwork Name | Cpu | Avg delay | Frequency | Max delay | Max delay start | Max delay end |
---------------------------------------------------------------------------------------------------------------------------
(w)0xffff888101c5cc00 | 0001 | 5120.387 ms | 1 | 5120.387 ms | 2072619.309237 s | 2072624.429624 s |
(w)0xffff888102e44400 | 0001 | 0.400 ms | 1 | 0.400 ms | 2072625.965284 s | 2072625.965684 s |
(w)0xffff888100e65c80 | 0001 | 0.318 ms | 78 | 1.228 ms | 2072620.504051 s | 2072620.505279 s |
(w)0xffff888102e444b8 | 0001 | 0.254 ms | 1 | 0.254 ms | 2072626.173289 s | 2072626.173542 s |
(w)0xffff8883331e9040 | 0001 | 0.226 ms | 2 | 0.234 ms | 2072625.965354 s | 2072625.965588 s |
---------------------------------------------------------------------------------------------------------------------------
INFO: 0.006% skipped events (5 including 3 raise, 2 entry, 0 exit)
Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
---
tools/perf/builtin-kwork.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index e0ffd3291b3a..7e3da243ccd8 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -935,6 +935,20 @@ static struct kwork_class kwork_softirq = {
};
static struct kwork_class kwork_workqueue;
+static int process_workqueue_activate_work_event(struct perf_tool *tool,
+ struct evsel *evsel,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ struct perf_kwork *kwork = container_of(tool, struct perf_kwork, tool);
+
+ if (kwork->tp_handler->raise_event)
+ return kwork->tp_handler->raise_event(kwork, &kwork_workqueue,
+ evsel, sample, machine);
+
+ return 0;
+}
+
static int process_workqueue_execute_start_event(struct perf_tool *tool,
struct evsel *evsel,
struct perf_sample *sample,
@@ -964,7 +978,7 @@ static int process_workqueue_execute_end_event(struct perf_tool *tool,
}
const struct evsel_str_handler workqueue_tp_handlers[] = {
- { "workqueue:workqueue_activate_work", NULL, },
+ { "workqueue:workqueue_activate_work", process_workqueue_activate_work_event, },
{ "workqueue:workqueue_execute_start", process_workqueue_execute_start_event, },
{ "workqueue:workqueue_execute_end", process_workqueue_execute_end_event, },
};
--
2.30.GIT
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