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Subject[RFC v2 07/17] perf kwork: Add irq report support
Date
Implements irq kwork report function.

Test cases:

# perf kwork record -- sleep 10
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 6.134 MB perf.data ]

# perf kwork report

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s |
eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report -C 2

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report -C 3

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report -i perf.data

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s |
eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report -s max,freq

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s |
eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report -S

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s |
eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------
Total count : 18289
Total runtime (msec) : 1167.686 (0.115% load average)
Total time span (msec) : 10159.155
--------------------------------------------------------------------------------------------------------------------------------

# perf kwork report --time 44005,

Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end |
--------------------------------------------------------------------------------------------------------------------------------
virtio0-requests:25 | 0000 | 402.173 ms | 4695 | 0.981 ms | 44007.831992 s | 44007.832973 s |
eth0:10 | 0002 | 0.089 ms | 2 | 0.058 ms | 44005.012222 s | 44005.012280 s |
--------------------------------------------------------------------------------------------------------------------------------

Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
---
tools/perf/builtin-kwork.c | 63 ++++++++++++++++++++++++++++++++++++--
1 file changed, 61 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index 9c488d647995..b1993be0a20a 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -479,16 +479,75 @@ static int report_exit_event(struct perf_kwork *kwork,
return 0;
}

+static struct kwork_class kwork_irq;
+static int process_irq_handler_entry_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->entry_event)
+ return kwork->tp_handler->entry_event(kwork, &kwork_irq,
+ evsel, sample, machine);
+ return 0;
+}
+
+static int process_irq_handler_exit_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->exit_event)
+ return kwork->tp_handler->exit_event(kwork, &kwork_irq,
+ evsel, sample, machine);
+ return 0;
+}
+
const struct evsel_str_handler irq_tp_handlers[] = {
- { "irq:irq_handler_entry", NULL, },
- { "irq:irq_handler_exit", NULL, },
+ { "irq:irq_handler_entry", process_irq_handler_entry_event, },
+ { "irq:irq_handler_exit", process_irq_handler_exit_event, },
};

+static int irq_class_init(struct kwork_class *class,
+ struct perf_session *session)
+{
+ if (perf_session__set_tracepoints_handlers(session, irq_tp_handlers)) {
+ pr_err("Failed to set irq tracepoints handlers\n");
+ return -1;
+ }
+
+ class->work_root = RB_ROOT_CACHED;
+ return 0;
+}
+
+static void irq_work_init(struct kwork_class *class,
+ struct kwork_work *work,
+ struct evsel *evsel,
+ struct perf_sample *sample,
+ struct machine *machine __maybe_unused)
+{
+ work->class = class;
+ work->cpu = sample->cpu;
+ work->id = evsel__intval(evsel, sample, "irq");
+ work->name = evsel__strval(evsel, sample, "name");
+}
+
+static void irq_work_name(struct kwork_work *work, char *buf, int len)
+{
+ snprintf(buf, len, "%s:%" PRIu64 "", work->name, work->id);
+}
+
static struct kwork_class kwork_irq = {
.name = "irq",
.type = KWORK_CLASS_IRQ,
.nr_tracepoints = 2,
.tp_handlers = irq_tp_handlers,
+ .class_init = irq_class_init,
+ .work_init = irq_work_init,
+ .work_name = irq_work_name,
};

const struct evsel_str_handler softirq_tp_handlers[] = {
--
2.30.GIT
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