2022-06-13 10:02:43

by Yang Jihong

[permalink] [raw]
Subject: [RFC 02/13] perf kwork: Add irq record support

Record interrupt events irq:irq_handler_entry & irq_handler_exit:

Record irq events:

# perf kwork record -o perf_kwork.date -- sleep 1
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 0.524 MB perf_kwork.date ]

# perf evlist -i perf_kwork.date
irq:irq_handler_entry
irq:irq_handler_exit
dummy:HG

Signed-off-by: Yang Jihong <[email protected]>
---
tools/perf/builtin-kwork.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index b89e41fcc568..822904b2597e 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -25,6 +25,7 @@
#include <linux/zalloc.h>

enum kwork_class_type {
+ KWORK_CLASS_IRQ,
KWORK_CLASS_MAX,
};

@@ -68,7 +69,19 @@ struct perf_kwork {
const char *sort_order;
};

+const struct evsel_str_handler irq_tp_handlers[] = {
+ { "irq:irq_handler_entry", NULL, },
+ { "irq:irq_handler_exit", NULL, },
+};
+
+static struct kwork_class kwork_irq = {
+ .name = "irq",
+ .nr_tracepoints = 2,
+ .tp_handlers = irq_tp_handlers,
+};
+
static struct kwork_class *kwork_class_supported_list[KWORK_CLASS_MAX] = {
+ [KWORK_CLASS_IRQ] = &kwork_irq,
};

static void setup_event_list(struct perf_kwork *kwork,
--
2.30.GIT