lkml.org 
[lkml]   [2022]   [Jun]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC v2 02/17] perf kwork: Add irq kwork record support
Date
Record interrupt events irq:irq_handler_entry & irq_handler_exit

Test cases:

# perf kwork record -o perf_kwork.date -- sleep 1
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 0.556 MB perf_kwork.date ]
#
# perf evlist -i perf_kwork.date
irq:irq_handler_entry
irq:irq_handler_exit
dummy:HG
# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events
#

Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
---
tools/perf/Documentation/perf-kwork.txt | 2 +-
tools/perf/builtin-kwork.c | 15 ++++++++++++++-
tools/perf/util/kwork.h | 1 +
3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-kwork.txt b/tools/perf/Documentation/perf-kwork.txt
index dc1e36da57bb..57bd5fa7d5c9 100644
--- a/tools/perf/Documentation/perf-kwork.txt
+++ b/tools/perf/Documentation/perf-kwork.txt
@@ -32,7 +32,7 @@ OPTIONS

-k::
--kwork::
- List of kwork to profile
+ List of kwork to profile (irq, etc)

-v::
--verbose::
diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index f3552c56ede3..a26b7fde1e38 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -25,7 +25,20 @@
#include <linux/time64.h>
#include <linux/zalloc.h>

+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",
+ .type = KWORK_CLASS_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,
@@ -132,7 +145,7 @@ int cmd_kwork(int argc, const char **argv)
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "kwork", &kwork.event_list_str, "kwork",
- "list of kwork to profile"),
+ "list of kwork to profile (irq, etc)"),
OPT_BOOLEAN('f', "force", &kwork.force, "don't complain, do it"),
OPT_END()
};
diff --git a/tools/perf/util/kwork.h b/tools/perf/util/kwork.h
index 6950636aab2a..f1d89cb058fc 100644
--- a/tools/perf/util/kwork.h
+++ b/tools/perf/util/kwork.h
@@ -13,6 +13,7 @@
#include <linux/bitmap.h>

enum kwork_class_type {
+ KWORK_CLASS_IRQ,
KWORK_CLASS_MAX,
};

--
2.30.GIT
\
 
 \ /
  Last update: 2022-06-24 16:08    [W:0.101 / U:0.920 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site