From: "Matwey V. Kornilov" <matwey@sai.msu.ru>
To: hverkuil@xs4all.nl, mchehab@kernel.org
Cc: rostedt@goodmis.org, mingo@redhat.com, isely@pobox.com,
bhumirks@gmail.com, colin.king@canonical.com,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
"Matwey V. Kornilov" <matwey@sai.msu.ru>
Subject: [PATCH 1/2] Add TRACE_EVENTs in pwc_isoc_handler()
Date: Sun, 17 Jun 2018 17:36:24 +0300 [thread overview]
Message-ID: <20180617143625.32133-1-matwey@sai.msu.ru> (raw)
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
---
drivers/media/usb/pwc/pwc-if.c | 7 +++++++
include/trace/events/pwc.h | 45 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 52 insertions(+)
create mode 100644 include/trace/events/pwc.h
diff --git a/drivers/media/usb/pwc/pwc-if.c b/drivers/media/usb/pwc/pwc-if.c
index 54b036d39c5b..5775d1f60668 100644
--- a/drivers/media/usb/pwc/pwc-if.c
+++ b/drivers/media/usb/pwc/pwc-if.c
@@ -57,6 +57,9 @@
- Pham Thanh Nam: webcam snapshot button as an event input device
*/
+#define CREATE_TRACE_POINTS
+#include <trace/events/pwc.h>
+
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/mm.h>
@@ -260,6 +263,8 @@ static void pwc_isoc_handler(struct urb *urb)
int i, fst, flen;
unsigned char *iso_buf = NULL;
+ trace_pwc_handler_enter(urb);
+
if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN) {
PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronously.\n",
@@ -347,6 +352,8 @@ static void pwc_isoc_handler(struct urb *urb)
pdev->vlast_packet_size = flen;
}
+ trace_pwc_handler_exit(urb);
+
handler_end:
i = usb_submit_urb(urb, GFP_ATOMIC);
if (i != 0)
diff --git a/include/trace/events/pwc.h b/include/trace/events/pwc.h
new file mode 100644
index 000000000000..b13d2118bb7a
--- /dev/null
+++ b/include/trace/events/pwc.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#if !defined(_TRACE_PWC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_PWC_H
+
+#include <linux/usb.h>
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM pwc
+
+TRACE_EVENT(pwc_handler_enter,
+ TP_PROTO(struct urb *urb),
+ TP_ARGS(urb),
+ TP_STRUCT__entry(
+ __field(struct urb*, urb)
+ __field(int, urb__status)
+ __field(u32, urb__actual_length)
+ ),
+ TP_fast_assign(
+ __entry->urb = urb;
+ __entry->urb__status = urb->status;
+ __entry->urb__actual_length = urb->actual_length;
+ ),
+ TP_printk("urb=%p (status=%d actual_length=%u)",
+ __entry->urb,
+ __entry->urb__status,
+ __entry->urb__actual_length)
+);
+
+TRACE_EVENT(pwc_handler_exit,
+ TP_PROTO(struct urb *urb),
+ TP_ARGS(urb),
+ TP_STRUCT__entry(
+ __field(struct urb*, urb)
+ ),
+ TP_fast_assign(
+ __entry->urb = urb;
+ ),
+ TP_printk("urb=%p", __entry->urb)
+);
+
+#endif /* _TRACE_PWC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
--
2.16.0-rc1
next reply other threads:[~2018-06-17 14:36 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-17 14:36 Matwey V. Kornilov [this message]
2018-06-17 14:36 ` [PATCH 2/2] media: usb: pwc: Don't use coherent DMA buffers for ISO transfer Matwey V. Kornilov
2018-06-18 5:11 ` Ezequiel Garcia
2018-06-18 7:10 ` Matwey V. Kornilov
2018-07-17 20:10 ` Ezequiel Garcia
2018-07-17 20:51 ` Alan Stern
2018-07-20 10:55 ` Tomasz Figa
2018-07-20 11:22 ` Matwey V. Kornilov
2018-07-20 11:33 ` Tomasz Figa
2018-07-20 11:57 ` Matwey V. Kornilov
2018-07-23 17:04 ` Matwey V. Kornilov
2018-07-23 18:57 ` Alan Stern
2018-07-24 18:56 ` Matwey V. Kornilov
2018-07-24 20:55 ` Alan Stern
2018-07-25 13:46 ` Matwey V. Kornilov
2018-07-30 4:14 ` Tomasz Figa
2018-08-04 8:05 ` Matwey V. Kornilov
2018-07-30 15:35 ` Laurent Pinchart
2018-08-04 8:00 ` Matwey V. Kornilov
2018-08-04 14:46 ` Alan Stern
2018-08-05 7:49 ` Christoph Hellwig
2018-08-05 8:33 ` Matwey V. Kornilov
2018-08-05 8:41 ` Christoph Hellwig
2018-08-08 22:32 ` Laurent Pinchart
2018-08-09 2:36 ` Tomasz Figa
2018-08-09 10:28 ` Laurent Pinchart
2018-07-30 15:13 ` Laurent Pinchart
2018-07-18 12:10 ` Matwey V. Kornilov
2018-07-19 23:36 ` Ezequiel Garcia
2018-07-20 9:35 ` Matwey V. Kornilov
2018-07-30 15:42 ` Laurent Pinchart
2018-07-30 16:07 ` Mauro Carvalho Chehab
2018-07-31 6:06 ` Tomasz Figa
2018-06-18 18:58 ` [PATCH 1/2] Add TRACE_EVENTs in pwc_isoc_handler() Steven Rostedt
2018-06-19 16:23 ` Matwey V. Kornilov
2018-06-19 16:33 ` Steven Rostedt
2018-06-20 8:05 ` Matwey V. Kornilov
2018-06-20 13:09 ` Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180617143625.32133-1-matwey@sai.msu.ru \
--to=matwey@sai.msu.ru \
--cc=bhumirks@gmail.com \
--cc=colin.king@canonical.com \
--cc=hverkuil@xs4all.nl \
--cc=isely@pobox.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mchehab@kernel.org \
--cc=mingo@redhat.com \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).