From: Raul E Rangel <rrangel@chromium.org>
To: linux-mmc@vger.kernel.org, linux-trace-devel@vger.kernel.org
Cc: djkurtz@chromium.org, zwisler@chromium.org,
Raul E Rangel <rrangel@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>,
hongjiefang <hongjiefang@asrmicro.com>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org,
Shawn Lin <shawn.lin@rock-chips.com>,
Kyle Roeschley <kyle.roeschley@ni.com>,
Avri Altman <avri.altman@wdc.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH v1 1/4] mmc: core: Add trace event for SD SCR response
Date: Mon, 15 Apr 2019 16:52:38 -0600 [thread overview]
Message-ID: <20190415225241.70088-1-rrangel@chromium.org> (raw)
Example:
sd_scr: mmc0: version: 2, spec3: 1, width: 5, cmds: 0, raw: {0x2b58000,0x0}
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
---
drivers/mmc/core/sd.c | 4 ++++
include/trace/events/mmc.h | 42 ++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+)
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 265e1aeeb9d8..3bed7c4b6d75 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -21,6 +21,8 @@
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
+#include <trace/events/mmc.h>
+
#include "core.h"
#include "card.h"
#include "host.h"
@@ -200,6 +202,7 @@ static int mmc_decode_scr(struct mmc_card *card)
if (scr_struct != 0) {
pr_err("%s: unrecognised SCR structure version %d\n",
mmc_hostname(card->host), scr_struct);
+ trace_sd_scr(card, NULL);
return -EINVAL;
}
@@ -221,6 +224,7 @@ static int mmc_decode_scr(struct mmc_card *card)
if (scr->sda_spec3)
scr->cmds = UNSTUFF_BITS(resp, 32, 2);
+ trace_sd_scr(card, scr);
return 0;
}
diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h
index 7b706ff21335..e45258e8a6cb 100644
--- a/include/trace/events/mmc.h
+++ b/include/trace/events/mmc.h
@@ -10,6 +10,48 @@
#include <linux/mmc/host.h>
#include <linux/tracepoint.h>
+TRACE_EVENT(sd_scr,
+
+ TP_PROTO(struct mmc_card *card, struct sd_scr *scr),
+
+ TP_ARGS(card, scr),
+
+ TP_STRUCT__entry(
+ __array(u32, raw, 2)
+ __field(unsigned char, sda_vsn)
+ __field(unsigned char, sda_spec3)
+ __field(unsigned char, bus_widths)
+ __field(unsigned char, cmds)
+ __string(name, mmc_hostname(card->host))
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->raw, card->raw_scr, sizeof(card->raw_scr));
+ if (scr) {
+ __entry->sda_vsn = scr->sda_vsn;
+ __entry->sda_spec3 = scr->sda_spec3;
+ __entry->bus_widths = scr->bus_widths;
+ __entry->cmds = scr->cmds;
+ } else {
+ __entry->sda_vsn = 0;
+ __entry->sda_spec3 = 0;
+ __entry->bus_widths = 0;
+ __entry->cmds = 0;
+ }
+ __assign_str(name, mmc_hostname(card->host));
+ ),
+
+ TP_printk("%s: version: %d, spec3: %d, width: %d, cmds: %d, "
+ "raw: %s",
+ __get_str(name),
+ __entry->sda_vsn,
+ __entry->sda_spec3,
+ __entry->bus_widths,
+ __entry->cmds,
+ __print_array(__entry->raw, 2, sizeof(u32))
+ )
+);
+
TRACE_EVENT(mmc_request_start,
TP_PROTO(struct mmc_host *host, struct mmc_request *mrq),
--
2.21.0.392.gf8f6787159e-goog
next reply other threads:[~2019-04-15 22:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 22:52 Raul E Rangel [this message]
2019-04-15 22:52 ` [PATCH v1 2/4] mmc: core: Add trace event for SD SSR response Raul E Rangel
2019-04-15 23:34 ` Steven Rostedt
2019-04-15 22:52 ` [PATCH v1 3/4] mmc: core: Add trace event for SD OCR response Raul E Rangel
2019-04-15 22:52 ` [PATCH v1 4/4] mmc: core: Add trace event for CSD response Raul E Rangel
2019-04-15 23:31 ` [PATCH v1 1/4] mmc: core: Add trace event for SD SCR response Steven Rostedt
2019-04-16 12:36 ` Avri Altman
2019-04-16 12:36 ` Avri Altman
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=20190415225241.70088-1-rrangel@chromium.org \
--to=rrangel@chromium.org \
--cc=avri.altman@wdc.com \
--cc=djkurtz@chromium.org \
--cc=hongjiefang@asrmicro.com \
--cc=kyle.roeschley@ni.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=linux-trace-devel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=rostedt@goodmis.org \
--cc=shawn.lin@rock-chips.com \
--cc=ulf.hansson@linaro.org \
--cc=zwisler@chromium.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.