linux-kernel - [PATCH v2 2/4] mmc: core: Add trace event for SD SSR response

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190416183257.247902-3-rrangel@chromium.org>
Date:   Tue, 16 Apr 2019 12:32:55 -0600
From:   Raul E Rangel <rrangel@...omium.org>
To:     linux-mmc@...r.kernel.org, linux-trace-devel@...r.kernel.org
Cc:     djkurtz@...omium.org, zwisler@...omium.org,
        Raul E Rangel <rrangel@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        hongjiefang <hongjiefang@...micro.com>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        Kyle Roeschley <kyle.roeschley@...com>,
        Avri Altman <avri.altman@....com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH v2 2/4] mmc: core: Add trace event for SD SSR response

Example:
sd_ssr: mmc0: au: 8192, erase time: 0, erase offset: 0x0, raw: {0x0,0x3000000,0x1019000,0x10000,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0}

Signed-off-by: Raul E Rangel <rrangel@...omium.org>
---

 drivers/mmc/core/sd.c      |  2 ++
 include/trace/events/mmc.h | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index f1772972d6a3..908c3087cdcd 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -292,6 +292,8 @@ static int mmc_read_ssr(struct mmc_card *card)
 	card->erase_arg = (card->scr.sda_specx && discard_support) ?
 			    SD_DISCARD_ARG : SD_ERASE_ARG;
 
+	trace_sd_ssr(card);
+
 	return 0;
 }
 
diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h
index 9761d3db16db..463cf318d762 100644
--- a/include/trace/events/mmc.h
+++ b/include/trace/events/mmc.h
@@ -61,6 +61,38 @@ TRACE_EVENT(sd_scr,
 	)
 );
 
+TRACE_EVENT(sd_ssr,
+
+	TP_PROTO(struct mmc_card *card),
+
+	TP_ARGS(card),
+
+	TP_STRUCT__entry(
+		__array(u32,			raw,	16)
+		__field(unsigned int,		au)
+		__field(unsigned int,		erase_timeout)
+		__field(unsigned int,		erase_offset)
+		__string(name,			mmc_hostname(card->host))
+	),
+
+	TP_fast_assign(
+		BUILD_BUG_ON(sizeof(card->raw_ssr) != sizeof(__entry->raw));
+		memcpy(__entry->raw, card->raw_ssr, sizeof(__entry->raw));
+		__entry->au = card->ssr.au;
+		__entry->erase_timeout = card->ssr.erase_timeout;
+		__entry->erase_offset = card->ssr.erase_offset;
+		__assign_str(name, mmc_hostname(card->host));
+	),
+
+	TP_printk("%s: au: %d, erase time: %d, erase offset: %#x, raw: %s",
+		  __get_str(name),
+		  __entry->au,
+		  __entry->erase_timeout,
+		  __entry->erase_offset,
+		  __print_array(__entry->raw, 16, sizeof(u32))
+	)
+);
+
 TRACE_EVENT(mmc_request_start,
 
 	TP_PROTO(struct mmc_host *host, struct mmc_request *mrq),
-- 
2.21.0.392.gf8f6787159e-goog