Example:
mmc_csd: mmc0: struct: 0, cmdclass: 0x5b5, raw: {0x400e0032,0x5b590000,0x3b4b7f80,0xa404000}
Signed-off-by: Raul E Rangel <rrangel@xxxxxxxxxxxx>
---
drivers/mmc/core/mmc.c | 4 ++++
drivers/mmc/core/sd.c | 2 ++
include/trace/events/mmc.h | 29 +++++++++++++++++++++++++++++
3 files changed, 35 insertions(+)
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 3e786ba204c3..46ce894f7c03 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -20,6 +20,8 @@
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
+#include <trace/events/mmc.h>
+
#include "core.h"
#include "card.h"
#include "host.h"
@@ -182,6 +184,8 @@ static int mmc_decode_csd(struct mmc_card *card)
csd->erase_size <<= csd->write_blkbits - 9;
}
+ trace_mmc_csd(card);
+
return 0;
}
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 908c3087cdcd..3b2e09fa72c5 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -183,6 +183,8 @@ static int mmc_decode_csd(struct mmc_card *card)
card->erase_size = csd->erase_size;
+ trace_mmc_csd(card);
+
return 0;
}
diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h
index 8d97810221cd..46fd918bcae3 100644
--- a/include/trace/events/mmc.h
+++ b/include/trace/events/mmc.h
@@ -185,6 +185,35 @@ TRACE_EVENT(sd_ssr,
)
);
+TRACE_EVENT(mmc_csd,
+
+ TP_PROTO(struct mmc_card *card),
+
+ TP_ARGS(card),
+
+ TP_STRUCT__entry(
+ __array(u32, raw, 4)
+ __field(unsigned char, structure)
+ __field(unsigned short, cmdclass)
+ __string(name, mmc_hostname(card->host))
+ ),
+
+ TP_fast_assign(
+ BUILD_BUG_ON(sizeof(card->raw_csd) != sizeof(__entry->raw));
+ memcpy(__entry->raw, card->raw_csd, sizeof(__entry->raw));
+ __entry->structure = card->csd.structure;
+ __entry->cmdclass = card->csd.cmdclass;
+ __assign_str(name, mmc_hostname(card->host));
+ ),
+
+ TP_printk("%s: struct: %d, cmdclass: %#x, raw: %s",
+ __get_str(name),
+ __entry->structure,
+ __entry->cmdclass,
+ __print_array(__entry->raw, 4, sizeof(u32))
+ )
+);
+
TRACE_EVENT(mmc_request_start,
TP_PROTO(struct mmc_host *host, struct mmc_request *mrq),
--
2.21.0.392.gf8f6787159e-goog
