mmc: block: Add MMC write packing statistics
The write packing statistics are used for the packed commands unit tests
in order to determine test success or failure
(cherry picked from commit 464fbe1af0248b7e85044ccebf4d4d96dd8fdeaa)
Change-Id: If5465118e0ea1b4c78b73a43b664d5b6bc9cae31
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
(cherry picked from commit db2e25650ab5fb62143ff39fcaea083176403fd1)
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 0330dfb..b016dbc 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -187,6 +187,25 @@
#define SDIO_MAX_FUNCS 7
+enum mmc_packed_stop_reasons {
+ EXCEEDS_SEGMENTS = 0,
+ EXCEEDS_SECTORS,
+ WRONG_DATA_DIR,
+ FLUSH_OR_DISCARD,
+ EMPTY_QUEUE,
+ REL_WRITE,
+ THRESHOLD,
+ MAX_REASONS,
+};
+
+struct mmc_wr_pack_stats {
+ u32 *packing_events;
+ u32 pack_stop_reason[MAX_REASONS];
+ spinlock_t lock;
+ bool enabled;
+ bool print_in_read;
+};
+
/* The number of MMC physical partitions. These consist of:
* boot partitions (2), general purpose partitions (4) in MMC v4.4.
*/
@@ -283,6 +302,7 @@
struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
unsigned int nr_parts;
+ struct mmc_wr_pack_stats wr_pack_stats; /* packed commands stats*/
};
/*
@@ -511,5 +531,8 @@
extern void mmc_fixup_device(struct mmc_card *card,
const struct mmc_fixup *table);
+extern struct mmc_wr_pack_stats *mmc_blk_get_packed_statistics(
+ struct mmc_card *card);
+extern void mmc_blk_init_packed_statistics(struct mmc_card *card);
#endif /* LINUX_MMC_CARD_H */