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authorAdrian Hunter <adrian.hunter@intel.com>2017-03-13 15:36:36 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2017-04-24 22:42:01 +0300
commit7b410d074b253a44624497a18e73f666a9574f37 (patch)
tree50c8855b01206c4843e6d088acadca59f0ce2657 /include/linux/mmc/card.h
parentcdf8a6fb48882651049e468e6b16956fb83db86c (diff)
downloadlinux-7b410d074b253a44624497a18e73f666a9574f37.tar.xz
mmc: queue: Share mmc request array between partitions
eMMC can have multiple internal partitions that are represented as separate disks / queues. However switching between partitions is only done when the queue is empty. Consequently the array of mmc requests that are queued can be shared between partitions saving memory. Keep a pointer to the mmc request queue on the card, and use that instead of allocating a new one for each partition. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc/card.h')
-rw-r--r--include/linux/mmc/card.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 77e61e0a216a..119ef8f0155c 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -208,6 +208,7 @@ struct sdio_cis {
struct mmc_host;
struct sdio_func;
struct sdio_func_tuple;
+struct mmc_queue_req;
#define SDIO_MAX_FUNCS 7
@@ -300,6 +301,10 @@ struct mmc_card {
struct dentry *debugfs_root;
struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
unsigned int nr_parts;
+
+ struct mmc_queue_req *mqrq; /* Shared queue structure */
+ unsigned int bouncesz; /* Bounce buffer size */
+ int qdepth; /* Shared queue depth */
};
static inline bool mmc_large_sector(struct mmc_card *card)