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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2017-03-13 14:36:36 +0200 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2017-04-24 21:42:01 +0200 |
| commit | 7b410d074b253a44624497a18e73f666a9574f37 (patch) | |
| tree | 50c8855b01206c4843e6d088acadca59f0ce2657 /include/linux/mmc | |
| parent | mmc: block: Introduce queue semantics (diff) | |
| download | linux-dev-7b410d074b253a44624497a18e73f666a9574f37.tar.xz linux-dev-7b410d074b253a44624497a18e73f666a9574f37.zip | |
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')
| -rw-r--r-- | include/linux/mmc/card.h | 5 |
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) |