diff options
| author | Konstantin Dorfman <kdorfman@codeaurora.org> | 2013-01-14 14:28:17 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-02-11 13:28:49 -0500 |
| commit | 2220eedfd7aea69008173a224975e10284fbe854 (patch) | |
| tree | 71906c2638d2e0052b15a40e71310f6984f3ee8f /drivers/mmc/core/core.h | |
| parent | 369d321ed1baa7748e770aaaae4d8effad699633 (diff) | |
| download | linux-2220eedfd7aea69008173a224975e10284fbe854.tar.bz2 | |
mmc: fix async request mechanism for sequential read scenarios
When current request is running on the bus and if next request fetched
by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the
current request completes. This means that if new request comes in while
the mmcqd thread is blocked, this new request can not be prepared in
parallel to current ongoing request. This may result in delaying the new
request execution and increase it's latency.
This change allows to wake up the MMC thread on new request arrival.
Now once the MMC thread is woken up, a new request can be fetched and
prepared in parallel to the current running request which means this new
request can be started immediately after the current running request
completes.
With this change read throughput is improved by 16%.
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Reviewed-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core/core.h')
| -rw-r--r-- | drivers/mmc/core/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 3bdafbca354f..0272b3284b5e 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -76,5 +76,6 @@ void mmc_remove_host_debugfs(struct mmc_host *host); void mmc_add_card_debugfs(struct mmc_card *card); void mmc_remove_card_debugfs(struct mmc_card *card); +void mmc_init_context_info(struct mmc_host *host); #endif |