diff options
| author | Tim Murray <timmurray@google.com> | 2016-01-19 16:36:40 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 11:00:28 +0200 |
| commit | d19b5e09d4d08b5fede9ecd58dc29e3188529e20 (patch) | |
| tree | 419369598c10d079384e59dc15e1de0d48ed8eac /drivers | |
| parent | 469f10ed365f5e64fa123d42c655c080da469e00 (diff) | |
ANDROID: mmc: move to a SCHED_FIFO thread
(cherry picked from commit 011e507b413393eab8279dac8b778ad9b6e9971b)
Running mmcqd as a prio 120 thread forces it to compete with standard
user processes for IO performance, especially when the system is under
severe CPU load. Move it to a SCHED_FIFO thread to reduce the impact of
load on IO performance.
Signed-off-by: Tim Murray <timmurray@google.com>
Bug: 25392275
Change-Id: I1edfe73baa25e181367c30c1f40fee886e92b60d
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/card/queue.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 67526843e..07247279d 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -18,6 +18,7 @@ #include <linux/mmc/card.h> #include <linux/mmc/host.h> +#include <linux/sched/rt.h> #include "queue.h" #include <linux/mmc/mmc.h> #define MMC_QUEUE_BOUNCESZ 65536 @@ -49,6 +50,12 @@ static int mmc_queue_thread(void *d) { struct mmc_queue *mq = d; struct request_queue *q = mq->queue; + struct sched_param scheduler_params = {0}; + + scheduler_params.sched_priority = 1; + + sched_setscheduler(current, SCHED_FIFO, &scheduler_params); + #ifdef MMC_ENABLED_EMPTY_QUEUE_FLUSH #define UN_FLUSHED 0 #define FLUSHING 1 |