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| author | Jaehoon Chung <jh80.chung@samsung.com> | 2014-01-20 12:46:10 +0900 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 11:46:10 +0900 |
| commit | 9f2f1b5b08580383dbffa47c549aa89a782b0b66 (patch) | |
| tree | 7166bfbf91be1ae99c963c9a95f5c71658ca524c /drivers/mmc/host | |
| parent | 1d111d37bd39949d3f560e3e3ef79f6c3e1af21c (diff) | |
| download | linux-3.10-9f2f1b5b08580383dbffa47c549aa89a782b0b66.tar.gz linux-3.10-9f2f1b5b08580383dbffa47c549aa89a782b0b66.tar.bz2 linux-3.10-9f2f1b5b08580383dbffa47c549aa89a782b0b66.zip | |
mmc: dw_mmc: change the blk-setting value for eMMC
Change the blk-setting value.
(benchmark : iozone, tiotest)
Before applied this patch,
Read : 17MB/s, Write : 71MB/s
After applied this patch,
Read : 30MB/s, Write : 72MB/s
Increased the Read performance.
Change-Id: I64142e97aea3aa7ac3d1ca78726f8dd3c133692d
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 95e6ba856d3..30443952c1e 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2021,9 +2021,9 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id) #ifdef CONFIG_MMC_DW_IDMAC mmc->max_segs = host->ring_size; mmc->max_blk_size = 65536; - mmc->max_blk_count = host->ring_size; mmc->max_seg_size = 0x1000; - mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count; + mmc->max_req_size = mmc->max_seg_size * host->ring_size; + mmc->max_blk_count = mmc->max_req_size / 512; #else mmc->max_segs = 64; mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */ |