Hi,
On Mon, Aug 08, 2011 at 01:01:06PM +0200, Per Forlin wrote:
From: Per Forlin per.forlin@linaro.org
Skip the use of work queue and call musb_dma_completion() directly from DMA callback context.
Here follows measurements on a Snowball board with ondemand governor active.
Performance using work queue: (105 MB) copied, 6.23758 s, 16.8 MB/s (105 MB) copied, 5.7151 s, 18.3 MB/s (105 MB) copied, 5.83583 s, 18.0 MB/s (105 MB) copied, 5.93611 s, 17.7 MB/s
Performance without work queue (105 MB) copied, 5.62173 s, 18.7 MB/s (105 MB) copied, 5.61811 s, 18.7 MB/s (105 MB) copied, 5.57817 s, 18.8 MB/s (105 MB) copied, 5.58549 s, 18.8 MB/s
Signed-off-by: Per Forlin per.forlin@linaro.org Acked-by: Mian Yousaf Kaukabmian.yousaf.kaukab@stericsson.com
this patch doesn't apply anymore:
$ patch -p1 --dry-run < ~/apply.diff patching file drivers/usb/musb/ux500_dma.c Hunk #2 FAILED at 55. Hunk #3 succeeded at 325 (offset -4 lines). Hunk #4 succeeded at 341 (offset -4 lines). Hunk #5 succeeded at 367 (offset -4 lines). 1 out of 5 hunks FAILED -- saving rejects to file drivers/usb/musb/ux500_dma.c.rej
care to rebase on top of 3.1-rc1. Thanks