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| author |   Stuart Menefy <stuart.menefy@st.com> | 2009-08-24 17:35:07 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2009-08-24 17:35:07 +0900 |
| commit | 5e9377ec6f84e5334e9347e84e77d34e9a089ca7 (patch) | |
| tree | 786de19a4f24088aea641be293c869673449aa1f /firmware | |
| parent | sh: generic_in/outs{bwl} optimizations. (diff) | |
| download | linux-dev-5e9377ec6f84e5334e9347e84e77d34e9a089ca7.tar.xz linux-dev-5e9377ec6f84e5334e9347e84e77d34e9a089ca7.zip | |
sh: Optimise memcpy_to/fromio for SH4
Optimise memcpy_to/fromio. This is used extensivly by MTD, so is a
worthwhile performance gain. The main savings come from not repeatedly
calling readl/writel, and doing word instead of byte at a time
transfers. Also using "movca.l" on SH4 gives a small performance win.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions