diff options
author | David Brownell <david-b@pacbell.net> | 2008-07-03 23:40:16 -0700 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:51:21 +0100 |
commit | 23a346ca4a5a6f50f81062456af955155f68e313 (patch) | |
tree | d2e37dfb9bdc350aab668ee0cac9168a43cc78ea /drivers/mtd/nand/Kconfig | |
parent | 175428b2b3eeacf90dcc171d5915d6b4dc86e917 (diff) |
[MTD] [NAND] atmel_nand speedup via {read,write}s{b,w}()
This uses __raw_{read,write}s{b,w}() primitives to access data on NAND
chips for more efficient I/O.
On an arm926 with memory clocked at 100 MHz, this reduced the elapsed time
for a 64 MiB read by 16%. ("dd" /dev/mtd0 to /dev/null, with an 8-bit
NAND using hardware ECC and 128KiB blocksize.)
Also some minor section tweaks:
- Use platform_driver_probe() so no pointer to probe() lingers
after that code has been removed at run-time.
- Use __exit and __exit_p so the remove() code will normally be
removed by the linker.
Since these buffer read/write calls are new, this increases the runtime
code footprint (by 88 bytes on my build, after the section tweaks).
[haavard.skinnemoen@atmel.com: rebase onto atmel_nand rename]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: HÃ¥vard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/Kconfig')
0 files changed, 0 insertions, 0 deletions