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| author | Russell King <[email protected]> | 2015-04-13 09:36:04 +0000 |
|---|---|---|
| committer | Russell King <[email protected]> | 2015-04-14 21:28:07 +0000 |
| commit | 57ca654bef6c43bbbccfb2d231fd245d3f67dd46 (patch) | |
| tree | 5c76973e14228695f742c71a33d87b7b9f916149 /net/unix/af_unix.c | |
| parent | ARM: switch to use the generic show_mem() implementation (diff) | |
| download | kernel-57ca654bef6c43bbbccfb2d231fd245d3f67dd46.tar.gz kernel-57ca654bef6c43bbbccfb2d231fd245d3f67dd46.zip | |
ARM: ensure delay timer has sufficient accuracy for delays
We have recently had an example of someone wanting to use a 90kHz timer
for the software delay loop.
udelay() needs to have at least microsecond resolution to allow drivers
access to a delay mechanism with a reasonable chance of delaying the
period they requested within at least a 50% marging of error, especially
for small delays.
Discussion about the udelay() accuracy can be found at:
https://lkml.org/lkml/2011/1/9/37
Reject timers which are unable to supply this level of resolution.
Acked-by: Nicolas Pitre <[email protected]>
Signed-off-by: Russell King <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions