diff options
| author | Mark Brown <broonie@kernel.org> | 2016-02-15 18:28:02 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-18 17:41:44 +0000 |
| commit | 628269704f19fcfc765499b7158effccfc79b6cf (patch) | |
| tree | c4d5f2000c5e0bb167e435589bce9500180e8839 /Documentation/early-userspace | |
| parent | 556351f14e74db4cd3ddde386457edce7bf0b27f (diff) | |
spi: Add cond_resched() in main message processing loop
When a controller has only PIO support it is very likely that we will
run into use cases where we spend a very large amount of time consuming
CPU. Code that does this should call cond_resched() every once in a
while to give other tasks more of a chance to run so do that in the main
SPI loop, the overhead is negligable if it's not needed.
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/early-userspace')