path: root/Documentation/timers
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authorHeiner Kallweit <>2020-05-01 23:27:21 +0200
committerDavid S. Miller <>2020-05-06 17:03:34 -0700
commitc6af13d334759c33c14b6fad4c676c6d1dbf9564 (patch)
tree7ec9292a89a88376a78f4ad035dc9986d1dcad7e /Documentation/timers
parent969c54646af0d7d94a5f0f37adbbfe024e85466e (diff)
timer: add fsleep for flexible sleeping
Sleeping for a certain amount of time requires use of different functions, depending on the time period. Documentation/timers/timers-howto.rst explains when to use which function, and also checkpatch checks for some potentially problematic cases. So let's create a helper that automatically chooses the appropriate sleep function -> fsleep(), for flexible sleeping If the delay is a constant, then the compiler should be able to ensure that the new helper doesn't create overhead. If the delay is not constant, then the new helper can save some code. Signed-off-by: Heiner Kallweit <> Signed-off-by: David S. Miller <>
Diffstat (limited to 'Documentation/timers')
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/timers/timers-howto.rst b/Documentation/timers/timers-howto.rst
index 7e3167bec2b1..afb0a43b8cdf 100644
--- a/Documentation/timers/timers-howto.rst
+++ b/Documentation/timers/timers-howto.rst
@@ -110,3 +110,6 @@ NON-ATOMIC CONTEXT:
short, the difference is whether the sleep can be ended
early by a signal. In general, just use msleep unless
you know you have a need for the interruptible variant.
+ FLEXIBLE SLEEPING (any delay, uninterruptible)
+ * Use fsleep