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authorPiotr Pawel Stefaniak <pstef@FreeBSD.org>2021-10-07 19:14:27 +0000
committerPiotr Pawel Stefaniak <pstef@FreeBSD.org>2022-03-26 13:34:20 +0000
commit6018f775cebf15df4309e9544e33123c54d8ef89 (patch)
treed43d534f54b08f4a562b547cd482dcca18710b48
parentf50cda551150dd1292548be2e0b2b052ec24613a (diff)
downloadsrc-6018f775cebf15df4309e9544e33123c54d8ef89.tar.gz
src-6018f775cebf15df4309e9544e33123c54d8ef89.zip
Mention kern.timecounter.alloweddeviation in nanosleep.2
PR: 224837 Reported by: Aleksander Derevianko (cherry picked from commit bf8f6ffcb66a27f498a18e520758ea0d18a6d2de) (cherry picked from commit 4f556830dec19ec8821b2ff939ab181192ea4dfc)
-rw-r--r--lib/libc/sys/nanosleep.27
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/libc/sys/nanosleep.2 b/lib/libc/sys/nanosleep.2
index 19ffcf1b7026..eb75c4b1043b 100644
--- a/lib/libc/sys/nanosleep.2
+++ b/lib/libc/sys/nanosleep.2
@@ -30,7 +30,7 @@
.\" @(#)sleep.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
-.Dd March 17, 2017
+.Dd October 7, 2021
.Dt NANOSLEEP 2
.Os
.Sh NAME
@@ -93,6 +93,11 @@ returns immediately and the calling thread is not suspended.
.Pp
The suspension time may be longer than requested due to the
scheduling of other activity by the system.
+It is also subject to the allowed time interval deviation
+specified by the
+.Va kern.timecounter.alloweddeviation
+.Xr sysctl 8
+variable.
An unmasked signal will terminate the sleep early, regardless of the
.Dv SA_RESTART
value on the interrupting signal.