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Define _POSIX_PRIORITY_SCHEDULING as 0.

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sched_*(2) syscalls might be not available at runtime.  Defining this
constant as zero directs POSIX-compliant code to call sysconf(3) to
detect the feature at runtime, and forces libc sysconf(3) to ask
kernel.

Noted by:	ngie
Reviewed by:	jilles, ngie
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D9055
This commit is contained in:
Konstantin Belousov 2017-01-07 12:24:45 +00:00
parent 6a09b20655
commit c9eddd660c
1 changed files with 1 additions and 1 deletions
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2
sys/sys/unistd.h
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@ -65,7 +65,7 @@
#define _POSIX_MONOTONIC_CLOCK 200112L
#define _POSIX_NO_TRUNC 1
#define _POSIX_PRIORITIZED_IO (-1)
#define _POSIX_PRIORITY_SCHEDULING 200112L
#define _POSIX_PRIORITY_SCHEDULING 0
#define _POSIX_RAW_SOCKETS 200112L
#define _POSIX_REALTIME_SIGNALS 200112L
#define _POSIX_SEMAPHORES 200112L