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Add sched_get/setaffinity(3)

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for compatibility with Linux.

Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D32901
This commit is contained in:
Konstantin Belousov 2021-10-22 18:21:33 +03:00
parent 160b4b922b
commit 43736b71dd
5 changed files with 86 additions and 0 deletions
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7
include/sched.h
View File

@ -43,4 +43,11 @@ typedef struct _cpuset cpu_set_t;
#endif /* _WITH_CPU_SET_T */
#endif /* __BSD_VISIBLE */
__BEGIN_DECLS
#if __BSD_VISIBLE
int sched_getaffinity(pid_t pid, size_t cpusetsz, cpuset_t *cpuset);
int sched_setaffinity(int pid, size_t cpusetsz, const cpuset_t *cpuset);
#endif /* __BSD_VISIBLE */
__END_DECLS
#endif /* __SCHED_H__ */

2
lib/libc/gen/Makefile.inc
View File

@ -123,6 +123,8 @@ SRCS+= __getosreldate.c \
scandir.c \
scandir_b.c \
scandir-compat11.c \
sched_getaffinity.c \
sched_setaffinity.c \
seed48.c \
seekdir.c \
semctl.c \

5
lib/libc/gen/Symbol.map
View File

@ -435,6 +435,11 @@ FBSD_1.6 {
tcsetwinsize;
};
FBSD_1.7 {
sched_getaffinity;
sched_setaffinity;
};
FBSDprivate_1.0 {
/* needed by thread libraries */
__thr_jtable;

36
lib/libc/gen/sched_getaffinity.c Normal file
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@ -0,0 +1,36 @@
/*-
* Copyright (c) 2021 The FreeBSD Foundation
*
* This software were developed by Konstantin Belousov <kib@FreeBSD.org>
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sched.h>
int
sched_getaffinity(pid_t pid, size_t cpusetsz, cpuset_t *cpuset)
{
return (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, pid,
cpusetsz, cpuset));
}

36
lib/libc/gen/sched_setaffinity.c Normal file
View File

@ -0,0 +1,36 @@
/*-
* Copyright (c) 2021 The FreeBSD Foundation
*
* This software were developed by Konstantin Belousov <kib@FreeBSD.org>
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sched.h>
int
sched_setaffinity(pid_t pid, size_t cpusetsz, const cpuset_t *cpuset)
{
return (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, pid,
cpusetsz, cpuset));
}