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Add sched_getcpu()

Browse Source 
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 18:35:53 +03:00
parent 43736b71dd
commit 77b2c2f814
16 changed files with 70 additions and 8 deletions
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1
include/sched.h
View File

@ -47,6 +47,7 @@ __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);
int sched_getcpu(void);
#endif /* __BSD_VISIBLE */
__END_DECLS

3
lib/libc/aarch64/sys/Makefile.inc
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@ -2,7 +2,8 @@
MIASM:= ${MIASM:Nfreebsd[467]_*}
SRCS+= __vdso_gettc.c
SRCS+= __vdso_gettc.c \
sched_getcpu_gen.c
MDASM= cerror.S \
syscall.S \

3
lib/libc/arm/sys/Makefile.inc
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@ -1,6 +1,7 @@
# $FreeBSD$
SRCS+= __vdso_gettc.c
SRCS+= __vdso_gettc.c \
sched_getcpu_gen.c
MDASM= Ovfork.S cerror.S syscall.S

1
lib/libc/gen/Symbol.map
View File

@ -438,6 +438,7 @@ FBSD_1.6 {
FBSD_1.7 {
sched_getaffinity;
sched_setaffinity;
sched_getcpu;
};
FBSDprivate_1.0 {

36
lib/libc/gen/sched_getcpu_gen.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>
#include "libc_private.h"
int
sched_getcpu(void)
{
return (__sys_sched_getcpu());
}

1
lib/libc/include/libc_private.h
View File

@ -371,6 +371,7 @@ __ssize_t __sys_recv(int, void *, __size_t, int);
__ssize_t __sys_recvfrom(int, void *, __size_t, int, struct sockaddr *,
__socklen_t *);
__ssize_t __sys_recvmsg(int, struct msghdr *, int);
int __sys_sched_getcpu(void);
int __sys_select(int, struct fd_set *, struct fd_set *,
struct fd_set *, struct timeval *);
__ssize_t __sys_sendmsg(int, const struct msghdr *, int);

3
lib/libc/mips/sys/Makefile.inc
View File

@ -1,6 +1,7 @@
# $FreeBSD$
SRCS+= trivial-vdso_tc.c
SRCS+= trivial-vdso_tc.c \
sched_getcpu_gen.c
MDASM= Ovfork.S cerror.S syscall.S

4
lib/libc/powerpc/sys/Makefile.inc
View File

@ -1,4 +1,6 @@
# $FreeBSD$
SRCS+= __vdso_gettc.c
SRCS+= __vdso_gettc.c \
sched_getcpu_gen.c
MDASM+= cerror.S

4
lib/libc/powerpc64/sys/Makefile.inc
View File

@ -1,4 +1,6 @@
# $FreeBSD$
SRCS+= __vdso_gettc.c
SRCS+= __vdso_gettc.c \
sched_getcpu_gen.c
MDASM+= cerror.S

3
lib/libc/riscv/sys/Makefile.inc
View File

@ -1,6 +1,7 @@
# $FreeBSD$
SRCS+= __vdso_gettc.c
SRCS+= __vdso_gettc.c \
sched_getcpu_gen.c
MDASM= cerror.S \
syscall.S \

3
lib/libc/sys/Makefile.inc
View File

@ -36,6 +36,9 @@ SRCS+= \
SRCS+= getdents.c lstat.c mknod.c stat.c
NOASM+= sched_getcpu.o
PSEUDO+= _sched_getcpu.o
SRCS+= fstat.c fstatat.c fstatfs.c getfsstat.c statfs.c
NOASM+= fstat.o fstatat.o fstatfs.o getfsstat.o statfs.o
PSEUDO+= _fstat.o _fstatat.o _fstatfs.o _getfsstat.o _statfs.o

3
lib/libc/x86/sys/Makefile.inc
View File

@ -4,7 +4,8 @@
SRCS+= \
__vdso_gettc.c \
pkru.c
pkru.c \
sched_getcpu_gen.c
MAN+= \
pkru.3

1
sys/compat/freebsd32/capabilities.conf
View File

@ -567,6 +567,7 @@ sbrk
##
sched_get_priority_max
sched_get_priority_min
sched_getcpu
##
## Allow various thread/process scheduler operations.

2
sys/compat/freebsd32/syscalls.master
View File

@ -1181,5 +1181,5 @@
const struct spacectl_range32 *rqsr, \
int flags, \
struct spacectl_range32 *rmsr); }
581 AUE_NULL NOPROTO { int sched_getcpu(void); }
; vim: syntax=off

7
sys/kern/kern_synch.c
View File

@ -686,3 +686,10 @@ sys_yield(struct thread *td, struct yield_args *uap)
td->td_retval[0] = 0;
return (0);
}
int
sys_sched_getcpu(struct thread *td, struct sched_getcpu_args *uap)
{
td->td_retval[0] = td->td_oncpu;
return (0);
}

3
sys/kern/syscalls.master
View File

@ -3261,6 +3261,9 @@
_Out_opt_ struct spacectl_range *rmsr,
);
}
581 AUE_NULL STD|CAPENABLED {
int sched_getcpu(void);
}
; Please copy any additions and changes to the following compatability tables:
; sys/compat/freebsd32/syscalls.master