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04277e02 | 1 | /* Copyright (C) 2007-2019 Free Software Foundation, Inc. |
ec08f13d UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
ec08f13d | 17 | |
f672076e | 18 | #include <errno.h> |
ec08f13d UD |
19 | #include <sched.h> |
20 | #include <sysdep.h> | |
21 | ||
dd26c444 AZ |
22 | #ifdef HAVE_GETCPU_VSYSCALL |
23 | # define HAVE_VSYSCALL | |
24 | #endif | |
25 | #include <sysdep-vdso.h> | |
ec08f13d UD |
26 | |
27 | int | |
28 | sched_getcpu (void) | |
29 | { | |
30 | #ifdef __NR_getcpu | |
31 | unsigned int cpu; | |
dd26c444 | 32 | int r = INLINE_VSYSCALL (getcpu, 3, &cpu, NULL, NULL); |
ec08f13d | 33 | |
f672076e | 34 | return r == -1 ? r : cpu; |
ec08f13d UD |
35 | #else |
36 | __set_errno (ENOSYS); | |
37 | return -1; | |
38 | #endif | |
39 | } |