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author | Florian Weimer <fweimer@redhat.com> | 2024-04-08 16:48:55 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2024-04-08 16:48:55 +0200 |
commit | 5653ccd847f0cd3a98906e44c97c71d68652d326 (patch) | |
tree | eba79527b3a44c6e89a0d0dbc4510396b861f17f /sysdeps/unix/sysv | |
parent | 1f94147a79fcb7211f1421b87383cad93986797f (diff) | |
download | glibc-5653ccd847f0cd3a98906e44c97c71d68652d326.tar.gz glibc-5653ccd847f0cd3a98906e44c97c71d68652d326.tar.xz glibc-5653ccd847f0cd3a98906e44c97c71d68652d326.zip |
elf: Add CPU iteration support for future use in ld.so diagnostics
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r-- | sysdeps/unix/sysv/linux/dl-affinity.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-affinity.h b/sysdeps/unix/sysv/linux/dl-affinity.h new file mode 100644 index 0000000000..bbfede7750 --- /dev/null +++ b/sysdeps/unix/sysv/linux/dl-affinity.h @@ -0,0 +1,46 @@ +/* CPU affinity handling for the dynamic linker. Linux version. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +/* See sysdeps/generic/dl-affinity.h for documentation of these interfaces. */ + +#ifndef DL_AFFINITY_H +#define DL_AFFINITY_H + +#include <sysdep.h> +#include <stddef.h> +#include <unistd.h> + +static inline int +_dl_getcpu (unsigned int *cpu, unsigned int *node) +{ + return INTERNAL_SYSCALL_CALL (getcpu, cpu, node); +} + +static int +_dl_getaffinity (unsigned long int *bits, size_t size) +{ + return INTERNAL_SYSCALL_CALL (sched_getaffinity, /* TID */ 0, size, bits); +} + +static int +_dl_setaffinity (const unsigned long int *bits, size_t size) +{ + return INTERNAL_SYSCALL_CALL (sched_setaffinity, /* TID */ 0, size, bits); +} + +#endif /* DL_AFFINITY_H */ |