diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sched_setaffinity.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sched_setaffinity.c | 39 |
1 files changed, 1 insertions, 38 deletions
diff --git a/sysdeps/unix/sysv/linux/sched_setaffinity.c b/sysdeps/unix/sysv/linux/sched_setaffinity.c index b528617e90..f3546fa8aa 100644 --- a/sysdeps/unix/sysv/linux/sched_setaffinity.c +++ b/sysdeps/unix/sysv/linux/sched_setaffinity.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002-2015 Free Software Foundation, Inc. +/* Copyright (C) 2002-2016 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 @@ -22,50 +22,13 @@ #include <unistd.h> #include <sys/types.h> #include <shlib-compat.h> -#include <alloca.h> #ifdef __NR_sched_setaffinity -static size_t __kernel_cpumask_size; - int __sched_setaffinity_new (pid_t pid, size_t cpusetsize, const cpu_set_t *cpuset) { - if (__glibc_unlikely (__kernel_cpumask_size == 0)) - { - INTERNAL_SYSCALL_DECL (err); - int res; - - size_t psize = 128; - void *p = alloca (psize); - - while (res = INTERNAL_SYSCALL (sched_getaffinity, err, 3, getpid (), - psize, p), - INTERNAL_SYSCALL_ERROR_P (res, err) - && INTERNAL_SYSCALL_ERRNO (res, err) == EINVAL) - p = extend_alloca (p, psize, 2 * psize); - - if (res == 0 || INTERNAL_SYSCALL_ERROR_P (res, err)) - { - __set_errno (INTERNAL_SYSCALL_ERRNO (res, err)); - return -1; - } - - __kernel_cpumask_size = res; - } - - /* We now know the size of the kernel cpumask_t. Make sure the user - does not request to set a bit beyond that. */ - for (size_t cnt = __kernel_cpumask_size; cnt < cpusetsize; ++cnt) - if (((char *) cpuset)[cnt] != '\0') - { - /* Found a nonzero byte. This means the user request cannot be - fulfilled. */ - __set_errno (EINVAL); - return -1; - } - int result = INLINE_SYSCALL (sched_setaffinity, 3, pid, cpusetsize, cpuset); #ifdef RESET_VGETCPU_CACHE |