diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 7 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c | 8 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c | 14 |
3 files changed, 28 insertions, 1 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index deeb6f1632..24511664b7 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,10 @@ +2007-05-10 Ulrich Drepper <drepper@redhat.com> + + * sysdeps/unix/sysv/linux/pthread_setaffinity.c + (__pthread_setaffinity_new): If syscall was successful and + RESET_VGETCPU_CACHE is defined, use it before returning. + * sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c: New file. + 2007-05-10 Jakub Jelinek <jakub@redhat.com> [BZ #4455] diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c b/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c index 3776e26e4b..fa0f46feec 100644 --- a/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c +++ b/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. @@ -79,6 +79,12 @@ __pthread_setaffinity_new (pthread_t th, size_t cpusetsize, res = INTERNAL_SYSCALL (sched_setaffinity, err, 3, pd->tid, cpusetsize, cpuset); + +#ifdef RESET_VGETCPU_CACHE + if (!INTERNAL_SYSCALL_ERROR_P (res, err)) + RESET_VGETCPU_CACHE (); +#endif + return (INTERNAL_SYSCALL_ERROR_P (res, err) ? INTERNAL_SYSCALL_ERRNO (res, err) : 0); diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c new file mode 100644 index 0000000000..640d3044fd --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c @@ -0,0 +1,14 @@ +#include <tls.h> + +#define RESET_VGETCPU_CACHE() \ + do { \ + asm volatile ("movl %0, %%fs:%P1\n\t" \ + "movl %0, %%fs:%P2" \ + : \ + : "ir" (0), "i" (offsetof (struct pthread, \ + header.vgetcpu_cache[0])), \ + "i" (offsetof (struct pthread, \ + header.vgetcpu_cache[1]))); \ + } while (0) + +#include "../pthread_setaffinity.c" |