From 3771196d1d5ac6a4213fdb77b4974ca69cd1ae09 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 10 May 2007 23:38:55 +0000 Subject: * sysdeps/unix/sysv/linux/sched_setaffinity.c (__sched_setaffinity_new): If syscall was successful and RESET_VGETCPU_CACHE is defined, use it before returning. * sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c: New file. --- nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c | 8 +++++++- nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c | 14 ++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) create mode 100644 nptl/sysdeps/unix/sysv/linux/x86_64/pthread_setaffinity.c (limited to 'nptl/sysdeps') 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 , 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 + +#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" -- cgit v1.2.3