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. --- sysdeps/unix/sysv/linux/sched_setaffinity.c | 12 ++++++++++-- sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 2 deletions(-) create mode 100644 sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c (limited to 'sysdeps/unix/sysv') diff --git a/sysdeps/unix/sysv/linux/sched_setaffinity.c b/sysdeps/unix/sysv/linux/sched_setaffinity.c index ccd3c8f..77cde47 100644 --- a/sysdeps/unix/sysv/linux/sched_setaffinity.c +++ b/sysdeps/unix/sysv/linux/sched_setaffinity.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2005, 2007 + 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 @@ -67,7 +68,14 @@ __sched_setaffinity_new (pid_t pid, size_t cpusetsize, const cpu_set_t *cpuset) return -1; } - return INLINE_SYSCALL (sched_setaffinity, 3, pid, cpusetsize, cpuset); + int result = INLINE_SYSCALL (sched_setaffinity, 3, pid, cpusetsize, cpuset); + +#ifdef RESET_VGETCPU_CACHE + if (result != -1) + RESET_VGETCPU_CACHE (); +#endif + + return result; } versioned_symbol (libc, __sched_setaffinity_new, sched_setaffinity, GLIBC_2_3_4); diff --git a/sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c b/sysdeps/unix/sysv/linux/x86_64/sched_setaffinity.c new file mode 100644 index 0000000..d1101c5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86_64/sched_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 "../sched_setaffinity.c" -- cgit v1.1