* 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.

ChangeLog

@@ -1,5 +1,10 @@
 2007-05-10  Ulrich Drepper  <drepper@redhat.com>
 
+	* 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.
+
 	* io/sys/stat.h: Make sure struct timespec is defined for
 	__USE_ATFILE.
 

io/sys/stat.h

@@ -29,7 +29,7 @@
 #include <bits/types.h>		/* For __mode_t and __dev_t.  */
 
 #if defined __USE_XOPEN || defined __USE_XOPEN2K || defined __USE_MISC \
-         || __USE_ATFILE
+         || defined __USE_ATFILE
 # if defined __USE_XOPEN || defined __USE_XOPEN2K
 #  define __need_time_t
 # endif

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]

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);

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"

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);

sysdeps/unix/sysv/linux/x86_64/sched_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 "../sched_setaffinity.c"