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authorUlrich Drepper <drepper@redhat.com>2001-08-30 02:13:26 +0000
committerUlrich Drepper <drepper@redhat.com>2001-08-30 02:13:26 +0000
commit746802f20fae7bd377ce5d7aa9114357af48e178 (patch)
treef8e4c7456aedf677054c4491264435137daa0d64 /linuxthreads/sysdeps/i386/i686
parent6c3ebebd1eddb7041248125fa5e228380400c436 (diff)
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Update.
2001-08-29  Ulrich Drepper  <drepper@redhat.com>

	* spinlock.c (__pthread_lock): Top max_count value with
	MAX_ADAPTIVE_SPIN_COUNT.
	* internals.h (MAX_ADAPTIVE_SPIN_COUNT): Define if not already done.

	* sysdeps/i386/i686/pt-machine.h (BUSY_WAIT_NOP): New macro to
	help P4.
Diffstat (limited to 'linuxthreads/sysdeps/i386/i686')
-rw-r--r--linuxthreads/sysdeps/i386/i686/pt-machine.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/i386/i686/pt-machine.h b/linuxthreads/sysdeps/i386/i686/pt-machine.h
index 7df3e7e487..c7396024bb 100644
--- a/linuxthreads/sysdeps/i386/i686/pt-machine.h
+++ b/linuxthreads/sysdeps/i386/i686/pt-machine.h
@@ -64,3 +64,6 @@ __compare_and_swap (long int *p, long int oldval, long int newval)
 #if __ASSUME_LDT_WORKS > 0
 #include "../useldt.h"
 #endif
+
+/* The P4 and above really want some help to prevent overheating.  */
+#define BUSY_WAIT_NOP	__asm__ ("rep; nop")