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authorUlrich Drepper <drepper@redhat.com>2007-05-23 20:51:45 +0000
committerUlrich Drepper <drepper@redhat.com>2007-05-23 20:51:45 +0000
commit5a8075b116280d0c1ece277e4be75250efca45b2 (patch)
tree7c63a4ba94c14bc46ececab97c299aff01078fb7 /nptl/sysdeps/x86_64/tls.h
parent6d59823c29df228415836f289e62064f95849e71 (diff)
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* init.c (__pthread_initialize_minimal_internal): Check whether
	private futexes are available.
	* allocatestack.c (allocate_stack): Copy private_futex field from
	current thread into the new stack.
	* sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Use private
	futexes if they are available.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Likewise
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Adjust so that change
	in libc-lowlevellock.S allow using private futexes.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Define
	FUTEX_PRIVATE_FLAG.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Use private futexes
	if they are available.
	* sysdeps/unix/sysv/linux/i386/pthread_once.S: Likewise.
	* sysdeps/x86_64/tcb-offsets.sym: Add PRIVATE_FUTEX.
	* sysdeps/i386/tcb-offsets.sym: Likewise.
	* sysdeps/x86_64/tls.h (tcbhead_t): Add private_futex field.
	* sysdeps/i386/tls.h (tcbhead_t): Likewise.
Diffstat (limited to 'nptl/sysdeps/x86_64/tls.h')
-rw-r--r--nptl/sysdeps/x86_64/tls.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/nptl/sysdeps/x86_64/tls.h b/nptl/sysdeps/x86_64/tls.h
index 3a69e0428a..5ddaafadad 100644
--- a/nptl/sysdeps/x86_64/tls.h
+++ b/nptl/sysdeps/x86_64/tls.h
@@ -27,6 +27,7 @@
 # include <stdint.h>
 # include <stdlib.h>
 # include <sysdep.h>
+# include <kernel-features.h>
 
 
 /* Type for the dtv.  */
@@ -53,6 +54,9 @@ typedef struct
   uintptr_t stack_guard;
   uintptr_t pointer_guard;
   unsigned long int vgetcpu_cache[2];
+#ifndef __ASSUME_PRIVATE_FUTEX
+  int private_futex;
+#endif
 } tcbhead_t;
 
 #else /* __ASSEMBLER__ */