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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-28 08:33:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-28 08:33:25 -0700
commitc32f1a34ff1097110469a240ea4539dc9c101e96 (patch)
treeeda863205e83afe54cbedcf15cdac416cdec2cf5 /include/asm-sparc/smpprim.h
parent4f31f3080943c7e3541f07df326f06d598a067d0 (diff)
parent04d91cb8163f7f946e348b2362a6e5dfa5f06b13 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Set CONFIG_HAVE_ARCH_TRACEHOOK sparc: Add task_pt_regs(). sparc: Add call to tracehook_signal_handler(). sparc: Create and use TIF_NOTIFY_RESUME. sparc: Use tracehook routines in syscall_trace(). sparc64: tracehook: CONFIG_HAVE_ARCH_TRACEHOOK sparc: Add user_stack_pointer(). sparc64: tracehook_signal_handler sparc64: tracehook: TIF_NOTIFY_RESUME sparc: Add asm/syscall.h sparc64: tracehook syscall sparc: enable headers_export again sparc, sparc64: use arch/sparc/include
Diffstat (limited to 'include/asm-sparc/smpprim.h')
-rw-r--r--include/asm-sparc/smpprim.h54
1 files changed, 0 insertions, 54 deletions
diff --git a/include/asm-sparc/smpprim.h b/include/asm-sparc/smpprim.h
deleted file mode 100644
index eb849d862c6..00000000000
--- a/include/asm-sparc/smpprim.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * smpprim.h: SMP locking primitives on the Sparc
- *
- * God knows we won't be actually using this code for some time
- * but I thought I'd write it since I knew how.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#ifndef __SPARC_SMPPRIM_H
-#define __SPARC_SMPPRIM_H
-
-/* Test and set the unsigned byte at ADDR to 1. Returns the previous
- * value. On the Sparc we use the ldstub instruction since it is
- * atomic.
- */
-
-static inline __volatile__ char test_and_set(void *addr)
-{
- char state = 0;
-
- __asm__ __volatile__("ldstub [%0], %1 ! test_and_set\n\t"
- "=r" (addr), "=r" (state) :
- "0" (addr), "1" (state) : "memory");
-
- return state;
-}
-
-/* Initialize a spin-lock. */
-static inline __volatile__ smp_initlock(void *spinlock)
-{
- /* Unset the lock. */
- *((unsigned char *) spinlock) = 0;
-
- return;
-}
-
-/* This routine spins until it acquires the lock at ADDR. */
-static inline __volatile__ smp_lock(void *addr)
-{
- while(test_and_set(addr) == 0xff)
- ;
-
- /* We now have the lock */
- return;
-}
-
-/* This routine releases the lock at ADDR. */
-static inline __volatile__ smp_unlock(void *addr)
-{
- *((unsigned char *) addr) = 0;
-}
-
-#endif /* !(__SPARC_SMPPRIM_H) */