patch-2.1.112 linux/include/asm-sparc/smp_lock.h

• Lines: 90
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.111/linux/include/asm-sparc/smp_lock.h
• Orig date: Wed Apr 23 19:01:28 1997

diff -u --recursive --new-file v2.1.111/linux/include/asm-sparc/smp_lock.h linux/include/asm-sparc/smp_lock.h
@@ -1,89 +0,0 @@
-/* smp_lock.h: 32-bit Sparc SMP master lock primitives.
- *
- * Copyright (C) 1996,1997 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#ifndef __SPARC_SMPLOCK_H
-#define __SPARC_SMPLOCK_H
-
-#include <asm/smp.h>
-#include <asm/ptrace.h>
-
-#ifndef __SMP__
-
-#define lock_kernel()				do { } while(0)
-#define unlock_kernel()				do { } while(0)
-#define release_kernel_lock(task, cpu, depth)	((depth) = 1)
-#define reacquire_kernel_lock(task, cpu, depth)	do { } while(0)
-
-#else
-
-#include <asm/hardirq.h>
-
-/* Release global kernel lock and global interrupt lock */
-#define release_kernel_lock(task, cpu, depth)		\
-do {							\
-	if((depth = (task)->lock_depth) != 0) {		\
-		__cli();				\
-		(task)->lock_depth = 0;			\
-		klock_info.akp = NO_PROC_ID;		\
-		klock_info.kernel_flag = 0;		\
-	}						\
-	release_irqlock(cpu);				\
-	__sti();					\
-} while(0)
-
-/* Do not fuck with this without consulting arch/sparc/lib/locks.S first! */
-#define reacquire_kernel_lock(task, cpu, depth)					\
-do {										\
-	if(depth) {								\
-		register struct klock_info *klip asm("g1");			\
-		register int proc asm("g5");					\
-		klip = &klock_info;						\
-		proc = cpu;							\
-		__asm__ __volatile__("mov	%%o7, %%g4\n\t"			\
-				     "call	___lock_reacquire_kernel\n\t"	\
-				     " mov	%2, %%g2"			\
-				     : /* No outputs. */			\
-				     : "r" (klip), "r" (proc), "r" (depth)	\
-				     : "g2", "g3", "g4", "g7", "memory", "cc");	\
-	}									\
-} while(0)
-
-/* The following acquire and release the master kernel global lock,
- * the idea is that the usage of this mechanmism becomes less and less
- * as time goes on, to the point where they are no longer needed at all
- * and can thus disappear.
- */
-
-/* Do not fuck with this without consulting arch/sparc/lib/locks.S first! */
-extern __inline__ void lock_kernel(void)
-{
-	register struct klock_info *klip asm("g1");
-	register int proc asm("g5");
-	klip = &klock_info;
-	proc = smp_processor_id();
-	__asm__ __volatile__("
-	mov	%%o7, %%g4
-	call	___lock_kernel
-	 ld	[%%g6 + %0], %%g2
-"	: : "i" (AOFF_task_lock_depth), "r" (klip), "r" (proc)
-	: "g2", "g3", "g4", "g7", "memory", "cc");
-}
-
-/* Release kernel global lock. */
-extern __inline__ void unlock_kernel(void)
-{
-	register struct klock_info *klip asm("g1");
-	klip = &klock_info;
-	__asm__ __volatile__("
-	mov	%%o7, %%g4
-	call	___unlock_kernel
-	 ld	[%%g6 + %0], %%g2
-"	: : "i" (AOFF_task_lock_depth), "r" (klip)
-	: "g2", "g3", "g4", "memory", "cc");
-}
-
-#endif /* !(__SPARC_SMPLOCK_H) */
-
-#endif /* (__SMP__) */