patch-2.1.112 linux/include/asm-i386/smp_lock.h

• Lines: 92
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.111/linux/include/asm-i386/smp_lock.h
• Orig date: Fri Feb 6 15:32:54 1998

diff -u --recursive --new-file v2.1.111/linux/include/asm-i386/smp_lock.h linux/include/asm-i386/smp_lock.h
@@ -1,91 +0,0 @@
-#ifndef __I386_SMPLOCK_H
-#define __I386_SMPLOCK_H
-
-#define __STR(x) #x
-
-#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; \
-		active_kernel_processor = NO_PROC_ID; \
-		clear_bit(0,&kernel_flag); \
-	} \
-	release_irqlock(cpu); \
-	__sti(); \
-} while (0)
-
-/* Re-acquire the kernel lock */
-#define reacquire_kernel_lock(task, cpu, depth) \
-do { if (depth) __asm__ __volatile__( \
-	"cli\n\t" \
-	"call __lock_kernel\n\t" \
-	"movl %2,%0\n\t" \
-	"sti" \
-	: "=m" (task->lock_depth) \
-	: "d" (cpu), "c" (depth)); \
-} while (0)
-	
-
-extern const char lk_lockmsg[]; 
-
-/* Locking the kernel */
-extern __inline__ void lock_kernel(void)
-{
-	int cpu = smp_processor_id();
-
-	if (local_irq_count[cpu]) {
-		__label__ l1;
-l1:		printk(lk_lockmsg, &&l1);
-	}
-	if (cpu == global_irq_holder) {
-		__label__ l2;
-l2:		printk("Ugh at %p\n", &&l2);
-		sti();
-	}
-
-	__asm__ __volatile__("
-	pushfl
-	cli
-	cmpl	$0, %0
-	jne	0f
-	call	__lock_kernel
-0:	incl	%0
-	popfl
-"	:
-	: "m" (current->lock_depth), "d" (cpu)
-	: "memory");
-}
-
-extern __inline__ void unlock_kernel(void)
-{
-	__asm__ __volatile__("
-	pushfl
-	cli
-	decl	%0
-	jnz	1f
-	movb	%1, " __STR(active_kernel_processor) "
-	lock
-	btrl	$0, " __STR(kernel_flag) "
-1:
-	popfl
-"	: /* no outputs */
-	: "m" (current->lock_depth), "i" (NO_PROC_ID)
-	: "ax", "memory");
-}
-
-#endif /* __SMP__ */
-
-#endif /* __I386_SMPLOCK_H */