X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-alpha.h;h=e204368389aaec880c0a840ab30fc49fa0235645;hp=2b6832018f76baedcaea13e41bcf69f1f4c6e648;hb=edf2c6cf5adc82ee43c81e033cf2215eb9ffdb16;hpb=697a606cc0af1c39ac18998c344a522199accb36

diff --git a/arch/arch-alpha.h b/arch/arch-alpha.h
index 2b683201..e2043683 100644
--- a/arch/arch-alpha.h
+++ b/arch/arch-alpha.h
@@ -12,7 +12,43 @@
 #define __NR_fadvise64		413
 #endif
 
-#define nop		do { } while (0)
-#define read_barrier()	__asm__ __volatile__("mb": : :"memory")
+#ifndef __NR_sys_splice
+#define __NR_sys_splice		468
+#define __NR_sys_tee		470
+#define __NR_sys_vmsplice	471
+#endif
+
+#define nop			do { } while (0)
+#define read_barrier()		__asm__ __volatile__("mb": : :"memory")
+#define writer_barrier()	__asm__ __volatile__("wmb": : :"memory")
+
+typedef struct {
+	volatile unsigned int lock;
+} spinlock_t;
+
+static inline void spin_lock(spinlock_t *lock)
+{
+	long tmp;
+
+	__asm__ __volatile__("1:     ldl_l   %0,%1\n"
+			"       bne     %0,2f\n"
+			"       lda     %0,1\n"
+			"       stl_c   %0,%1\n"
+			"       beq     %0,2f\n"
+			"       mb\n"
+			".subsection 2\n"
+			"2:     ldl     %0,%1\n"
+			"       bne     %0,2b\n"
+			"       br      1b\n"
+			".previous"
+			: "=&r" (tmp), "=m" (lock->lock)
+			: "m"(lock->lock) : "memory");
+}
+
+static inline void spin_unlock(spinlock_t *lock)
+{
+	read_barrier();
+	lock->lock = 0;
+}
 
 #endif