summaryrefslogtreecommitdiff
path: root/include/asm-sparc64/rwsem-const.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-sparc64/rwsem-const.h')
-rw-r--r--include/asm-sparc64/rwsem-const.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-sparc64/rwsem-const.h b/include/asm-sparc64/rwsem-const.h
new file mode 100644
index 000000000000..a303c9d64d84
--- /dev/null
+++ b/include/asm-sparc64/rwsem-const.h
@@ -0,0 +1,12 @@
+/* rwsem-const.h: RW semaphore counter constants. */
+#ifndef _SPARC64_RWSEM_CONST_H
+#define _SPARC64_RWSEM_CONST_H
+
+#define RWSEM_UNLOCKED_VALUE 0x00000000
+#define RWSEM_ACTIVE_BIAS 0x00000001
+#define RWSEM_ACTIVE_MASK 0x0000ffff
+#define RWSEM_WAITING_BIAS 0xffff0000
+#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS
+#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
+
+#endif /* _SPARC64_RWSEM_CONST_H */