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authorIngo Molnar <mingo@elte.hu>2008-07-29 00:07:55 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-29 00:07:55 +0200
commitcb28a1bbdb4790378e7366d6c9ee1d2340b84f92 (patch)
tree316436f77dac75335fd2c3ef5f109e71606c50d3 /arch/sparc/include/asm/rwsem-const.h
parentdma-coherent: add documentation to new interfaces (diff)
parentMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dto... (diff)
downloadlinux-cb28a1bbdb4790378e7366d6c9ee1d2340b84f92.tar.xz
linux-cb28a1bbdb4790378e7366d6c9ee1d2340b84f92.zip
Merge branch 'linus' into core/generic-dma-coherent
Conflicts: arch/x86/Kconfig Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sparc/include/asm/rwsem-const.h')
-rw-r--r--arch/sparc/include/asm/rwsem-const.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/rwsem-const.h b/arch/sparc/include/asm/rwsem-const.h
new file mode 100644
index 000000000000..a303c9d64d84
--- /dev/null
+++ b/arch/sparc/include/asm/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 */