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-rw-r--r--arch/x86/include/asm/mutex.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mutex.h b/arch/x86/include/asm/mutex.h
index 7d3a4827539..bc2a0b0dcea 100644
--- a/arch/x86/include/asm/mutex.h
+++ b/arch/x86/include/asm/mutex.h
@@ -3,3 +3,13 @@
#else
# include <asm/mutex_64.h>
#endif
+
+#ifndef __ASM_MUTEX_H
+#define __ASM_MUTEX_H
+/*
+ * For the x86 architecture, it allows any negative number (besides -1) in
+ * the mutex count to indicate that some other threads are waiting on the
+ * mutex.
+ */
+#define __ARCH_ALLOW_ANY_NEGATIVE_MUTEX_COUNT 1
+#endif