From: Andi Kleen <a...@linux.intel.com>
For lock elision we (mostly) use generic elide() macros that
can be added to the lock code with minimal intrusion. Add a generic
version that does nothing and is used when RTM is not available.
Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
include/linux/elide.h | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
create mode 100644 include/linux/elide.h
diff --git a/include/linux/elide.h b/include/linux/elide.h
new file mode 100644
index 0000000..95b3ec2
--- /dev/null
+++ b/include/linux/elide.h
@@ -0,0 +1,18 @@
+#ifndef _LINUX_ELIDE_H
+#define _LINUX_ELIDE_H 1
+
+#include <linux/rtm.h>
+
+#ifdef CONFIG_RTM_LOCKS
+#include <asm/elide.h>
+#else
+#define elide_lock(l, f) 0
+#define elide_lock_adapt(f, l, a, ac) 0
+#define elide_unlock(l) 0
+#define elide_abort() do {} while (0)
+struct elision_config {};
+#define DEFAULT_ELISION_CONFIG {}
+#define TUNE_ELISION_CONFIG(a, b)
+#endif
+
+#endif
--
1.7.7.6
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
