From: Andi Kleen <[email protected]> Add generic noop macros (act like transaction aborted) for RTM. The main use case is an occasional _xtest() added to generic code, without needing ifdefs. On x86+RTM this will use real TSX instructions.
Signed-off-by: Andi Kleen <[email protected]> --- include/linux/rtm.h | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) create mode 100644 include/linux/rtm.h diff --git a/include/linux/rtm.h b/include/linux/rtm.h new file mode 100644 index 0000000..887b221 --- /dev/null +++ b/include/linux/rtm.h @@ -0,0 +1,15 @@ +#ifndef _LINUX_RTM +#define _LINUX_RTM 1 + +#ifdef CONFIG_RTM_LOCKS +#include <asm/rtm.h> +#else +/* Make transactions appear as always abort */ +#define _XBEGIN_STARTED 0 +#define _xbegin() 1 +#define _xtest() 0 +#define _xend() do {} while (0) +#define _xabort(x) do {} while (0) +#endif + +#endif -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
