Similar to "likely" and "unlikely" that are used in kernel, defined "if_PT" and "if_PF" for "predict true" and "predict false" respectively.
Signed-off-by: Yevgeny Kliteynik <klit...@dev.mellanox.co.il> --- include/complib/cl_types_osd.h | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/include/complib/cl_types_osd.h b/include/complib/cl_types_osd.h index ce1a452..f9abb28 100644 --- a/include/complib/cl_types_osd.h +++ b/include/complib/cl_types_osd.h @@ -1,6 +1,6 @@ /* * Copyright (c) 2004-2009 Voltaire, Inc. All rights reserved. - * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved. + * Copyright (c) 2002-2012 Mellanox Technologies LTD. All rights reserved. * Copyright (c) 1996-2003 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two @@ -64,6 +64,21 @@ BEGIN_C_DECLS #include <inttypes.h> #include <assert.h> #include <string.h> + +/* + * Branch prediction hints + */ +#if defined(HAVE_BUILTIN_EXPECT) +#define CL_PREDICT_TRUE(exp) __builtin_expect( ((uintptr_t)(exp)), 1 ) +#define CL_PREDICT_FALSE(exp) __builtin_expect( ((uintptr_t)(exp)), 0 ) +#else +#define CL_PREDICT_TRUE(exp) (exp) +#define CL_PREDICT_FALSE(exp) (exp) +#endif + +#define if_PF(cond) if(CL_PREDICT_FALSE(cond)) +#define if_PT(cond) if(CL_PREDICT_TRUE(cond)) + #if defined (_DEBUG_) #define CL_ASSERT assert #else /* _DEBUG_ */ -- 1.7.11.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
