Commit 339ce005 authored Jun 19, 2012 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Jun 29, 2012

perf tools: Adding round_up/round_down macros

Adding round_up and round_down macros. They will be used in upcoming
patches.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: Benjamin Redelings <benjamin.redelings@nescent.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/r/1340120894-9465-21-git-send-email-jolsa@redhat.com

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 1388d715

tools/perf/util/include/linux/kernel.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -108,4 +108,14 @@ int eprintf(int level,
		#define pr_debug3(fmt, ...) pr_debugN(3, pr_fmt(fmt), ##__VA_ARGS__)
		#define pr_debug4(fmt, ...) pr_debugN(4, pr_fmt(fmt), ##__VA_ARGS__)

		/*
		* This looks more complex than it should be. But we need to
		* get the type for the ~ right in round_down (it needs to be
		* as wide as the result!), and we want to evaluate the macro
		* arguments just once each.
		*/
		#define __round_mask(x, y) ((__typeof__(x))((y)-1))
		#define round_up(x, y) ((((x)-1) \| __round_mask(x, y))+1)
		#define round_down(x, y) ((x) & ~__round_mask(x, y))

		#endif