Commit-ID: 339ce005091b156c2af4c016c6ba9c1f87cd826a Gitweb: http://git.kernel.org/tip/339ce005091b156c2af4c016c6ba9c1f87cd826a Author: Jiri Olsa <jolsa@xxxxxxxxxx> AuthorDate: Tue, 19 Jun 2012 17:48:11 +0200 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Fri, 29 Jun 2012 15:25:28 -0300 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@xxxxxxxxxx> Cc: Arun Sharma <asharma@xxxxxx> Cc: Benjamin Redelings <benjamin.redelings@xxxxxxxxxxx> Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx> Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxxx> Cc: Frank Ch. Eigler <fche@xxxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Robert Richter <robert.richter@xxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Tom Zanussi <tzanussi@xxxxxxxxx> Cc: Ulrich Drepper <drepper@xxxxxxxxx> Link: http://lkml.kernel.org/r/1340120894-9465-21-git-send-email-jolsa@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/util/include/linux/kernel.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/tools/perf/util/include/linux/kernel.h b/tools/perf/util/include/linux/kernel.h index 1eb804f..b6842c1 100644 --- a/tools/perf/util/include/linux/kernel.h +++ b/tools/perf/util/include/linux/kernel.h @@ -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 -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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