linux-kernel - [PATCH 2/2] perf tools: Remove unused next_pow2() and rename next_pow2

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Date:	Fri, 13 Dec 2013 10:53:36 +0200
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 2/2] perf tools: Remove unused next_pow2() and rename next_pow2_l()

The fixed version of 'next_pow2_l()' does not call
'next_pow2()' anymore, so it is unused, so remove
it and rename 'next_pow2_l()' to 'next_pow2()'.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/util/evlist.c | 2 +-
 tools/perf/util/util.h   | 9 +--------
 2 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 0b31cee..327a1a4 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -736,7 +736,7 @@ static long parse_pages_arg(const char *str, unsigned long min,
 		/* leave number of pages at 0 */
 	} else if (!is_power_of_2(pages)) {
 		/* round pages up to next power of 2 */
-		pages = next_pow2_l(pages);
+		pages = next_pow2(pages);
 		if (!pages)
 			return -EINVAL;
 		pr_info("rounding mmap pages size to %lu bytes (%lu pages)\n",
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index ae609fe..3860d76 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -275,14 +275,7 @@ bool is_power_of_2(unsigned long n)
 	return (n != 0 && ((n & (n - 1)) == 0));
 }
 
-static inline unsigned next_pow2(unsigned x)
-{
-	if (!x)
-		return 1;
-	return 1ULL << (32 - __builtin_clz(x - 1));
-}
-
-static inline unsigned long next_pow2_l(unsigned long x)
+static inline unsigned long next_pow2(unsigned long x)
 {
 	int leading_zeros;
 
-- 
1.7.11.7

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