linux-kernel - [tip:perf/core] perf tools: Use cpu/possible instead of cpu/ kernel

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Date:	Tue, 22 Apr 2014 11:34:19 -0700
From:	tip-bot for Don Zickus <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	tglx@...utronix.de, namhyung@...nel.org, jolsa@...hat.com,
	dzickus@...hat.com
Subject: [tip:perf/core] perf tools: Use cpu/possible instead of cpu/
 kernel_max

Commit-ID:  f5b1f4e483d55a88ed120e2c62b45ba5b939fa72
Gitweb:     http://git.kernel.org/tip/f5b1f4e483d55a88ed120e2c62b45ba5b939fa72
Author:     Don Zickus <dzickus@...hat.com>
AuthorDate: Mon, 7 Apr 2014 14:55:22 -0400
Committer:  Jiri Olsa <jolsa@...hat.com>
CommitDate: Tue, 22 Apr 2014 17:39:16 +0200

perf tools: Use cpu/possible instead of cpu/kernel_max

The system's max configuration is represented by cpu/possible and
cpu/kernel_max can be huge (4096 vs. 128), so save space by keeping
smaller structures.

Signed-off-by: Don Zickus <dzickus@...hat.com>
Reviewed-by: Namhyung Kim <namhyung@...nel.org>
Link: http://lkml.kernel.org/r/1396896924-129847-3-git-send-email-dzickus@redhat.com
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
---
 tools/perf/util/cpumap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 526da02..c4e55b7 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -365,7 +365,7 @@ static void set_max_cpu_num(void)
 		goto out;
 
 	/* get the highest possible cpu number for a sparse allocation */
-	ret = snprintf(path, PATH_MAX, "%s/devices/system/cpu/kernel_max", mnt);
+	ret = snprintf(path, PATH_MAX, "%s/devices/system/cpu/possible", mnt);
 	if (ret == PATH_MAX) {
 		pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
 		goto out;
--
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