linux-kernel - [PATCH] init/main.c: refactor maxcpus()

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Message-Id: <1281864933-6145-1-git-send-email-namhyung@gmail.com>
Date:	Sun, 15 Aug 2010 18:35:33 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] init/main.c: refactor maxcpus()

get_option() requires 2nd arg to be a pointer to int but setup_max_cpus is a
pointer to unsigned int. Use max_cpus instead and update setup_max_cpus only
if given value is in the proper range.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
---
 init/main.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/init/main.c b/init/main.c
index 86cbfd0..b06b8f2 100644
--- a/init/main.c
+++ b/init/main.c
@@ -165,9 +165,13 @@ early_param("nr_cpus", nrcpus);
 
 static int __init maxcpus(char *str)
 {
-	get_option(&str, &setup_max_cpus);
-	if (setup_max_cpus == 0)
-		arch_disable_smp_support();
+	int max_cpus;
+
+	get_option(&str, &max_cpus);
+	if (max_cpus == 0)
+		nosmp(NULL);
+	else if (0 < max_cpus && max_cpus < NR_CPUS)
+		setup_max_cpus = max_cpus;
 
 	return 0;
 }
-- 
1.7.0.4

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