Allow softlockup to be runtime disabled.

From: Dave Jones
Date: Mon Jun 11 2007 - 23:14:10 EST


It's useful sometimes to disable the softlockup checker at boottime.
Especially if it triggers during a distro install.

Signed-off-by: Dave Jones <davej@xxxxxxxxxx>

--- linux-2.6/init/main.c~ 2006-03-05 00:45:51.000000000 -0500
+++ linux-2.6/init/main.c 2006-03-05 00:49:41.000000000 -0500
@@ -732,6 +732,15 @@ static void __init do_basic_setup(void)
do_initcalls();
}

+static int __initdata nosoftlockup;
+
+static int __init nosoftlockup_setup(char *str)
+{
+ nosoftlockup = 1;
+ return 1;
+}
+__setup("nosoftlockup", nosoftlockup_setup);
+
static void __init do_pre_smp_initcalls(void)
{
extern int spawn_ksoftirqd(void);
@@ -649,7 +657,8 @@ static void do_pre_smp_initcalls(void)
migration_init();
#endif
spawn_ksoftirqd();
- spawn_softlockup_task();
+ if (!nosoftlockup)
+ spawn_softlockup_task();
}

static void run_init_process(char *init_filename)

--
http://www.codemonkey.org.uk
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/