From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: runtime disable for softlockup
Date: Tue, 1 Aug 2006 14:38:26 -0400 [thread overview]
Message-ID: <20060801183826.GM22240@redhat.com> (raw)
The softlockup detector is damned handy, but a real pain if it
prevents your distro installer from running.
As a 'worse case scenario', with the diff below, users can
disable it at boot time, and still manage to get a box installed.
Signed-off-by: Dave Jones <davej@redhat.com>
--- 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
@@ -640,6 +640,15 @@ 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 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
next reply other threads:[~2006-08-01 18:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-01 18:38 Dave Jones [this message]
2006-08-04 7:48 ` runtime disable for softlockup Andrew Morton
2006-08-04 17:01 ` Dave Jones
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