From: Laurence Oberman <loberman@redhat.com>
To: linux-kernel@vger.kernel.org, loberman@redhat.com
Subject: [PATCH] init/main.c Enable watchdog_thresh control from kernel line
Date: Wed, 24 Oct 2018 11:21:24 -0400 [thread overview]
Message-ID: <1540394484-18252-1-git-send-email-loberman@redhat.com> (raw)
Both graphics and serial consoels are exposed to hard lockups
when handling a large amount of messaging. The kernel watchdog_thresh
parameter up to now has not been available to be set on the kernel line for
early boot.
This patch allows the setting of watchdog_thresh to be increased
when needed to avoid the hard lockups in the console code.
Signed-off-by: Laurence Oberman <loberman@redhat.com>
---
init/main.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/init/main.c b/init/main.c
index e4a3160..5882750 100644
--- a/init/main.c
+++ b/init/main.c
@@ -977,6 +977,15 @@ static int __init set_debug_rodata(char *str)
__setup("rodata=", set_debug_rodata);
#endif
+static int __init
+is_watchdog_thresh_setup(char *str)
+{
+ get_option(&str, &watchdog_thresh);
+ return 1;
+}
+__setup("watchdog_thresh=", is_watchdog_thresh_setup);
+
+
#ifdef CONFIG_STRICT_KERNEL_RWX
static void mark_readonly(void)
{
--
1.8.3.1
next reply other threads:[~2018-10-24 15:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-24 15:21 Laurence Oberman [this message]
2018-10-24 15:32 ` [PATCH] init/main.c Enable watchdog_thresh control from kernel line Randy Dunlap
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