From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
RT <linux-rt-users@vger.kernel.org>
Subject: [PATCH RT] have x86_64 nmi watchdog also count irq 0
Date: Wed, 20 Jun 2007 14:51:03 -0400 [thread overview]
Message-ID: <1182365463.15228.39.camel@localhost.localdomain> (raw)
I was getting false reports about NMI lockups on CPU 3. For some reason
CPU 0,1 and 2 where using apic timer, and CPU 3 was using the irq 0
timer.
This patch makes the NMI watchdog count both the apic timer and the irq0
timer.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Index: linux-2.6-rt-test/arch/x86_64/kernel/nmi.c
===================================================================
--- linux-2.6-rt-test.orig/arch/x86_64/kernel/nmi.c
+++ linux-2.6-rt-test/arch/x86_64/kernel/nmi.c
@@ -938,7 +938,7 @@ int notrace __kprobes nmi_watchdog_tick(
touched = 1;
}
- sum = read_pda(apic_timer_irqs);
+ sum = read_pda(apic_timer_irqs) + kstat_cpu(cpu).irqs[0];
if (__get_cpu_var(nmi_touch)) {
__get_cpu_var(nmi_touch) = 0;
next reply other threads:[~2007-06-20 18:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-20 18:51 Steven Rostedt [this message]
2007-06-21 12:20 ` Konstantin Baydarov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1182365463.15228.39.camel@localhost.localdomain \
--to=rostedt@goodmis.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®