Messages in this thread | | | Subject | Re: [PATCH] nohz: remove "Switched to NOHz mode" debugging messages | From | Joe Perches <> | Date | Tue, 23 Aug 2011 12:12:57 -0700 |
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On Tue, 2011-08-23 at 13:20 +0200, Heiko Carstens wrote: > From: Heiko Carstens <heiko.carstens@de.ibm.com> > > When performing cpu hotplug tests the kernel printk log buffer gets flooded > with pointless "Switched to NOHz mode..." messages. Especially when afterwards > analyzing a dump this might have removed more interesting stuff out of the > buffer. > Assuming that switching to NOHz mode simply works just remove the printk.
> diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c [] > - > - printk(KERN_INFO "Switched to NOHz mode on CPU #%d\n", smp_processor_id());
Though I don't know if these are actually particularly useful messages, perhaps pr_info_ratelimited() might be appropriate instead.
> @@ -793,10 +791,8 @@ void tick_setup_sched_timer(void) > - printk(KERN_INFO "Switched to NOHz mode on CPU #%d\n", smp_processor_id());
and here.
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