Re: [tip:timers/core] hrtimers: Support resuming with two or more CPUs online (but stopped)

From: Artem Savkov <artem.savkov@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: David Vrabel <david.vrabel@citrix.com>,
	Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
	LKML <linux-kernel@vger.kernel.org>,
	konrad.wilk@oracle.com, john.stultz@linaro.org,
	xen-devel@lists.xen.org
Subject: Re: [tip:timers/core] hrtimers: Support resuming with two or more CPUs online (but stopped)
Date: Fri, 5 Jul 2013 14:45:58 +0400	[thread overview]
Message-ID: <20130705104558.GC4033@cpv436-motbuntu> (raw)
In-Reply-To: <alpine.DEB.2.02.1307051229190.32106@ionos.tec.linutronix.de>

On Fri, Jul 05, 2013 at 12:36:50PM +0200, Thomas Gleixner wrote:
> On Fri, 5 Jul 2013, Thomas Gleixner wrote:
> > On Fri, 5 Jul 2013, David Vrabel wrote:
> > You failed to CC Artem :(
> Second thought.
> Where is that warning? Can't find it in neither in Linus tree nor in tip
> > > > [ 4363.083800] WARNING: CPU: 0 PID: 3977 at kernel/smp.c:385 smp_call_function_many+0xbd/0x2c0()
> All I see there is:
>         WARN_ON_ONCE(cpu_online(this_cpu) && irqs_disabled()
>                      && !oops_in_progress && !early_boot_irqs_disabled);

It's in linux-next.git, not sure where it was merged from
commit 7f4a1d40a6311b7cb52d0f0061cb904d041c6dbc
Author: Chuansheng Liu <chuansheng.liu@intel.com>
Date:   Wed Jul 3 10:20:26 2013 +1000

    smp: Give WARN()ing when calling smp_call_function_many()/single() in serving irq


-- 
Regards,
    Artem