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Message-ID: <20170914085917.GA24723@ls3530> Date: Thu, 14 Sep 2017 10:59:17 +0200 From: Helge Deller <deller@....de> To: Thomas Gleixner <tglx@...utronix.de> Cc: LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Borislav Petkov <bp@...en8.de>, Andrew Morton <akpm@...ux-foundation.org>, Sebastian Siewior <bigeasy@...utronix.de>, Nicholas Piggin <npiggin@...il.com>, Don Zickus <dzickus@...hat.com>, Chris Metcalf <cmetcalf@...lanox.com>, Ulrich Obergfell <uobergfe@...hat.com>, linux-parisc@...r.kernel.org, Helge Deller <deller@....de> Subject: Re: [patch V2 04/29] parisc: Use lockup_detector_stop() * Thomas Gleixner <tglx@...utronix.de>: > The broken lockup_detector_suspend/resume() interface is going away. Use > the new lockup_detector_soft_poweroff() interface to stop the watchdog from > the busy looping power off routine. > > Signed-off-by: Thomas Gleixner <tglx@...utronix.de> > Cc: Don Zickus <dzickus@...hat.com> > Cc: Chris Metcalf <cmetcalf@...lanox.com> > Cc: linux-parisc@...r.kernel.org > Cc: Peter Zijlstra <peterz@...radead.org> > Cc: Sebastian Siewior <bigeasy@...utronix.de> > Cc: Nicholas Piggin <npiggin@...il.com> > Cc: Ulrich Obergfell <uobergfe@...hat.com> > Cc: Borislav Petkov <bp@...en8.de> > Cc: Andrew Morton <akpm@...ux-foundation.org> > Cc: Helge Deller <deller@....de> > Link: http://lkml.kernel.org/r/20170831073053.281414373@linutronix.de > > --- > arch/parisc/kernel/process.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/arch/parisc/kernel/process.c > +++ b/arch/parisc/kernel/process.c > @@ -146,7 +146,7 @@ void machine_power_off(void) > > /* prevent soft lockup/stalled CPU messages for endless loop. */ > rcu_sysrq_start(); > - lockup_detector_suspend(); > + lockup_detector_soft_poweroff(); > for (;;); > } Thomas, thanks for cleaning that up. You may add to patches 03/04: Acked-by: Helge Deller <deller@....de> On a side-note, there is sadly no general function like turn_off_all_kind_of_runtime_hang_detectors() which turns off *all* detectors at once (including soft lockup detector). I've seen another detector complaing at runtime that we were hanging here. I would need to dig up more info if you are interested... Helge
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