Re: [PATCH] rwsem: Make rwsems use interrupt disabling spinlocks
From: Andrew Morton
Date: Fri Mar 11 2005 - 05:10:33 EST
Ingo Molnar <mingo@xxxxxxx> wrote:
> * Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> > > Ingo, we already have a touch_nmi_watchdog() in the sysrq code. It might be
> > > worth adding a touch_softlockup_watchdog() wherever we have a
> > > touch_nmi_watchdog().
> > ....or add touch_softlockup_watchdog to touch_nmi_watchdog() instead
> > and rename it tickle_watchdog() overtime.
> you mean like:
> +extern void touch_softlockup_watchdog(void);
This particular lockup happened because a huge stream of stuff was sent to
the serial console.
We already have a touch_nmi_watchdog() in that code.
We should arrange for touch_softlockup_watchdog() to be called whenever
touch_nmi_watchdog() is called.
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