From: "stephane eranian" <eranian@googlemail.com>
To: "Andi Kleen" <andi@firstfloor.org>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de,
"Shaohua Li" <shaohua.li@intel.com>
Subject: Re: NMI watchdog setup_lapic_nmi_watchdog() problem
Date: Wed, 8 Oct 2008 01:57:45 +0200 [thread overview]
Message-ID: <7c86c4470810071657l691a2319uc3edbe8ec7c473b7@mail.gmail.com> (raw)
In-Reply-To: <20081007234529.GC7971@one.firstfloor.org>
Andi,
On Wed, Oct 8, 2008 at 1:45 AM, Andi Kleen <andi@firstfloor.org> wrote:
>> If you remove the 'cheap hack', disabling/enabling works. That's why
>> I'd like to better
>> understand was is going on with suspend/resume.
>
> The hack was done because there wasn't an available CPU global enable flag
> for the nmi watchdog. So resume would possible reenable it unnecessarily
> If there was one it could just check that.
>
I am not sure what you mean by 'CPU global enable flag'.
Are you talking about a per-cpu variable or a truly global variable?
Isn't that what nmi_active is today?
As for per-cpu, there is wd_enabled.
prev parent reply other threads:[~2008-10-07 23:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-07 15:45 stephane eranian
2008-10-07 20:21 ` Andrew Morton
2008-10-07 21:10 ` stephane eranian
2008-10-07 23:45 ` Andi Kleen
2008-10-07 23:57 ` stephane eranian [this message]
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