linux-kernel - Re: [PATCH v4 6/6] hwmon: use smp_call_on

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Message-ID: <20160421105724.GK29406@pali>
Date:	Thu, 21 Apr 2016 12:57:24 +0200
From:	Pali Rohár <pali.rohar@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xenproject.org, boris.ostrovsky@...cle.com,
	david.vrabel@...rix.com, mingo@...hat.com, peterz@...radead.org,
	Douglas_Warzecha@...l.com, jdelvare@...e.com, tglx@...utronix.de,
	hpa@...or.com, jeremy@...p.org, chrisw@...s-sol.org,
	akataria@...are.com, rusty@...tcorp.com.au,
	virtualization@...ts.linux-foundation.org, x86@...nel.org
Subject: Re: [PATCH v4 6/6] hwmon: use smp_call_on_cpu() for dell-smm i8k

On Tuesday 05 April 2016 21:31:52 Pali Rohár wrote:
> On Tuesday 05 April 2016 16:54:14 Guenter Roeck wrote:
> > On Tue, Apr 05, 2016 at 07:10:07AM +0200, Juergen Gross wrote:
> > > Use the smp_call_on_cpu() function to call system management
> > > mode on cpu 0.
> > > Make call secure by adding get_online_cpus() to avoid e.g. suspend
> > > resume cycles in between.
> > > 
> > > Signed-off-by: Juergen Gross <jgross@...e.com>
> > > ---
> > > V4: add call to get_online_cpus()
> > 
> > Pali, any chance to test this ?
> 
> I can test it, but just on machine where (probably) smm calls can be 
> send from any cpu... Need some time for testing and I believe I can do 
> that at the end of the week.

Sorry I had absolutely no more free time last weekend :-( And same
prediction is for this weekend and also next one...

-- 
Pali Rohár
pali.rohar@...il.com