linux-kernel - Re: [PATCH V2] drivers: CCI: fix used_mask init in validate

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Date:	Mon, 13 Apr 2015 13:41:22 +0100
From:	Will Deacon <will.deacon@....com>
To:	Mark Rutland <mark.rutland@....com>
Cc:	"msalter@...hat.com" <msalter@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Punit Agrawal <Punit.Agrawal@....com>,
	Suzuki Poulose <Suzuki.Poulose@....com>,
	"arm@...nel.org" <arm@...nel.org>
Subject: Re: [PATCH V2] drivers: CCI: fix used_mask init in validate_group()

On Thu, Apr 09, 2015 at 04:36:29PM +0100, Mark Rutland wrote:
> On Thu, Apr 09, 2015 at 03:57:05PM +0100, Mark Salter wrote:
> > Currently in validate_group(), there is a static initializer
> > for fake_pmu.used_mask which is based on CPU_BITS_NONE but
> > the used_mask array size is based on CCI_PMU_MAX_HW_EVENTS.
> > CCI_PMU_MAX_HW_EVENTS is not based on NR_CPUS, so CPU_BITS_NONE
> > is not correct and will cause a build failure if NR_CPUS
> > is set high enough to make CPU_BITS_NONE larger than used_mask.
> > 
> > Signed-off-by: Mark Salter <msalter@...hat.com>
> 
> Reviewed-by: Mark Rutland <mark.rutland@....com>
> 
> Arnd, Olof, are you happy to take this via arm-soc?
> 
> My (broken) patch went via Will's tree because of a perf dependency, but
> other CCI patches have gone via you guys.

Yeah, arm-soc is the best place for this. You should resend to
arm@...nel.org as a new patch with the relevant acks.

Will
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