From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: "Yan, Zheng" <zheng.z.yan@intel.com>
Cc: eranian@google.com, mingo@elte.hu, andi@firstfloor.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] perf/x86: Uncore Filter support for SandyBridge-EP
Date: Wed, 27 Jun 2012 11:42:47 +0200 [thread overview]
Message-ID: <1340790167.10063.3.camel@twins> (raw)
In-Reply-To: <1340780953-21130-2-git-send-email-zheng.z.yan@intel.com>
On Wed, 2012-06-27 at 15:09 +0800, Yan, Zheng wrote:
> +static void snbep_uncore_put_constraint(struct intel_uncore_box *box,
> + struct perf_event *event)
> +{
> + struct intel_uncore_extra_reg *er;
> + struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
> +
> + if (box->phys_id < 0 || !reg1->alloc)
> + return;
> +
> + er = &box->shared_regs[reg1->idx];
> + atomic_sub(1, &er->ref);
We have atomic_dec() for this ;-)
> + reg1->alloc = 0;
> +}
next prev parent reply other threads:[~2012-06-27 9:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 7:09 [PATCH 1/2] perf/x86: Use 0xff as pseudo code for fixed uncore event Yan, Zheng
2012-06-27 7:09 ` [PATCH 2/2] perf/x86: Uncore Filter support for SandyBridge-EP Yan, Zheng
2012-06-27 9:42 ` Peter Zijlstra [this message]
2012-06-27 10:01 ` Peter Zijlstra
2012-06-27 10:06 ` Peter Zijlstra
2012-06-28 1:30 ` Yan, Zheng
2012-06-28 10:10 ` Peter Zijlstra
2012-06-27 13:06 ` [PATCH 1/2] perf/x86: Use 0xff as pseudo code for fixed uncore event Stephane Eranian
2012-06-27 13:10 ` Peter Zijlstra
2012-07-06 6:30 ` [tip:perf/core] " tip-bot for Yan, Zheng
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