Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Mon, 15 Apr 2019 17:53:08 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Stephane Eranian <eranian@google.com>
Cc:     linux-kernel@vger.kernel.org, tglx@linutronix.de,
        ak@linux.intel.com, kan.liang@intel.com, mingo@elte.hu,
        nelson.dsouza@intel.com, jolsa@redhat.com, tonyj@suse.com
Subject: Re: [PATCH v2 1/2] perf/core: add perf_ctx_resched() as global
 function
Message-ID: <20190415155308.GP14281@hirez.programming.kicks-ass.net>
References: <20190408173252.37932-1-eranian@google.com>
 <20190408173252.37932-2-eranian@google.com>
 <20190415154537.GH12232@hirez.programming.kicks-ass.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190415154537.GH12232@hirez.programming.kicks-ass.net>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon, Apr 15, 2019 at 05:45:37PM +0200, Peter Zijlstra wrote:
> On Mon, Apr 08, 2019 at 10:32:51AM -0700, Stephane Eranian wrote:
> > This patch add perf_ctx_resched() a global function that can be called
> > to force rescheduling of events based on event types. The function locks
> > both cpuctx and task_ctx internally. This will be used by a subsequent patch.
> 
> I took out the task_ctx and event_type arguments.

> +void perf_ctx_resched(struct perf_cpu_context *cpuctx)
> +{
> +	struct perf_event_context *task_ctx = cpuctx->task_ctx;
> +
> +	perf_ctx_lock(cpuctx, task_ctx);
> +	ctx_resched(cpuctx, task_ctx, EVENT_ALL|EVENT_CPU);
> +	perf_ctx_unlock(cpuctx, task_ctx);
> +}

Hmm... I might just rework the thing to:

  perf_pmu_resched(struct pmu *pmu);

As that is what we want; esp. in the light of that whole core context
rewrite that i'm still sitting on :/