linux-kernel - Re: [RFCv2 2/6] sched: Introduce switch to enable TurboSched mode

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Message-Id: <fd7bd5e7-8d89-2c0b-1f3d-d229b7af5757@linux.ibm.com>
Date:   Thu, 16 May 2019 21:45:42 +0530
From:   Parth Shah <parth@...ux.ibm.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        mingo@...hat.com, dietmar.eggemann@....com, dsmythies@...us.net
Subject: Re: [RFCv2 2/6] sched: Introduce switch to enable TurboSched mode



On 5/15/19 10:00 PM, Peter Zijlstra wrote:
> On Wed, May 15, 2019 at 07:23:18PM +0530, Parth Shah wrote:
>> +void turbo_sched_get(void)
>> +{
>> +	spin_lock(&turbo_sched_lock);
>> +	if (!turbo_sched_count++)
>> +		static_branch_enable(&__turbo_sched_enabled);
>> +	spin_unlock(&turbo_sched_lock);
>> +}
> 
> Muwhahaha, you didn't test this code, did you?
> 

yeah, I didn't see task-sleep problem coming in.
I will change to mutex.

Thanks for pointing out.