linux-kernel - Re: [PATCH] cpufreq: governor: remove copy_prev_load from 'struct cpu_dbs_common

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Date:	Mon, 9 Jun 2014 12:52:48 +0200
From:	Pavel Machek <pavel@....cz>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	rjw@...ysocki.net, linaro-kernel@...ts.linaro.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	arvind.chauhan@....com, srivatsa.bhat@...ux.vnet.ibm.com,
	svaidy@...ux.vnet.ibm.com, ego@...ux.vnet.ibm.com
Subject: Re: [PATCH] cpufreq: governor: remove copy_prev_load from 'struct
 cpu_dbs_common_info'

On Mon 2014-06-09 10:54:17, Viresh Kumar wrote:
> 'copy_prev_load' was recently added by commit: 18b46ab (cpufreq: governor: Be
> friendly towards latency-sensitive bursty workloads).
> 
> It actually is a bit redundant as we also have 'prev_load' which can store any
> integer value and can be used instead of 'copy_prev_load' by setting it to zero
> when we don't want to use previous load.
> 
> So, drop 'copy_prev_load' and use 'prev_load' instead.
> 
> Update comments as well to make it more clear.
> 
> There is another change here which was probably missed by Srivatsa during the
> last version of updates he made. The unlikely in the 'if' statement was covering
> only half of the condition and the whole line should actually come under it.
> 
> Also checkpatch is made more silent as it was reporting this (--strict option):
> 
> CHECK: Alignment should match open parenthesis
> +		if (unlikely(wall_time > (2 * sampling_rate) &&
> +						j_cdbs->prev_load)) {
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>

Acked-by: Pavel Machek <pavel@....cz>

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