Re: [PATCH] Support disabling of sched autoprefetcher from command line

[Jeff Law <law@redhat.com>]

On 02/01/2015 12:55 AM, Maxim Kuvyrkov wrote:
> Hi,
>
> It turned out that the values for PARAM_SCHED_AUTOPREF_QUEUE_DEPTH
> that I initially selected were unfortunate.  The value of "-1" is
> special in parameter handling code, and it can't be used on command
> line.  This makes it impossible to disable scheduler autoprefetcher
> from command line ("-1" corresponds to "disable autoprefetcher
> model").
>
> This patch shifts the set of a allowed values for
> PARAM_SCHED_AUTOPREF_QUEUE_DEPTH by +1, so that the "disable" value
> is "0".
>
> OK for stage 1?  Tested on arm-linux-gnueabihf, and I will bootstrap
> and test the patch on trunk before committing.
>
> Thank you,
>
> -- Maxim Kuvyrkov www.linaro.org
>
>
>
> 0002-Support-disabling-of-sched-autoprefetcher-from-comma.patch
>
>
> From b86515013dec067419d16d11c138ba8b74ede1c5 Mon Sep 17 00:00:00
> 2001 From: Maxim Kuvyrkov<maxim.kuvyrkov@linaro.org> Date: Sun, 18
> Jan 2015 13:22:56 +0000 Subject: [PATCH 2/2] Support disabling of
> sched autoprefetcher from command line
>
> * config/arm/arm.c (arm_cortex_a15_tune, arm_cortex_a57_tune):
> Update. * haifa-sched.c: Increase values for
> PARAM_SCHED_AUTOPREF_QUEUE_DEPTH by +1 throughout.
> (rank_for_schedule, autopref_multipass_dfa_lookahead_guard): Update.
> * params.def (PARAM_SCHED_AUTOPREF_QUEUE_DEPTH): Update.
OK once the final bootstrap and testing are complete.
Jeff