Re: [tip:x86/core] x86: Enable Intel Turbo Boost Max Technology 3.0

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* tip-bot for Tim Chen <tipbot@xxxxxxxxx> wrote:

> Commit-ID:  5e76b2ab36b40ca33023e78725bdc69eafd63134
> Gitweb:     http://git.kernel.org/tip/5e76b2ab36b40ca33023e78725bdc69eafd63134
> Author:     Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
> AuthorDate: Tue, 22 Nov 2016 12:23:55 -0800
> Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> CommitDate: Thu, 24 Nov 2016 20:44:19 +0100
> 
> x86: Enable Intel Turbo Boost Max Technology 3.0

This patch doesn't build:

Note that this patch has to be redone anyway, as it won't even build:

> +#include <linux/sched.h>
> +#include <linux/cpumask.h>
> +#include <linux/cpuset.h>
> +#include <asm/mutex.h>
> +#include <linux/sched.h>
> +#include <linux/sysctl.h>
> +#include <linux/nodemask.h>

arch/x86/kernel/itmt.c:26:23: fatal error: asm/mutex.h: No such file or directory

> +config SCHED_ITMT
> +	bool "Intel Turbo Boost Max Technology (ITMT) scheduler support"
> +	depends on SCHED_MC && CPU_SUP_INTEL && X86_INTEL_PSTATE
> +	---help---
> +	  ITMT enabled scheduler support improves the CPU scheduler's decision
> +	  to move tasks to cpu core that can be boosted to a higher frequency
> +	  than others. It will have better performance at a cost of slightly
> +	  increased overhead in task migrations. If unsure say N here.

Argh, so the 'itmt' name really sucks as well - could we please make it something 
more obvious - like SCHED_INTEL_TURBO or so - and similarly rename the file as 
well?

The sched_intel_turbo.c file could thus host all things related to scheduler 
support of turbo frequencies - it shouldn't be named after the Intel acronym of 
the day...

Thanks,

	Ingo
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