linux-kernel - Re: Thread Scheduler

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Message-ID: <CAK2H+edMBcJhqe8=hQvCRYAm6GsqnoqwqU5By_FD6qMyoXvCjQ@mail.gmail.com>
Date:	Sun, 23 Mar 2014 07:05:32 -0700
From:	Mark Knecht <markknecht@...il.com>
To:	Mahmood Naderan <nt_mahmood@...oo.com>
Cc:	Mike Galbraith <umgwanakikbuti@...il.com>,
	Jack Carrozzo <jack@...pinc.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Thread Scheduler

On Sun, Mar 23, 2014 at 4:01 AM, Mahmood Naderan <nt_mahmood@...oo.com> wrote:
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>>On Thursday, March 20, 2014 6:53 AM, Mike Galbraith <umgwanakikbuti@...il.com> wrote:
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>>marge:~ # man -k setscheduler getscheduler
>>sched_setscheduler (2) - set and get scheduling policy/parameters
>>sched_setscheduler (3p) - set scheduling policy and parameters (REALTIME)
>>sched_getscheduler (2) - set and get scheduling policy/parameters
>>sched_getscheduler (3p) - get scheduling policy (REALTIME)
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> OK I read them and it seems that in order to change the scheduler, I have to write a C code and call the sched_set* functions. Please correct that if I am wrong.
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> So in order to use my custom scheduler, I have to do the following steps.
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> 1- Write my  code using the APIs and save that in kernel/sched_custom.c
> 2- Invoke sched_custom.c in kernel/sched.c
> 3- Recompile the kernel source
> 4- Reboot using the new kernel
> 5- write a C code and call sched_setschedule() to use my scheduler.
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> Is that all? Your reply is appreciated.
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>
> Regards,
> Mahmood
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In terms of changing the scheduler I think that you possibly missed
reading Documentation/block/switching-sched.txt in the kernel's
documentation directory.

HTH,
Mark
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