From: Guru Prasad <gurupras@buffalo.edu>
To: linux-pm@vger.kernel.org, linux-newbie@vger.kernel.org
Subject: Disallow process from being scheduled for specific duration
Date: Mon, 30 Jun 2014 11:44:47 +0530 [thread overview]
Message-ID: <CAMefCkAqpSb9x-uncxwr=7r0B-ms+w9M6X3DgV2rfe2in3NBYA@mail.gmail.com> (raw)
Hi all,
First, I would like to establish that I'm fairly new to the scheduler
portion of kernel code.
I'm trying to implement a crude form of the rate limiting approaches
described in:
Currentcy - http://cseweb.ucsd.edu/~vahdat/papers/usenix03.pdf
Pixie - http://www.eecs.harvard.edu/~mdw/papers/pixie-sensys08.pdf
My current design is as follows ('task' refers to the current process'
task_struct):
- I have augmented a hardware simulator(Gem5) with registers that
keep track of energy usage.
- Upon every call to __schedule(), subtract the register value
from 'task->available_energy'
- If 'task->available_energy' is negative:
- Compute 'replenish_time' as time taken to replenish energy
- Call schedule_timeout(msecs_to_jiffies(replenish_time))
- Reset energy registers
I'm primarily looking to disallow scheduling of the current task for
the period defined as 'replenish_time'.
I can see how it might be wrong to call schedule_timeout() from within
__schedule().
If so, what would be the right way of designing such a mechanism?
Regards
reply other threads:[~2014-06-30 6:14 UTC|newest]
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