linux-kernel - RE: Bug 71331 - mlock yields processor to lower priority process

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Date:	Fri, 21 Mar 2014 12:18:45 +0000
From:	<jimmie.davis@...com.com>
To:	<umgwanakikbuti@...il.com>, <artem_fetishev@...m.com>
CC:	<peterz@...radead.org>, <kosaki.motohiro@...fujitsu.com>,
	<linux-kernel@...r.kernel.org>
Subject: RE: Bug 71331 - mlock yields processor to lower priority process

 

>How is that different from any other time a task has to yield the CPU
>for a bit?  While your high priority task is blocked for whatever
>reason, a lower priority task gets to use the CPU.

 
As the submitter of the bug, let me give you my perspective.  SCHED_FIFO means run my task until it blocks or a higher priority task pre-empts it.  Period.

mlock() doesn't block.  check the man page.

Any other way and you are not able to use priority based scheduling.   
 

--bud davis




 

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