lkml.org 
[lkml]   [2007]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [patch] sched: fix SysRq-N (normalize RT tasks)
Date
Ingo Molnar <mingo@elte.hu> writes:

> From: Ingo Molnar <mingo@elte.hu>
> Subject: [patch] sched: fix SysRq-N (normalize RT tasks)
>
> Gene Heskett reported the following problem while testing CFS: SysRq-N
> is not always effective in normalizing tasks back to SCHED_OTHER.
>
> the reason for that turns out to be the following bug:
> normalize_rt_tasks() uses for_each_process() to iterate through all
> tasks in the system. The problem is, this method does not iterate
> through all tasks, it iterates through all thread groups. The proper
> mechanism to enumerate all tasks is to use a do_each_thread() +
> while_each_thread() loop.

Was this always a bug or did the meaning of for_each_process() change
since this code was added?

--
Måns Rullgård
mans@mansr.com

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-14 21:13    [W:0.039 / U:1.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site