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Message-ID: <yw1xfy4utksl.fsf@thrashbarg.mansr.com> Date: Thu, 14 Jun 2007 20:09:46 +0100 From: Måns Rullgård <mans@...sr.com> To: linux-kernel@...r.kernel.org Subject: Re: [patch] sched: fix SysRq-N (normalize RT tasks) Ingo Molnar <mingo@...e.hu> writes: > From: Ingo Molnar <mingo@...e.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@...sr.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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