From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: joakim.tjernlund@transmode.se
Cc: 'linuxppc-dev Development' <linuxppc-dev@ozlabs.org>
Subject: Re: HR timers on PowerPC 83xx
Date: Fri, 25 Apr 2008 19:59:32 +0400 [thread overview]
Message-ID: <4811FFE4.2020203@ru.mvista.com> (raw)
In-Reply-To: <1209135051.31117.19.camel@gentoo-jocke.transmode.se>
Joakim Tjernlund wrote:
>>>Trying to understand what is needed to make nanosleep() and friends to
>>>have better resolution than HZ on my 83xx CPU. Is this possible
>>>and what CONFIG options do I need to enable? Kernel is 2.6.25
>> Should be possible with CONFIG_HIGH_RES_TIMERS=y.
> What about NO_HZ? Does that setting change anything?
It is independent from HRT and selects the mode where the idle process
stops timer HZ interrupts from occuring until it's scheduled off CPU.
WBR, Sergei
next prev parent reply other threads:[~2008-04-25 16:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-25 14:00 HR timers on PowerPC 83xx Joakim Tjernlund
2008-04-25 14:18 ` Sergei Shtylyov
2008-04-25 14:50 ` Joakim Tjernlund
2008-04-25 15:59 ` Sergei Shtylyov [this message]
2008-04-25 18:29 ` Joakim Tjernlund
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