From: Peter Zijlstra <peterz@infradead.org>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: lenb@kernel.org, rjw@rjwysocki.net,
Eliezer Tamir <eliezer.tamir@linux.intel.com>,
Chris Leech <christopher.leech@intel.com>,
David Miller <davem@davemloft.net>,
rui.zhang@intel.com, jacob.jun.pan@linux.intel.com,
Mike Galbraith <bitbucket@online.de>,
Ingo Molnar <mingo@kernel.org>,
hpa@zytor.com, Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [PATCH 3/7] idle, thermal, acpi: Remove home grown idle implementations
Date: Wed, 20 Nov 2013 17:59:21 +0100 [thread overview]
Message-ID: <20131120165921.GT16796@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <528CE611.8040903@linux.intel.com>
On Wed, Nov 20, 2013 at 08:40:49AM -0800, Arjan van de Ven wrote:
> On 11/20/2013 8:04 AM, Peter Zijlstra wrote:
> >This does not fully preseve existing behaviour in that the generic
> >idle cycle function calls into the normal cpuidle governed idle
> >routines and should thus respect things like QoS parameters and the
> >like.
>
>
> NAK on the powerclamp side.
>
> powerclamp MUST NOT do that....
> it is needed to go to the deepest state no matter what
> (this is for when your system is overheating. there is not a lot of choice
> here... alternative is an emergency reset that the hardware does for safety)
Then its a worse broken piece of shit than I thought it was.
The only way to do what you want is to pretty much do stop_machine().
There's no guarantee your current FIFO-50 tasks will ever get to run.
Also, since when does Intel hardware do emergency resets on thermal
events? It used to force throttle stuff.
next prev parent reply other threads:[~2013-11-20 16:59 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 16:04 [PATCH 0/7] Cure some vaux idle wrackage Peter Zijlstra
2013-11-20 16:04 ` [PATCH 1/7] x86, acpi, idle: Restructure the mwait idle routines Peter Zijlstra
2013-11-20 16:04 ` [PATCH 2/7] sched, preempt: Fixup missed PREEMPT_NEED_RESCHED folding Peter Zijlstra
2013-11-21 8:25 ` Peter Zijlstra
2013-11-20 16:04 ` [PATCH 3/7] idle, thermal, acpi: Remove home grown idle implementations Peter Zijlstra
2013-11-20 16:40 ` Arjan van de Ven
2013-11-20 16:59 ` Peter Zijlstra [this message]
2013-11-20 17:23 ` Thomas Gleixner
2013-11-20 17:23 ` Arjan van de Ven
2013-11-20 17:55 ` Thomas Gleixner
2013-11-20 18:21 ` Arjan van de Ven
2013-11-20 19:38 ` Thomas Gleixner
2013-11-20 22:08 ` Jacob Pan
2013-11-21 0:54 ` Jacob Pan
2013-11-21 8:21 ` Peter Zijlstra
2013-11-21 16:07 ` Paul E. McKenney
2013-11-21 16:21 ` Arjan van de Ven
2013-11-21 19:19 ` Paul E. McKenney
2013-11-21 19:45 ` Arjan van de Ven
2013-11-21 20:07 ` Paul E. McKenney
2013-11-22 0:10 ` Jacob Pan
2013-11-22 4:20 ` Paul E. McKenney
2013-11-22 11:33 ` Peter Zijlstra
2013-11-22 17:17 ` Paul E. McKenney
2013-11-21 16:29 ` Peter Zijlstra
2013-11-21 17:27 ` Paul E. McKenney
2013-11-20 16:04 ` [PATCH 4/7] preempt, locking: Rework local_bh_{dis,en}able() Peter Zijlstra
2013-11-20 16:04 ` [PATCH 5/7] locking: Optimize lock_bh functions Peter Zijlstra
2013-11-20 16:04 ` [PATCH 6/7] sched: Clean up preempt_enable_no_resched() abuse Peter Zijlstra
2013-11-20 18:02 ` Eliezer Tamir
2013-11-20 18:15 ` Peter Zijlstra
2013-11-20 20:14 ` Eliezer Tamir
2013-11-21 10:10 ` Peter Zijlstra
2013-11-21 13:26 ` Eliezer Tamir
2013-11-21 13:39 ` Peter Zijlstra
2013-11-22 6:56 ` Eliezer Tamir
2013-11-22 11:30 ` Peter Zijlstra
2013-11-26 7:15 ` Eliezer Tamir
2013-11-26 10:51 ` Thomas Gleixner
2013-11-20 16:04 ` [PATCH 7/7] preempt: Take away preempt_enable_no_resched() from modules Peter Zijlstra
2013-11-20 18:54 ` Jacob Pan
2013-11-20 19:00 ` Peter Zijlstra
2013-11-20 19:18 ` Peter Zijlstra
2013-11-20 19:29 ` Jacob Pan
2013-11-20 16:34 ` [PATCH 0/7] Cure some vaux idle wrackage Peter Zijlstra
2013-11-20 17:19 ` Jacob Pan
2013-11-20 17:24 ` Peter Zijlstra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131120165921.GT16796@laptop.programming.kicks-ass.net \
--to=peterz@infradead.org \
--cc=arjan@linux.intel.com \
--cc=bitbucket@online.de \
--cc=christopher.leech@intel.com \
--cc=davem@davemloft.net \
--cc=eliezer.tamir@linux.intel.com \
--cc=hpa@zytor.com \
--cc=jacob.jun.pan@linux.intel.com \
--cc=lenb@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=rafael.j.wysocki@intel.com \
--cc=rjw@rjwysocki.net \
--cc=rui.zhang@intel.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.