From: Nathan Zimmer <nzimmer@sgi.com>
To: Stephen Boyd <sboyd@codeaurora.org>
Cc: <akpm@linux-foundation.org>, <mm-commits@vger.kernel.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: mmotm 2013-02-19-17-20 uploaded
Date: Thu, 21 Feb 2013 12:35:38 -0600 [thread overview]
Message-ID: <512668FA.5040505@sgi.com> (raw)
In-Reply-To: <51266721.5060006@codeaurora.org>
On 02/21/2013 12:27 PM, Stephen Boyd wrote:
> On 2/21/2013 10:18 AM, Nathan Zimmer wrote:
>> On Thu, Feb 21, 2013 at 01:25:29AM -0800, Stephen Boyd wrote:
>>> On 2/19/2013 5:21 PM, akpm@linux-foundation.org wrote:
>>>> * timer_list-split-timer_list_show_tickdevices.patch
>>>> * timer_list-convert-timer-list-to-be-a-proper-seq_file.patch
>>>> * timer_list-convert-timer-list-to-be-a-proper-seq_file-fix.patch
>>>> * timer_list-convert-timer-list-to-be-a-proper-seq_file-v2.patch
>>>> * timer_list-convert-timer-list-to-be-a-proper-seq_file-v2-fix.patch
>>>> * timer_list-convert-timer-list-to-be-a-proper-seq_file-fix-fix.patch
>>> These commits seem to break the timer list on devices with maxcpus !=
>>> nr_cpu_ids, which is possible if you specify maxcpus on the kernel
>>> command line. I no longer see the percpu devices that I normally have
>>> after the broadcast device.
>> Interesting.
>> However I can't seem to boot at the moment with maxcpus set to less then the actual
>> number of cpus so I am not having much luck investigating right now.
> It works well on ARM processors. I believe it still works on x86 devices
> as well. I suppose you can simulate it by offlining a CPU and then
> reading the file.
Thanks I am seeing the failure now.
> This comment is useful around the cpumask functions.
>
> Returns >= nr_cpu_ids if no further cpus set.
>
I had assumed it would be = nr_cpu_ids.
I will need to rethink the iterator.
Also I retested my other patches in the series, the ones for schedstat
and sched_debug, and those worked fine.
next prev parent reply other threads:[~2013-02-21 18:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-20 1:21 mmotm 2013-02-19-17-20 uploaded akpm
2013-02-20 16:41 ` since-3.8 branch opened for mm git tree (was: mmotm 2013-02-19-17-20 uploaded) Michal Hocko
2013-02-21 9:25 ` mmotm 2013-02-19-17-20 uploaded Stephen Boyd
2013-02-21 18:18 ` Nathan Zimmer
2013-02-21 18:27 ` Stephen Boyd
2013-02-21 18:35 ` Nathan Zimmer [this message]
2013-02-21 19:31 ` Stephen Boyd
2013-02-26 23:33 ` [PATCH v3 0/2] timer_list: Fix /proc/timer_list failure on 4096 cpus Nathan Zimmer
2013-02-26 23:33 ` [PATCH v3 1/2] timer_list: split timer_list_show_tickdevices() Nathan Zimmer
2013-02-27 19:37 ` Stephen Boyd
2013-02-27 19:56 ` Nathan Zimmer
2013-02-28 1:05 ` Nathan Zimmer
2013-02-26 23:33 ` [PATCH v3 2/2] timer_list: convert timer list to be a proper seq_file Nathan Zimmer
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