lkml.org 
[lkml]   [2006]   [Dec]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: -mm merge plans for 2.6.20
Hi Andrew,

> remove-hotplug-cpu-crap-from-cpufreq.patch
>
> Sent to cpufreq maintainer

I suspect that Davej posted this patch because he was getting lockdep
warnings-reports from people complaining of ondemand-governor
performing spurious unlock_cpu_hotplug.
That problem has been fixed in the mainline by the commit
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4b96b1a10cb00c867103b21f0f2a6c91b705db11

If there are any other issues with cpufreq-cpuhotplug in the mainline,
I'm more than willing to help out fix them. As of now, I cannot seem
to spot anything serious in the mainline as such.
Hence, merging this isn't an immediate need IMHO.

> hotplug-cpu-clean-up-hotcpu_notifier-use.patch
> hotplug-cpu-clean-up-hotcpu_notifier-use-vs-gregkh-driver-cpu-topology-consider-sysfs_create_group-return-value.patch

>
> extend-notifier_call_chain-to-count-nr_calls-made.patch
> extend-notifier_call_chain-to-count-nr_calls-made-fixes.patch
> extend-notifier_call_chain-to-count-nr_calls-made-fixes-2.patch
> define-and-use-new-eventscpu_lock_acquire-and-cpu_lock_release.patch
> define-and-use-new-eventscpu_lock_acquire-and-cpu_lock_release-fix.patch
> eliminate-lock_cpu_hotplug-in-kernel-schedc.patch
> eliminate-lock_cpu_hotplug-in-kernel-schedc-fix.patch
> handle-cpu_lock_acquire-and-cpu_lock_release-in-workqueue_cpu_callback.patch
>
> Shall merge.
>

Merging this would still give the circular-locking dependency warnings
which I posted the other day. Unless we have a clean way to get
cpu-hotplug-protection for cpufreq, I don't see a point in merging this
stuff.

Cpufreq hotplug-interactions can be sorted out.
I have a few patches which I need to test out before posting them.

Other than that, there are issues regarding the
workqueue-hotplug-"locking" which needs to be addressed,
probably in a seperate thread.

So could you please reconsider this decision to merge the
hotplug-locking rework, and let it stabilize in -mm for sometime ?

Thanks and Regards
gautham.
--
Gautham R Shenoy
Linux Technology Center
IBM India.
"Freedom comes with a price tag of responsibility, which is still a bargain,
because Freedom is priceless!"
-
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: 2006-12-05 09:37    [W:0.253 / U:23.648 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site