On 03/04, Lianwei Wang wrote:
>
> Freeze/Thaw is a hot path for the Linux based mobile OS, e.g. Android.
> If we don't remove the pending fake signal, then the user space apps
> or the related kernel driver has to handle such error.
But if we add recalc_sigpending() we penalize the common case whi
Hello,
On Mon, Mar 04, 2013 at 11:24:06AM +0800, Lianwei Wang wrote:
> Freeze/Thaw is a hot path for the Linux based mobile OS, e.g. Android.
> If we don't remove the pending fake signal, then the user space apps
Hotness is relative. How often are we talking about? Do you have any
numbers backi
al for
>> userspace tasks? as below patch do:
>>
>> From 176fccee178bc0185d92853dd2f521c9166b0853 Mon Sep 17 00:00:00 2001
>> From: Lianwei Wang
>> Date: Mon, 21 Jan 2013 18:21:26 +0800
>> Subject: [PATCH] freezer: add fake signal clearing back when thaw task
>
Damn.
Tejun, et all, sorry for confusion.
Somehow I misunderstood your email completely! as if you argue with
my "freezer: do not send a fake signal to a PF_DUMPCORE thread"
change http://marc.info/?l=linux-kernel&m=136173112604220
As for "add fake signal clearing back when thaw task", I do not
Ah, I just noticed that the changelog mentions wait_event_freezable() too,
On 02/25, Tejun Heo wrote:
>
> > Subject: [PATCH] freezer: add fake signal clearing back when thaw task
> >
> > The fake TIF_SIGPENDING is set during freeze userspace process, but it
> > is
On 02/25, Tejun Heo wrote:
>
> (cc'ing Rafael and Oleg and quoting whole body)
>
> On Thu, Feb 21, 2013 at 02:19:21PM +0800, Lianwei Wang wrote:
> > Hi Tejun Heo and all,
> >
> > The commit of "34b087e freezer: kill unused
> > set_freezable_with_signal()" remove recalc_sigpending*() calls in
> > fr
nal for
> userspace tasks? as below patch do:
>
> From 176fccee178bc0185d92853dd2f521c9166b0853 Mon Sep 17 00:00:00 2001
> From: Lianwei Wang
> Date: Mon, 21 Jan 2013 18:21:26 +0800
> Subject: [PATCH] freezer: add fake signal clearing back when thaw task
>
> The fake TIF_
9166b0853 Mon Sep 17 00:00:00 2001
From: Lianwei Wang
Date: Mon, 21 Jan 2013 18:21:26 +0800
Subject: [PATCH] freezer: add fake signal clearing back when thaw task
The fake TIF_SIGPENDING is set during freeze userspace process, but it
is not cleared when thaw tasks after below commit:
34b087e
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