On Fri, 2013-02-15 at 16:33 +, Moore, Robert wrote:
> > > > > > > > > Is there a mechanism in ACPICA to ensure that a handle
> > > > > > > > > won't become stale while a notify handler is running for
> > > > > > > > > it or is the OS responsible for ensuring that
> > > > > > > > > _EJ0 won't be
> > > > > > > > Is there a mechanism in ACPICA to ensure that a handle
> > > > > > > > won't become stale while a notify handler is running for
> > > > > > > > it or is the OS responsible for ensuring that
> > > > > > > > _EJ0 won't be run in parallel with notify handlers for
> > > > > > > > devic
t; LKML; Bjorn Helgaas; Jiang
> > > > > Liu;
> > > > > Yinghai Lu; Yasuaki Ishimatsu; Myron Stowe; linux-...@vger.kernel.org
> > > > > Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues
> > > > > and
> > > > >
t; -Original Message-
> > > > > > From: Rafael J. Wysocki [mailto:r...@sisk.pl]
> > > > > > Sent: Thursday, February 14, 2013 4:04 AM
> > > > > > To: Moore, Robert
> > > > > > Cc: Toshi Kani; ACPI Devel Mali
PM
> > > To: Moore, Robert
> > > Cc: Toshi Kani; ACPI Devel Maling List; LKML; Bjorn Helgaas; Jiang Liu;
> > > Yinghai Lu; Yasuaki Ishimatsu; Myron Stowe; linux-...@vger.kernel.org
> > > Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues and
&g
t; LKML; Bjorn Helgaas; Jiang Liu;
> > Yinghai Lu; Yasuaki Ishimatsu; Myron Stowe; linux-...@vger.kernel.org
> > Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues and
> > memory leaks
> >
> > On Thursday, February 14, 2013 08:45:14 PM Moore, Robert wrote:
..@vger.kernel.org
> Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues and
> memory leaks
>
> On Thursday, February 14, 2013 08:45:14 PM Moore, Robert wrote:
> >
> > > -Original Message-
> > > From: Rafael J. Wysocki [mailto:r...@sisk.pl]
&g
t; LKML; Bjorn Helgaas; Jiang Liu;
> > Yinghai Lu; Yasuaki Ishimatsu; Myron Stowe; linux-...@vger.kernel.org
> > Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues and
> > memory leaks
> >
> > On Thursday, February 14, 2013 02:31:22 AM Moore, Robert w
rnel.org
> Subject: Re: [Update][PATCH] ACPI / hotplug: Fix concurrency issues and
> memory leaks
>
> On Thursday, February 14, 2013 02:31:22 AM Moore, Robert wrote:
> > > > > I thought about that, but actually there's no guarantee that the
> > > >
On Thursday, February 14, 2013 12:05:43 PM Yinghai Lu wrote:
> On Wed, Feb 13, 2013 at 5:16 AM, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki
> >
> > This changeset is aimed at fixing a few different but related
> > problems in the ACPI hotplug infrastructure.
> >
> > First of all, since n
On Wed, Feb 13, 2013 at 5:16 AM, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki
>
> This changeset is aimed at fixing a few different but related
> problems in the ACPI hotplug infrastructure.
>
> First of all, since notify handlers may be run in parallel with
> acpi_bus_scan(), acpi_bus_trim
On Thursday, February 14, 2013 02:31:22 AM Moore, Robert wrote:
> > > > I thought about that, but actually there's no guarantee that the
> > > > handle will be valid after _EJ0 as far as I can say. So the race
> > > > condition is going to be there anyway and using struct acpi_device
> > > > just
> > > I thought about that, but actually there's no guarantee that the
> > > handle will be valid after _EJ0 as far as I can say. So the race
> > > condition is going to be there anyway and using struct acpi_device
> > > just makes it easier to avoid it.
> >
> > In theory, yes, a stale handle coul
On Thu, 2013-02-14 at 00:42 +0100, Rafael J. Wysocki wrote:
> On Wednesday, February 13, 2013 04:09:29 PM Toshi Kani wrote:
> > On Wed, 2013-02-13 at 21:52 +0100, Rafael J. Wysocki wrote:
> > > On Wednesday, February 13, 2013 10:43:58 AM Toshi Kani wrote:
> > > > On Wed, 2013-02-13 at 14:16 +0100,
On Wednesday, February 13, 2013 04:09:29 PM Toshi Kani wrote:
> On Wed, 2013-02-13 at 21:52 +0100, Rafael J. Wysocki wrote:
> > On Wednesday, February 13, 2013 10:43:58 AM Toshi Kani wrote:
> > > On Wed, 2013-02-13 at 14:16 +0100, Rafael J. Wysocki wrote:
> > > > From: Rafael J. Wysocki
> > > >
>
On Wed, 2013-02-13 at 21:52 +0100, Rafael J. Wysocki wrote:
> On Wednesday, February 13, 2013 10:43:58 AM Toshi Kani wrote:
> > On Wed, 2013-02-13 at 14:16 +0100, Rafael J. Wysocki wrote:
> > > From: Rafael J. Wysocki
> > >
> > > This changeset is aimed at fixing a few different but related
> > >
On Wednesday, February 13, 2013 10:43:58 AM Toshi Kani wrote:
> On Wed, 2013-02-13 at 14:16 +0100, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki
> >
> > This changeset is aimed at fixing a few different but related
> > problems in the ACPI hotplug infrastructure.
> >
> > First of all, sin
On Wed, 2013-02-13 at 14:16 +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki
>
> This changeset is aimed at fixing a few different but related
> problems in the ACPI hotplug infrastructure.
>
> First of all, since notify handlers may be run in parallel with
> acpi_bus_scan(), acpi_bus_t
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