linux-kernel - Re: [PATCH v2 0/4] ACPI: Refactor system notify handling

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Message-ID: <1349969788.23493.54.camel@misato.fc.hp.com>
Date:	Thu, 11 Oct 2012 09:36:28 -0600
From:	Toshi Kani <toshi.kani@...com>
To:	linux-acpi@...r.kernel.org
Cc:	lenb@...nel.org, linux-kernel@...r.kernel.org, bhelgaas@...gle.com,
	liuj97@...il.com, isimatu.yasuaki@...fujitsu.com
Subject: Re: [PATCH v2 0/4] ACPI: Refactor system notify handling

Hi Len,

Can you please review this patchset?

Thanks,
-Toshi


On Tue, 2012-10-09 at 07:55 -0600, Toshi Kani wrote:
> Hi Len,
> 
> Can you please review this patchset?  Please let me know if you have any
> concern/question.
> 
> Thanks,
> -Toshi
> 
> 
> On Thu, 2012-09-06 at 17:40 -0600, Toshi Kani wrote:
> > This patchset updates the ACPI system-level (ex. hotplug)
> > notify handling with a new .sys_notify interface.  It provides
> > the following changes:
> > 
> > - Allow ACPI drivers to register their system-level (hotplug)
> >   notify handlers to a new .sys_notify interface through their
> >   acpi_driver table.  This removes redundant ACPI namespace
> >   walks from ACPI drivers for faster booting.  The global notify
> >   handler acpi_bus_notify() is called for all system-level ACPI
> >   device notifications, which then calls an appropriate driver's
> >   handler if any.  ACPI drivers no longer need to register or
> >   unregister driver's handlers to each device object in ACPI
> >   namespace.
> >  
> > - Support dynamic ACPI namespace with LoadTable & Unload opcode
> >   without any changes in ACPI drivers.  There is no need to 
> >   register / unregister handlers to ACPI device objects that are
> >   being loaded to / unloaded from ACPI namespace.
> > 
> > - Allow ACPI drivers to use a common hotplug handler when it is
> >   implemented.  It removes functional conflict between driver's
> >   notify handler and the global notify handler acpi_bus_notify().
> >   acpi_bus_notify() only calls an appropriate notify handler if
> >   any.
> > 
> > Note that the changes maintain backward compatibility for ACPI
> > drivers.  Any drivers registered their hotplug handlers through
> > the existing interfaces, such as acpi_install_notify_handler()
> > and register_acpi_bus_notifier(), will continue to work as before.
> > 
> > v2:
> >  - Protected unbound driver from unloading when calling .sys_notify.
> >  - Changed acpi_bus_notify() to call acpi_bus_notify_list first for
> >    maintaining the original order.
> > 
> > ---
> > Toshi Kani (4):
> >  ACPI: Support system notify handler via .sys_notify
> >  ACPI: Update processor_driver to use .sys_notify
> >  ACPI: Update acpi_memhotplug to use .sys_notify
> >  ACPI: Update container to use .sys_notify
> > 
> > ---
> >  drivers/acpi/acpi_memhotplug.c  |   93 +-------------------------------------
> >  drivers/acpi/bus.c              |   64 ++++++++++++++++++++-------
> >  drivers/acpi/container.c        |   66 +--------------------------
> >  drivers/acpi/processor_driver.c |   82 +++-------------------------------
> >  drivers/acpi/scan.c             |   83 ++++++++++++++++++++++++++++++++++
> >  include/acpi/acpi_bus.h         |    6 +++
> >  6 files changed, 150 insertions(+), 244 deletions(-)
> > --
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> > 
> > 
> 
> 
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