linux-kernel - Re: [RFC PATCH v2 03/12] drivers/base: Add system device hotplug framework

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Message-ID: <1359596935.15120.110.camel@misato.fc.hp.com>
Date:	Wed, 30 Jan 2013 18:48:55 -0700
From:	Toshi Kani <toshi.kani@...com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	rjw@...k.pl, lenb@...nel.org, akpm@...ux-foundation.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, bhelgaas@...gle.com,
	isimatu.yasuaki@...fujitsu.com, jiang.liu@...wei.com,
	wency@...fujitsu.com, guohanjun@...wei.com, yinghai@...nel.org,
	srivatsa.bhat@...ux.vnet.ibm.com
Subject: Re: [RFC PATCH v2 03/12] drivers/base: Add system device hotplug
 framework

On Tue, 2013-01-29 at 23:54 -0500, Greg KH wrote:
> On Thu, Jan 10, 2013 at 04:40:21PM -0700, Toshi Kani wrote:
> > Added sys_hotplug.c, which is the system device hotplug framework code.
> > 
> > shp_register_handler() allows modules to register their hotplug handlers
> > to the framework.  shp_submit_req() provides the interface to submit
> > a hotplug or online/offline request of system devices.  The request is
> > then put into hp_workqueue.  shp_start_req() calls all registered handlers
> > in ascending order for each phase.  If any handler failed in validate or
> > execute phase, shp_start_req() initiates its rollback procedure.
> > 
> > Signed-off-by: Toshi Kani <toshi.kani@...com>
> > ---
> >  drivers/base/Makefile      |    1 
> >  drivers/base/sys_hotplug.c |  313 ++++++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 314 insertions(+)
> >  create mode 100644 drivers/base/sys_hotplug.c
> > 
> > diff --git a/drivers/base/Makefile b/drivers/base/Makefile
> > index 5aa2d70..2e9b2f1 100644
> > --- a/drivers/base/Makefile
> > +++ b/drivers/base/Makefile
> > @@ -21,6 +21,7 @@ endif
> >  obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o
> >  obj-$(CONFIG_REGMAP)	+= regmap/
> >  obj-$(CONFIG_SOC_BUS) += soc.o
> > +obj-y			+= sys_hotplug.o
> 
> No option to select this for systems that don't need it?  If not, then
> put it up higher with all of the other code for the core.

It used to have CONFIG_HOTPLUG, but I removed it as you suggested.  Yes,
I will put it up higher.  

Thanks,
-Toshi


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