On Mon, 2013-01-14 at 11:21 -0800, Greg KH wrote: > On Mon, Jan 14, 2013 at 08:07:35PM +0100, Rafael J. Wysocki wrote: > > On Monday, January 14, 2013 11:42:09 AM Toshi Kani wrote: > > > On Mon, 2013-01-14 at 19:47 +0100, Rafael J. Wysocki wrote: > > > > On Monday, January 14, 2013 08:53:53 AM Toshi Kani wrote: > > > > > On Fri, 2013-01-11 at 22:25 +0100, Rafael J. Wysocki wrote: > > > > > > On Thursday, January 10, 2013 04:40:20 PM Toshi Kani wrote: > > > > > > > Added include/acpi/sys_hotplug.h, which is ACPI-specific system > > > > > > > device hotplug header and defines the order values of ACPI-specific > > > > > > > handlers. > > > > > > > > > > > > > > Signed-off-by: Toshi Kani <toshi.kani@xxxxxx> > > > > > > > --- > > > > > > > include/acpi/sys_hotplug.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ > > > > > > > 1 file changed, 48 insertions(+) > > > > > > > create mode 100644 include/acpi/sys_hotplug.h > > > > > > > > > > > > > > diff --git a/include/acpi/sys_hotplug.h b/include/acpi/sys_hotplug.h > > > > > > > new file mode 100644 > > > > > > > index 0000000..ad80f61 > > > > > > > --- /dev/null > > > > > > > +++ b/include/acpi/sys_hotplug.h > > > > > > > @@ -0,0 +1,48 @@ > > > > > > > +/* > > > > > > > + * sys_hotplug.h - ACPI System device hot-plug framework > > > > > > > + * > > > > > > > + * Copyright (C) 2012 Hewlett-Packard Development Company, L.P. > > > > > > > + * Toshi Kani <toshi.kani@xxxxxx> > > > > > > > + * > > > > > > > + * This program is free software; you can redistribute it and/or modify > > > > > > > + * it under the terms of the GNU General Public License version 2 as > > > > > > > + * published by the Free Software Foundation. > > > > > > > + */ > > > > > > > + > > > > > > > +#ifndef _ACPI_SYS_HOTPLUG_H > > > > > > > +#define _ACPI_SYS_HOTPLUG_H > > > > > > > + > > > > > > > +#include <linux/list.h> > > > > > > > +#include <linux/device.h> > > > > > > > +#include <linux/sys_hotplug.h> > > > > > > > + > > > > > > > +/* > > > > > > > + * System device hot-plug operation proceeds in the following order. > > > > > > > + * Validate phase -> Execute phase -> Commit phase > > > > > > > + * > > > > > > > + * The order values below define the calling sequence of ACPI-specific > > > > > > > + * handlers for each phase in ascending order. The order value of > > > > > > > + * platform-neutral handlers are defined in <linux/sys_hotplug.h>. > > > > > > > + */ > > > > > > > + > > > > > > > +/* Add Validate order values */ > > > > > > > +#define SHP_ACPI_BUS_ADD_VALIDATE_ORDER 0 /* must be first */ > > > > > > > + > > > > > > > +/* Add Execute order values */ > > > > > > > +#define SHP_ACPI_BUS_ADD_EXECUTE_ORDER 10 > > > > > > > +#define SHP_ACPI_RES_ADD_EXECUTE_ORDER 20 > > > > > > > + > > > > > > > +/* Add Commit order values */ > > > > > > > +#define SHP_ACPI_BUS_ADD_COMMIT_ORDER 10 > > > > > > > + > > > > > > > +/* Delete Validate order values */ > > > > > > > +#define SHP_ACPI_BUS_DEL_VALIDATE_ORDER 0 /* must be first */ > > > > > > > +#define SHP_ACPI_RES_DEL_VALIDATE_ORDER 10 > > > > > > > + > > > > > > > +/* Delete Execute order values */ > > > > > > > +#define SHP_ACPI_BUS_DEL_EXECUTE_ORDER 100 > > > > > > > + > > > > > > > +/* Delete Commit order values */ > > > > > > > +#define SHP_ACPI_BUS_DEL_COMMIT_ORDER 100 > > > > > > > + > > > > > > > +#endif /* _ACPI_SYS_HOTPLUG_H */ > > > > > > > -- > > > > > > > > > > > > Why did you use the particular values above? > > > > > > > > > > The ordering values above are used to define the relative order among > > > > > handlers. For instance, the 100 for SHP_ACPI_BUS_DEL_EXECUTE_ORDER can > > > > > potentially be 21 since it is still larger than 20 for > > > > > SHP_MEM_DEL_EXECUTE_ORDER defined in linux/sys_hotplug.h. I picked 100 > > > > > so that more platform-neutral handlers can be added in between 20 and > > > > > 100 in future. > > > > > > > > I thought so, but I don't think it's a good idea to add gaps like this. > > > > > > OK, I will use an equal gap of 10 for all values. So, the 100 in the > > > above example will be changed to 30. > > > > I wonder why you want to have those gaps at all. > > > > Anyway, this is just a small detail and it doesn't mean I don't have more > > comments. I just need some more time to get the big picture idea of how this > > is supposed to work and perhaps Greg will have some remarks too. > > Yes, give me a few days to catch up on other patches before I get the > chance to review these. That's great! Thanks Greg! -Toshi -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
