Re: [PATCH v2 1/9] drivers: base: add new class "cpu" to group cpu devices

From: Stephen Boyd
Date: Fri Jul 25 2014 - 15:09:14 EST

On 07/25/14 09:44, Sudeep Holla wrote:
> From: Sudeep Holla <sudeep.holla@xxxxxxx>
> This patch creates a new class called "cpu" and assigns it to all the
> cpu devices. This helps in grouping all the cpu devices and associated
> child devices under the same class.
> This patch also:
> 1. modifies the get_parent_device to return the legacy path
> (/sys/devices/system/cpu/..) for the cpu class devices to support
> existing sysfs ABI
> 2. avoids creating link in the class directory pointing to the device as
> there would be per-cpu instance of these devices with the same name
> 3. makes sure subsystem symlink continues pointing to cpu bus instead of
> cpu class for cpu devices
> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

Why can't we make a 'cache' bus that the cache devices hang off of? It
doesn't make sense to me why we would want to have cache devices living
on the cpu bus.

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