From: Michael Ellerman <mpe@ellerman•id.au>
To: Greg Kroah-Hartman <gregkh@linuxfoundation•org>
Cc: linux-kernel@vger•kernel.org,
Benjamin Herrenschmidt <benh@kernel•crashing.org>,
Paul Mackerras <paulus@samba•org>,
Vineet Gupta <vgupta@synopsys•com>,
Bart Van Assche <bart.vanassche@sandisk•com>,
Robin Murphy <robin.murphy@arm•com>,
Joerg Roedel <jroedel@suse•de>, Johan Hovold <johan@kernel•org>,
Alexey Kardashevskiy <aik@ozlabs•ru>,
Krzysztof Kozlowski <krzk@kernel•org>,
linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH 11/16] powerpc: vio_cmo: use dev_groups and not dev_attrs for bus_type
Date: Tue, 13 Jun 2017 20:09:03 +1000 [thread overview]
Message-ID: <87wp8ggpxc.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <20170612065810.GA17461@kroah.com>
Greg Kroah-Hartman <gregkh@linuxfoundation•org> writes:
> On Fri, Jun 09, 2017 at 09:23:10PM +1000, Michael Ellerman wrote:
>> Greg Kroah-Hartman <gregkh@linuxfoundation•org> writes:
>>
>> > On Fri, Jun 09, 2017 at 08:53:22AM +1000, Michael Ellerman wrote:
>> >> Greg Kroah-Hartman <gregkh@linuxfoundation•org> writes:
>> >>
>> >> > On Thu, Jun 08, 2017 at 11:12:10PM +1000, Michael Ellerman wrote:
>> >> >> Greg Kroah-Hartman <gregkh@linuxfoundation•org> writes:
>> >> >>
>> >> >> > The dev_attrs field has long been "depreciated" and is finally being
>> >> >> > removed, so move the driver to use the "correct" dev_groups field
>> >> >> > instead for struct bus_type.
>> >> >> >
>> >> >> > Cc: Benjamin Herrenschmidt <benh@kernel•crashing.org>
>> >> >> > Cc: Paul Mackerras <paulus@samba•org>
>> >> >> > Cc: Michael Ellerman <mpe@ellerman•id.au>
>> >> >> > Cc: Vineet Gupta <vgupta@synopsys•com>
>> >> >> > Cc: Bart Van Assche <bart.vanassche@sandisk•com>
>> >> >> > Cc: Robin Murphy <robin.murphy@arm•com>
>> >> >> > Cc: Joerg Roedel <jroedel@suse•de>
>> >> >> > Cc: Johan Hovold <johan@kernel•org>
>> >> >> > Cc: Alexey Kardashevskiy <aik@ozlabs•ru>
>> >> >> > Cc: Krzysztof Kozlowski <krzk@kernel•org>
>> >> >> > Cc: <linuxppc-dev@lists•ozlabs.org>
>> >> >> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation•org>
>> >> >> > ---
>> >> >> > arch/powerpc/platforms/pseries/vio.c | 37 +++++++++++++++++++++---------------
>> >> >> > 1 file changed, 22 insertions(+), 15 deletions(-)
>> >> >>
>> >> >> This one needed a bit more work to get building, the incremental diff is
>> >> >> below. We need a forward declaration of name, devspec and modalias,
>> >> >> which is a bit weird, but that's how the code is currently structured.
>> >> >> And there's dev and bus attributes with the same name, so that needed an
>> >> >> added "bus".
>> >> >>
>> >> >> I booted v2 of patch 10 and this one and everything looks identical to
>> >> >> upstream.
>> >> >
>> >> > Ah, many thanks, this was on my todo list to fix up today.
>> >> >
>> >> > But you renamed the sysfs files when you added "bus" to the function
>> >> > names, are you sure you want to do that? I don't mind, but if you
>> >> > happen to have userspace tools that look at those files, they just broke
>> >> > :(
>> >>
>> >> Ugh crap, no that won't work.
>> >>
>> >> I didn't see it when I tested because my machine doesn't have the CMO
>> >> feature enabled.
>> >>
>> >> I guess we have to open code some of the BUS_ATTR_RO() etc. so we can
>> >> avoid the name clash.
>> >
>> > Or split it into multiple files, I've solved this that way in the past.
>> > You shouldn't have to "open code" BUS_ATTR_RO().
>>
>> It just requires one use of __ATTR(), which seems simpler than splitting
>> the file in two.
>>
>> Here's a new incremental diff against your patch.
>>
>> I confirmed none of the cmo names changed, result after is:
>>
>> ./devices/vio/cmo_desired
>> ./devices/vio/cmo_allocated
>> ./devices/vio/cmo_entitled
>> ./devices/vio/cmo_allocs_failed
>> ./devices/vio/71000000/cmo_desired
>> ./devices/vio/71000000/cmo_allocated
>> ./devices/vio/71000000/cmo_entitled
>> ./devices/vio/71000000/cmo_allocs_failed
>> ./devices/vio/30000000/cmo_desired
>> ./devices/vio/30000000/cmo_allocated
>> ./devices/vio/30000000/cmo_entitled
>> ./devices/vio/30000000/cmo_allocs_failed
>> ./devices/vio/2000/cmo_desired
>> ./devices/vio/2000/cmo_allocated
>> ./devices/vio/2000/cmo_entitled
>> ./devices/vio/2000/cmo_allocs_failed
>> ./bus/vio/cmo_high
>> ./bus/vio/cmo_spare
>> ./bus/vio/cmo_reserve_size
>> ./bus/vio/cmo_desired
>> ./bus/vio/cmo_entitled
>> ./bus/vio/cmo_excess_free
>> ./bus/vio/cmo_excess_size
>> ./bus/vio/cmo_min
>> ./bus/vio/cmo_curr
>
> Thanks for this, it seems to have passed all of the 0-day testing. I'll
> go apply it to my "real" tree now, thanks again for the help.
No worries. It'll get some more build & boot testing from my CI once it's
in linux-next.
cheers
prev parent reply other threads:[~2017-06-13 10:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170606192221.1617-1-gregkh@linuxfoundation.org>
2017-06-06 19:22 ` [PATCH 07/16] macintosh: use dev_groups and not dev_attrs for bus_type Greg Kroah-Hartman
2017-06-06 19:22 ` [PATCH 08/16] powerpc: ps3: " Greg Kroah-Hartman
2017-06-06 21:33 ` Geoff Levand
2017-06-07 10:17 ` Greg Kroah-Hartman
2017-06-06 19:22 ` [PATCH 09/16] powerpc: ibmebus: " Greg Kroah-Hartman
2017-06-06 19:22 ` [PATCH 10/16] powerpc: vio: " Greg Kroah-Hartman
2017-06-06 19:30 ` Greg Kroah-Hartman
2017-06-06 23:04 ` Benjamin Herrenschmidt
2017-06-07 5:45 ` Greg Kroah-Hartman
2017-06-07 5:56 ` Benjamin Herrenschmidt
2017-06-07 8:58 ` [PATCH 10/16 v2] " Greg Kroah-Hartman
2017-06-06 19:22 ` [PATCH 11/16] powerpc: vio_cmo: " Greg Kroah-Hartman
2017-06-08 13:12 ` Michael Ellerman
2017-06-08 13:39 ` Greg Kroah-Hartman
2017-06-08 22:53 ` Michael Ellerman
2017-06-09 5:44 ` Greg Kroah-Hartman
2017-06-09 11:23 ` Michael Ellerman
2017-06-10 12:48 ` Greg Kroah-Hartman
2017-06-12 6:58 ` Greg Kroah-Hartman
2017-06-13 10:09 ` Michael Ellerman [this message]
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