linux-kernel - Re: [PATCH v1 2/3] thermal/debugfs: Pass cooling device state to thermal_debug_cdev

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Message-ID: <CAJZ5v0ik_EqSXzTkowz=ha-U+JU+=KtqEMwD5+r329og2d4t=A@mail.gmail.com>
Date: Thu, 25 Apr 2024 15:00:06 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Lukasz Luba <lukasz.luba@....com>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>, LKML <linux-kernel@...r.kernel.org>, 
	Linux PM <linux-pm@...r.kernel.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: Re: [PATCH v1 2/3] thermal/debugfs: Pass cooling device state to thermal_debug_cdev_add()

On Thu, Apr 25, 2024 at 2:36 PM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> Hi Lukasz,
>
> On Thu, Apr 25, 2024 at 12:02 PM Lukasz Luba <lukasz.luba@....com> wrote:
> >
> > Hi Rafael,
> >
> > On 4/23/24 19:00, Rafael J. Wysocki wrote:
> > > From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > >
> > > If cdev_dt_seq_show() runs before the first state transition of a cooling
> > > device, it will not print any state residency information for it, even
> > > though it might be reasonably expected to print residency information for
> > > the initial state of the cooling device.
> > >
> > > For this reason, rearrange the code to get the initial state of a cooling
> > > device at the registration time and pass it to thermal_debug_cdev_add(),
> > > so that the latter can create a duration record for that state which will
> > > allow cdev_dt_seq_show() to print its residency information.
> > >
> > > Fixes: 755113d76786 ("thermal/debugfs: Add thermal cooling device debugfs information")
> > > Reported-by: Lukasz Luba <lukasz.luba@....com>
> > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > > ---
> > >   drivers/thermal/thermal_core.c    |    9 +++++++--
> > >   drivers/thermal/thermal_debugfs.c |   12 ++++++++++--
> > >   drivers/thermal/thermal_debugfs.h |    4 ++--
> > >   3 files changed, 19 insertions(+), 6 deletions(-)
> > >
> >
> > I'm trying to test it on my board and do the review, but faced issue.
> > For some reason I couldn't apply that patch on the latest bleeding-edge
> > branch.
> > Could you help me in this please? Is there something missing in the
> > patch set (like one more fist patch)?
>
> I messed up the ordering of patches (patch [2/3] should be the last
> one in the series) and on top of that, you'll need a small rebase on
> that patch.
>
> Sorry about this, I'll send a v2.

Actually, the ordering was OK, but the rebase of the second patch is
still needed.  I'll send a v2.