linux-kernel - Re: [PATCH v5 0/3] Thermal ACPI APIs for generic trip points

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Message-ID: <8547963350fb3bdb09a4693f0eb80c7199ab6f21.camel@linux.intel.com>
Date:   Wed, 18 Jan 2023 12:53:31 -0800
From:   srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        "rafael@...nel.org" <rafael@...nel.org>
Cc:     "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "christophe.jaillet@...adoo.fr" <christophe.jaillet@...adoo.fr>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v5 0/3] Thermal ACPI APIs for generic trip points

On Wed, 2023-01-18 at 21:00 +0100, Daniel Lezcano wrote:
> On 18/01/2023 20:16, srinivas pandruvada wrote:
> 
> [ ... ]
> 
> > > > But we'd better wait for the thermald test result from
> > > > Srinvias.
> > > 
> > > A quick test show that things still work with thermald and these
> > > changes.
> > 
> > But I have a question. In some devices trip point temperature is
> > not
> > static. When hardware changes, we get notification. For example
> > INT3403_PERF_TRIP_POINT_CHANGED for INT3403 drivers.
> > Currently get_trip can get the latest changed value. But if we
> > preregister, we need some mechanism to update them.
> 
> When the notification INT3403_PERF_TRIP_POINT_CHANGED happens, we
> call 
> int340x_thermal_read_trips() which in turn updates the trip points.
> 

Not sure how we handle concurrency here when driver can freely update
trips while thermal core is using trips.


Thanks,
Srinivas



> 
>