linux-kernel - Re: Regression with PM / wakeup: Show wakeup sources stats in sysfs"

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Message-ID: <CANA+-vBURc0ivB=UHXK5Xg_tVJOV_h9Uz_Ke4ZG3Gu_sMhfTvQ@mail.gmail.com>
Date:   Fri, 29 May 2020 15:28:32 -0700
From:   Tri Vo <trong@...roid.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Stephen Boyd <swboyd@...omium.org>
Subject: Re: Regression with PM / wakeup: Show wakeup sources stats in sysfs"

On Fri, May 29, 2020 at 9:51 AM Rafael J. Wysocki
<rafael.j.wysocki@...el.com> wrote:
>
> On 5/28/2020 10:46 PM, Florian Fainelli wrote:
> > Hi,
> >
> > Commit c8377adfa78103be5380200eb9dab764d7ca890e ("PM / wakeup: Show
> > wakeup sources stats in sysfs") is causing some of our tests to fail
> > because /sys/class/net/*/device/power/wakeup_count is now 0, despite
> > /sys/kernel/debug/wakeup_sources clearly indicating that the Ethernet
> > device was responsible for system wake-up.
> >
> > What's more in looking at /sys/class/wakekup/wakeup2/event_count, we
> > have the number of Wake-on-LAN wakeups recorded properly, but
> > wakeup_count is desperately 0, why is that?
>
> I need to look at that commit in detail to find out what is going on.

It would be helpful to see the contents of
/sys/kernel/debug/wakeup_sources, /sys/class/net/*/device/power/*, and
/sys/class/wakekup/* corresponding to the device in question. The
values in these files are queried from the same struct wakeup_source.
So it's odd if wakeup_count diverges.