linux-kernel - Re: [PATCH v3 0/4] Add binder state and statistics to binderfs

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Date:   Wed, 4 Sep 2019 10:05:55 -0700
From:   Hridya Valsaraju <hridya@...gle.com>
To:     Joel Fernandes <joel@...lfernandes.org>
Cc:     Christian Brauner <christian.brauner@...ntu.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        "open list:ANDROID DRIVERS" <devel@...verdev.osuosl.org>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-team <kernel-team@...roid.com>
Subject: Re: [PATCH v3 0/4] Add binder state and statistics to binderfs

On Wed, Sep 4, 2019 at 7:20 AM Joel Fernandes <joel@...lfernandes.org> wrote:
>
> On September 4, 2019 7:19:35 AM EDT, Christian Brauner
> <christian.brauner@...ntu.com> wrote:
> >On Tue, Sep 03, 2019 at 09:16:51AM -0700, Hridya Valsaraju wrote:
> >> Currently, the only way to access binder state and
> >> statistics is through debugfs. We need a way to
> >> access the same even when debugfs is not mounted.
> >> These patches add a mount option to make this
> >> information available in binderfs without affecting
> >> its presence in debugfs. The following debugfs nodes
> >> will be made available in a binderfs instance when
> >> mounted with the mount option 'stats=global' or 'stats=local'.
> >>
> >>  /sys/kernel/debug/binder/failed_transaction_log
> >>  /sys/kernel/debug/binder/proc
> >>  /sys/kernel/debug/binder/state
> >>  /sys/kernel/debug/binder/stats
> >>  /sys/kernel/debug/binder/transaction_log
> >>  /sys/kernel/debug/binder/transactions
> >
> >Acked-by: Christian Brauner <christian.brauner@...ntu.com>
> >
> >Btw, I think your counting is off-by-one. :) We usually count the
> >initial send of a series as 0 and the first rework of that series as
> >v1.
> >I think you counted your initial send as v1 and the first rework as v2.
>
> Which is fine. I have done it both ways. Is this a rule written somewhere?
>
> >:)
> >
>
> If I am not mistaken, this is Hridya's first set of kernel patches.
> Congrats on landing it upstream and to everyone for reviews! (assuming
> nothing falls apart on the way to Linus tree).

I really hope so! Thank you Joel and everyone else for the reviews !


>
> thanks,
>
> - Joel
>
> [TLDR]
> My first kernel patch was 10 years ago to a WiFi driver when I was an
> intern at University. I was thrilled to have fixed a bug in network
> bridging code in the 802.11s stack. This is always a special moment so
> congrats again! ;-)
>
>
>
>
>
> >Christian
> >
> >>
> >> Hridya Valsaraju (4):
> >>   binder: add a mount option to show global stats
> >>   binder: Add stats, state and transactions files
> >>   binder: Make transaction_log available in binderfs
> >>   binder: Add binder_proc logging to binderfs
> >>
> >>  drivers/android/binder.c          |  95 ++++++-----
> >>  drivers/android/binder_internal.h |  84 ++++++++++
> >>  drivers/android/binderfs.c        | 255
> >++++++++++++++++++++++++++----
> >>  3 files changed, 362 insertions(+), 72 deletions(-)
> >>
> >> --
> >> 2.23.0.187.g17f5b7556c-goog
> >>