linux-kernel - Re: [PATCH 0/2] quickstats, kernel sample collector

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Message-ID: <CAMOZA0+4Qg+bDQ1xGQ0jL=dvXK80LuxOa7tEd-=iBwat2M9pfg@mail.gmail.com>
Date:   Wed, 26 Feb 2020 01:52:25 -0800
From:   Luigi Rizzo <lrizzo@...gle.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Masami Hiramatsu <mhiramat@...nel.org>,
        akpm@...ux-foundation.org, naveen.n.rao@...ux.ibm.com,
        ardb@...nel.org, Luigi Rizzo <rizzo@....unipi.it>,
        Paolo Abeni <pabeni@...hat.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>
Subject: Re: [PATCH 0/2] quickstats, kernel sample collector

On Wed, Feb 26, 2020 at 12:10 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Tue, Feb 25, 2020 at 06:30:25PM -0800, Luigi Rizzo wrote:
> > This patchset introduces a small library to collect per-cpu samples and
> > accumulate distributions to be exported through debugfs.
>
> Shouldn't this be part of the tracing infrastructure instead of being
> "stand-alone"?

That's an option. My reasoning for making it standalone was that
there are no dependencies in the (trivial) collection/aggregation part,
so that code might conveniently replace/extend existing snippets of
code that collect distributions in ad-hoc and perhaps suboptimal ways.

cheers
luigi