linux-kernel - Re: [PATCH 0/4] tracing: improve symbolic printing

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Message-ID: <20231004132955.0fb3893d@gandalf.local.home>
Date:   Wed, 4 Oct 2023 13:29:55 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Johannes Berg <johannes@...solutions.net>,
        linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH 0/4] tracing: improve symbolic printing

On Wed, 4 Oct 2023 09:54:31 -0700
Jakub Kicinski <kuba@...nel.org> wrote:

> On Wed, 4 Oct 2023 12:35:24 -0400 Steven Rostedt wrote:
> > > Potentially naive question - the trace point holds enum skb_drop_reason.
> > > The user space can get the names from BTF. Can we not teach user space
> > > to generically look up names of enums in BTF?    
> > 
> > That puts a hard requirement to include BTF in builds where it was not
> > needed before. I really do not want to build with BTF just to get access to
> > these symbols. And since this is used by the embedded world, and BTF is
> > extremely bloated, the short answer is "No".  
> 
> Dunno. BTF is there most of the time. It could make the life of
> majority of the users far more pleasant.

BTF isn't there for a lot of developers working in embedded who use this
code. Most my users that I deal with have minimal environments, so BTF is a
showstopper.

> 
> I hope we can at least agree that the current methods of generating 
> the string arrays at C level are... aesthetically displeasing.

I don't know, I kinda like it ;-)

-- Steve