linux-kernel - Re: [PATCH v2 2/5] perf-probe: Cut off the version suffix from event name

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Message-ID: <20171207175529.GI3173@kernel.org>
Date:   Thu, 7 Dec 2017 14:55:29 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Paul Clarke <pc@...ibm.com>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        bhargavb <bhargavaramudu@...il.com>,
        linux-kernel@...r.kernel.org,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>,
        linux-rt-users@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v2 2/5] perf-probe: Cut off the version suffix from event
 name

Em Thu, Dec 07, 2017 at 11:24:47AM -0600, Paul Clarke escreveu:
> On 12/07/2017 10:56 AM, Arnaldo Carvalho de Melo wrote:
> > Em Thu, Dec 07, 2017 at 04:20:28PM +0900, Masami Hiramatsu escreveu:
> > See also Paul Clarke's question and suggestion, which I agree, i.e.
> > instead of chopping off the version, just replace the chars with valid
> > ones or better, do what Paul suggests, be more flexible in interpreting
> > @, i.e. if it is a number and/or fails to point to any file, interpret
> > it as versioning.
 
> It's a nit, and subjective, but I'd favor checking for versioning
> first, then file.  The namespaces are very unlikely to intersect, but
> I could foresee symbols like "sym@...lA.c" and "sym@...lB.c" more
> likely than a symbol in a file "GLIBC_2.2.5".
 
> Perhaps straying toward bikeshedding...

Nah, those are valid concerns, and I share them.

- Arnaldo