linux-kernel - Re: [RFC V2 1/3] perf, tools: Support wildcards on pmu name in dynamic pmu events

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Message-ID: <20180304181010.GA7030@krava>
Date:   Sun, 4 Mar 2018 19:10:10 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     Agustin Vega-Frias <agustinv@...eaurora.org>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>, timur@...eaurora.org
Subject: Re: [RFC V2 1/3] perf, tools: Support wildcards on pmu name in
 dynamic pmu events

On Sun, Mar 04, 2018 at 09:12:45AM -0800, Andi Kleen wrote:
> > > +#include <fnmatch.h>
> > >  #include <linux/compiler.h>
> > >  #include <linux/list.h>
> > >  #include <linux/types.h>
> > > @@ -241,7 +242,7 @@ PE_NAME opt_event_config
> > >  			if (!strncmp(name, "uncore_", 7) &&
> > >  			    strncmp($1, "uncore_", 7))
> > >  				name += 7;
> > > -			if (!strncmp($1, name, strlen($1))) {
> > > +			if (!strncmp($1, name, strlen($1)) || !fnmatch($1, name, 0)) {
> > 
> > could we now get rid of the strncmp in here and keep the
> > glob matching only? 
> 
> That would break existing command lines. Not a good idea.

I hoped that only you guys are using this and would rewrite your scripts ;-)

I had no idea there's fnmatch func before.. too bad, ok

jirka