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

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Date:   Sun, 4 Mar 2018 09:12:45 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.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

> > +#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.

-Andi