linux-kernel - Re: [PATCH v4 6/8] perf/tools: Enhance JSON/metric infrastructure to handle "?"

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200312105145.GC311223@krava>
Date:   Thu, 12 Mar 2020 11:51:45 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Kajol Jain <kjain@...ux.ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        mpe@...erman.id.au, sukadev@...ux.vnet.ibm.com,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        anju@...ux.vnet.ibm.com, maddy@...ux.vnet.ibm.com,
        ravi.bangoria@...ux.ibm.com, peterz@...radead.org,
        yao.jin@...ux.intel.com, ak@...ux.intel.com, jolsa@...nel.org,
        kan.liang@...ux.intel.com, jmario@...hat.com,
        alexander.shishkin@...ux.intel.com, mingo@...nel.org,
        paulus@...abs.org, namhyung@...nel.org, mpetlan@...hat.com,
        gregkh@...uxfoundation.org, benh@...nel.crashing.org,
        mamatha4@...ux.vnet.ibm.com, mark.rutland@....com,
        tglx@...utronix.de
Subject: Re: [PATCH v4 6/8] perf/tools: Enhance JSON/metric infrastructure to
 handle "?"

On Tue, Mar 10, 2020 at 03:34:55PM -0300, Arnaldo Carvalho de Melo wrote:

SNIP

> > diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
> > index 3b4cdfc5efd6..036f6b2ce202 100644
> > --- a/tools/perf/arch/powerpc/util/header.c
> > +++ b/tools/perf/arch/powerpc/util/header.c
> > @@ -7,6 +7,11 @@
> >  #include <string.h>
> >  #include <linux/stringify.h>
> >  #include "header.h"
> > +#include "metricgroup.h"
> > +#include "evlist.h"
> > +#include <dirent.h>
> > +#include "pmu.h"
> > +#include <api/fs/fs.h>
> >  
> >  #define mfspr(rn)       ({unsigned long rval; \
> >  			 asm volatile("mfspr %0," __stringify(rn) \
> > @@ -16,6 +21,8 @@
> >  #define PVR_VER(pvr)    (((pvr) >>  16) & 0xFFFF) /* Version field */
> >  #define PVR_REV(pvr)    (((pvr) >>   0) & 0xFFFF) /* Revison field */
> >  
> > +#define SOCKETS_INFO_FILE_PATH "/devices/hv_24x7/interface/"
> > +
> >  int
> >  get_cpuid(char *buffer, size_t sz)
> >  {
> > @@ -44,3 +51,18 @@ get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
> >  
> >  	return bufp;
> >  }
> > +
> > +int arch_get_runtimeparam(void)
> > +{
> > +	int count;
> > +	char path[PATH_MAX];
> > +	char filename[] = "sockets";
> > +
> > +	snprintf(path, PATH_MAX,
> > +		 SOCKETS_INFO_FILE_PATH "%s", filename);

also, what's the point of using snprintf in here?

jirka