netdev - Re: [PATCH v5 09/10] perf tools: add a deep delete for parse event terms

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]
Date:   Wed, 6 Nov 2019 11:39:17 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andi Kleen <ak@...ux.intel.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, clang-built-linux@...glegroups.com,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v5 09/10] perf tools: add a deep delete for parse event
 terms

Em Wed, Nov 06, 2019 at 03:24:44PM +0100, Jiri Olsa escreveu:
> On Wed, Oct 30, 2019 at 03:34:47PM -0700, Ian Rogers wrote:
> > Add a parse_events_term deep delete function so that owned strings and
> > arrays are freed.
> > 
> > Signed-off-by: Ian Rogers <irogers@...gle.com>
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>

Thanks, applied,

- Arnaldo
> 
> thanks,
> jirka
> 
> > ---
> >  tools/perf/util/parse-events.c | 16 +++++++++++++---
> >  tools/perf/util/parse-events.h |  1 +
> >  tools/perf/util/parse-events.y | 12 ++----------
> >  tools/perf/util/pmu.c          |  2 +-
> >  4 files changed, 17 insertions(+), 14 deletions(-)
> > 
> > diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> > index a0a80f4e7038..6d18ff9bce49 100644
> > --- a/tools/perf/util/parse-events.c
> > +++ b/tools/perf/util/parse-events.c
> > @@ -2812,6 +2812,18 @@ int parse_events_term__clone(struct parse_events_term **new,
> >  	return new_term(new, &temp, str, 0);
> >  }
> >  
> > +void parse_events_term__delete(struct parse_events_term *term)
> > +{
> > +	if (term->array.nr_ranges)
> > +		zfree(&term->array.ranges);
> > +
> > +	if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM)
> > +		zfree(&term->val.str);
> > +
> > +	zfree(&term->config);
> > +	free(term);
> > +}
> > +
> >  int parse_events_copy_term_list(struct list_head *old,
> >  				 struct list_head **new)
> >  {
> > @@ -2842,10 +2854,8 @@ void parse_events_terms__purge(struct list_head *terms)
> >  	struct parse_events_term *term, *h;
> >  
> >  	list_for_each_entry_safe(term, h, terms, list) {
> > -		if (term->array.nr_ranges)
> > -			zfree(&term->array.ranges);
> >  		list_del_init(&term->list);
> > -		free(term);
> > +		parse_events_term__delete(term);
> >  	}
> >  }
> >  
> > diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
> > index 34f58d24a06a..5ee8ac93840c 100644
> > --- a/tools/perf/util/parse-events.h
> > +++ b/tools/perf/util/parse-events.h
> > @@ -139,6 +139,7 @@ int parse_events_term__sym_hw(struct parse_events_term **term,
> >  			      char *config, unsigned idx);
> >  int parse_events_term__clone(struct parse_events_term **new,
> >  			     struct parse_events_term *term);
> > +void parse_events_term__delete(struct parse_events_term *term);
> >  void parse_events_terms__delete(struct list_head *terms);
> >  void parse_events_terms__purge(struct list_head *terms);
> >  void parse_events__clear_array(struct parse_events_array *a);
> > diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
> > index 376b19855470..4cac830015be 100644
> > --- a/tools/perf/util/parse-events.y
> > +++ b/tools/perf/util/parse-events.y
> > @@ -49,14 +49,6 @@ static void free_list_evsel(struct list_head* list_evsel)
> >  	free(list_evsel);
> >  }
> >  
> > -static void free_term(struct parse_events_term *term)
> > -{
> > -	if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
> > -		free(term->val.str);
> > -	zfree(&term->array.ranges);
> > -	free(term);
> > -}
> > -
> >  static void inc_group_count(struct list_head *list,
> >  		       struct parse_events_state *parse_state)
> >  {
> > @@ -99,7 +91,7 @@ static void inc_group_count(struct list_head *list,
> >  %type <str> PE_DRV_CFG_TERM
> >  %destructor { free ($$); } <str>
> >  %type <term> event_term
> > -%destructor { free_term ($$); } <term>
> > +%destructor { parse_events_term__delete ($$); } <term>
> >  %type <list_terms> event_config
> >  %type <list_terms> opt_event_config
> >  %type <list_terms> opt_pmu_config
> > @@ -694,7 +686,7 @@ event_config ',' event_term
> >  	struct parse_events_term *term = $3;
> >  
> >  	if (!head) {
> > -		free_term(term);
> > +		parse_events_term__delete(term);
> >  		YYABORT;
> >  	}
> >  	list_add_tail(&term->list, head);
> > diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> > index f9f427d4c313..db1e57113f4b 100644
> > --- a/tools/perf/util/pmu.c
> > +++ b/tools/perf/util/pmu.c
> > @@ -1260,7 +1260,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms,
> >  		info->metric_name = alias->metric_name;
> >  
> >  		list_del_init(&term->list);
> > -		free(term);
> > +		parse_events_term__delete(term);
> >  	}
> >  
> >  	/*
> > -- 
> > 2.24.0.rc1.363.gb1bccd3e3d-goog
> > 

-- 

- Arnaldo