linux-kernel - Re: [PATCH perf/core v7 04/21] perf: Use SBUILD_ID_SIZE macro instead of BUILD_ID

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Message-ID: <20160511154735.GG3619@kernel.org>
Date:	Wed, 11 May 2016 12:47:35 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Masami Hiramatsu <mhiramat@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Hemant Kumar <hemant@...ux.vnet.ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>
Subject: Re: [PATCH perf/core v7 04/21] perf: Use SBUILD_ID_SIZE macro
 instead of BUILD_ID_SIZE macro

Em Wed, May 11, 2016 at 10:51:59PM +0900, Masami Hiramatsu escreveu:
> Use SBUILD_ID_SIZE macro instead of BUILD_ID_SIZE * 2 + 1 for
> allocating a buffer for build-id string.

Applied
 
> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
> ---
>  tools/perf/util/annotate.c                         |    2 +-
>  tools/perf/util/dso.c                              |    4 ++--
>  tools/perf/util/header.c                           |    2 +-
>  tools/perf/util/map.c                              |    2 +-
>  .../util/scripting-engines/trace-event-python.c    |    2 +-
>  tools/perf/util/symbol.c                           |    2 +-
>  6 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index 1168442..b811924 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -1138,7 +1138,7 @@ fallback:
>  
>  	if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
>  	    !dso__is_kcore(dso)) {
> -		char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
> +		char bf[SBUILD_ID_SIZE + 15] = " with build id ";
>  		char *build_id_msg = NULL;
>  
>  		if (dso->annotate_warned)
> diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
> index 8e639543..3357479 100644
> --- a/tools/perf/util/dso.c
> +++ b/tools/perf/util/dso.c
> @@ -38,7 +38,7 @@ int dso__read_binary_type_filename(const struct dso *dso,
>  				   enum dso_binary_type type,
>  				   char *root_dir, char *filename, size_t size)
>  {
> -	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
> +	char build_id_hex[SBUILD_ID_SIZE];
>  	int ret = 0;
>  	size_t len;
>  
> @@ -1301,7 +1301,7 @@ size_t __dsos__fprintf(struct list_head *head, FILE *fp)
>  
>  size_t dso__fprintf_buildid(struct dso *dso, FILE *fp)
>  {
> -	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
> +	char sbuild_id[SBUILD_ID_SIZE];
>  
>  	build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
>  	return fprintf(fp, "%s", sbuild_id);
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index c6000d4..08852dd 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -1474,7 +1474,7 @@ static int __event_process_build_id(struct build_id_event *bev,
>  
>  	dso = machine__findnew_dso(machine, filename);
>  	if (dso != NULL) {
> -		char sbuild_id[BUILD_ID_SIZE * 2 + 1];
> +		char sbuild_id[SBUILD_ID_SIZE];
>  
>  		dso__set_build_id(dso, &bev->build_id);
>  
> diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
> index 02c3186..b19bcd3 100644
> --- a/tools/perf/util/map.c
> +++ b/tools/perf/util/map.c
> @@ -289,7 +289,7 @@ int map__load(struct map *map, symbol_filter_t filter)
>  	nr = dso__load(map->dso, map, filter);
>  	if (nr < 0) {
>  		if (map->dso->has_build_id) {
> -			char sbuild_id[BUILD_ID_SIZE * 2 + 1];
> +			char sbuild_id[SBUILD_ID_SIZE];
>  
>  			build_id__sprintf(map->dso->build_id,
>  					  sizeof(map->dso->build_id),
> diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
> index 73ee12d..ff13470 100644
> --- a/tools/perf/util/scripting-engines/trace-event-python.c
> +++ b/tools/perf/util/scripting-engines/trace-event-python.c
> @@ -618,7 +618,7 @@ static int python_export_dso(struct db_export *dbe, struct dso *dso,
>  			     struct machine *machine)
>  {
>  	struct tables *tables = container_of(dbe, struct tables, dbe);
> -	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
> +	char sbuild_id[SBUILD_ID_SIZE];
>  	PyObject *t;
>  
>  	build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
> diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
> index 49caa91..18d81c1 100644
> --- a/tools/perf/util/symbol.c
> +++ b/tools/perf/util/symbol.c
> @@ -1630,7 +1630,7 @@ static int find_matching_kcore(struct map *map, char *dir, size_t dir_sz)
>  static char *dso__find_kallsyms(struct dso *dso, struct map *map)
>  {
>  	u8 host_build_id[BUILD_ID_SIZE];
> -	char sbuild_id[BUILD_ID_SIZE * 2 + 1];
> +	char sbuild_id[SBUILD_ID_SIZE];
>  	bool is_host = false;
>  	char path[PATH_MAX];
>