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Date:   Wed, 6 Dec 2017 14:38:29 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     John Garry <john.garry@...wei.com>
Cc:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        ak@...ux.intel.com, wcohen@...hat.com, will.deacon@....com,
        ganapatrao.kulkarni@...ium.com, catalin.marinas@....com,
        mark.rutland@....com, xuwei5@...ilicon.com, linuxarm@...wei.com,
        zhangshaokun@...ilicon.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/5] perf jevents: add support for pmu events vendor
 subdirectory

On Wed, Dec 06, 2017 at 12:13:15AM +0800, John Garry wrote:

SNIP

> diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
> index b578aa2..a0d489e 100644
> --- a/tools/perf/pmu-events/jevents.c
> +++ b/tools/perf/pmu-events/jevents.c
> @@ -588,7 +588,7 @@ static char *file_name_to_table_name(char *fname)
>  	 * Derive rest of table name from basename of the JSON file,
>  	 * replacing hyphens and stripping out .json suffix.
>  	 */
> -	n = asprintf(&tblname, "pme_%s", basename(fname));
> +	n = asprintf(&tblname, "pme_%s", fname);
>  	if (n < 0) {
>  		pr_info("%s: asprintf() error %s for file %s\n", prog,
>  				strerror(errno), fname);
> @@ -598,7 +598,7 @@ static char *file_name_to_table_name(char *fname)
>  	for (i = 0; i < strlen(tblname); i++) {
>  		c = tblname[i];
>  
> -		if (c == '-')
> +		if (c == '-' || c == '/')
>  			tblname[i] = '_';
>  		else if (c == '.') {
>  			tblname[i] = '\0';
> @@ -755,15 +755,52 @@ static int get_maxfds(void)
>  static FILE *eventsfp;
>  static char *mapfile;
>  
> +static int isLeafDir(const char *fpath)

we use _ to separate words in functions names

> +{
> +	DIR 		  *d;
> +	struct dirent *dir;
> +	int res = 1;
> +	d = opendir(fpath);
> +	if (!d)
> +		return 0;
> +
> +	while ((dir = readdir(d)) != NULL) {
> +		if (dir-> d_type == DT_DIR && dir->d_name[0] != '.') {
> +			res = 0;
> +			break;

just recently got into a issue on xfs when d_type is DT_UNKNOWN
for directory.. you need to handle it

thanks,
jirka

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