From: John Garry <john.ga...@huawei.com> Currently a topic subdirectory is supported in the pmu-events dir, in the following sample structure: /arch/platform/subtopic/mysubtopic.json
Upto 256 levels of topic subdirectories are supported. So this means that JSONs may be located in a topic dir as well as the platform dir. This topic subdirectory causes problems if we want to add support for a vendor dir in the pmu-events structure (in the form arch/platform/vendor), in that we cannot differentiate between a vendor dir and a topic dir. Since the topic dir feature is not used, drop it so it does not block adding vendor subdirectory support. Signed-off-by: John Garry <john.ga...@huawei.com> Acked-by: Jiri Olsa <jo...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Andi Kleen <a...@linux.intel.com> Cc: Ganapatrao Kulkarni <ganapatrao.kulka...@cavium.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Shaokun Zhang <zhangshao...@hisilicon.com> Cc: Will Deacon <will.dea...@arm.com> Cc: William Cohen <wco...@redhat.com> Cc: linux-arm-ker...@lists.infradead.org Cc: linux...@huawei.com Link: http://lkml.kernel.org/r/1520506716-197429-4-git-send-email-john.ga...@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/pmu-events/jevents.c | 37 ++++++++++--------------------------- 1 file changed, 10 insertions(+), 27 deletions(-) diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index edff989fbcea..1d02fafdc34d 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -256,25 +256,18 @@ static const char *field_to_perf(struct map *table, char *map, jsmntok_t *val) goto out_free; \ } } while (0) -#define TOPIC_DEPTH 256 -static char *topic_array[TOPIC_DEPTH]; -static int topic_level; +static char *topic; static char *get_topic(void) { - char *tp_old, *tp = NULL; + char *tp; int i; - for (i = 0; i < topic_level + 1; i++) { - int n; - - tp_old = tp; - n = asprintf(&tp, "%s%s", tp ?: "", topic_array[i]); - if (n < 0) { - pr_info("%s: asprintf() error %s\n", prog); - return NULL; - } - free(tp_old); + /* tp is free'd in process_one_file() */ + i = asprintf(&tp, "%s", topic); + if (i < 0) { + pr_info("%s: asprintf() error %s\n", prog); + return NULL; } for (i = 0; i < (int) strlen(tp); i++) { @@ -291,25 +284,15 @@ static char *get_topic(void) return tp; } -static int add_topic(int level, char *bname) +static int add_topic(char *bname) { - char *topic; - - level -= 2; - - if (level >= TOPIC_DEPTH) - return -EINVAL; - + free(topic); topic = strdup(bname); if (!topic) { pr_info("%s: strdup() error %s for file %s\n", prog, strerror(errno), bname); return -ENOMEM; } - - free(topic_array[topic_level]); - topic_array[topic_level] = topic; - topic_level = level; return 0; } @@ -824,7 +807,7 @@ static int process_one_file(const char *fpath, const struct stat *sb, } } - if (level > 1 && add_topic(level, bname)) + if (level > 1 && add_topic(bname)) return -ENOMEM; /* -- 2.14.3
