perf data: Add perf_data__update_dir() function

Add perf_data__update_dir() to update the size for every file within the
perf.data directory.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190308134745.5057-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 18fa8d4..5d0f26a 100644 (file)
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -124,6 +124,26 @@ out_err:
        return ret;
 }
 
+int perf_data__update_dir(struct perf_data *data)
+{
+       int i;
+
+       if (WARN_ON(!data->is_dir))
+               return -EINVAL;
+
+       for (i = 0; i < data->dir.nr; i++) {
+               struct perf_data_file *file = &data->dir.files[i];
+               struct stat st;
+
+               if (fstat(file->fd, &st))
+                       return -1;
+
+               file->size = st.st_size;
+       }
+
+       return 0;
+}
+
 static bool check_pipe(struct perf_data *data)
 {
        struct stat st;

diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h
index 06aefed..0deeb1a 100644 (file)
--- a/tools/perf/util/data.h
+++ b/tools/perf/util/data.h
@@ -79,4 +79,5 @@ int perf_data__switch(struct perf_data *data,
 int perf_data__create_dir(struct perf_data *data, int nr);
 int perf_data__open_dir(struct perf_data *data);
 void perf_data__close_dir(struct perf_data *data);
+int perf_data__update_dir(struct perf_data *data);
 #endif /* __PERF_DATA_H */