perf diff: Introduce fmt_to_data_file() helper
The fmt_to_data_file() is to retrieve struct data__file from
perf_hpp_fmt which is embedded in diff_hpp_fmt. It'll be used by sort
callback functions later.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1420677949-6719-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 3f86737..ae8f621 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -390,6 +390,15 @@
}
}
+static struct data__file *fmt_to_data_file(struct perf_hpp_fmt *fmt)
+{
+ struct diff_hpp_fmt *dfmt = container_of(fmt, struct diff_hpp_fmt, fmt);
+ void *ptr = dfmt - dfmt->idx;
+ struct data__file *d = container_of(ptr, struct data__file, fmt);
+
+ return d;
+}
+
static struct hist_entry*
get_pair_data(struct hist_entry *he, struct data__file *d)
{
@@ -407,8 +416,7 @@
static struct hist_entry*
get_pair_fmt(struct hist_entry *he, struct diff_hpp_fmt *dfmt)
{
- void *ptr = dfmt - dfmt->idx;
- struct data__file *d = container_of(ptr, struct data__file, fmt);
+ struct data__file *d = fmt_to_data_file(&dfmt->fmt);
return get_pair_data(he, d);
}