perf tools: Add helper functions for some sort keys

The 'trace', 'srcline' and 'srcfile' sort keys updates hist entry's
field later.  With the hierarchy mode, those fields are passed to a
matching entry so it needs to identify the sort keys.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-2-git-send-email-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/hist.h

@@ -301,6 +301,9 @@ void perf_hpp__append_sort_keys(struct perf_hpp_list *list);
 bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
 bool perf_hpp__is_dynamic_entry(struct perf_hpp_fmt *format);
 bool perf_hpp__defined_dynamic_entry(struct perf_hpp_fmt *fmt, struct hists *hists);
+bool perf_hpp__is_trace_entry(struct perf_hpp_fmt *fmt);
+bool perf_hpp__is_srcline_entry(struct perf_hpp_fmt *fmt);
+bool perf_hpp__is_srcfile_entry(struct perf_hpp_fmt *fmt);
 
 static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format,
 					 struct hists *hists)

tools/perf/util/sort.c

@@ -1391,6 +1391,39 @@ bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format)
 	return format->header == __sort__hpp_header;
 }
 
+bool perf_hpp__is_trace_entry(struct perf_hpp_fmt *fmt)
+{
+	struct hpp_sort_entry *hse;
+
+	if (!perf_hpp__is_sort_entry(fmt))
+		return false;
+
+	hse = container_of(fmt, struct hpp_sort_entry, hpp);
+	return hse->se == &sort_trace;
+}
+
+bool perf_hpp__is_srcline_entry(struct perf_hpp_fmt *fmt)
+{
+	struct hpp_sort_entry *hse;
+
+	if (!perf_hpp__is_sort_entry(fmt))
+		return false;
+
+	hse = container_of(fmt, struct hpp_sort_entry, hpp);
+	return hse->se == &sort_srcline;
+}
+
+bool perf_hpp__is_srcfile_entry(struct perf_hpp_fmt *fmt)
+{
+	struct hpp_sort_entry *hse;
+
+	if (!perf_hpp__is_sort_entry(fmt))
+		return false;
+
+	hse = container_of(fmt, struct hpp_sort_entry, hpp);
+	return hse->se == &sort_srcfile;
+}
+
 static bool __sort__hpp_equal(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
 {
 	struct hpp_sort_entry *hse_a;