[PATCH 03/14] perf c2c: add function view type definitions and helpers

[Jiebin Sun]

Add the foundational type definitions and helper functions for the
function view browser:

- perf_c2c_ext: extended context holding function-grouped histograms
- c2c_function_browser: browser state wrapping hist_browser
- symbol_name_equal(): symbol comparison by name
- hist_entry__iaddr(): instruction address extraction helper
- c2c_hitm_count(): inline accessor for a c2c_stats HITM total

Signed-off-by: Jiebin Sun <jiebin.sun@xxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Dapeng Mi <dapeng1.mi@xxxxxxxxxxxxxxx>
Cc: Ian Rogers <irogers@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: James Clark <james.clark@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Falcon <thomas.falcon@xxxxxxxxx>
Reviewed-by: Tianyou Li <tianyou.li@xxxxxxxxx>
Reviewed-by: Wangyang Guo <wangyang.guo@xxxxxxxxx>
---
 tools/perf/ui/browsers/c2c-function.c | 29 +++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/perf/ui/browsers/c2c-function.c b/tools/perf/ui/browsers/c2c-function.c
index 040266288be3..dbc912a4a242 100644
--- a/tools/perf/ui/browsers/c2c-function.c
+++ b/tools/perf/ui/browsers/c2c-function.c
@@ -37,6 +37,35 @@
 #include "../../c2c.h"
 #include "hists.h"
 
+struct perf_c2c_ext {
+	struct c2c_hists	function_hists;
+	/* Cached across all level-1 entries; 0 means "not yet computed". */
+	u64			total_cycles;
+};
+
+static struct perf_c2c_ext c2c_ext __maybe_unused;
+
+struct c2c_function_browser {
+	struct hist_browser	hb;
+};
+
+static __maybe_unused inline u64 c2c_hitm_count(const struct c2c_stats *stats)
+{
+	return stats->tot_hitm;
+}
+
+static __maybe_unused inline bool symbol_name_equal(struct symbol *a, struct symbol *b)
+{
+	return a && b && arch__compare_symbol_names(a->name, b->name) == 0;
+}
+
+static __maybe_unused inline u64 hist_entry__iaddr(struct hist_entry *he)
+{
+	if (he->mem_info)
+		return mem_info__iaddr(he->mem_info)->addr;
+	return he->ip;
+}
+
 int perf_c2c__browse_function_view(struct hists *hists __maybe_unused)
 {
 	ui__warning("C2C function view is not implemented yet.\n");
-- 
2.52.0