perf annotate: Move 'start' field struct to 'struct annotated_source'

It's only used in 'perf annotate' output which means functions with actual
samples.  No need to consume memory for every symbol ('struct annotation').
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240404175716.1225482-10-namhyung@kernel.org
Cc: Ian Rogers <irogers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc:  <linux-perf-users@vger.kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/annotate.c

@@ -909,9 +909,9 @@ int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
 	args.arch = arch;
 	args.ms = *ms;
 	if (annotate_opts.full_addr)
-		notes->start = map__objdump_2mem(ms->map, ms->sym->start);
+		notes->src->start = map__objdump_2mem(ms->map, ms->sym->start);
 	else
-		notes->start = map__rip_2objdump(ms->map, ms->sym->start);
+		notes->src->start = map__rip_2objdump(ms->map, ms->sym->start);
 
 	return symbol__disassemble(sym, &args);
 }
@@ -1456,9 +1456,9 @@ void annotation__toggle_full_addr(struct annotation *notes, struct map_symbol *m
 	annotate_opts.full_addr = !annotate_opts.full_addr;
 
 	if (annotate_opts.full_addr)
-		notes->start = map__objdump_2mem(ms->map, ms->sym->start);
+		notes->src->start = map__objdump_2mem(ms->map, ms->sym->start);
 	else
-		notes->start = map__rip_2objdump(ms->map, ms->sym->start);
+		notes->src->start = map__rip_2objdump(ms->map, ms->sym->start);
 
 	annotation__update_column_widths(notes);
 }
@@ -1766,7 +1766,7 @@ static void __annotation_line__write(struct annotation_line *al, struct annotati
 		int color = -1;
 
 		if (!annotate_opts.use_offset)
-			addr += notes->start;
+			addr += notes->src->start;
 
 		if (!annotate_opts.use_offset) {
 			printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);

tools/perf/util/annotate.h

@@ -270,6 +270,7 @@ struct annotated_source {
 	int			nr_entries;
 	int			nr_asm_entries;
 	int			max_jump_sources;
+	u64			start;
 	struct {
 		u8		addr;
 		u8		jumps;
@@ -312,7 +313,6 @@ struct annotated_branch {
 };
 
 struct LOCKABLE annotation {
-	u64			start;
 	struct annotated_source *src;
 	struct annotated_branch *branch;
 };