perf thread: Introduce thread__find_map()

Out of thread__find_add_map(..., MAP__FUNCTION, ...), idea here is to
continue removing references to MAP__{FUNCTION,VARIABLE} ahead of
getting both types of symbols in the same rbtree, as various places do
two lookups, looking first at MAP__FUNCTION, then at MAP__VARIABLE.

So thread__find_map() will eventually do just that, and 'struct symbol'
will have the symbol type, for code that cares about that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-q27xee34l4izpfau49w103s6@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-inject.c

@@ -440,7 +440,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
 		goto repipe;
 	}
 
-	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al);
+	thread__find_map(thread, sample->cpumode, sample->ip, &al);
 
 	if (al.map != NULL) {
 		if (!al.map->dso->hit) {

tools/perf/builtin-script.c

@@ -717,8 +717,8 @@ static int perf_sample__fprintf_brstack(struct perf_sample *sample,
 		if (PRINT_FIELD(DSO)) {
 			memset(&alf, 0, sizeof(alf));
 			memset(&alt, 0, sizeof(alt));
-			thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
-			thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
+			thread__find_map(thread, sample->cpumode, from, &alf);
+			thread__find_map(thread, sample->cpumode, to, &alt);
 		}
 
 		printed += fprintf(fp, " 0x%"PRIx64, from);
@@ -764,11 +764,11 @@ static int perf_sample__fprintf_brstacksym(struct perf_sample *sample,
 		from = br->entries[i].from;
 		to   = br->entries[i].to;
 
-		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
+		thread__find_map(thread, sample->cpumode, from, &alf);
 		if (alf.map)
 			alf.sym = map__find_symbol(alf.map, alf.addr);
 
-		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
+		thread__find_map(thread, sample->cpumode, to, &alt);
 		if (alt.map)
 			alt.sym = map__find_symbol(alt.map, alt.addr);
 
@@ -814,11 +814,11 @@ static int perf_sample__fprintf_brstackoff(struct perf_sample *sample,
 		from = br->entries[i].from;
 		to   = br->entries[i].to;
 
-		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
+		thread__find_map(thread, sample->cpumode, from, &alf);
 		if (alf.map && !alf.map->dso->adjust_symbols)
 			from = map__map_ip(alf.map, from);
 
-		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
+		thread__find_map(thread, sample->cpumode, to, &alt);
 		if (alt.map && !alt.map->dso->adjust_symbols)
 			to = map__map_ip(alt.map, to);
 
@@ -882,7 +882,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end,
 		return 0;
 	}
 
-	thread__find_addr_map(thread, *cpumode, MAP__FUNCTION, start, &al);
+	thread__find_map(thread, *cpumode, start, &al);
 	if (!al.map || !al.map->dso) {
 		pr_debug("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end);
 		return 0;
@@ -933,10 +933,9 @@ static int ip__fprintf_sym(uint64_t addr, struct thread *thread,
 
 	memset(&al, 0, sizeof(al));
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al);
+	thread__find_map(thread, cpumode, addr, &al);
 	if (!al.map)
-		thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
-				      addr, &al);
+		__thread__find_map(thread, cpumode, MAP__VARIABLE, addr, &al);
 	if ((*lastsym) && al.addr >= (*lastsym)->start && al.addr < (*lastsym)->end)
 		return 0;
 

tools/perf/tests/code-reading.c

@@ -236,14 +236,14 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
 
 	pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr);
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, addr, &al);
+	thread__find_map(thread, cpumode, addr, &al);
 	if (!al.map || !al.map->dso) {
 		if (cpumode == PERF_RECORD_MISC_HYPERVISOR) {
 			pr_debug("Hypervisor address can not be resolved - skipping\n");
 			return 0;
 		}
 
-		pr_debug("thread__find_addr_map failed\n");
+		pr_debug("thread__find_map failed\n");
 		return -1;
 	}
 

tools/perf/tests/mmap-thread-lookup.c

@@ -188,8 +188,7 @@ static int mmap_events(synth_cb synth)
 
 		pr_debug("looking for map %p\n", td->map);
 
-		thread__find_addr_map(thread,
-				      PERF_RECORD_MISC_USER, MAP__FUNCTION,
+		thread__find_map(thread, PERF_RECORD_MISC_USER,
 				 (unsigned long) (td->map + 1), &al);
 
 		thread__put(thread);
@@ -218,7 +217,7 @@ static int mmap_events(synth_cb synth)
  *   perf_event__synthesize_threads    (global)
  *
  * We test we can find all memory maps via:
- *   thread__find_addr_map
+ *   thread__find_map
  *
  * by using all thread objects.
  */

tools/perf/util/build-id.c

@@ -47,7 +47,7 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
 		return -1;
 	}
 
-	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al);
+	thread__find_map(thread, sample->cpumode, sample->ip, &al);
 
 	if (al.map != NULL)
 		al.map->dso->hit = 1;

tools/perf/util/cs-etm.c

@@ -269,7 +269,7 @@ static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u64 address,
 		thread = etmq->etm->unknown_thread;
 	}
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, address, &al);
+	thread__find_map(thread, cpumode, address, &al);
 
 	if (!al.map || !al.map->dso)
 		return 0;

tools/perf/util/event.c

@@ -1489,9 +1489,8 @@ int perf_event__process(struct perf_tool *tool __maybe_unused,
 	return machine__process_event(machine, event, sample);
 }
 
-void thread__find_addr_map(struct thread *thread, u8 cpumode,
-			   enum map_type type, u64 addr,
-			   struct addr_location *al)
+void __thread__find_map(struct thread *thread, u8 cpumode, enum map_type type,
+			u64 addr, struct addr_location *al)
 {
 	struct map_groups *mg = thread->mg;
 	struct machine *machine = mg->machine;
@@ -1569,7 +1568,7 @@ void thread__find_addr_location(struct thread *thread,
 				u8 cpumode, enum map_type type, u64 addr,
 				struct addr_location *al)
 {
-	thread__find_addr_map(thread, cpumode, type, addr, al);
+	__thread__find_map(thread, cpumode, type, addr, al);
 	if (al->map != NULL)
 		al->sym = map__find_symbol(al->map, al->addr);
 	else
@@ -1590,7 +1589,7 @@ int machine__resolve(struct machine *machine, struct addr_location *al,
 		return -1;
 
 	dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
-	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al);
+	thread__find_map(thread, sample->cpumode, sample->ip, al);
 	dump_printf(" ...... dso: %s\n",
 		    al->map ? al->map->dso->long_name :
 			al->level == 'H' ? "[hypervisor]" : "<not found>");
@@ -1669,10 +1668,11 @@ bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 void thread__resolve(struct thread *thread, struct addr_location *al,
 		     struct perf_sample *sample)
 {
-	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al);
-	if (!al->map)
-		thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE,
+	thread__find_map(thread, sample->cpumode, sample->addr, al);
+	if (!al->map) {
+		__thread__find_map(thread, sample->cpumode, MAP__VARIABLE,
 				   sample->addr, al);
+	}
 
 	al->cpu = sample->cpu;
 	al->sym = NULL;

tools/perf/util/intel-bts.c

@@ -335,7 +335,7 @@ static int intel_bts_get_next_insn(struct intel_bts_queue *btsq, u64 ip)
 	if (!thread)
 		return -1;
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, ip, &al);
+	thread__find_map(thread, cpumode, ip, &al);
 	if (!al.map || !al.map->dso)
 		goto out_put;
 

tools/perf/util/intel-pt.c

@@ -442,7 +442,7 @@ static int intel_pt_walk_next_insn(struct intel_pt_insn *intel_pt_insn,
 	}
 
 	while (1) {
-		thread__find_addr_map(thread, cpumode, MAP__FUNCTION, *ip, &al);
+		thread__find_map(thread, cpumode, *ip, &al);
 		if (!al.map || !al.map->dso)
 			return -EINVAL;
 
@@ -596,7 +596,7 @@ static int __intel_pt_pgd_ip(uint64_t ip, void *data)
 	if (!thread)
 		return -EINVAL;
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, ip, &al);
+	thread__find_map(thread, cpumode, ip, &al);
 	if (!al.map || !al.map->dso)
 		return -EINVAL;
 

tools/perf/util/thread.h

@@ -92,9 +92,14 @@ size_t thread__fprintf(struct thread *thread, FILE *fp);
 
 struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
 
-void thread__find_addr_map(struct thread *thread,
-			   u8 cpumode, enum map_type type, u64 addr,
-			   struct addr_location *al);
+void __thread__find_map(struct thread *thread, u8 cpumode, enum map_type type,
+			u64 addr, struct addr_location *al);
+
+static inline void thread__find_map(struct thread *thread, u8 cpumode,
+				    u64 addr, struct addr_location *al)
+{
+	__thread__find_map(thread, cpumode, MAP__FUNCTION, addr, al);
+}
 
 void thread__find_addr_location(struct thread *thread,
 				u8 cpumode, enum map_type type, u64 addr,

tools/perf/util/unwind-libdw.c

@@ -103,15 +103,14 @@ static int access_dso_mem(struct unwind_info *ui, Dwarf_Addr addr,
 	struct addr_location al;
 	ssize_t size;
 
-	thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
-			      MAP__FUNCTION, addr, &al);
+	thread__find_map(ui->thread, PERF_RECORD_MISC_USER, addr, &al);
 	if (!al.map) {
 		/*
 		 * We've seen cases (softice) where DWARF unwinder went
 		 * through non executable mmaps, which we need to lookup
 		 * in MAP__VARIABLE tree.
 		 */
-		thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
+		__thread__find_map(ui->thread, PERF_RECORD_MISC_USER,
 				   MAP__VARIABLE, addr, &al);
 	}
 

tools/perf/util/unwind-libunwind-local.c

@@ -367,15 +367,14 @@ static struct map *find_map(unw_word_t ip, struct unwind_info *ui)
 {
 	struct addr_location al;
 
-	thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
-			      MAP__FUNCTION, ip, &al);
+	thread__find_map(ui->thread, PERF_RECORD_MISC_USER, ip, &al);
 	if (!al.map) {
 		/*
 		 * We've seen cases (softice) where DWARF unwinder went
 		 * through non executable mmaps, which we need to lookup
 		 * in MAP__VARIABLE tree.
 		 */
-		thread__find_addr_map(ui->thread, PERF_RECORD_MISC_USER,
+		__thread__find_map(ui->thread, PERF_RECORD_MISC_USER,
 				   MAP__VARIABLE, ip, &al);
 	}
 	return al.map;