perf symbols: Remove symbol_filter_t machinery

We're not using it anymore, few users were, but we really could do
without it, simplify lots of functions by removing it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-1zng8wdznn00iiz08bb7q3vn@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/powerpc/util/sym-handling.c

@@ -108,7 +108,7 @@ void arch__post_process_probe_trace_events(struct perf_probe_event *pev,
 	int i = 0;
 
 	map = get_target_map(pev->target, pev->uprobes);
-	if (!map || map__load(map, NULL) < 0)
+	if (!map || map__load(map) < 0)
 		return;
 
 	for (i = 0; i < ntevs; i++) {

tools/perf/builtin-inject.c

@@ -429,7 +429,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
 	if (al.map != NULL) {
 		if (!al.map->dso->hit) {
 			al.map->dso->hit = 1;
-			if (map__load(al.map, NULL) >= 0) {
+			if (map__load(al.map) >= 0) {
 				dso__inject_build_id(al.map->dso, tool, machine);
 				/*
 				 * If this fails, too bad, let the other side

tools/perf/builtin-kmem.c

@@ -330,7 +330,7 @@ static int build_alloc_func_list(void)
 	}
 
 	kernel_map = machine__kernel_map(machine);
-	if (map__load(kernel_map, NULL) < 0) {
+	if (map__load(kernel_map) < 0) {
 		pr_err("cannot load kernel map\n");
 		return -ENOENT;
 	}
@@ -979,7 +979,7 @@ static void __print_slab_result(struct rb_root *root,
 		if (is_caller) {
 			addr = data->call_site;
 			if (!raw_ip)
-				sym = machine__find_kernel_function(machine, addr, &map, NULL);
+				sym = machine__find_kernel_function(machine, addr, &map);
 		} else
 			addr = data->ptr;
 
@@ -1043,8 +1043,7 @@ static void __print_page_alloc_result(struct perf_session *session, int n_lines)
 		char *caller = buf;
 
 		data = rb_entry(next, struct page_stat, node);
-		sym = machine__find_kernel_function(machine, data->callsite,
-						    &map, NULL);
+		sym = machine__find_kernel_function(machine, data->callsite, &map);
 		if (sym && sym->name)
 			caller = sym->name;
 		else
@@ -1086,8 +1085,7 @@ static void __print_page_caller_result(struct perf_session *session, int n_lines
 		char *caller = buf;
 
 		data = rb_entry(next, struct page_stat, node);
-		sym = machine__find_kernel_function(machine, data->callsite,
-						    &map, NULL);
+		sym = machine__find_kernel_function(machine, data->callsite, &map);
 		if (sym && sym->name)
 			caller = sym->name;
 		else

tools/perf/builtin-script.c

@@ -522,11 +522,11 @@ static void print_sample_brstacksym(struct perf_sample *sample,
 
 		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, from, &alf);
 		if (alf.map)
-			alf.sym = map__find_symbol(alf.map, alf.addr, NULL);
+			alf.sym = map__find_symbol(alf.map, alf.addr);
 
 		thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, to, &alt);
 		if (alt.map)
-			alt.sym = map__find_symbol(alt.map, alt.addr, NULL);
+			alt.sym = map__find_symbol(alt.map, alt.addr);
 
 		symbol__fprintf_symname_offs(alf.sym, &alf, stdout);
 		putchar('/');

tools/perf/tests/code-reading.c

@@ -263,7 +263,7 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
 	 * Converting addresses for use by objdump requires more information.
 	 * map__load() does that.  See map__rip_2objdump() for details.
 	 */
-	if (map__load(al.map, NULL))
+	if (map__load(al.map))
 		return -1;
 
 	/* objdump struggles with kcore - try each map only once */
@@ -511,7 +511,7 @@ static int do_test_code_reading(bool try_kcore)
 
 	/* Load kernel map */
 	map = machine__kernel_map(machine);
-	ret = map__load(map, NULL);
+	ret = map__load(map);
 	if (ret < 0) {
 		pr_debug("map__load failed\n");
 		goto out_err;

tools/perf/tests/vmlinux-kallsyms.c

@@ -54,7 +54,7 @@ int test__vmlinux_matches_kallsyms(int subtest __maybe_unused)
 	 * be compacted against the list of modules found in the "vmlinux"
 	 * code and with the one got from /proc/modules from the "kallsyms" code.
 	 */
-	if (__machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, true, NULL) <= 0) {
+	if (__machine__load_kallsyms(&kallsyms, "/proc/kallsyms", type, true) <= 0) {
 		pr_debug("dso__load_kallsyms ");
 		goto out;
 	}
@@ -92,7 +92,7 @@ int test__vmlinux_matches_kallsyms(int subtest __maybe_unused)
 	 * maps__reloc_vmlinux will notice and set proper ->[un]map_ip routines
 	 * to fixup the symbols.
 	 */
-	if (machine__load_vmlinux_path(&vmlinux, type, NULL) <= 0) {
+	if (machine__load_vmlinux_path(&vmlinux, type) <= 0) {
 		pr_debug("Couldn't find a vmlinux that matches the kernel running on this machine, skipping test\n");
 		err = TEST_SKIP;
 		goto out;
@@ -118,7 +118,7 @@ int test__vmlinux_matches_kallsyms(int subtest __maybe_unused)
 		mem_end = vmlinux_map->unmap_ip(vmlinux_map, sym->end);
 
 		first_pair = machine__find_kernel_symbol(&kallsyms, type,
-							 mem_start, NULL, NULL);
+							 mem_start, NULL);
 		pair = first_pair;
 
 		if (pair && UM(pair->start) == mem_start) {
@@ -147,7 +147,7 @@ int test__vmlinux_matches_kallsyms(int subtest __maybe_unused)
 				 */
 				continue;
 			} else {
-				pair = machine__find_kernel_symbol_by_name(&kallsyms, type, sym->name, NULL, NULL);
+				pair = machine__find_kernel_symbol_by_name(&kallsyms, type, sym->name, NULL);
 				if (pair) {
 					if (UM(pair->start) == mem_start)
 						goto next_pair;

tools/perf/ui/browsers/annotate.c

@@ -495,7 +495,7 @@ static bool annotate_browser__callq(struct annotate_browser *browser,
 	if (!ins__is_call(dl->ins))
 		return false;
 
-	if (map_groups__find_ams(&target, NULL) ||
+	if (map_groups__find_ams(&target) ||
 	    map__rip_2objdump(target.map, target.map->map_ip(target.map,
 							     target.addr)) !=
 	    dl->ops.target.addr) {

tools/perf/ui/browsers/map.c

@@ -52,9 +52,9 @@ static int map_browser__search(struct map_browser *browser)
 
 	if (target[0] == '0' && tolower(target[1]) == 'x') {
 		u64 addr = strtoull(target, NULL, 16);
-		sym = map__find_symbol(browser->map, addr, NULL);
+		sym = map__find_symbol(browser->map, addr);
 	} else
-		sym = map__find_symbol_by_name(browser->map, target, NULL);
+		sym = map__find_symbol_by_name(browser->map, target);
 
 	if (sym != NULL) {
 		u32 *idx = symbol__browser_index(sym);

tools/perf/util/annotate.c

@@ -1077,7 +1077,7 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
 			.addr = dl->ops.target.addr,
 		};
 
-		if (!map_groups__find_ams(&target, NULL) &&
+		if (!map_groups__find_ams(&target) &&
 		    target.sym->start == target.al_addr)
 			dl->ops.target.name = strdup(target.sym->name);
 	}

tools/perf/util/event.c

@@ -1286,7 +1286,7 @@ void thread__find_addr_map(struct thread *thread, u8 cpumode,
 		 * must be done prior to using kernel maps.
 		 */
 		if (load_map)
-			map__load(al->map, NULL);
+			map__load(al->map);
 		al->addr = al->map->map_ip(al->map, al->addr);
 	}
 }
@@ -1297,7 +1297,7 @@ void thread__find_addr_location(struct thread *thread,
 {
 	thread__find_addr_map(thread, cpumode, type, addr, al);
 	if (al->map != NULL)
-		al->sym = map__find_symbol(al->map, al->addr, NULL);
+		al->sym = map__find_symbol(al->map, al->addr);
 	else
 		al->sym = NULL;
 }
@@ -1358,7 +1358,7 @@ int machine__resolve(struct machine *machine, struct addr_location *al,
 			al->filtered |= (1 << HIST_FILTER__DSO);
 		}
 
-		al->sym = map__find_symbol(al->map, al->addr, NULL);
+		al->sym = map__find_symbol(al->map, al->addr);
 	}
 
 	if (symbol_conf.sym_list &&
@@ -1414,5 +1414,5 @@ void thread__resolve(struct thread *thread, struct addr_location *al,
 	al->sym = NULL;
 
 	if (al->map)
-		al->sym = map__find_symbol(al->map, al->addr, NULL);
+		al->sym = map__find_symbol(al->map, al->addr);
 }

tools/perf/util/intel-bts.c

@@ -346,7 +346,7 @@ static int intel_bts_get_next_insn(struct intel_bts_queue *btsq, u64 ip)
 		goto out_put;
 
 	/* Load maps to ensure dso->is_64_bit has been updated */
-	map__load(al.map, NULL);
+	map__load(al.map);
 
 	x86_64 = al.map->dso->is_64_bit;
 

tools/perf/util/intel-pt.c

@@ -477,7 +477,7 @@ static int intel_pt_walk_next_insn(struct intel_pt_insn *intel_pt_insn,
 		start_ip = *ip;
 
 		/* Load maps to ensure dso->is_64_bit has been updated */
-		map__load(al.map, NULL);
+		map__load(al.map);
 
 		x86_64 = al.map->dso->is_64_bit;
 
@@ -1294,7 +1294,7 @@ static u64 intel_pt_switch_ip(struct intel_pt *pt, u64 *ptss_ip)
 	if (!map)
 		return 0;
 
-	if (map__load(map, NULL))
+	if (map__load(map))
 		return 0;
 
 	start = dso__first_symbol(map->dso, MAP__FUNCTION);

tools/perf/util/machine.c

@@ -897,10 +897,10 @@ int machines__create_kernel_maps(struct machines *machines, pid_t pid)
 }
 
 int __machine__load_kallsyms(struct machine *machine, const char *filename,
-			     enum map_type type, bool no_kcore, symbol_filter_t filter)
+			     enum map_type type, bool no_kcore)
 {
 	struct map *map = machine__kernel_map(machine);
-	int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore, filter);
+	int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore);
 
 	if (ret > 0) {
 		dso__set_loaded(map->dso, type);
@@ -916,16 +916,15 @@ int __machine__load_kallsyms(struct machine *machine, const char *filename,
 }
 
 int machine__load_kallsyms(struct machine *machine, const char *filename,
-			   enum map_type type, symbol_filter_t filter)
+			   enum map_type type)
 {
-	return __machine__load_kallsyms(machine, filename, type, false, filter);
+	return __machine__load_kallsyms(machine, filename, type, false);
 }
 
-int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
-			       symbol_filter_t filter)
+int machine__load_vmlinux_path(struct machine *machine, enum map_type type)
 {
 	struct map *map = machine__kernel_map(machine);
-	int ret = dso__load_vmlinux_path(map->dso, map, filter);
+	int ret = dso__load_vmlinux_path(map->dso, map);
 
 	if (ret > 0)
 		dso__set_loaded(map->dso, type);
@@ -1294,7 +1293,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 			/*
 			 * preload dso of guest kernel and modules
 			 */
-			dso__load(kernel, machine__kernel_map(machine), NULL);
+			dso__load(kernel, machine__kernel_map(machine));
 		}
 	}
 	return 0;
@@ -2096,7 +2095,7 @@ int machine__get_kernel_start(struct machine *machine)
 	 */
 	machine->kernel_start = 1ULL << 63;
 	if (map) {
-		err = map__load(map, NULL);
+		err = map__load(map);
 		if (map->start)
 			machine->kernel_start = map->start;
 	}
@@ -2112,7 +2111,7 @@ char *machine__resolve_kernel_addr(void *vmachine, unsigned long long *addrp, ch
 {
 	struct machine *machine = vmachine;
 	struct map *map;
-	struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map,  NULL);
+	struct symbol *sym = map_groups__find_symbol(&machine->kmaps, MAP__FUNCTION, *addrp, &map);
 
 	if (sym == NULL)
 		return NULL;

tools/perf/util/machine.h

@@ -174,40 +174,33 @@ size_t machine__fprintf(struct machine *machine, FILE *fp);
 static inline
 struct symbol *machine__find_kernel_symbol(struct machine *machine,
 					   enum map_type type, u64 addr,
-					   struct map **mapp,
-					   symbol_filter_t filter)
+					   struct map **mapp)
 {
-	return map_groups__find_symbol(&machine->kmaps, type, addr,
-				       mapp, filter);
+	return map_groups__find_symbol(&machine->kmaps, type, addr, mapp);
 }
 
 static inline
 struct symbol *machine__find_kernel_symbol_by_name(struct machine *machine,
 						   enum map_type type, const char *name,
-						   struct map **mapp,
-						   symbol_filter_t filter)
+						   struct map **mapp)
 {
-	return map_groups__find_symbol_by_name(&machine->kmaps, type, name,
-					       mapp, filter);
+	return map_groups__find_symbol_by_name(&machine->kmaps, type, name, mapp);
 }
 
 static inline
 struct symbol *machine__find_kernel_function(struct machine *machine, u64 addr,
-					     struct map **mapp,
-					     symbol_filter_t filter)
+					     struct map **mapp)
 {
 	return machine__find_kernel_symbol(machine, MAP__FUNCTION, addr,
-					   mapp, filter);
+					   mapp);
 }
 
 static inline
 struct symbol *machine__find_kernel_function_by_name(struct machine *machine,
 						     const char *name,
-						     struct map **mapp,
-						     symbol_filter_t filter)
+						     struct map **mapp)
 {
-	return map_groups__find_function_by_name(&machine->kmaps, name, mapp,
-						 filter);
+	return map_groups__find_function_by_name(&machine->kmaps, name, mapp);
 }
 
 struct map *machine__findnew_module_map(struct machine *machine, u64 start,
@@ -215,11 +208,10 @@ struct map *machine__findnew_module_map(struct machine *machine, u64 start,
 int arch__fix_module_text_start(u64 *start, const char *name);
 
 int __machine__load_kallsyms(struct machine *machine, const char *filename,
-			     enum map_type type, bool no_kcore, symbol_filter_t filter);
+			     enum map_type type, bool no_kcore);
 int machine__load_kallsyms(struct machine *machine, const char *filename,
-			   enum map_type type, symbol_filter_t filter);
-int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
-			       symbol_filter_t filter);
+			   enum map_type type);
+int machine__load_vmlinux_path(struct machine *machine, enum map_type type);
 
 size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp,
 				     bool (skip)(struct dso *dso, int parm), int parm);

tools/perf/util/map.c

@@ -279,7 +279,7 @@ void map__fixup_end(struct map *map)
 
 #define DSO__DELETED "(deleted)"
 
-int map__load(struct map *map, symbol_filter_t filter)
+int map__load(struct map *map)
 {
 	const char *name = map->dso->long_name;
 	int nr;
@@ -287,7 +287,7 @@ int map__load(struct map *map, symbol_filter_t filter)
 	if (dso__loaded(map->dso, map->type))
 		return 0;
 
-	nr = dso__load(map->dso, map, filter);
+	nr = dso__load(map->dso, map);
 	if (nr < 0) {
 		if (map->dso->has_build_id) {
 			char sbuild_id[SBUILD_ID_SIZE];
@@ -312,9 +312,6 @@ int map__load(struct map *map, symbol_filter_t filter)
 			pr_warning("%.*s was updated (is prelink enabled?). "
 				"Restart the long running apps that use it!\n",
 				   (int)real_len, name);
-		} else if (filter) {
-			pr_warning("no symbols passed the given filter.\n");
-			return -2;	/* Empty but maybe by the filter */
 		} else {
 			pr_warning("no symbols found in %s, maybe install "
 				   "a debug package?\n", name);
@@ -331,19 +328,17 @@ int __weak arch__compare_symbol_names(const char *namea, const char *nameb)
 	return strcmp(namea, nameb);
 }
 
-struct symbol *map__find_symbol(struct map *map, u64 addr,
-				symbol_filter_t filter)
+struct symbol *map__find_symbol(struct map *map, u64 addr)
 {
-	if (map__load(map, filter) < 0)
+	if (map__load(map) < 0)
 		return NULL;
 
 	return dso__find_symbol(map->dso, map->type, addr);
 }
 
-struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
-					symbol_filter_t filter)
+struct symbol *map__find_symbol_by_name(struct map *map, const char *name)
 {
-	if (map__load(map, filter) < 0)
+	if (map__load(map) < 0)
 		return NULL;
 
 	if (!dso__sorted_by_name(map->dso, map->type))
@@ -556,23 +551,22 @@ void map_groups__put(struct map_groups *mg)
 
 struct symbol *map_groups__find_symbol(struct map_groups *mg,
 				       enum map_type type, u64 addr,
-				       struct map **mapp,
-				       symbol_filter_t filter)
+				       struct map **mapp)
 {
 	struct map *map = map_groups__find(mg, type, addr);
 
 	/* Ensure map is loaded before using map->map_ip */
-	if (map != NULL && map__load(map, filter) >= 0) {
+	if (map != NULL && map__load(map) >= 0) {
 		if (mapp != NULL)
 			*mapp = map;
-		return map__find_symbol(map, map->map_ip(map, addr), filter);
+		return map__find_symbol(map, map->map_ip(map, addr));
 	}
 
 	return NULL;
 }
 
 struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
-					 struct map **mapp, symbol_filter_t filter)
+					 struct map **mapp)
 {
 	struct symbol *sym;
 	struct rb_node *nd;
@@ -582,7 +576,7 @@ struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
 	for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
 		struct map *pos = rb_entry(nd, struct map, rb_node);
 
-		sym = map__find_symbol_by_name(pos, name, filter);
+		sym = map__find_symbol_by_name(pos, name);
 
 		if (sym == NULL)
 			continue;
@@ -600,15 +594,14 @@ struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
 					       enum map_type type,
 					       const char *name,
-					       struct map **mapp,
-					       symbol_filter_t filter)
+					       struct map **mapp)
 {
-	struct symbol *sym = maps__find_symbol_by_name(&mg->maps[type], name, mapp, filter);
+	struct symbol *sym = maps__find_symbol_by_name(&mg->maps[type], name, mapp);
 
 	return sym;
 }
 
-int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter)
+int map_groups__find_ams(struct addr_map_symbol *ams)
 {
 	if (ams->addr < ams->map->start || ams->addr >= ams->map->end) {
 		if (ams->map->groups == NULL)
@@ -620,7 +613,7 @@ int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter)
 	}
 
 	ams->al_addr = ams->map->map_ip(ams->map, ams->addr);
-	ams->sym = map__find_symbol(ams->map, ams->al_addr, filter);
+	ams->sym = map__find_symbol(ams->map, ams->al_addr);
 
 	return ams->sym ? 0 : -1;
 }

tools/perf/util/map.h

@@ -127,17 +127,14 @@ struct thread;
  * @map: the 'struct map *' in which symbols itereated
  * @sym_name: the symbol name
  * @pos: the 'struct symbol *' to use as a loop cursor
- * @filter: to use when loading the DSO
  */
-#define __map__for_each_symbol_by_name(map, sym_name, pos, filter)	\
-	for (pos = map__find_symbol_by_name(map, sym_name, filter);	\
+#define __map__for_each_symbol_by_name(map, sym_name, pos)	\
+	for (pos = map__find_symbol_by_name(map, sym_name);	\
 	     pos && arch__compare_symbol_names(pos->name, sym_name) == 0;	\
 	     pos = symbol__next_by_name(pos))
 
 #define map__for_each_symbol_by_name(map, sym_name, pos)		\
-	__map__for_each_symbol_by_name(map, sym_name, (pos), NULL)
-
-typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
+	__map__for_each_symbol_by_name(map, sym_name, (pos))
 
 int arch__compare_symbol_names(const char *namea, const char *nameb);
 void map__init(struct map *map, enum map_type type,
@@ -173,11 +170,9 @@ size_t map__fprintf_dsoname(struct map *map, FILE *fp);
 int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
 			 FILE *fp);
 
-int map__load(struct map *map, symbol_filter_t filter);
-struct symbol *map__find_symbol(struct map *map,
-				u64 addr, symbol_filter_t filter);
-struct symbol *map__find_symbol_by_name(struct map *map, const char *name,
-					symbol_filter_t filter);
+int map__load(struct map *map);
+struct symbol *map__find_symbol(struct map *map, u64 addr);
+struct symbol *map__find_symbol_by_name(struct map *map, const char *name);
 void map__fixup_start(struct map *map);
 void map__fixup_end(struct map *map);
 
@@ -191,7 +186,7 @@ struct map *maps__find(struct maps *maps, u64 addr);
 struct map *maps__first(struct maps *maps);
 struct map *map__next(struct map *map);
 struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
-                                         struct map **mapp, symbol_filter_t filter);
+                                         struct map **mapp);
 void map_groups__init(struct map_groups *mg, struct machine *machine);
 void map_groups__exit(struct map_groups *mg);
 int map_groups__clone(struct thread *thread,
@@ -231,25 +226,22 @@ static inline struct map *map_groups__next(struct map *map)
 
 struct symbol *map_groups__find_symbol(struct map_groups *mg,
 				       enum map_type type, u64 addr,
-				       struct map **mapp,
-				       symbol_filter_t filter);
+				       struct map **mapp);
 
 struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
 					       enum map_type type,
 					       const char *name,
-					       struct map **mapp,
-					       symbol_filter_t filter);
+					       struct map **mapp);
 
 struct addr_map_symbol;
 
-int map_groups__find_ams(struct addr_map_symbol *ams, symbol_filter_t filter);
+int map_groups__find_ams(struct addr_map_symbol *ams);
 
 static inline
 struct symbol *map_groups__find_function_by_name(struct map_groups *mg,
-						 const char *name, struct map **mapp,
-						 symbol_filter_t filter)
+						 const char *name, struct map **mapp)
 {
-	return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp, filter);
+	return map_groups__find_symbol_by_name(mg, MAP__FUNCTION, name, mapp);
 }
 
 int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,

tools/perf/util/probe-event.c

@@ -110,13 +110,12 @@ void exit_probe_symbol_maps(void)
 static struct symbol *__find_kernel_function_by_name(const char *name,
 						     struct map **mapp)
 {
-	return machine__find_kernel_function_by_name(host_machine, name, mapp,
-						     NULL);
+	return machine__find_kernel_function_by_name(host_machine, name, mapp);
 }
 
 static struct symbol *__find_kernel_function(u64 addr, struct map **mapp)
 {
-	return machine__find_kernel_function(host_machine, addr, mapp, NULL);
+	return machine__find_kernel_function(host_machine, addr, mapp);
 }
 
 static struct ref_reloc_sym *kernel_get_ref_reloc_sym(void)
@@ -125,7 +124,7 @@ static struct ref_reloc_sym *kernel_get_ref_reloc_sym(void)
 	struct kmap *kmap;
 	struct map *map = machine__kernel_map(host_machine);
 
-	if (map__load(map, NULL) < 0)
+	if (map__load(map) < 0)
 		return NULL;
 
 	kmap = map__kmap(map);
@@ -351,9 +350,9 @@ static int kernel_get_module_dso(const char *module, struct dso **pdso)
 	vmlinux_name = symbol_conf.vmlinux_name;
 	dso->load_errno = 0;
 	if (vmlinux_name)
-		ret = dso__load_vmlinux(dso, map, vmlinux_name, false, NULL);
+		ret = dso__load_vmlinux(dso, map, vmlinux_name, false);
 	else
-		ret = dso__load_vmlinux_path(dso, map, NULL);
+		ret = dso__load_vmlinux_path(dso, map);
 found:
 	*pdso = dso;
 	return ret;
@@ -1999,7 +1998,7 @@ static int find_perf_probe_point_from_map(struct probe_trace_point *tp,
 		map = dso__new_map(tp->module);
 		if (!map)
 			goto out;
-		sym = map__find_symbol(map, addr, NULL);
+		sym = map__find_symbol(map, addr);
 	} else {
 		if (tp->symbol && !addr) {
 			if (kernel_get_symbol_address_by_name(tp->symbol,
@@ -2704,7 +2703,7 @@ static int find_probe_functions(struct map *map, char *name,
 	struct symbol *sym;
 	struct rb_node *tmp;
 
-	if (map__load(map, NULL) < 0)
+	if (map__load(map) < 0)
 		return 0;
 
 	map__for_each_symbol(map, sym, tmp) {
@@ -3368,7 +3367,7 @@ int show_available_funcs(const char *target, struct strfilter *_filter,
 		return -EINVAL;
 	}
 
-	ret = map__load(map, NULL);
+	ret = map__load(map);
 	if (ret) {
 		if (ret == -2) {
 			char *str = strfilter__string(_filter);

tools/perf/util/symbol-elf.c

@@ -254,8 +254,7 @@ static char *demangle_sym(struct dso *dso, int kmodule, const char *elf_name)
  * And always look at the original dso, not at debuginfo packages, that
  * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
  */
-int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *map,
-				symbol_filter_t filter)
+int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *map)
 {
 	uint32_t nr_rel_entries, idx;
 	GElf_Sym sym;
@@ -351,12 +350,8 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *
 			if (!f)
 				goto out_elf_end;
 
-			if (filter && filter(map, f))
-				symbol__delete(f);
-			else {
-				symbols__insert(&dso->symbols[map->type], f);
-				++nr;
-			}
+			symbols__insert(&dso->symbols[map->type], f);
+			++nr;
 		}
 	} else if (shdr_rel_plt.sh_type == SHT_REL) {
 		GElf_Rel pos_mem, *pos;
@@ -381,12 +376,8 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *
 			if (!f)
 				goto out_elf_end;
 
-			if (filter && filter(map, f))
-				symbol__delete(f);
-			else {
-				symbols__insert(&dso->symbols[map->type], f);
-				++nr;
-			}
+			symbols__insert(&dso->symbols[map->type], f);
+			++nr;
 		}
 	}
 
@@ -825,9 +816,8 @@ static u64 ref_reloc(struct kmap *kmap)
 void __weak arch__sym_update(struct symbol *s __maybe_unused,
 		GElf_Sym *sym __maybe_unused) { }
 
-int dso__load_sym(struct dso *dso, struct map *map,
-		  struct symsrc *syms_ss, struct symsrc *runtime_ss,
-		  symbol_filter_t filter, int kmodule)
+int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
+		  struct symsrc *runtime_ss, int kmodule)
 {
 	struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL;
 	struct map_groups *kmaps = kmap ? map__kmaps(map) : NULL;
@@ -1124,12 +1114,8 @@ int dso__load_sym(struct dso *dso, struct map *map,
 
 		arch__sym_update(f, &sym);
 
-		if (filter && filter(curr_map, f))
-			symbol__delete(f);
-		else {
-			__symbols__insert(&curr_dso->symbols[curr_map->type], f, dso->kernel);
-			nr++;
-		}
+		__symbols__insert(&curr_dso->symbols[curr_map->type], f, dso->kernel);
+		nr++;
 	}
 
 	/*

tools/perf/util/symbol-minimal.c

@@ -287,8 +287,7 @@ void symsrc__destroy(struct symsrc *ss)
 
 int dso__synthesize_plt_symbols(struct dso *dso __maybe_unused,
 				struct symsrc *ss __maybe_unused,
-				struct map *map __maybe_unused,
-				symbol_filter_t filter __maybe_unused)
+				struct map *map __maybe_unused)
 {
 	return 0;
 }
@@ -334,7 +333,6 @@ enum dso_type dso__type_fd(int fd)
 int dso__load_sym(struct dso *dso, struct map *map __maybe_unused,
 		  struct symsrc *ss,
 		  struct symsrc *runtime_ss __maybe_unused,
-		  symbol_filter_t filter __maybe_unused,
 		  int kmodule __maybe_unused)
 {
 	unsigned char build_id[BUILD_ID_SIZE];

tools/perf/util/symbol.c

@@ -24,10 +24,8 @@
 #include <symbol/kallsyms.h>
 #include <sys/utsname.h>
 
-static int dso__load_kernel_sym(struct dso *dso, struct map *map,
-				symbol_filter_t filter);
-static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map,
-			symbol_filter_t filter);
+static int dso__load_kernel_sym(struct dso *dso, struct map *map);
+static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map);
 static bool symbol__is_idle(const char *name);
 
 int vmlinux_path__nr_entries;
@@ -630,8 +628,7 @@ static int dso__load_all_kallsyms(struct dso *dso, const char *filename,
 	return kallsyms__parse(filename, &args, map__process_kallsym_symbol);
 }
 
-static int dso__split_kallsyms_for_kcore(struct dso *dso, struct map *map,
-					 symbol_filter_t filter)
+static int dso__split_kallsyms_for_kcore(struct dso *dso, struct map *map)
 {
 	struct map_groups *kmaps = map__kmaps(map);
 	struct map *curr_map;
@@ -660,7 +657,7 @@ static int dso__split_kallsyms_for_kcore(struct dso *dso, struct map *map,
 
 		curr_map = map_groups__find(kmaps, map->type, pos->start);
 
-		if (!curr_map || (filter && filter(curr_map, pos))) {
+		if (!curr_map) {
 			symbol__delete(pos);
 			continue;
 		}
@@ -683,8 +680,7 @@ static int dso__split_kallsyms_for_kcore(struct dso *dso, struct map *map,
  * kernel range is broken in several maps, named [kernel].N, as we don't have
  * the original ELF section names vmlinux have.
  */
-static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta,
-			       symbol_filter_t filter)
+static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta)
 {
 	struct map_groups *kmaps = map__kmaps(map);
 	struct machine *machine;
@@ -761,7 +757,7 @@ static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta,
 
 			if (count == 0) {
 				curr_map = map;
-				goto filter_symbol;
+				goto add_symbol;
 			}
 
 			if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
@@ -793,18 +789,18 @@ static int dso__split_kallsyms(struct dso *dso, struct map *map, u64 delta,
 			pos->start -= delta;
 			pos->end -= delta;
 		}
-filter_symbol:
-		if (filter && filter(curr_map, pos)) {
-discard_symbol:		rb_erase(&pos->rb_node, root);
-			symbol__delete(pos);
-		} else {
-			if (curr_map != map) {
-				rb_erase(&pos->rb_node, root);
-				symbols__insert(&curr_map->dso->symbols[curr_map->type], pos);
-				++moved;
-			} else
-				++count;
-		}
+add_symbol:
+		if (curr_map != map) {
+			rb_erase(&pos->rb_node, root);
+			symbols__insert(&curr_map->dso->symbols[curr_map->type], pos);
+			++moved;
+		} else
+			++count;
+
+		continue;
+discard_symbol:
+		rb_erase(&pos->rb_node, root);
+		symbol__delete(pos);
 	}
 
 	if (curr_map != map &&
@@ -1244,7 +1240,7 @@ static int kallsyms__delta(struct map *map, const char *filename, u64 *delta)
 }
 
 int __dso__load_kallsyms(struct dso *dso, const char *filename,
-			 struct map *map, bool no_kcore, symbol_filter_t filter)
+			 struct map *map, bool no_kcore)
 {
 	u64 delta = 0;
 
@@ -1266,19 +1262,18 @@ int __dso__load_kallsyms(struct dso *dso, const char *filename,
 		dso->symtab_type = DSO_BINARY_TYPE__KALLSYMS;
 
 	if (!no_kcore && !dso__load_kcore(dso, map, filename))
-		return dso__split_kallsyms_for_kcore(dso, map, filter);
+		return dso__split_kallsyms_for_kcore(dso, map);
 	else
-		return dso__split_kallsyms(dso, map, delta, filter);
+		return dso__split_kallsyms(dso, map, delta);
 }
 
 int dso__load_kallsyms(struct dso *dso, const char *filename,
-		       struct map *map, symbol_filter_t filter)
+		       struct map *map)
 {
-	return __dso__load_kallsyms(dso, filename, map, false, filter);
+	return __dso__load_kallsyms(dso, filename, map, false);
 }
 
-static int dso__load_perf_map(struct dso *dso, struct map *map,
-			      symbol_filter_t filter)
+static int dso__load_perf_map(struct dso *dso, struct map *map)
 {
 	char *line = NULL;
 	size_t n;
@@ -1320,12 +1315,8 @@ static int dso__load_perf_map(struct dso *dso, struct map *map,
 		if (sym == NULL)
 			goto out_delete_line;
 
-		if (filter && filter(map, sym))
-			symbol__delete(sym);
-		else {
-			symbols__insert(&dso->symbols[map->type], sym);
-			nr_syms++;
-		}
+		symbols__insert(&dso->symbols[map->type], sym);
+		nr_syms++;
 	}
 
 	free(line);
@@ -1381,7 +1372,7 @@ static bool dso__is_compatible_symtab_type(struct dso *dso, bool kmod,
 	}
 }
 
-int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
+int dso__load(struct dso *dso, struct map *map)
 {
 	char *name;
 	int ret = -1;
@@ -1404,9 +1395,9 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
 
 	if (dso->kernel) {
 		if (dso->kernel == DSO_TYPE_KERNEL)
-			ret = dso__load_kernel_sym(dso, map, filter);
+			ret = dso__load_kernel_sym(dso, map);
 		else if (dso->kernel == DSO_TYPE_GUEST_KERNEL)
-			ret = dso__load_guest_kernel_sym(dso, map, filter);
+			ret = dso__load_guest_kernel_sym(dso, map);
 
 		goto out;
 	}
@@ -1430,7 +1421,7 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
 			goto out;
 		}
 
-		ret = dso__load_perf_map(dso, map, filter);
+		ret = dso__load_perf_map(dso, map);
 		dso->symtab_type = ret > 0 ? DSO_BINARY_TYPE__JAVA_JIT :
 					     DSO_BINARY_TYPE__NOT_FOUND;
 		goto out;
@@ -1521,14 +1512,14 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
 			kmod = true;
 
 	if (syms_ss)
-		ret = dso__load_sym(dso, map, syms_ss, runtime_ss, filter, kmod);
+		ret = dso__load_sym(dso, map, syms_ss, runtime_ss, kmod);
 	else
 		ret = -1;
 
 	if (ret > 0) {
 		int nr_plt;
 
-		nr_plt = dso__synthesize_plt_symbols(dso, runtime_ss, map, filter);
+		nr_plt = dso__synthesize_plt_symbols(dso, runtime_ss, map);
 		if (nr_plt > 0)
 			ret += nr_plt;
 	}
@@ -1567,8 +1558,7 @@ struct map *map_groups__find_by_name(struct map_groups *mg,
 }
 
 int dso__load_vmlinux(struct dso *dso, struct map *map,
-		      const char *vmlinux, bool vmlinux_allocated,
-		      symbol_filter_t filter)
+		      const char *vmlinux, bool vmlinux_allocated)
 {
 	int err = -1;
 	struct symsrc ss;
@@ -1588,7 +1578,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map,
 	if (symsrc__init(&ss, dso, symfs_vmlinux, symtab_type))
 		return -1;
 
-	err = dso__load_sym(dso, map, &ss, &ss, filter, 0);
+	err = dso__load_sym(dso, map, &ss, &ss, 0);
 	symsrc__destroy(&ss);
 
 	if (err > 0) {
@@ -1604,8 +1594,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map,
 	return err;
 }
 
-int dso__load_vmlinux_path(struct dso *dso, struct map *map,
-			   symbol_filter_t filter)
+int dso__load_vmlinux_path(struct dso *dso, struct map *map)
 {
 	int i, err = 0;
 	char *filename = NULL;
@@ -1614,7 +1603,7 @@ int dso__load_vmlinux_path(struct dso *dso, struct map *map,
 		 vmlinux_path__nr_entries + 1);
 
 	for (i = 0; i < vmlinux_path__nr_entries; ++i) {
-		err = dso__load_vmlinux(dso, map, vmlinux_path[i], false, filter);
+		err = dso__load_vmlinux(dso, map, vmlinux_path[i], false);
 		if (err > 0)
 			goto out;
 	}
@@ -1622,7 +1611,7 @@ int dso__load_vmlinux_path(struct dso *dso, struct map *map,
 	if (!symbol_conf.ignore_vmlinux_buildid)
 		filename = dso__build_id_filename(dso, NULL, 0);
 	if (filename != NULL) {
-		err = dso__load_vmlinux(dso, map, filename, true, filter);
+		err = dso__load_vmlinux(dso, map, filename, true);
 		if (err > 0)
 			goto out;
 		free(filename);
@@ -1736,8 +1725,7 @@ static char *dso__find_kallsyms(struct dso *dso, struct map *map)
 	return strdup(path);
 }
 
-static int dso__load_kernel_sym(struct dso *dso, struct map *map,
-				symbol_filter_t filter)
+static int dso__load_kernel_sym(struct dso *dso, struct map *map)
 {
 	int err;
 	const char *kallsyms_filename = NULL;
@@ -1763,12 +1751,11 @@ static int dso__load_kernel_sym(struct dso *dso, struct map *map,
 	}
 
 	if (!symbol_conf.ignore_vmlinux && symbol_conf.vmlinux_name != NULL) {
-		return dso__load_vmlinux(dso, map, symbol_conf.vmlinux_name,
-					 false, filter);
+		return dso__load_vmlinux(dso, map, symbol_conf.vmlinux_name, false);
 	}
 
 	if (!symbol_conf.ignore_vmlinux && vmlinux_path != NULL) {
-		err = dso__load_vmlinux_path(dso, map, filter);
+		err = dso__load_vmlinux_path(dso, map);
 		if (err > 0)
 			return err;
 	}
@@ -1784,7 +1771,7 @@ static int dso__load_kernel_sym(struct dso *dso, struct map *map,
 	kallsyms_filename = kallsyms_allocated_filename;
 
 do_kallsyms:
-	err = dso__load_kallsyms(dso, kallsyms_filename, map, filter);
+	err = dso__load_kallsyms(dso, kallsyms_filename, map);
 	if (err > 0)
 		pr_debug("Using %s for symbols\n", kallsyms_filename);
 	free(kallsyms_allocated_filename);
@@ -1799,8 +1786,7 @@ static int dso__load_kernel_sym(struct dso *dso, struct map *map,
 	return err;
 }
 
-static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map,
-				      symbol_filter_t filter)
+static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map)
 {
 	int err;
 	const char *kallsyms_filename = NULL;
@@ -1822,7 +1808,7 @@ static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map,
 		if (symbol_conf.default_guest_vmlinux_name != NULL) {
 			err = dso__load_vmlinux(dso, map,
 						symbol_conf.default_guest_vmlinux_name,
-						false, filter);
+						false);
 			return err;
 		}
 
@@ -1834,7 +1820,7 @@ static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map,
 		kallsyms_filename = path;
 	}
 
-	err = dso__load_kallsyms(dso, kallsyms_filename, map, filter);
+	err = dso__load_kallsyms(dso, kallsyms_filename, map);
 	if (err > 0)
 		pr_debug("Using %s for symbols\n", kallsyms_filename);
 	if (err > 0 && !dso__is_kcore(dso)) {

tools/perf/util/symbol.h

@@ -241,16 +241,13 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
 bool symsrc__has_symtab(struct symsrc *ss);
 bool symsrc__possibly_runtime(struct symsrc *ss);
 
-int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter);
+int dso__load(struct dso *dso, struct map *map);
 int dso__load_vmlinux(struct dso *dso, struct map *map,
-		      const char *vmlinux, bool vmlinux_allocated,
-		      symbol_filter_t filter);
-int dso__load_vmlinux_path(struct dso *dso, struct map *map,
-			   symbol_filter_t filter);
+		      const char *vmlinux, bool vmlinux_allocated);
+int dso__load_vmlinux_path(struct dso *dso, struct map *map);
 int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
-			 bool no_kcore, symbol_filter_t filter);
-int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
-		       symbol_filter_t filter);
+			 bool no_kcore);
+int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
 
 void dso__insert_symbol(struct dso *dso, enum map_type type,
 			struct symbol *sym);
@@ -298,10 +295,9 @@ int symbol__config_symfs(const struct option *opt __maybe_unused,
 			 const char *dir, int unset __maybe_unused);
 
 int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
-		  struct symsrc *runtime_ss, symbol_filter_t filter,
-		  int kmodule);
+		  struct symsrc *runtime_ss, int kmodule);
 int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
-				struct map *map, symbol_filter_t filter);
+				struct map *map);
 
 void __symbols__insert(struct rb_root *symbols, struct symbol *sym, bool kernel);
 void symbols__insert(struct rb_root *symbols, struct symbol *sym);