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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/tools/perf/util/bpf-loader.c
..
..
@@ -12,33 +12,28 @@
12
12
 #include <linux/err.h>
13
13
 #include <linux/kernel.h>
14
14
 #include <linux/string.h>
15
+#include <linux/zalloc.h>
15
16
 #include <errno.h>
16
-#include "perf.h"
17
+#include <stdlib.h>
17
18
 #include "debug.h"
19
+#include "evlist.h"
18
20
 #include "bpf-loader.h"
19
21
 #include "bpf-prologue.h"
20
22
 #include "probe-event.h"
21
23
 #include "probe-finder.h" // for MAX_PROBES
22
24
 #include "parse-events.h"
23
25
 #include "strfilter.h"
26
+#include "util.h"
24
27
 #include "llvm-utils.h"
25
28
 #include "c++/clang-c.h"
26
29
 
27
-#define DEFINE_PRINT_FN(name, level) \
28
-static int libbpf_##name(const char *fmt, ...)	\
29
-{						\
30
-	va_list args;				\
31
-	int ret;				\
32
-						\
33
-	va_start(args, fmt);			\
34
-	ret = veprintf(level, verbose, pr_fmt(fmt), args);\
35
-	va_end(args);				\
36
-	return ret;				\
37
-}
30
+#include <internal/xyarray.h>
38
31
 
39
-DEFINE_PRINT_FN(warning, 1)
40
-DEFINE_PRINT_FN(info, 1)
41
-DEFINE_PRINT_FN(debug, 1)
32
+static int libbpf_perf_print(enum libbpf_print_level level __attribute__((unused)),
33
+			      const char *fmt, va_list args)
34
+{
35
+	return veprintf(1, verbose, pr_fmt(fmt), args);
36
+}
42
37
 
43
38
 struct bpf_prog_priv {
44
39
 	bool is_tp;
..
..
@@ -59,9 +54,7 @@
59
54
 	struct bpf_object *obj;
60
55
 
61
56
 	if (!libbpf_initialized) {
62
-		libbpf_set_print(libbpf_warning,
63
-				 libbpf_info,
64
-				 libbpf_debug);
57
+		libbpf_set_print(libbpf_perf_print);
65
58
 		libbpf_initialized = true;
66
59
 	}
67
60
 
..
..
@@ -79,9 +72,7 @@
79
72
 	struct bpf_object *obj;
80
73
 
81
74
 	if (!libbpf_initialized) {
82
-		libbpf_set_print(libbpf_warning,
83
-				 libbpf_info,
84
-				 libbpf_debug);
75
+		libbpf_set_print(libbpf_perf_print);
85
76
 		libbpf_initialized = true;
86
77
 	}
87
78
 
..
..
@@ -99,7 +90,7 @@
99
90
 			if (err)
100
91
 				return ERR_PTR(-BPF_LOADER_ERRNO__COMPILE);
101
92
 		} else
102
-			pr_debug("bpf: successfull builtin compilation\n");
93
+			pr_debug("bpf: successful builtin compilation\n");
103
94
 		obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, filename);
104
95
 
105
96
 		if (!IS_ERR_OR_NULL(obj) && llvm_param.dump_obj)
..
..
@@ -337,12 +328,6 @@
337
328
 	probe_conf.no_inlines = false;
338
329
 	probe_conf.force_add = false;
339
330
 
340
-	config_str = bpf_program__title(prog, false);
341
-	if (IS_ERR(config_str)) {
342
-		pr_debug("bpf: unable to get title for program\n");
343
-		return PTR_ERR(config_str);
344
-	}
345
-
346
331
 	priv = calloc(sizeof(*priv), 1);
347
332
 	if (!priv) {
348
333
 		pr_debug("bpf: failed to alloc priv\n");
..
..
@@ -350,6 +335,7 @@
350
335
 	}
351
336
 	pev = &priv->pev;
352
337
 
338
+	config_str = bpf_program__section_name(prog);
353
339
 	pr_debug("bpf: config program '%s'\n", config_str);
354
340
 	err = parse_prog_config(config_str, &main_str, &is_tp, pev);
355
341
 	if (err)
..
..
@@ -463,10 +449,7 @@
463
449
 	if (err) {
464
450
 		const char *title;
465
451
 
466
-		title = bpf_program__title(prog, false);
467
-		if (!title)
468
-			title = "[unknown]";
469
-
452
+		title = bpf_program__section_name(prog);
470
453
 		pr_debug("Failed to generate prologue for program %s\n",
471
454
 			 title);
472
455
 		return err;
..
..
@@ -775,7 +758,7 @@
775
758
 
776
759
 		if (priv->is_tp) {
777
760
 			fd = bpf_program__fd(prog);
778
-			err = (*func)(priv->sys_name, priv->evt_name, fd, arg);
761
+			err = (*func)(priv->sys_name, priv->evt_name, fd, obj, arg);
779
762
 			if (err) {
780
763
 				pr_debug("bpf: tracepoint call back failed, stop iterate\n");
781
764
 				return err;
..
..
@@ -800,7 +783,7 @@
800
783
 				return fd;
801
784
 			}
802
785
 
803
-			err = (*func)(tev->group, tev->event, fd, arg);
786
+			err = (*func)(tev->group, tev->event, fd, obj, arg);
804
787
 			if (err) {
805
788
 				pr_debug("bpf: call back failed, stop iterate\n");
806
789
 				return err;
..
..
@@ -829,7 +812,7 @@
829
812
 	} k;
830
813
 	union {
831
814
 		u64 value;
832
-		struct perf_evsel *evsel;
815
+		struct evsel *evsel;
833
816
 	} v;
834
817
 };
835
818
 
..
..
@@ -841,7 +824,7 @@
841
824
 bpf_map_op__delete(struct bpf_map_op *op)
842
825
 {
843
826
 	if (!list_empty(&op->list))
844
-		list_del(&op->list);
827
+		list_del_init(&op->list);
845
828
 	if (op->key_type == BPF_MAP_KEY_RANGES)
846
829
 		parse_events__clear_array(&op->k.array);
847
830
 	free(op);
..
..
@@ -1055,7 +1038,7 @@
1055
1038
 static int
1056
1039
 bpf_map__config_value(struct bpf_map *map,
1057
1040
 		      struct parse_events_term *term,
1058
-		      struct perf_evlist *evlist __maybe_unused)
1041
+		      struct evlist *evlist __maybe_unused)
1059
1042
 {
1060
1043
 	if (!term->err_val) {
1061
1044
 		pr_debug("Config value not set\n");
..
..
@@ -1073,9 +1056,9 @@
1073
1056
 static int
1074
1057
 __bpf_map__config_event(struct bpf_map *map,
1075
1058
 			struct parse_events_term *term,
1076
-			struct perf_evlist *evlist)
1059
+			struct evlist *evlist)
1077
1060
 {
1078
-	struct perf_evsel *evsel;
1061
+	struct evsel *evsel;
1079
1062
 	const struct bpf_map_def *def;
1080
1063
 	struct bpf_map_op *op;
1081
1064
 	const char *map_name = bpf_map__name(map);
..
..
@@ -1115,7 +1098,7 @@
1115
1098
 static int
1116
1099
 bpf_map__config_event(struct bpf_map *map,
1117
1100
 		      struct parse_events_term *term,
1118
-		      struct perf_evlist *evlist)
1101
+		      struct evlist *evlist)
1119
1102
 {
1120
1103
 	if (!term->err_val) {
1121
1104
 		pr_debug("Config value not set\n");
..
..
@@ -1133,7 +1116,7 @@
1133
1116
 struct bpf_obj_config__map_func {
1134
1117
 	const char *config_opt;
1135
1118
 	int (*config_func)(struct bpf_map *, struct parse_events_term *,
1136
-			   struct perf_evlist *);
1119
+			   struct evlist *);
1137
1120
 };
1138
1121
 
1139
1122
 struct bpf_obj_config__map_func bpf_obj_config__map_funcs[] = {
..
..
@@ -1181,7 +1164,7 @@
1181
1164
 static int
1182
1165
 bpf__obj_config_map(struct bpf_object *obj,
1183
1166
 		    struct parse_events_term *term,
1184
-		    struct perf_evlist *evlist,
1167
+		    struct evlist *evlist,
1185
1168
 		    int *key_scan_pos)
1186
1169
 {
1187
1170
 	/* key is "map:<mapname>.<config opt>" */
..
..
@@ -1232,15 +1215,16 @@
1232
1215
 	pr_debug("ERROR: Invalid map config option '%s'\n", map_opt);
1233
1216
 	err = -BPF_LOADER_ERRNO__OBJCONF_MAP_OPT;
1234
1217
 out:
1235
-	free(map_name);
1236
1218
 	if (!err)
1237
-		key_scan_pos += strlen(map_opt);
1219
+		*key_scan_pos += strlen(map_opt);
1220
+
1221
+	free(map_name);
1238
1222
 	return err;
1239
1223
 }
1240
1224
 
1241
1225
 int bpf__config_obj(struct bpf_object *obj,
1242
1226
 		    struct parse_events_term *term,
1243
-		    struct perf_evlist *evlist,
1227
+		    struct evlist *evlist,
1244
1228
 		    int *error_pos)
1245
1229
 {
1246
1230
 	int key_scan_pos = 0;
..
..
@@ -1413,9 +1397,9 @@
1413
1397
 
1414
1398
 static int
1415
1399
 apply_config_evsel_for_key(const char *name, int map_fd, void *pkey,
1416
-			   struct perf_evsel *evsel)
1400
+			   struct evsel *evsel)
1417
1401
 {
1418
-	struct xyarray *xy = evsel->fd;
1402
+	struct xyarray *xy = evsel->core.fd;
1419
1403
 	struct perf_event_attr *attr;
1420
1404
 	unsigned int key, events;
1421
1405
 	bool check_pass = false;
..
..
@@ -1433,13 +1417,13 @@
1433
1417
 		return -BPF_LOADER_ERRNO__OBJCONF_MAP_EVTDIM;
1434
1418
 	}
1435
1419
 
1436
-	attr = &evsel->attr;
1420
+	attr = &evsel->core.attr;
1437
1421
 	if (attr->inherit) {
1438
1422
 		pr_debug("ERROR: Can't put inherit event into map %s\n", name);
1439
1423
 		return -BPF_LOADER_ERRNO__OBJCONF_MAP_EVTINH;
1440
1424
 	}
1441
1425
 
1442
-	if (perf_evsel__is_bpf_output(evsel))
1426
+	if (evsel__is_bpf_output(evsel))
1443
1427
 		check_pass = true;
1444
1428
 	if (attr->type == PERF_TYPE_RAW)
1445
1429
 		check_pass = true;
..
..
@@ -1503,7 +1487,7 @@
1503
1487
 	struct bpf_map *map;
1504
1488
 	int err;
1505
1489
 
1506
-	bpf_map__for_each(map, obj) {
1490
+	bpf_object__for_each_map(map, obj) {
1507
1491
 		err = apply_obj_config_map(map);
1508
1492
 		if (err)
1509
1493
 			return err;
..
..
@@ -1527,7 +1511,7 @@
1527
1511
 
1528
1512
 #define bpf__for_each_map(pos, obj, objtmp)	\
1529
1513
 	bpf_object__for_each_safe(obj, objtmp)	\
1530
-		bpf_map__for_each(pos, obj)
1514
+		bpf_object__for_each_map(pos, obj)
1531
1515
 
1532
1516
 #define bpf__for_each_map_named(pos, obj, objtmp, name)	\
1533
1517
 	bpf__for_each_map(pos, obj, objtmp) 		\
..
..
@@ -1535,11 +1519,11 @@
1535
1519
 			(strcmp(name, 			\
1536
1520
 				bpf_map__name(pos)) == 0))
1537
1521
 
1538
-struct perf_evsel *bpf__setup_output_event(struct perf_evlist *evlist, const char *name)
1522
+struct evsel *bpf__setup_output_event(struct evlist *evlist, const char *name)
1539
1523
 {
1540
1524
 	struct bpf_map_priv *tmpl_priv = NULL;
1541
1525
 	struct bpf_object *obj, *tmp;
1542
-	struct perf_evsel *evsel = NULL;
1526
+	struct evsel *evsel = NULL;
1543
1527
 	struct bpf_map *map;
1544
1528
 	int err;
1545
1529
 	bool need_init = false;
..
..
@@ -1577,7 +1561,7 @@
1577
1561
 			return ERR_PTR(-err);
1578
1562
 		}
1579
1563
 
1580
-		evsel = perf_evlist__last(evlist);
1564
+		evsel = evlist__last(evlist);
1581
1565
 	}
1582
1566
 
1583
1567
 	bpf__for_each_map_named(map, obj, tmp, name) {
..
..
@@ -1603,7 +1587,7 @@
1603
1587
 
1604
1588
 			op = bpf_map__add_newop(map, NULL);
1605
1589
 			if (IS_ERR(op))
1606
-				return ERR_PTR(PTR_ERR(op));
1590
+				return ERR_CAST(op);
1607
1591
 			op->op_type = BPF_MAP_OP_SET_EVSEL;
1608
1592
 			op->v.evsel = evsel;
1609
1593
 		}
..
..
@@ -1612,10 +1596,10 @@
1612
1596
 	return evsel;
1613
1597
 }
1614
1598
 
1615
-int bpf__setup_stdout(struct perf_evlist *evlist)
1599
+int bpf__setup_stdout(struct evlist *evlist)
1616
1600
 {
1617
-	struct perf_evsel *evsel = bpf__setup_output_event(evlist, "__bpf_stdout__");
1618
-	return IS_ERR(evsel) ? PTR_ERR(evsel) : 0;
1601
+	struct evsel *evsel = bpf__setup_output_event(evlist, "__bpf_stdout__");
1602
+	return PTR_ERR_OR_ZERO(evsel);
1619
1603
 }
1620
1604
 
1621
1605
 #define ERRNO_OFFSET(e)		((e) - __BPF_LOADER_ERRNO__START)
..
..
@@ -1768,7 +1752,7 @@
1768
1752
 
1769
1753
 int bpf__strerror_config_obj(struct bpf_object *obj __maybe_unused,
1770
1754
 			     struct parse_events_term *term __maybe_unused,
1771
-			     struct perf_evlist *evlist __maybe_unused,
1755
+			     struct evlist *evlist __maybe_unused,
1772
1756
 			     int *error_pos __maybe_unused, int err,
1773
1757
 			     char *buf, size_t size)
1774
1758
 {
..
..
@@ -1792,7 +1776,7 @@
1792
1776
 	return 0;
1793
1777
 }
1794
1778
 
1795
-int bpf__strerror_setup_output_event(struct perf_evlist *evlist __maybe_unused,
1779
+int bpf__strerror_setup_output_event(struct evlist *evlist __maybe_unused,
1796
1780
 				     int err, char *buf, size_t size)
1797
1781
 {
1798
1782
 	bpf__strerror_head(err, buf, size);