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-rw-r--r--tools/perf/util/bpf-loader.c724
1 files changed, 721 insertions, 3 deletions
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index 540a7efa657e..0967ce601931 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -7,6 +7,7 @@
7 7
8#include <linux/bpf.h> 8#include <linux/bpf.h>
9#include <bpf/libbpf.h> 9#include <bpf/libbpf.h>
10#include <bpf/bpf.h>
10#include <linux/err.h> 11#include <linux/err.h>
11#include <linux/string.h> 12#include <linux/string.h>
12#include "perf.h" 13#include "perf.h"
@@ -16,6 +17,7 @@
16#include "llvm-utils.h" 17#include "llvm-utils.h"
17#include "probe-event.h" 18#include "probe-event.h"
18#include "probe-finder.h" // for MAX_PROBES 19#include "probe-finder.h" // for MAX_PROBES
20#include "parse-events.h"
19#include "llvm-utils.h" 21#include "llvm-utils.h"
20 22
21#define DEFINE_PRINT_FN(name, level) \ 23#define DEFINE_PRINT_FN(name, level) \
@@ -108,8 +110,8 @@ void bpf__clear(void)
108} 110}
109 111
110static void 112static void
111bpf_prog_priv__clear(struct bpf_program *prog __maybe_unused, 113clear_prog_priv(struct bpf_program *prog __maybe_unused,
112 void *_priv) 114 void *_priv)
113{ 115{
114 struct bpf_prog_priv *priv = _priv; 116 struct bpf_prog_priv *priv = _priv;
115 117
@@ -337,7 +339,7 @@ config_bpf_program(struct bpf_program *prog)
337 } 339 }
338 pr_debug("bpf: config '%s' is ok\n", config_str); 340 pr_debug("bpf: config '%s' is ok\n", config_str);
339 341
340 err = bpf_program__set_private(prog, priv, bpf_prog_priv__clear); 342 err = bpf_program__set_private(prog, priv, clear_prog_priv);
341 if (err) { 343 if (err) {
342 pr_debug("Failed to set priv for program '%s'\n", config_str); 344 pr_debug("Failed to set priv for program '%s'\n", config_str);
343 goto errout; 345 goto errout;
@@ -739,6 +741,682 @@ int bpf__foreach_tev(struct bpf_object *obj,
739 return 0; 741 return 0;
740} 742}
741 743
744enum bpf_map_op_type {
745 BPF_MAP_OP_SET_VALUE,
746 BPF_MAP_OP_SET_EVSEL,
747};
748
749enum bpf_map_key_type {
750 BPF_MAP_KEY_ALL,
751 BPF_MAP_KEY_RANGES,
752};
753
754struct bpf_map_op {
755 struct list_head list;
756 enum bpf_map_op_type op_type;
757 enum bpf_map_key_type key_type;
758 union {
759 struct parse_events_array array;
760 } k;
761 union {
762 u64 value;
763 struct perf_evsel *evsel;
764 } v;
765};
766
767struct bpf_map_priv {
768 struct list_head ops_list;
769};
770
771static void
772bpf_map_op__delete(struct bpf_map_op *op)
773{
774 if (!list_empty(&op->list))
775 list_del(&op->list);
776 if (op->key_type == BPF_MAP_KEY_RANGES)
777 parse_events__clear_array(&op->k.array);
778 free(op);
779}
780
781static void
782bpf_map_priv__purge(struct bpf_map_priv *priv)
783{
784 struct bpf_map_op *pos, *n;
785
786 list_for_each_entry_safe(pos, n, &priv->ops_list, list) {
787 list_del_init(&pos->list);
788 bpf_map_op__delete(pos);
789 }
790}
791
792static void
793bpf_map_priv__clear(struct bpf_map *map __maybe_unused,
794 void *_priv)
795{
796 struct bpf_map_priv *priv = _priv;
797
798 bpf_map_priv__purge(priv);
799 free(priv);
800}
801
802static int
803bpf_map_op_setkey(struct bpf_map_op *op, struct parse_events_term *term)
804{
805 op->key_type = BPF_MAP_KEY_ALL;
806 if (!term)
807 return 0;
808
809 if (term->array.nr_ranges) {
810 size_t memsz = term->array.nr_ranges *
811 sizeof(op->k.array.ranges[0]);
812
813 op->k.array.ranges = memdup(term->array.ranges, memsz);
814 if (!op->k.array.ranges) {
815 pr_debug("No enough memory to alloc indices for map\n");
816 return -ENOMEM;
817 }
818 op->key_type = BPF_MAP_KEY_RANGES;
819 op->k.array.nr_ranges = term->array.nr_ranges;
820 }
821 return 0;
822}
823
824static struct bpf_map_op *
825bpf_map_op__new(struct parse_events_term *term)
826{
827 struct bpf_map_op *op;
828 int err;
829
830 op = zalloc(sizeof(*op));
831 if (!op) {
832 pr_debug("Failed to alloc bpf_map_op\n");
833 return ERR_PTR(-ENOMEM);
834 }
835 INIT_LIST_HEAD(&op->list);
836
837 err = bpf_map_op_setkey(op, term);
838 if (err) {
839 free(op);
840 return ERR_PTR(err);
841 }
842 return op;
843}
844
845static int
846bpf_map__add_op(struct bpf_map *map, struct bpf_map_op *op)
847{
848 struct bpf_map_priv *priv;
849 const char *map_name;
850 int err;
851
852 map_name = bpf_map__get_name(map);
853 err = bpf_map__get_private(map, (void **)&priv);
854 if (err) {
855 pr_debug("Failed to get private from map %s\n", map_name);
856 return err;
857 }
858
859 if (!priv) {
860 priv = zalloc(sizeof(*priv));
861 if (!priv) {
862 pr_debug("No enough memory to alloc map private\n");
863 return -ENOMEM;
864 }
865 INIT_LIST_HEAD(&priv->ops_list);
866
867 if (bpf_map__set_private(map, priv, bpf_map_priv__clear)) {
868 free(priv);
869 return -BPF_LOADER_ERRNO__INTERNAL;
870 }
871 }
872
873 list_add_tail(&op->list, &priv->ops_list);
874 return 0;
875}
876
877static struct bpf_map_op *
878bpf_map__add_newop(struct bpf_map *map, struct parse_events_term *term)
879{
880 struct bpf_map_op *op;
881 int err;
882
883 op = bpf_map_op__new(term);
884 if (IS_ERR(op))
885 return op;
886
887 err = bpf_map__add_op(map, op);
888 if (err) {
889 bpf_map_op__delete(op);
890 return ERR_PTR(err);
891 }
892 return op;
893}
894
895static int
896__bpf_map__config_value(struct bpf_map *map,
897 struct parse_events_term *term)
898{
899 struct bpf_map_def def;
900 struct bpf_map_op *op;
901 const char *map_name;
902 int err;
903
904 map_name = bpf_map__get_name(map);
905
906 err = bpf_map__get_def(map, &def);
907 if (err) {
908 pr_debug("Unable to get map definition from '%s'\n",
909 map_name);
910 return -BPF_LOADER_ERRNO__INTERNAL;
911 }
912
913 if (def.type != BPF_MAP_TYPE_ARRAY) {
914 pr_debug("Map %s type is not BPF_MAP_TYPE_ARRAY\n",
915 map_name);
916 return -BPF_LOADER_ERRNO__OBJCONF_MAP_TYPE;
917 }
918 if (def.key_size < sizeof(unsigned int)) {
919 pr_debug("Map %s has incorrect key size\n", map_name);
920 return -BPF_LOADER_ERRNO__OBJCONF_MAP_KEYSIZE;
921 }
922 switch (def.value_size) {
923 case 1:
924 case 2:
925 case 4:
926 case 8:
927 break;
928 default:
929 pr_debug("Map %s has incorrect value size\n", map_name);
930 return -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUESIZE;
931 }
932
933 op = bpf_map__add_newop(map, term);
934 if (IS_ERR(op))
935 return PTR_ERR(op);
936 op->op_type = BPF_MAP_OP_SET_VALUE;
937 op->v.value = term->val.num;
938 return 0;
939}
940
941static int
942bpf_map__config_value(struct bpf_map *map,
943 struct parse_events_term *term,
944 struct perf_evlist *evlist __maybe_unused)
945{
946 if (!term->err_val) {
947 pr_debug("Config value not set\n");
948 return -BPF_LOADER_ERRNO__OBJCONF_CONF;
949 }
950
951 if (term->type_val != PARSE_EVENTS__TERM_TYPE_NUM) {
952 pr_debug("ERROR: wrong value type for 'value'\n");
953 return -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE;
954 }
955
956 return __bpf_map__config_value(map, term);
957}
958
959static int
960__bpf_map__config_event(struct bpf_map *map,
961 struct parse_events_term *term,
962 struct perf_evlist *evlist)
963{
964 struct perf_evsel *evsel;
965 struct bpf_map_def def;
966 struct bpf_map_op *op;
967 const char *map_name;
968 int err;
969
970 map_name = bpf_map__get_name(map);
971 evsel = perf_evlist__find_evsel_by_str(evlist, term->val.str);
972 if (!evsel) {
973 pr_debug("Event (for '%s') '%s' doesn't exist\n",
974 map_name, term->val.str);
975 return -BPF_LOADER_ERRNO__OBJCONF_MAP_NOEVT;
976 }
977
978 err = bpf_map__get_def(map, &def);
979 if (err) {
980 pr_debug("Unable to get map definition from '%s'\n",
981 map_name);
982 return err;
983 }
984
985 /*
986 * No need to check key_size and value_size:
987 * kernel has already checked them.
988 */
989 if (def.type != BPF_MAP_TYPE_PERF_EVENT_ARRAY) {
990 pr_debug("Map %s type is not BPF_MAP_TYPE_PERF_EVENT_ARRAY\n",
991 map_name);
992 return -BPF_LOADER_ERRNO__OBJCONF_MAP_TYPE;
993 }
994
995 op = bpf_map__add_newop(map, term);
996 if (IS_ERR(op))
997 return PTR_ERR(op);
998 op->op_type = BPF_MAP_OP_SET_EVSEL;
999 op->v.evsel = evsel;
1000 return 0;
1001}
1002
1003static int
1004bpf_map__config_event(struct bpf_map *map,
1005 struct parse_events_term *term,
1006 struct perf_evlist *evlist)
1007{
1008 if (!term->err_val) {
1009 pr_debug("Config value not set\n");
1010 return -BPF_LOADER_ERRNO__OBJCONF_CONF;
1011 }
1012
1013 if (term->type_val != PARSE_EVENTS__TERM_TYPE_STR) {
1014 pr_debug("ERROR: wrong value type for 'event'\n");
1015 return -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE;
1016 }
1017
1018 return __bpf_map__config_event(map, term, evlist);
1019}
1020
1021struct bpf_obj_config__map_func {
1022 const char *config_opt;
1023 int (*config_func)(struct bpf_map *, struct parse_events_term *,
1024 struct perf_evlist *);
1025};
1026
1027struct bpf_obj_config__map_func bpf_obj_config__map_funcs[] = {
1028 {"value", bpf_map__config_value},
1029 {"event", bpf_map__config_event},
1030};
1031
1032static int
1033config_map_indices_range_check(struct parse_events_term *term,
1034 struct bpf_map *map,
1035 const char *map_name)
1036{
1037 struct parse_events_array *array = &term->array;
1038 struct bpf_map_def def;
1039 unsigned int i;
1040 int err;
1041
1042 if (!array->nr_ranges)
1043 return 0;
1044 if (!array->ranges) {
1045 pr_debug("ERROR: map %s: array->nr_ranges is %d but range array is NULL\n",
1046 map_name, (int)array->nr_ranges);
1047 return -BPF_LOADER_ERRNO__INTERNAL;
1048 }
1049
1050 err = bpf_map__get_def(map, &def);
1051 if (err) {
1052 pr_debug("ERROR: Unable to get map definition from '%s'\n",
1053 map_name);
1054 return -BPF_LOADER_ERRNO__INTERNAL;
1055 }
1056
1057 for (i = 0; i < array->nr_ranges; i++) {
1058 unsigned int start = array->ranges[i].start;
1059 size_t length = array->ranges[i].length;
1060 unsigned int idx = start + length - 1;
1061
1062 if (idx >= def.max_entries) {
1063 pr_debug("ERROR: index %d too large\n", idx);
1064 return -BPF_LOADER_ERRNO__OBJCONF_MAP_IDX2BIG;
1065 }
1066 }
1067 return 0;
1068}
1069
1070static int
1071bpf__obj_config_map(struct bpf_object *obj,
1072 struct parse_events_term *term,
1073 struct perf_evlist *evlist,
1074 int *key_scan_pos)
1075{
1076 /* key is "map:<mapname>.<config opt>" */
1077 char *map_name = strdup(term->config + sizeof("map:") - 1);
1078 struct bpf_map *map;
1079 int err = -BPF_LOADER_ERRNO__OBJCONF_OPT;
1080 char *map_opt;
1081 size_t i;
1082
1083 if (!map_name)
1084 return -ENOMEM;
1085
1086 map_opt = strchr(map_name, '.');
1087 if (!map_opt) {
1088 pr_debug("ERROR: Invalid map config: %s\n", map_name);
1089 goto out;
1090 }
1091
1092 *map_opt++ = '\0';
1093 if (*map_opt == '\0') {
1094 pr_debug("ERROR: Invalid map option: %s\n", term->config);
1095 goto out;
1096 }
1097
1098 map = bpf_object__get_map_by_name(obj, map_name);
1099 if (!map) {
1100 pr_debug("ERROR: Map %s doesn't exist\n", map_name);
1101 err = -BPF_LOADER_ERRNO__OBJCONF_MAP_NOTEXIST;
1102 goto out;
1103 }
1104
1105 *key_scan_pos += strlen(map_opt);
1106 err = config_map_indices_range_check(term, map, map_name);
1107 if (err)
1108 goto out;
1109 *key_scan_pos -= strlen(map_opt);
1110
1111 for (i = 0; i < ARRAY_SIZE(bpf_obj_config__map_funcs); i++) {
1112 struct bpf_obj_config__map_func *func =
1113 &bpf_obj_config__map_funcs[i];
1114
1115 if (strcmp(map_opt, func->config_opt) == 0) {
1116 err = func->config_func(map, term, evlist);
1117 goto out;
1118 }
1119 }
1120
1121 pr_debug("ERROR: Invalid map config option '%s'\n", map_opt);
1122 err = -BPF_LOADER_ERRNO__OBJCONF_MAP_OPT;
1123out:
1124 free(map_name);
1125 if (!err)
1126 key_scan_pos += strlen(map_opt);
1127 return err;
1128}
1129
1130int bpf__config_obj(struct bpf_object *obj,
1131 struct parse_events_term *term,
1132 struct perf_evlist *evlist,
1133 int *error_pos)
1134{
1135 int key_scan_pos = 0;
1136 int err;
1137
1138 if (!obj || !term || !term->config)
1139 return -EINVAL;
1140
1141 if (!prefixcmp(term->config, "map:")) {
1142 key_scan_pos = sizeof("map:") - 1;
1143 err = bpf__obj_config_map(obj, term, evlist, &key_scan_pos);
1144 goto out;
1145 }
1146 err = -BPF_LOADER_ERRNO__OBJCONF_OPT;
1147out:
1148 if (error_pos)
1149 *error_pos = key_scan_pos;
1150 return err;
1151
1152}
1153
1154typedef int (*map_config_func_t)(const char *name, int map_fd,
1155 struct bpf_map_def *pdef,
1156 struct bpf_map_op *op,
1157 void *pkey, void *arg);
1158
1159static int
1160foreach_key_array_all(map_config_func_t func,
1161 void *arg, const char *name,
1162 int map_fd, struct bpf_map_def *pdef,
1163 struct bpf_map_op *op)
1164{
1165 unsigned int i;
1166 int err;
1167
1168 for (i = 0; i < pdef->max_entries; i++) {
1169 err = func(name, map_fd, pdef, op, &i, arg);
1170 if (err) {
1171 pr_debug("ERROR: failed to insert value to %s[%u]\n",
1172 name, i);
1173 return err;
1174 }
1175 }
1176 return 0;
1177}
1178
1179static int
1180foreach_key_array_ranges(map_config_func_t func, void *arg,
1181 const char *name, int map_fd,
1182 struct bpf_map_def *pdef,
1183 struct bpf_map_op *op)
1184{
1185 unsigned int i, j;
1186 int err;
1187
1188 for (i = 0; i < op->k.array.nr_ranges; i++) {
1189 unsigned int start = op->k.array.ranges[i].start;
1190 size_t length = op->k.array.ranges[i].length;
1191
1192 for (j = 0; j < length; j++) {
1193 unsigned int idx = start + j;
1194
1195 err = func(name, map_fd, pdef, op, &idx, arg);
1196 if (err) {
1197 pr_debug("ERROR: failed to insert value to %s[%u]\n",
1198 name, idx);
1199 return err;
1200 }
1201 }
1202 }
1203 return 0;
1204}
1205
1206static int
1207bpf_map_config_foreach_key(struct bpf_map *map,
1208 map_config_func_t func,
1209 void *arg)
1210{
1211 int err, map_fd;
1212 const char *name;
1213 struct bpf_map_op *op;
1214 struct bpf_map_def def;
1215 struct bpf_map_priv *priv;
1216
1217 name = bpf_map__get_name(map);
1218
1219 err = bpf_map__get_private(map, (void **)&priv);
1220 if (err) {
1221 pr_debug("ERROR: failed to get private from map %s\n", name);
1222 return -BPF_LOADER_ERRNO__INTERNAL;
1223 }
1224 if (!priv || list_empty(&priv->ops_list)) {
1225 pr_debug("INFO: nothing to config for map %s\n", name);
1226 return 0;
1227 }
1228
1229 err = bpf_map__get_def(map, &def);
1230 if (err) {
1231 pr_debug("ERROR: failed to get definition from map %s\n", name);
1232 return -BPF_LOADER_ERRNO__INTERNAL;
1233 }
1234 map_fd = bpf_map__get_fd(map);
1235 if (map_fd < 0) {
1236 pr_debug("ERROR: failed to get fd from map %s\n", name);
1237 return map_fd;
1238 }
1239
1240 list_for_each_entry(op, &priv->ops_list, list) {
1241 switch (def.type) {
1242 case BPF_MAP_TYPE_ARRAY:
1243 case BPF_MAP_TYPE_PERF_EVENT_ARRAY:
1244 switch (op->key_type) {
1245 case BPF_MAP_KEY_ALL:
1246 err = foreach_key_array_all(func, arg, name,
1247 map_fd, &def, op);
1248 break;
1249 case BPF_MAP_KEY_RANGES:
1250 err = foreach_key_array_ranges(func, arg, name,
1251 map_fd, &def,
1252 op);
1253 break;
1254 default:
1255 pr_debug("ERROR: keytype for map '%s' invalid\n",
1256 name);
1257 return -BPF_LOADER_ERRNO__INTERNAL;
1258 }
1259 if (err)
1260 return err;
1261 break;
1262 default:
1263 pr_debug("ERROR: type of '%s' incorrect\n", name);
1264 return -BPF_LOADER_ERRNO__OBJCONF_MAP_TYPE;
1265 }
1266 }
1267
1268 return 0;
1269}
1270
1271static int
1272apply_config_value_for_key(int map_fd, void *pkey,
1273 size_t val_size, u64 val)
1274{
1275 int err = 0;
1276
1277 switch (val_size) {
1278 case 1: {
1279 u8 _val = (u8)(val);
1280 err = bpf_map_update_elem(map_fd, pkey, &_val, BPF_ANY);
1281 break;
1282 }
1283 case 2: {
1284 u16 _val = (u16)(val);
1285 err = bpf_map_update_elem(map_fd, pkey, &_val, BPF_ANY);
1286 break;
1287 }
1288 case 4: {
1289 u32 _val = (u32)(val);
1290 err = bpf_map_update_elem(map_fd, pkey, &_val, BPF_ANY);
1291 break;
1292 }
1293 case 8: {
1294 err = bpf_map_update_elem(map_fd, pkey, &val, BPF_ANY);
1295 break;
1296 }
1297 default:
1298 pr_debug("ERROR: invalid value size\n");
1299 return -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUESIZE;
1300 }
1301 if (err && errno)
1302 err = -errno;
1303 return err;
1304}
1305
1306static int
1307apply_config_evsel_for_key(const char *name, int map_fd, void *pkey,
1308 struct perf_evsel *evsel)
1309{
1310 struct xyarray *xy = evsel->fd;
1311 struct perf_event_attr *attr;
1312 unsigned int key, events;
1313 bool check_pass = false;
1314 int *evt_fd;
1315 int err;
1316
1317 if (!xy) {
1318 pr_debug("ERROR: evsel not ready for map %s\n", name);
1319 return -BPF_LOADER_ERRNO__INTERNAL;
1320 }
1321
1322 if (xy->row_size / xy->entry_size != 1) {
1323 pr_debug("ERROR: Dimension of target event is incorrect for map %s\n",
1324 name);
1325 return -BPF_LOADER_ERRNO__OBJCONF_MAP_EVTDIM;
1326 }
1327
1328 attr = &evsel->attr;
1329 if (attr->inherit) {
1330 pr_debug("ERROR: Can't put inherit event into map %s\n", name);
1331 return -BPF_LOADER_ERRNO__OBJCONF_MAP_EVTINH;
1332 }
1333
1334 if (perf_evsel__is_bpf_output(evsel))
1335 check_pass = true;
1336 if (attr->type == PERF_TYPE_RAW)
1337 check_pass = true;
1338 if (attr->type == PERF_TYPE_HARDWARE)
1339 check_pass = true;
1340 if (!check_pass) {
1341 pr_debug("ERROR: Event type is wrong for map %s\n", name);
1342 return -BPF_LOADER_ERRNO__OBJCONF_MAP_EVTTYPE;
1343 }
1344
1345 events = xy->entries / (xy->row_size / xy->entry_size);
1346 key = *((unsigned int *)pkey);
1347 if (key >= events) {
1348 pr_debug("ERROR: there is no event %d for map %s\n",
1349 key, name);
1350 return -BPF_LOADER_ERRNO__OBJCONF_MAP_MAPSIZE;
1351 }
1352 evt_fd = xyarray__entry(xy, key, 0);
1353 err = bpf_map_update_elem(map_fd, pkey, evt_fd, BPF_ANY);
1354 if (err && errno)
1355 err = -errno;
1356 return err;
1357}
1358
1359static int
1360apply_obj_config_map_for_key(const char *name, int map_fd,
1361 struct bpf_map_def *pdef __maybe_unused,
1362 struct bpf_map_op *op,
1363 void *pkey, void *arg __maybe_unused)
1364{
1365 int err;
1366
1367 switch (op->op_type) {
1368 case BPF_MAP_OP_SET_VALUE:
1369 err = apply_config_value_for_key(map_fd, pkey,
1370 pdef->value_size,
1371 op->v.value);
1372 break;
1373 case BPF_MAP_OP_SET_EVSEL:
1374 err = apply_config_evsel_for_key(name, map_fd, pkey,
1375 op->v.evsel);
1376 break;
1377 default:
1378 pr_debug("ERROR: unknown value type for '%s'\n", name);
1379 err = -BPF_LOADER_ERRNO__INTERNAL;
1380 }
1381 return err;
1382}
1383
1384static int
1385apply_obj_config_map(struct bpf_map *map)
1386{
1387 return bpf_map_config_foreach_key(map,
1388 apply_obj_config_map_for_key,
1389 NULL);
1390}
1391
1392static int
1393apply_obj_config_object(struct bpf_object *obj)
1394{
1395 struct bpf_map *map;
1396 int err;
1397
1398 bpf_map__for_each(map, obj) {
1399 err = apply_obj_config_map(map);
1400 if (err)
1401 return err;
1402 }
1403 return 0;
1404}
1405
1406int bpf__apply_obj_config(void)
1407{
1408 struct bpf_object *obj, *tmp;
1409 int err;
1410
1411 bpf_object__for_each_safe(obj, tmp) {
1412 err = apply_obj_config_object(obj);
1413 if (err)
1414 return err;
1415 }
1416
1417 return 0;
1418}
1419
742#define ERRNO_OFFSET(e) ((e) - __BPF_LOADER_ERRNO__START) 1420#define ERRNO_OFFSET(e) ((e) - __BPF_LOADER_ERRNO__START)
743#define ERRCODE_OFFSET(c) ERRNO_OFFSET(BPF_LOADER_ERRNO__##c) 1421#define ERRCODE_OFFSET(c) ERRNO_OFFSET(BPF_LOADER_ERRNO__##c)
744#define NR_ERRNO (__BPF_LOADER_ERRNO__END - __BPF_LOADER_ERRNO__START) 1422#define NR_ERRNO (__BPF_LOADER_ERRNO__END - __BPF_LOADER_ERRNO__START)
@@ -753,6 +1431,20 @@ static const char *bpf_loader_strerror_table[NR_ERRNO] = {
753 [ERRCODE_OFFSET(PROLOGUE)] = "Failed to generate prologue", 1431 [ERRCODE_OFFSET(PROLOGUE)] = "Failed to generate prologue",
754 [ERRCODE_OFFSET(PROLOGUE2BIG)] = "Prologue too big for program", 1432 [ERRCODE_OFFSET(PROLOGUE2BIG)] = "Prologue too big for program",
755 [ERRCODE_OFFSET(PROLOGUEOOB)] = "Offset out of bound for prologue", 1433 [ERRCODE_OFFSET(PROLOGUEOOB)] = "Offset out of bound for prologue",
1434 [ERRCODE_OFFSET(OBJCONF_OPT)] = "Invalid object config option",
1435 [ERRCODE_OFFSET(OBJCONF_CONF)] = "Config value not set (missing '=')",
1436 [ERRCODE_OFFSET(OBJCONF_MAP_OPT)] = "Invalid object map config option",
1437 [ERRCODE_OFFSET(OBJCONF_MAP_NOTEXIST)] = "Target map doesn't exist",
1438 [ERRCODE_OFFSET(OBJCONF_MAP_VALUE)] = "Incorrect value type for map",
1439 [ERRCODE_OFFSET(OBJCONF_MAP_TYPE)] = "Incorrect map type",
1440 [ERRCODE_OFFSET(OBJCONF_MAP_KEYSIZE)] = "Incorrect map key size",
1441 [ERRCODE_OFFSET(OBJCONF_MAP_VALUESIZE)] = "Incorrect map value size",
1442 [ERRCODE_OFFSET(OBJCONF_MAP_NOEVT)] = "Event not found for map setting",
1443 [ERRCODE_OFFSET(OBJCONF_MAP_MAPSIZE)] = "Invalid map size for event setting",
1444 [ERRCODE_OFFSET(OBJCONF_MAP_EVTDIM)] = "Event dimension too large",
1445 [ERRCODE_OFFSET(OBJCONF_MAP_EVTINH)] = "Doesn't support inherit event",
1446 [ERRCODE_OFFSET(OBJCONF_MAP_EVTTYPE)] = "Wrong event type for map",
1447 [ERRCODE_OFFSET(OBJCONF_MAP_IDX2BIG)] = "Index too large",
756}; 1448};
757 1449
758static int 1450static int
@@ -872,3 +1564,29 @@ int bpf__strerror_load(struct bpf_object *obj,
872 bpf__strerror_end(buf, size); 1564 bpf__strerror_end(buf, size);
873 return 0; 1565 return 0;
874} 1566}
1567
1568int bpf__strerror_config_obj(struct bpf_object *obj __maybe_unused,
1569 struct parse_events_term *term __maybe_unused,
1570 struct perf_evlist *evlist __maybe_unused,
1571 int *error_pos __maybe_unused, int err,
1572 char *buf, size_t size)
1573{
1574 bpf__strerror_head(err, buf, size);
1575 bpf__strerror_entry(BPF_LOADER_ERRNO__OBJCONF_MAP_TYPE,
1576 "Can't use this config term with this map type");
1577 bpf__strerror_end(buf, size);
1578 return 0;
1579}
1580
1581int bpf__strerror_apply_obj_config(int err, char *buf, size_t size)
1582{
1583 bpf__strerror_head(err, buf, size);
1584 bpf__strerror_entry(BPF_LOADER_ERRNO__OBJCONF_MAP_EVTDIM,
1585 "Cannot set event to BPF map in multi-thread tracing");
1586 bpf__strerror_entry(BPF_LOADER_ERRNO__OBJCONF_MAP_EVTINH,
1587 "%s (Hint: use -i to turn off inherit)", emsg);
1588 bpf__strerror_entry(BPF_LOADER_ERRNO__OBJCONF_MAP_EVTTYPE,
1589 "Can only put raw, hardware and BPF output event into a BPF map");
1590 bpf__strerror_end(buf, size);
1591 return 0;
1592}
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-02 23:18:38 -0400