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-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-btf.rst6
-rw-r--r--tools/bpf/bpftool/Makefile3
-rw-r--r--tools/bpf/bpftool/bash-completion/bpftool3
-rw-r--r--tools/bpf/bpftool/btf.c193
-rw-r--r--tools/bpf/bpftool/cgroup.c40
-rw-r--r--tools/bpf/bpftool/common.c2
-rw-r--r--tools/bpf/bpftool/gen.c94
-rw-r--r--tools/bpf/bpftool/prog.c4
-rw-r--r--tools/bpf/bpftool/skeleton/pid_iter.bpf.c7
-rw-r--r--tools/bpf/bpftool/skeleton/profiler.bpf.c14
-rw-r--r--tools/bpf/resolve_btfids/main.c8
11 files changed, 328 insertions, 46 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-btf.rst b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
index eaba24320fb2..3f6bca03ad2e 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-btf.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
@@ -28,7 +28,7 @@ BTF COMMANDS
| **bpftool** **btf help**
|
| *BTF_SRC* := { **id** *BTF_ID* | **prog** *PROG* | **map** *MAP* [{**key** | **value** | **kv** | **all**}] | **file** *FILE* }
-| *FORMAT* := { **raw** | **c** }
+| *FORMAT* := { **raw** | **c** [**unsorted**] }
| *MAP* := { **id** *MAP_ID* | **pinned** *FILE* }
| *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* | **name** *PROG_NAME* }
@@ -63,7 +63,9 @@ bpftool btf dump *BTF_SRC*
pahole.
**format** option can be used to override default (raw) output format. Raw
- (**raw**) or C-syntax (**c**) output formats are supported.
+ (**raw**) or C-syntax (**c**) output formats are supported. With C-style
+ formatting, the output is sorted by default. Use the **unsorted** option
+ to avoid sorting the output.
bpftool btf help
Print short help message.
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index dfa4f1bebbb3..ba927379eb20 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -204,10 +204,11 @@ ifeq ($(feature-clang-bpf-co-re),1)
BUILD_BPF_SKELS := 1
-$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
ifeq ($(VMLINUX_H),)
+$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
else
+$(OUTPUT)vmlinux.h: $(VMLINUX_H)
$(Q)cp "$(VMLINUX_H)" $@
endif
diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool
index 04afe2ac2228..be99d49b8714 100644
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -930,6 +930,9 @@ _bpftool()
format)
COMPREPLY=( $( compgen -W "c raw" -- "$cur" ) )
;;
+ c)
+ COMPREPLY=( $( compgen -W "unsorted" -- "$cur" ) )
+ ;;
*)
# emit extra options
case ${words[3]} in
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 91fcb75babe3..6789c7a4d5ca 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -20,6 +20,8 @@
#include "json_writer.h"
#include "main.h"
+#define KFUNC_DECL_TAG "bpf_kfunc"
+
static const char * const btf_kind_str[NR_BTF_KINDS] = {
[BTF_KIND_UNKN] = "UNKNOWN",
[BTF_KIND_INT] = "INT",
@@ -43,6 +45,13 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
[BTF_KIND_ENUM64] = "ENUM64",
};
+struct sort_datum {
+ int index;
+ int type_rank;
+ const char *sort_name;
+ const char *own_name;
+};
+
static const char *btf_int_enc_str(__u8 encoding)
{
switch (encoding) {
@@ -454,15 +463,171 @@ static int dump_btf_raw(const struct btf *btf,
return 0;
}
+static int dump_btf_kfuncs(struct btf_dump *d, const struct btf *btf)
+{
+ LIBBPF_OPTS(btf_dump_emit_type_decl_opts, opts);
+ int cnt = btf__type_cnt(btf);
+ int i;
+
+ printf("\n/* BPF kfuncs */\n");
+ printf("#ifndef BPF_NO_KFUNC_PROTOTYPES\n");
+
+ for (i = 1; i < cnt; i++) {
+ const struct btf_type *t = btf__type_by_id(btf, i);
+ const char *name;
+ int err;
+
+ if (!btf_is_decl_tag(t))
+ continue;
+
+ if (btf_decl_tag(t)->component_idx != -1)
+ continue;
+
+ name = btf__name_by_offset(btf, t->name_off);
+ if (strncmp(name, KFUNC_DECL_TAG, sizeof(KFUNC_DECL_TAG)))
+ continue;
+
+ t = btf__type_by_id(btf, t->type);
+ if (!btf_is_func(t))
+ continue;
+
+ printf("extern ");
+
+ opts.field_name = btf__name_by_offset(btf, t->name_off);
+ err = btf_dump__emit_type_decl(d, t->type, &opts);
+ if (err)
+ return err;
+
+ printf(" __weak __ksym;\n");
+ }
+
+ printf("#endif\n\n");
+
+ return 0;
+}
+
static void __printf(2, 0) btf_dump_printf(void *ctx,
const char *fmt, va_list args)
{
vfprintf(stdout, fmt, args);
}
+static int btf_type_rank(const struct btf *btf, __u32 index, bool has_name)
+{
+ const struct btf_type *t = btf__type_by_id(btf, index);
+ const int kind = btf_kind(t);
+ const int max_rank = 10;
+
+ if (t->name_off)
+ has_name = true;
+
+ switch (kind) {
+ case BTF_KIND_ENUM:
+ case BTF_KIND_ENUM64:
+ return has_name ? 1 : 0;
+ case BTF_KIND_INT:
+ case BTF_KIND_FLOAT:
+ return 2;
+ case BTF_KIND_STRUCT:
+ case BTF_KIND_UNION:
+ return has_name ? 3 : max_rank;
+ case BTF_KIND_FUNC_PROTO:
+ return has_name ? 4 : max_rank;
+ case BTF_KIND_ARRAY:
+ if (has_name)
+ return btf_type_rank(btf, btf_array(t)->type, has_name);
+ return max_rank;
+ case BTF_KIND_TYPE_TAG:
+ case BTF_KIND_CONST:
+ case BTF_KIND_PTR:
+ case BTF_KIND_VOLATILE:
+ case BTF_KIND_RESTRICT:
+ case BTF_KIND_TYPEDEF:
+ case BTF_KIND_DECL_TAG:
+ if (has_name)
+ return btf_type_rank(btf, t->type, has_name);
+ return max_rank;
+ default:
+ return max_rank;
+ }
+}
+
+static const char *btf_type_sort_name(const struct btf *btf, __u32 index, bool from_ref)
+{
+ const struct btf_type *t = btf__type_by_id(btf, index);
+
+ switch (btf_kind(t)) {
+ case BTF_KIND_ENUM:
+ case BTF_KIND_ENUM64: {
+ int name_off = t->name_off;
+
+ /* Use name of the first element for anonymous enums if allowed */
+ if (!from_ref && !t->name_off && btf_vlen(t))
+ name_off = btf_enum(t)->name_off;
+
+ return btf__name_by_offset(btf, name_off);
+ }
+ case BTF_KIND_ARRAY:
+ return btf_type_sort_name(btf, btf_array(t)->type, true);
+ case BTF_KIND_TYPE_TAG:
+ case BTF_KIND_CONST:
+ case BTF_KIND_PTR:
+ case BTF_KIND_VOLATILE:
+ case BTF_KIND_RESTRICT:
+ case BTF_KIND_TYPEDEF:
+ case BTF_KIND_DECL_TAG:
+ return btf_type_sort_name(btf, t->type, true);
+ default:
+ return btf__name_by_offset(btf, t->name_off);
+ }
+ return NULL;
+}
+
+static int btf_type_compare(const void *left, const void *right)
+{
+ const struct sort_datum *d1 = (const struct sort_datum *)left;
+ const struct sort_datum *d2 = (const struct sort_datum *)right;
+ int r;
+
+ if (d1->type_rank != d2->type_rank)
+ return d1->type_rank < d2->type_rank ? -1 : 1;
+
+ r = strcmp(d1->sort_name, d2->sort_name);
+ if (r)
+ return r;
+
+ return strcmp(d1->own_name, d2->own_name);
+}
+
+static struct sort_datum *sort_btf_c(const struct btf *btf)
+{
+ struct sort_datum *datums;
+ int n;
+
+ n = btf__type_cnt(btf);
+ datums = malloc(sizeof(struct sort_datum) * n);
+ if (!datums)
+ return NULL;
+
+ for (int i = 0; i < n; ++i) {
+ struct sort_datum *d = datums + i;
+ const struct btf_type *t = btf__type_by_id(btf, i);
+
+ d->index = i;
+ d->type_rank = btf_type_rank(btf, i, false);
+ d->sort_name = btf_type_sort_name(btf, i, false);
+ d->own_name = btf__name_by_offset(btf, t->name_off);
+ }
+
+ qsort(datums, n, sizeof(struct sort_datum), btf_type_compare);
+
+ return datums;
+}
+
static int dump_btf_c(const struct btf *btf,
- __u32 *root_type_ids, int root_type_cnt)
+ __u32 *root_type_ids, int root_type_cnt, bool sort_dump)
{
+ struct sort_datum *datums = NULL;
struct btf_dump *d;
int err = 0, i;
@@ -476,6 +641,12 @@ static int dump_btf_c(const struct btf *btf,
printf("#ifndef BPF_NO_PRESERVE_ACCESS_INDEX\n");
printf("#pragma clang attribute push (__attribute__((preserve_access_index)), apply_to = record)\n");
printf("#endif\n\n");
+ printf("#ifndef __ksym\n");
+ printf("#define __ksym __attribute__((section(\".ksyms\")))\n");
+ printf("#endif\n\n");
+ printf("#ifndef __weak\n");
+ printf("#define __weak __attribute__((weak))\n");
+ printf("#endif\n\n");
if (root_type_cnt) {
for (i = 0; i < root_type_cnt; i++) {
@@ -486,11 +657,19 @@ static int dump_btf_c(const struct btf *btf,
} else {
int cnt = btf__type_cnt(btf);
+ if (sort_dump)
+ datums = sort_btf_c(btf);
for (i = 1; i < cnt; i++) {
- err = btf_dump__dump_type(d, i);
+ int idx = datums ? datums[i].index : i;
+
+ err = btf_dump__dump_type(d, idx);
if (err)
goto done;
}
+
+ err = dump_btf_kfuncs(d, btf);
+ if (err)
+ goto done;
}
printf("#ifndef BPF_NO_PRESERVE_ACCESS_INDEX\n");
@@ -500,6 +679,7 @@ static int dump_btf_c(const struct btf *btf,
printf("#endif /* __VMLINUX_H__ */\n");
done:
+ free(datums);
btf_dump__free(d);
return err;
}
@@ -549,10 +729,10 @@ static bool btf_is_kernel_module(__u32 btf_id)
static int do_dump(int argc, char **argv)
{
+ bool dump_c = false, sort_dump_c = true;
struct btf *btf = NULL, *base = NULL;
__u32 root_type_ids[2];
int root_type_cnt = 0;
- bool dump_c = false;
__u32 btf_id = -1;
const char *src;
int fd = -1;
@@ -663,6 +843,9 @@ static int do_dump(int argc, char **argv)
goto done;
}
NEXT_ARG();
+ } else if (is_prefix(*argv, "unsorted")) {
+ sort_dump_c = false;
+ NEXT_ARG();
} else {
p_err("unrecognized option: '%s'", *argv);
err = -EINVAL;
@@ -691,7 +874,7 @@ static int do_dump(int argc, char **argv)
err = -ENOTSUP;
goto done;
}
- err = dump_btf_c(btf, root_type_ids, root_type_cnt);
+ err = dump_btf_c(btf, root_type_ids, root_type_cnt, sort_dump_c);
} else {
err = dump_btf_raw(btf, root_type_ids, root_type_cnt);
}
@@ -1063,7 +1246,7 @@ static int do_help(int argc, char **argv)
" %1$s %2$s help\n"
"\n"
" BTF_SRC := { id BTF_ID | prog PROG | map MAP [{key | value | kv | all}] | file FILE }\n"
- " FORMAT := { raw | c }\n"
+ " FORMAT := { raw | c [unsorted] }\n"
" " HELP_SPEC_MAP "\n"
" " HELP_SPEC_PROGRAM "\n"
" " HELP_SPEC_OPTIONS " |\n"
diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c
index af6898c0f388..9af426d43299 100644
--- a/tools/bpf/bpftool/cgroup.c
+++ b/tools/bpf/bpftool/cgroup.c
@@ -19,6 +19,38 @@
#include "main.h"
+static const int cgroup_attach_types[] = {
+ BPF_CGROUP_INET_INGRESS,
+ BPF_CGROUP_INET_EGRESS,
+ BPF_CGROUP_INET_SOCK_CREATE,
+ BPF_CGROUP_INET_SOCK_RELEASE,
+ BPF_CGROUP_INET4_BIND,
+ BPF_CGROUP_INET6_BIND,
+ BPF_CGROUP_INET4_POST_BIND,
+ BPF_CGROUP_INET6_POST_BIND,
+ BPF_CGROUP_INET4_CONNECT,
+ BPF_CGROUP_INET6_CONNECT,
+ BPF_CGROUP_UNIX_CONNECT,
+ BPF_CGROUP_INET4_GETPEERNAME,
+ BPF_CGROUP_INET6_GETPEERNAME,
+ BPF_CGROUP_UNIX_GETPEERNAME,
+ BPF_CGROUP_INET4_GETSOCKNAME,
+ BPF_CGROUP_INET6_GETSOCKNAME,
+ BPF_CGROUP_UNIX_GETSOCKNAME,
+ BPF_CGROUP_UDP4_SENDMSG,
+ BPF_CGROUP_UDP6_SENDMSG,
+ BPF_CGROUP_UNIX_SENDMSG,
+ BPF_CGROUP_UDP4_RECVMSG,
+ BPF_CGROUP_UDP6_RECVMSG,
+ BPF_CGROUP_UNIX_RECVMSG,
+ BPF_CGROUP_SOCK_OPS,
+ BPF_CGROUP_DEVICE,
+ BPF_CGROUP_SYSCTL,
+ BPF_CGROUP_GETSOCKOPT,
+ BPF_CGROUP_SETSOCKOPT,
+ BPF_LSM_CGROUP
+};
+
#define HELP_SPEC_ATTACH_FLAGS \
"ATTACH_FLAGS := { multi | override }"
@@ -183,13 +215,13 @@ static int count_attached_bpf_progs(int cgroup_fd, enum bpf_attach_type type)
static int cgroup_has_attached_progs(int cgroup_fd)
{
- enum bpf_attach_type type;
+ unsigned int i = 0;
bool no_prog = true;
- for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) {
- int count = count_attached_bpf_progs(cgroup_fd, type);
+ for (i = 0; i < ARRAY_SIZE(cgroup_attach_types); i++) {
+ int count = count_attached_bpf_progs(cgroup_fd, cgroup_attach_types[i]);
- if (count < 0 && errno != EINVAL)
+ if (count < 0)
return -1;
if (count > 0) {
diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index 958e92acca8e..9b75639434b8 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -410,7 +410,7 @@ void get_prog_full_name(const struct bpf_prog_info *prog_info, int prog_fd,
{
const char *prog_name = prog_info->name;
const struct btf_type *func_type;
- const struct bpf_func_info finfo = {};
+ struct bpf_func_info finfo = {};
struct bpf_prog_info info = {};
__u32 info_len = sizeof(info);
struct btf *prog_btf = NULL;
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index b3979ddc0189..5a4d3240689e 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -848,28 +848,45 @@ out:
}
static void
-codegen_maps_skeleton(struct bpf_object *obj, size_t map_cnt, bool mmaped)
+codegen_maps_skeleton(struct bpf_object *obj, size_t map_cnt, bool mmaped, bool populate_links)
{
struct bpf_map *map;
char ident[256];
- size_t i;
+ size_t i, map_sz;
if (!map_cnt)
return;
+ /* for backward compatibility with old libbpf versions that don't
+ * handle new BPF skeleton with new struct bpf_map_skeleton definition
+ * that includes link field, avoid specifying new increased size,
+ * unless we absolutely have to (i.e., if there are struct_ops maps
+ * present)
+ */
+ map_sz = offsetof(struct bpf_map_skeleton, link);
+ if (populate_links) {
+ bpf_object__for_each_map(map, obj) {
+ if (bpf_map__type(map) == BPF_MAP_TYPE_STRUCT_OPS) {
+ map_sz = sizeof(struct bpf_map_skeleton);
+ break;
+ }
+ }
+ }
+
codegen("\
\n\
- \n\
+ \n\
/* maps */ \n\
s->map_cnt = %zu; \n\
- s->map_skel_sz = sizeof(*s->maps); \n\
- s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt, s->map_skel_sz);\n\
+ s->map_skel_sz = %zu; \n\
+ s->maps = (struct bpf_map_skeleton *)calloc(s->map_cnt,\n\
+ sizeof(*s->maps) > %zu ? sizeof(*s->maps) : %zu);\n\
if (!s->maps) { \n\
err = -ENOMEM; \n\
goto err; \n\
} \n\
",
- map_cnt
+ map_cnt, map_sz, map_sz, map_sz
);
i = 0;
bpf_object__for_each_map(map, obj) {
@@ -878,15 +895,22 @@ codegen_maps_skeleton(struct bpf_object *obj, size_t map_cnt, bool mmaped)
codegen("\
\n\
- \n\
- s->maps[%zu].name = \"%s\"; \n\
- s->maps[%zu].map = &obj->maps.%s; \n\
+ \n\
+ map = (struct bpf_map_skeleton *)((char *)s->maps + %zu * s->map_skel_sz);\n\
+ map->name = \"%s\"; \n\
+ map->map = &obj->maps.%s; \n\
",
- i, bpf_map__name(map), i, ident);
+ i, bpf_map__name(map), ident);
/* memory-mapped internal maps */
if (mmaped && is_mmapable_map(map, ident, sizeof(ident))) {
- printf("\ts->maps[%zu].mmaped = (void **)&obj->%s;\n",
- i, ident);
+ printf("\tmap->mmaped = (void **)&obj->%s;\n", ident);
+ }
+
+ if (populate_links && bpf_map__type(map) == BPF_MAP_TYPE_STRUCT_OPS) {
+ codegen("\
+ \n\
+ map->link = &obj->links.%s; \n\
+ ", ident);
}
i++;
}
@@ -1141,7 +1165,7 @@ static void gen_st_ops_shadow_init(struct btf *btf, struct bpf_object *obj)
static int do_skeleton(int argc, char **argv)
{
char header_guard[MAX_OBJ_NAME_LEN + sizeof("__SKEL_H__")];
- size_t map_cnt = 0, prog_cnt = 0, file_sz, mmap_sz;
+ size_t map_cnt = 0, prog_cnt = 0, attach_map_cnt = 0, file_sz, mmap_sz;
DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts);
char obj_name[MAX_OBJ_NAME_LEN] = "", *obj_data;
struct bpf_object *obj = NULL;
@@ -1225,6 +1249,10 @@ static int do_skeleton(int argc, char **argv)
bpf_map__name(map));
continue;
}
+
+ if (bpf_map__type(map) == BPF_MAP_TYPE_STRUCT_OPS)
+ attach_map_cnt++;
+
map_cnt++;
}
bpf_object__for_each_program(prog, obj) {
@@ -1260,6 +1288,8 @@ static int do_skeleton(int argc, char **argv)
#include <stdlib.h> \n\
#include <bpf/libbpf.h> \n\
\n\
+ #define BPF_SKEL_SUPPORTS_MAP_AUTO_ATTACH 1 \n\
+ \n\
struct %1$s { \n\
struct bpf_object_skeleton *skeleton; \n\
struct bpf_object *obj; \n\
@@ -1297,6 +1327,9 @@ static int do_skeleton(int argc, char **argv)
bpf_program__name(prog));
}
printf("\t} progs;\n");
+ }
+
+ if (prog_cnt + attach_map_cnt) {
printf("\tstruct {\n");
bpf_object__for_each_program(prog, obj) {
if (use_loader)
@@ -1306,6 +1339,19 @@ static int do_skeleton(int argc, char **argv)
printf("\t\tstruct bpf_link *%s;\n",
bpf_program__name(prog));
}
+
+ bpf_object__for_each_map(map, obj) {
+ if (!get_map_ident(map, ident, sizeof(ident)))
+ continue;
+ if (bpf_map__type(map) != BPF_MAP_TYPE_STRUCT_OPS)
+ continue;
+
+ if (use_loader)
+ printf("t\tint %s_fd;\n", ident);
+ else
+ printf("\t\tstruct bpf_link *%s;\n", ident);
+ }
+
printf("\t} links;\n");
}
@@ -1433,6 +1479,7 @@ static int do_skeleton(int argc, char **argv)
%1$s__create_skeleton(struct %1$s *obj) \n\
{ \n\
struct bpf_object_skeleton *s; \n\
+ struct bpf_map_skeleton *map __attribute__((unused));\n\
int err; \n\
\n\
s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s));\n\
@@ -1448,7 +1495,7 @@ static int do_skeleton(int argc, char **argv)
obj_name
);
- codegen_maps_skeleton(obj, map_cnt, true /*mmaped*/);
+ codegen_maps_skeleton(obj, map_cnt, true /*mmaped*/, true /*links*/);
codegen_progs_skeleton(obj, prog_cnt, true /*populate_links*/);
codegen("\
@@ -1723,6 +1770,7 @@ static int do_subskeleton(int argc, char **argv)
{ \n\
struct %1$s *obj; \n\
struct bpf_object_subskeleton *s; \n\
+ struct bpf_map_skeleton *map __attribute__((unused));\n\
int err; \n\
\n\
obj = (struct %1$s *)calloc(1, sizeof(*obj)); \n\
@@ -1786,7 +1834,7 @@ static int do_subskeleton(int argc, char **argv)
}
}
- codegen_maps_skeleton(obj, map_cnt, false /*mmaped*/);
+ codegen_maps_skeleton(obj, map_cnt, false /*mmaped*/, false /*links*/);
codegen_progs_skeleton(obj, prog_cnt, false /*links*/);
codegen("\
@@ -2379,15 +2427,6 @@ out:
return err;
}
-static int btfgen_remap_id(__u32 *type_id, void *ctx)
-{
- unsigned int *ids = ctx;
-
- *type_id = ids[*type_id];
-
- return 0;
-}
-
/* Generate BTF from relocation information previously recorded */
static struct btf *btfgen_get_btf(struct btfgen_info *info)
{
@@ -2467,10 +2506,15 @@ static struct btf *btfgen_get_btf(struct btfgen_info *info)
/* second pass: fix up type ids */
for (i = 1; i < btf__type_cnt(btf_new); i++) {
struct btf_type *btf_type = (struct btf_type *) btf__type_by_id(btf_new, i);
+ struct btf_field_iter it;
+ __u32 *type_id;
- err = btf_type_visit_type_ids(btf_type, btfgen_remap_id, ids);
+ err = btf_field_iter_init(&it, btf_type, BTF_FIELD_ITER_IDS);
if (err)
goto err_out;
+
+ while ((type_id = btf_field_iter_next(&it)))
+ *type_id = ids[*type_id];
}
free(ids);
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 1a501cf09e78..40ea743d139f 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1813,6 +1813,10 @@ offload_dev:
}
if (pinmaps) {
+ err = create_and_mount_bpffs_dir(pinmaps);
+ if (err)
+ goto err_unpin;
+
err = bpf_object__pin_maps(obj, pinmaps);
if (err) {
p_err("failed to pin all maps");
diff --git a/tools/bpf/bpftool/skeleton/pid_iter.bpf.c b/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
index 7bdbcac3cf62..948dde25034e 100644
--- a/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
+++ b/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
@@ -29,6 +29,7 @@ enum bpf_link_type___local {
};
extern const void bpf_link_fops __ksym;
+extern const void bpf_link_fops_poll __ksym __weak;
extern const void bpf_map_fops __ksym;
extern const void bpf_prog_fops __ksym;
extern const void btf_fops __ksym;
@@ -84,7 +85,11 @@ int iter(struct bpf_iter__task_file *ctx)
fops = &btf_fops;
break;
case BPF_OBJ_LINK:
- fops = &bpf_link_fops;
+ if (&bpf_link_fops_poll &&
+ file->f_op == &bpf_link_fops_poll)
+ fops = &bpf_link_fops_poll;
+ else
+ fops = &bpf_link_fops;
break;
default:
return 0;
diff --git a/tools/bpf/bpftool/skeleton/profiler.bpf.c b/tools/bpf/bpftool/skeleton/profiler.bpf.c
index 2f80edc682f1..f48c783cb9f7 100644
--- a/tools/bpf/bpftool/skeleton/profiler.bpf.c
+++ b/tools/bpf/bpftool/skeleton/profiler.bpf.c
@@ -40,17 +40,17 @@ struct {
const volatile __u32 num_cpu = 1;
const volatile __u32 num_metric = 1;
-#define MAX_NUM_MATRICS 4
+#define MAX_NUM_METRICS 4
SEC("fentry/XXX")
int BPF_PROG(fentry_XXX)
{
- struct bpf_perf_event_value___local *ptrs[MAX_NUM_MATRICS];
+ struct bpf_perf_event_value___local *ptrs[MAX_NUM_METRICS];
u32 key = bpf_get_smp_processor_id();
u32 i;
/* look up before reading, to reduce error */
- for (i = 0; i < num_metric && i < MAX_NUM_MATRICS; i++) {
+ for (i = 0; i < num_metric && i < MAX_NUM_METRICS; i++) {
u32 flag = i;
ptrs[i] = bpf_map_lookup_elem(&fentry_readings, &flag);
@@ -58,7 +58,7 @@ int BPF_PROG(fentry_XXX)
return 0;
}
- for (i = 0; i < num_metric && i < MAX_NUM_MATRICS; i++) {
+ for (i = 0; i < num_metric && i < MAX_NUM_METRICS; i++) {
struct bpf_perf_event_value___local reading;
int err;
@@ -99,14 +99,14 @@ fexit_update_maps(u32 id, struct bpf_perf_event_value___local *after)
SEC("fexit/XXX")
int BPF_PROG(fexit_XXX)
{
- struct bpf_perf_event_value___local readings[MAX_NUM_MATRICS];
+ struct bpf_perf_event_value___local readings[MAX_NUM_METRICS];
u32 cpu = bpf_get_smp_processor_id();
u32 i, zero = 0;
int err;
u64 *count;
/* read all events before updating the maps, to reduce error */
- for (i = 0; i < num_metric && i < MAX_NUM_MATRICS; i++) {
+ for (i = 0; i < num_metric && i < MAX_NUM_METRICS; i++) {
err = bpf_perf_event_read_value(&events, cpu + i * num_cpu,
(void *)(readings + i),
sizeof(*readings));
@@ -116,7 +116,7 @@ int BPF_PROG(fexit_XXX)
count = bpf_map_lookup_elem(&counts, &zero);
if (count) {
*count += 1;
- for (i = 0; i < num_metric && i < MAX_NUM_MATRICS; i++)
+ for (i = 0; i < num_metric && i < MAX_NUM_METRICS; i++)
fexit_update_maps(i, &readings[i]);
}
return 0;
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c
index af393c7dee1f..936ef95c3d32 100644
--- a/tools/bpf/resolve_btfids/main.c
+++ b/tools/bpf/resolve_btfids/main.c
@@ -409,6 +409,14 @@ static int elf_collect(struct object *obj)
obj->efile.idlist = data;
obj->efile.idlist_shndx = idx;
obj->efile.idlist_addr = sh.sh_addr;
+ } else if (!strcmp(name, BTF_BASE_ELF_SEC)) {
+ /* If a .BTF.base section is found, do not resolve
+ * BTF ids relative to vmlinux; resolve relative
+ * to the .BTF.base section instead. btf__parse_split()
+ * will take care of this once the base BTF it is
+ * passed is NULL.
+ */
+ obj->base_btf_path = NULL;
}
if (compressed_section_fix(elf, scn, &sh))
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-23 23:10:53 +0000