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-rw-r--r--tools/bpf/bpftool/Documentation/bpftool-map.rst2
-rw-r--r--tools/bpf/bpftool/Makefile14
-rw-r--r--tools/bpf/bpftool/gen.c34
-rw-r--r--tools/bpf/bpftool/map.c2
-rw-r--r--tools/bpf/bpftool/pids.c19
-rw-r--r--tools/bpf/bpftool/skeleton/pid_iter.bpf.c4
6 files changed, 46 insertions, 29 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst
index 3b7ba037af95..9d6a314dfd7a 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-map.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst
@@ -55,7 +55,7 @@ MAP COMMANDS
| | **devmap** | **devmap_hash** | **sockmap** | **cpumap** | **xskmap** | **sockhash**
| | **cgroup_storage** | **reuseport_sockarray** | **percpu_cgroup_storage**
| | **queue** | **stack** | **sk_storage** | **struct_ops** | **ringbuf** | **inode_storage**
-| | **task_storage** | **bloom_filter** | **user_ringbuf** | **cgrp_storage** }
+| | **task_storage** | **bloom_filter** | **user_ringbuf** | **cgrp_storage** | **arena** }
DESCRIPTION
===========
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index e9154ace80ff..b67454b45a49 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -89,6 +89,10 @@ ifneq ($(EXTRA_LDFLAGS),)
LDFLAGS += $(EXTRA_LDFLAGS)
endif
+HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\
+ $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))
+HOST_LDFLAGS := $(LDFLAGS)
+
INSTALL ?= install
RM ?= rm -f
@@ -178,12 +182,9 @@ ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),)
SRCS := $(filter-out jit_disasm.c,$(SRCS))
endif
-HOST_CFLAGS = $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\
- $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))
-
BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
-BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o disasm.o)
+BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o)
$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
@@ -231,14 +232,11 @@ endif
CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
-$(BOOTSTRAP_OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
- $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@
-
$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
$(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@
$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)
- $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@
+ $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@
$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 1f579eacd9d4..786268f1a483 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -120,6 +120,12 @@ static bool get_datasec_ident(const char *sec_name, char *buf, size_t buf_sz)
static const char *pfxs[] = { ".data", ".rodata", ".bss", ".kconfig" };
int i, n;
+ /* recognize hard coded LLVM section name */
+ if (strcmp(sec_name, ".addr_space.1") == 0) {
+ /* this is the name to use in skeleton */
+ snprintf(buf, buf_sz, "arena");
+ return true;
+ }
for (i = 0, n = ARRAY_SIZE(pfxs); i < n; i++) {
const char *pfx = pfxs[i];
@@ -248,8 +254,15 @@ static const struct btf_type *find_type_for_map(struct btf *btf, const char *map
return NULL;
}
-static bool is_internal_mmapable_map(const struct bpf_map *map, char *buf, size_t sz)
+static bool is_mmapable_map(const struct bpf_map *map, char *buf, size_t sz)
{
+ size_t tmp_sz;
+
+ if (bpf_map__type(map) == BPF_MAP_TYPE_ARENA && bpf_map__initial_value(map, &tmp_sz)) {
+ snprintf(buf, sz, "arena");
+ return true;
+ }
+
if (!bpf_map__is_internal(map) || !(bpf_map__map_flags(map) & BPF_F_MMAPABLE))
return false;
@@ -274,7 +287,7 @@ static int codegen_datasecs(struct bpf_object *obj, const char *obj_name)
bpf_object__for_each_map(map, obj) {
/* only generate definitions for memory-mapped internal maps */
- if (!is_internal_mmapable_map(map, map_ident, sizeof(map_ident)))
+ if (!is_mmapable_map(map, map_ident, sizeof(map_ident)))
continue;
sec = find_type_for_map(btf, map_ident);
@@ -327,7 +340,7 @@ static int codegen_subskel_datasecs(struct bpf_object *obj, const char *obj_name
bpf_object__for_each_map(map, obj) {
/* only generate definitions for memory-mapped internal maps */
- if (!is_internal_mmapable_map(map, map_ident, sizeof(map_ident)))
+ if (!is_mmapable_map(map, map_ident, sizeof(map_ident)))
continue;
sec = find_type_for_map(btf, map_ident);
@@ -504,7 +517,7 @@ static void codegen_asserts(struct bpf_object *obj, const char *obj_name)
", obj_name);
bpf_object__for_each_map(map, obj) {
- if (!is_internal_mmapable_map(map, map_ident, sizeof(map_ident)))
+ if (!is_mmapable_map(map, map_ident, sizeof(map_ident)))
continue;
sec = find_type_for_map(btf, map_ident);
@@ -720,7 +733,7 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
const void *mmap_data = NULL;
size_t mmap_size = 0;
- if (!is_internal_mmapable_map(map, ident, sizeof(ident)))
+ if (!is_mmapable_map(map, ident, sizeof(ident)))
continue;
codegen("\
@@ -782,7 +795,7 @@ static int gen_trace(struct bpf_object *obj, const char *obj_name, const char *h
bpf_object__for_each_map(map, obj) {
const char *mmap_flags;
- if (!is_internal_mmapable_map(map, ident, sizeof(ident)))
+ if (!is_mmapable_map(map, ident, sizeof(ident)))
continue;
if (bpf_map__map_flags(map) & BPF_F_RDONLY_PROG)
@@ -871,7 +884,7 @@ codegen_maps_skeleton(struct bpf_object *obj, size_t map_cnt, bool mmaped)
",
i, bpf_map__name(map), i, ident);
/* memory-mapped internal maps */
- if (mmaped && is_internal_mmapable_map(map, ident, sizeof(ident))) {
+ if (mmaped && is_mmapable_map(map, ident, sizeof(ident))) {
printf("\ts->maps[%zu].mmaped = (void **)&obj->%s;\n",
i, ident);
}
@@ -1118,7 +1131,8 @@ static void gen_st_ops_shadow_init(struct btf *btf, struct bpf_object *obj)
continue;
codegen("\
\n\
- obj->struct_ops.%1$s = bpf_map__initial_value(obj->maps.%1$s, NULL);\n\
+ obj->struct_ops.%1$s = (typeof(obj->struct_ops.%1$s))\n\
+ bpf_map__initial_value(obj->maps.%1$s, NULL);\n\
\n\
", ident);
}
@@ -1617,7 +1631,7 @@ static int do_subskeleton(int argc, char **argv)
/* Also count all maps that have a name */
map_cnt++;
- if (!is_internal_mmapable_map(map, ident, sizeof(ident)))
+ if (!is_mmapable_map(map, ident, sizeof(ident)))
continue;
map_type_id = bpf_map__btf_value_type_id(map);
@@ -1739,7 +1753,7 @@ static int do_subskeleton(int argc, char **argv)
/* walk through each symbol and emit the runtime representation */
bpf_object__for_each_map(map, obj) {
- if (!is_internal_mmapable_map(map, ident, sizeof(ident)))
+ if (!is_mmapable_map(map, ident, sizeof(ident)))
continue;
map_type_id = bpf_map__btf_value_type_id(map);
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index f98f7bbea2b1..b89bd792c1d5 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -1463,7 +1463,7 @@ static int do_help(int argc, char **argv)
" devmap | devmap_hash | sockmap | cpumap | xskmap | sockhash |\n"
" cgroup_storage | reuseport_sockarray | percpu_cgroup_storage |\n"
" queue | stack | sk_storage | struct_ops | ringbuf | inode_storage |\n"
- " task_storage | bloom_filter | user_ringbuf | cgrp_storage }\n"
+ " task_storage | bloom_filter | user_ringbuf | cgrp_storage | arena }\n"
" " HELP_SPEC_OPTIONS " |\n"
" {-f|--bpffs} | {-n|--nomount} }\n"
"",
diff --git a/tools/bpf/bpftool/pids.c b/tools/bpf/bpftool/pids.c
index 00c77edb6331..9b898571b49e 100644
--- a/tools/bpf/bpftool/pids.c
+++ b/tools/bpf/bpftool/pids.c
@@ -101,7 +101,6 @@ int build_obj_refs_table(struct hashmap **map, enum bpf_obj_type type)
char buf[4096 / sizeof(*e) * sizeof(*e)];
struct pid_iter_bpf *skel;
int err, ret, fd = -1, i;
- libbpf_print_fn_t default_print;
*map = hashmap__new(hash_fn_for_key_as_id, equal_fn_for_key_as_id, NULL);
if (IS_ERR(*map)) {
@@ -118,12 +117,18 @@ int build_obj_refs_table(struct hashmap **map, enum bpf_obj_type type)
skel->rodata->obj_type = type;
- /* we don't want output polluted with libbpf errors if bpf_iter is not
- * supported
- */
- default_print = libbpf_set_print(libbpf_print_none);
- err = pid_iter_bpf__load(skel);
- libbpf_set_print(default_print);
+ if (!verifier_logs) {
+ libbpf_print_fn_t default_print;
+
+ /* Unless debug information is on, we don't want the output to
+ * be polluted with libbpf errors if bpf_iter is not supported.
+ */
+ default_print = libbpf_set_print(libbpf_print_none);
+ err = pid_iter_bpf__load(skel);
+ libbpf_set_print(default_print);
+ } else {
+ err = pid_iter_bpf__load(skel);
+ }
if (err) {
/* too bad, kernel doesn't support BPF iterators yet */
err = 0;
diff --git a/tools/bpf/bpftool/skeleton/pid_iter.bpf.c b/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
index 26004f0c5a6a..7bdbcac3cf62 100644
--- a/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
+++ b/tools/bpf/bpftool/skeleton/pid_iter.bpf.c
@@ -102,8 +102,8 @@ int iter(struct bpf_iter__task_file *ctx)
BPF_LINK_TYPE_PERF_EVENT___local)) {
struct bpf_link *link = (struct bpf_link *) file->private_data;
- if (link->type == bpf_core_enum_value(enum bpf_link_type___local,
- BPF_LINK_TYPE_PERF_EVENT___local)) {
+ if (BPF_CORE_READ(link, type) == bpf_core_enum_value(enum bpf_link_type___local,
+ BPF_LINK_TYPE_PERF_EVENT___local)) {
e.has_bpf_cookie = true;
e.bpf_cookie = get_bpf_cookie(link);
}
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