* [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API
@ 2022-01-10 22:34 Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 1/4] selftests/bpf: " Kui-Feng Lee
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2022-01-10 22:34 UTC (permalink / raw)
To: bpf, ast, daniel, andrii; +Cc: Kui-Feng Lee
bpf_object__find_program_by_title is going to be deprecated since
v0.7. Replace all use cases with bpf_object__find_program_by_name if
possible, or use bpf_object__for_each_program to iterate over
programs, matching section names.
V3 fixes a broken test case, fexit_bpf2bpf, in selftests/bpf, using
bpf_obj__for_each_program API instead.
[v2] https://lore.kernel.org/bpf/20211211003608.2764928-1-kuifeng@fb.com/
[v1] https://lore.kernel.org/bpf/20211210190855.1369060-1-kuifeng@fb.com/T/
Kui-Feng Lee (4):
selftests/bpf: Stop using bpf_object__find_program_by_title API.
samples/bpf: Stop using bpf_object__find_program_by_title API.
tools/perf: Stop using bpf_object__find_program_by_title API.
libbpf: Mark bpf_object__find_program_by_title API deprecated.
samples/bpf/hbm.c | 11 ++-
samples/bpf/xdp_fwd_user.c | 12 ++-
tools/lib/bpf/libbpf.h | 1 +
tools/perf/builtin-trace.c | 13 ++-
.../selftests/bpf/prog_tests/bpf_obj_id.c | 4 +-
.../bpf/prog_tests/connect_force_port.c | 18 ++---
.../selftests/bpf/prog_tests/core_reloc.c | 79 +++++++++++++------
.../selftests/bpf/prog_tests/fexit_bpf2bpf.c | 17 +++-
.../bpf/prog_tests/get_stack_raw_tp.c | 4 +-
.../bpf/prog_tests/sockopt_inherit.c | 15 ++--
.../selftests/bpf/prog_tests/stacktrace_map.c | 4 +-
.../bpf/prog_tests/stacktrace_map_raw_tp.c | 4 +-
.../selftests/bpf/prog_tests/test_overhead.c | 20 ++---
.../bpf/prog_tests/trampoline_count.c | 6 +-
14 files changed, 137 insertions(+), 71 deletions(-)
--
2.30.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v4 bpf-next 1/4] selftests/bpf: Stop using bpf_object__find_program_by_title API.
2022-01-10 22:34 [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API Kui-Feng Lee
@ 2022-01-10 22:34 ` Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 2/4] samples/bpf: " Kui-Feng Lee
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2022-01-10 22:34 UTC (permalink / raw)
To: bpf, ast, daniel, andrii; +Cc: Kui-Feng Lee
bpf_object__find_program_by_title is going to be deprecated. Replace
all use cases in tools/testing/selftests/bpf with
bpf_object__find_program_by_name or bpf_object__for_each_program.
Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
---
.../selftests/bpf/prog_tests/bpf_obj_id.c | 4 +-
.../bpf/prog_tests/connect_force_port.c | 18 ++---
.../selftests/bpf/prog_tests/core_reloc.c | 79 +++++++++++++------
.../selftests/bpf/prog_tests/fexit_bpf2bpf.c | 17 +++-
.../bpf/prog_tests/get_stack_raw_tp.c | 4 +-
.../bpf/prog_tests/sockopt_inherit.c | 15 ++--
.../selftests/bpf/prog_tests/stacktrace_map.c | 4 +-
.../bpf/prog_tests/stacktrace_map_raw_tp.c | 4 +-
.../selftests/bpf/prog_tests/test_overhead.c | 20 ++---
.../bpf/prog_tests/trampoline_count.c | 6 +-
10 files changed, 104 insertions(+), 67 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
index 0a6c5f00abd4..dbe56fa8582d 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
@@ -65,8 +65,8 @@ void serial_test_bpf_obj_id(void)
if (CHECK_FAIL(err))
goto done;
- prog = bpf_object__find_program_by_title(objs[i],
- "raw_tp/sys_enter");
+ prog = bpf_object__find_program_by_name(objs[i],
+ "test_obj_id");
if (CHECK_FAIL(!prog))
goto done;
links[i] = bpf_program__attach(prog);
diff --git a/tools/testing/selftests/bpf/prog_tests/connect_force_port.c b/tools/testing/selftests/bpf/prog_tests/connect_force_port.c
index ca574e1e30e6..9c4325f4aef2 100644
--- a/tools/testing/selftests/bpf/prog_tests/connect_force_port.c
+++ b/tools/testing/selftests/bpf/prog_tests/connect_force_port.c
@@ -67,9 +67,9 @@ static int run_test(int cgroup_fd, int server_fd, int family, int type)
goto close_bpf_object;
}
- prog = bpf_object__find_program_by_title(obj, v4 ?
- "cgroup/connect4" :
- "cgroup/connect6");
+ prog = bpf_object__find_program_by_name(obj, v4 ?
+ "connect4" :
+ "connect6");
if (CHECK(!prog, "find_prog", "connect prog not found\n")) {
err = -EIO;
goto close_bpf_object;
@@ -83,9 +83,9 @@ static int run_test(int cgroup_fd, int server_fd, int family, int type)
goto close_bpf_object;
}
- prog = bpf_object__find_program_by_title(obj, v4 ?
- "cgroup/getpeername4" :
- "cgroup/getpeername6");
+ prog = bpf_object__find_program_by_name(obj, v4 ?
+ "getpeername4" :
+ "getpeername6");
if (CHECK(!prog, "find_prog", "getpeername prog not found\n")) {
err = -EIO;
goto close_bpf_object;
@@ -99,9 +99,9 @@ static int run_test(int cgroup_fd, int server_fd, int family, int type)
goto close_bpf_object;
}
- prog = bpf_object__find_program_by_title(obj, v4 ?
- "cgroup/getsockname4" :
- "cgroup/getsockname6");
+ prog = bpf_object__find_program_by_name(obj, v4 ?
+ "getsockname4" :
+ "getsockname6");
if (CHECK(!prog, "find_prog", "getsockname prog not found\n")) {
err = -EIO;
goto close_bpf_object;
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index 44a9868c70ea..b8bdd1c3efca 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -10,7 +10,7 @@ static int duration = 0;
#define STRUCT_TO_CHAR_PTR(struct_name) (const char *)&(struct struct_name)
-#define MODULES_CASE(name, sec_name, tp_name) { \
+#define MODULES_CASE(name, pg_name, tp_name) { \
.case_name = name, \
.bpf_obj_file = "test_core_reloc_module.o", \
.btf_src_file = NULL, /* find in kernel module BTFs */ \
@@ -28,7 +28,7 @@ static int duration = 0;
.comm_len = sizeof("test_progs"), \
}, \
.output_len = sizeof(struct core_reloc_module_output), \
- .prog_sec_name = sec_name, \
+ .prog_name = pg_name, \
.raw_tp_name = tp_name, \
.trigger = __trigger_module_test_read, \
.needs_testmod = true, \
@@ -43,7 +43,9 @@ static int duration = 0;
#define FLAVORS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_flavors.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o" \
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_flavors" \
#define FLAVORS_CASE(name) { \
FLAVORS_CASE_COMMON(name), \
@@ -66,7 +68,9 @@ static int duration = 0;
#define NESTING_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_nesting.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o"
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_nesting" \
#define NESTING_CASE(name) { \
NESTING_CASE_COMMON(name), \
@@ -91,7 +95,9 @@ static int duration = 0;
#define ARRAYS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_arrays.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o"
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_arrays" \
#define ARRAYS_CASE(name) { \
ARRAYS_CASE_COMMON(name), \
@@ -123,7 +129,9 @@ static int duration = 0;
#define PRIMITIVES_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_primitives.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o"
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_primitives" \
#define PRIMITIVES_CASE(name) { \
PRIMITIVES_CASE_COMMON(name), \
@@ -158,6 +166,8 @@ static int duration = 0;
.e = 5, .f = 6, .g = 7, .h = 8, \
}, \
.output_len = sizeof(struct core_reloc_mods_output), \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_mods", \
}
#define PTR_AS_ARR_CASE(name) { \
@@ -174,6 +184,8 @@ static int duration = 0;
.a = 3, \
}, \
.output_len = sizeof(struct core_reloc_ptr_as_arr), \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_ptr_as_arr", \
}
#define INTS_DATA(struct_name) STRUCT_TO_CHAR_PTR(struct_name) { \
@@ -190,7 +202,9 @@ static int duration = 0;
#define INTS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_ints.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o"
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_ints"
#define INTS_CASE(name) { \
INTS_CASE_COMMON(name), \
@@ -208,7 +222,9 @@ static int duration = 0;
#define FIELD_EXISTS_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_existence.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o" \
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_existence"
#define BITFIELDS_CASE_COMMON(objfile, test_name_prefix, name) \
.case_name = test_name_prefix#name, \
@@ -223,6 +239,8 @@ static int duration = 0;
.output = STRUCT_TO_CHAR_PTR(core_reloc_bitfields_output) \
__VA_ARGS__, \
.output_len = sizeof(struct core_reloc_bitfields_output), \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_bitfields", \
}, { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_direct.o", \
"direct:", name), \
@@ -231,7 +249,7 @@ static int duration = 0;
.output = STRUCT_TO_CHAR_PTR(core_reloc_bitfields_output) \
__VA_ARGS__, \
.output_len = sizeof(struct core_reloc_bitfields_output), \
- .prog_sec_name = "tp_btf/sys_enter", \
+ .prog_name = "test_core_bitfields_direct", \
}
@@ -239,17 +257,21 @@ static int duration = 0;
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_probed.o", \
"probed:", name), \
.fails = true, \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_bitfields", \
}, { \
BITFIELDS_CASE_COMMON("test_core_reloc_bitfields_direct.o", \
"direct:", name), \
- .prog_sec_name = "tp_btf/sys_enter", \
.fails = true, \
+ .prog_name = "test_core_bitfields_direct", \
}
#define SIZE_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_size.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o"
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_size"
#define SIZE_OUTPUT_DATA(type) \
STRUCT_TO_CHAR_PTR(core_reloc_size_output) { \
@@ -277,8 +299,10 @@ static int duration = 0;
#define TYPE_BASED_CASE_COMMON(name) \
.case_name = #name, \
- .bpf_obj_file = "test_core_reloc_type_based.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o" \
+ .bpf_obj_file = "test_core_reloc_type_based.o", \
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_type_based"
#define TYPE_BASED_CASE(name, ...) { \
TYPE_BASED_CASE_COMMON(name), \
@@ -295,7 +319,9 @@ static int duration = 0;
#define TYPE_ID_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_type_id.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o" \
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_type_id"
#define TYPE_ID_CASE(name, setup_fn) { \
TYPE_ID_CASE_COMMON(name), \
@@ -312,7 +338,9 @@ static int duration = 0;
#define ENUMVAL_CASE_COMMON(name) \
.case_name = #name, \
.bpf_obj_file = "test_core_reloc_enumval.o", \
- .btf_src_file = "btf__core_reloc_" #name ".o" \
+ .btf_src_file = "btf__core_reloc_" #name ".o", \
+ .raw_tp_name = "sys_enter", \
+ .prog_name = "test_core_enumval"
#define ENUMVAL_CASE(name, ...) { \
ENUMVAL_CASE_COMMON(name), \
@@ -342,7 +370,7 @@ struct core_reloc_test_case {
bool fails;
bool needs_testmod;
bool relaxed_core_relocs;
- const char *prog_sec_name;
+ const char *prog_name;
const char *raw_tp_name;
setup_test_fn setup;
trigger_test_fn trigger;
@@ -497,11 +525,13 @@ static struct core_reloc_test_case test_cases[] = {
.comm_len = sizeof("test_progs"),
},
.output_len = sizeof(struct core_reloc_kernel_output),
+ .raw_tp_name = "sys_enter",
+ .prog_name = "test_core_kernel",
},
/* validate we can find kernel module BTF types for relocs/attach */
- MODULES_CASE("module_probed", "raw_tp/bpf_testmod_test_read", "bpf_testmod_test_read"),
- MODULES_CASE("module_direct", "tp_btf/bpf_testmod_test_read", NULL),
+ MODULES_CASE("module_probed", "test_core_module_probed", "bpf_testmod_test_read"),
+ MODULES_CASE("module_direct", "test_core_module_direct", NULL),
/* validate BPF program can use multiple flavors to match against
* single target BTF type
@@ -580,6 +610,8 @@ static struct core_reloc_test_case test_cases[] = {
.c = 0, /* BUG in clang, should be 3 */
},
.output_len = sizeof(struct core_reloc_misc_output),
+ .raw_tp_name = "sys_enter",
+ .prog_name = "test_core_misc",
},
/* validate field existence checks */
@@ -848,14 +880,9 @@ void test_core_reloc(void)
if (!ASSERT_OK_PTR(obj, "obj_open"))
goto cleanup;
- probe_name = "raw_tracepoint/sys_enter";
- tp_name = "sys_enter";
- if (test_case->prog_sec_name) {
- probe_name = test_case->prog_sec_name;
- tp_name = test_case->raw_tp_name; /* NULL for tp_btf */
- }
-
- prog = bpf_object__find_program_by_title(obj, probe_name);
+ probe_name = test_case->prog_name;
+ tp_name = test_case->raw_tp_name; /* NULL for tp_btf */
+ prog = bpf_object__find_program_by_name(obj, probe_name);
if (CHECK(!prog, "find_probe",
"prog '%s' not found\n", probe_name))
goto cleanup;
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
index fdd603ebda28..c52f99f6a909 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
@@ -101,6 +101,8 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
for (i = 0; i < prog_cnt; i++) {
struct bpf_link_info link_info;
+ struct bpf_program *pos;
+ const char *pos_sec_name;
char *tgt_name;
__s32 btf_id;
@@ -109,7 +111,14 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
goto close_prog;
btf_id = btf__find_by_name_kind(btf, tgt_name + 1, BTF_KIND_FUNC);
- prog[i] = bpf_object__find_program_by_title(obj, prog_name[i]);
+ prog[i] = NULL;
+ bpf_object__for_each_program(pos, obj) {
+ pos_sec_name = bpf_program__section_name(pos);
+ if (pos_sec_name && !strcmp(pos_sec_name, prog_name[i])) {
+ prog[i] = pos;
+ break;
+ }
+ }
if (!ASSERT_OK_PTR(prog[i], prog_name[i]))
goto close_prog;
@@ -211,8 +220,8 @@ static void test_func_replace_verify(void)
static int test_second_attach(struct bpf_object *obj)
{
- const char *prog_name = "freplace/get_constant";
- const char *tgt_name = prog_name + 9; /* cut off freplace/ */
+ const char *prog_name = "security_new_get_constant";
+ const char *tgt_name = "get_constant";
const char *tgt_obj_file = "./test_pkt_access.o";
struct bpf_program *prog = NULL;
struct bpf_object *tgt_obj;
@@ -220,7 +229,7 @@ static int test_second_attach(struct bpf_object *obj)
struct bpf_link *link;
int err = 0, tgt_fd;
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ prog = bpf_object__find_program_by_name(obj, prog_name);
if (CHECK(!prog, "find_prog", "prog %s not found\n", prog_name))
return -ENOENT;
diff --git a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
index 977ab433a946..e834a01de16a 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c
@@ -89,7 +89,7 @@ void test_get_stack_raw_tp(void)
{
const char *file = "./test_get_stack_rawtp.o";
const char *file_err = "./test_get_stack_rawtp_err.o";
- const char *prog_name = "raw_tracepoint/sys_enter";
+ const char *prog_name = "bpf_prog1";
int i, err, prog_fd, exp_cnt = MAX_CNT_RAWTP;
struct perf_buffer *pb = NULL;
struct bpf_link *link = NULL;
@@ -107,7 +107,7 @@ void test_get_stack_raw_tp(void)
if (CHECK(err, "prog_load raw tp", "err %d errno %d\n", err, errno))
return;
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ prog = bpf_object__find_program_by_name(obj, prog_name);
if (CHECK(!prog, "find_probe", "prog '%s' not found\n", prog_name))
goto close_prog;
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
index 6a953f4adfdc..8ed78a9383ba 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
@@ -136,7 +136,8 @@ static int start_server(void)
return fd;
}
-static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title)
+static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title,
+ const char *prog_name)
{
enum bpf_attach_type attach_type;
enum bpf_prog_type prog_type;
@@ -145,20 +146,20 @@ static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title)
err = libbpf_prog_type_by_name(title, &prog_type, &attach_type);
if (err) {
- log_err("Failed to deduct types for %s BPF program", title);
+ log_err("Failed to deduct types for %s BPF program", prog_name);
return -1;
}
- prog = bpf_object__find_program_by_title(obj, title);
+ prog = bpf_object__find_program_by_name(obj, prog_name);
if (!prog) {
- log_err("Failed to find %s BPF program", title);
+ log_err("Failed to find %s BPF program", prog_name);
return -1;
}
err = bpf_prog_attach(bpf_program__fd(prog), cgroup_fd,
attach_type, 0);
if (err) {
- log_err("Failed to attach %s BPF program", title);
+ log_err("Failed to attach %s BPF program", prog_name);
return -1;
}
@@ -181,11 +182,11 @@ static void run_test(int cgroup_fd)
if (!ASSERT_OK(err, "obj_load"))
goto close_bpf_object;
- err = prog_attach(obj, cgroup_fd, "cgroup/getsockopt");
+ err = prog_attach(obj, cgroup_fd, "cgroup/getsockopt", "_getsockopt");
if (CHECK_FAIL(err))
goto close_bpf_object;
- err = prog_attach(obj, cgroup_fd, "cgroup/setsockopt");
+ err = prog_attach(obj, cgroup_fd, "cgroup/setsockopt", "_setsockopt");
if (CHECK_FAIL(err))
goto close_bpf_object;
diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_map.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_map.c
index 337493d74ec5..313f0a66232e 100644
--- a/tools/testing/selftests/bpf/prog_tests/stacktrace_map.c
+++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_map.c
@@ -4,7 +4,7 @@
void test_stacktrace_map(void)
{
int control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd;
- const char *prog_name = "tracepoint/sched/sched_switch";
+ const char *prog_name = "oncpu";
int err, prog_fd, stack_trace_len;
const char *file = "./test_stacktrace_map.o";
__u32 key, val, duration = 0;
@@ -16,7 +16,7 @@ void test_stacktrace_map(void)
if (CHECK(err, "prog_load", "err %d errno %d\n", err, errno))
return;
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ prog = bpf_object__find_program_by_name(obj, prog_name);
if (CHECK(!prog, "find_prog", "prog '%s' not found\n", prog_name))
goto close_prog;
diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_map_raw_tp.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_map_raw_tp.c
index 063a14a2060d..1cb8dd36bd8f 100644
--- a/tools/testing/selftests/bpf/prog_tests/stacktrace_map_raw_tp.c
+++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_map_raw_tp.c
@@ -3,7 +3,7 @@
void test_stacktrace_map_raw_tp(void)
{
- const char *prog_name = "tracepoint/sched/sched_switch";
+ const char *prog_name = "oncpu";
int control_map_fd, stackid_hmap_fd, stackmap_fd;
const char *file = "./test_stacktrace_map.o";
__u32 key, val, duration = 0;
@@ -16,7 +16,7 @@ void test_stacktrace_map_raw_tp(void)
if (CHECK(err, "prog_load raw tp", "err %d errno %d\n", err, errno))
return;
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ prog = bpf_object__find_program_by_name(obj, prog_name);
if (CHECK(!prog, "find_prog", "prog '%s' not found\n", prog_name))
goto close_prog;
diff --git a/tools/testing/selftests/bpf/prog_tests/test_overhead.c b/tools/testing/selftests/bpf/prog_tests/test_overhead.c
index 123c68c1917d..05acb376f74d 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_overhead.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_overhead.c
@@ -56,11 +56,11 @@ static void setaffinity(void)
void test_test_overhead(void)
{
- const char *kprobe_name = "kprobe/__set_task_comm";
- const char *kretprobe_name = "kretprobe/__set_task_comm";
- const char *raw_tp_name = "raw_tp/task_rename";
- const char *fentry_name = "fentry/__set_task_comm";
- const char *fexit_name = "fexit/__set_task_comm";
+ const char *kprobe_name = "prog1";
+ const char *kretprobe_name = "prog2";
+ const char *raw_tp_name = "prog3";
+ const char *fentry_name = "prog4";
+ const char *fexit_name = "prog5";
const char *kprobe_func = "__set_task_comm";
struct bpf_program *kprobe_prog, *kretprobe_prog, *raw_tp_prog;
struct bpf_program *fentry_prog, *fexit_prog;
@@ -76,23 +76,23 @@ void test_test_overhead(void)
if (!ASSERT_OK_PTR(obj, "obj_open_file"))
return;
- kprobe_prog = bpf_object__find_program_by_title(obj, kprobe_name);
+ kprobe_prog = bpf_object__find_program_by_name(obj, kprobe_name);
if (CHECK(!kprobe_prog, "find_probe",
"prog '%s' not found\n", kprobe_name))
goto cleanup;
- kretprobe_prog = bpf_object__find_program_by_title(obj, kretprobe_name);
+ kretprobe_prog = bpf_object__find_program_by_name(obj, kretprobe_name);
if (CHECK(!kretprobe_prog, "find_probe",
"prog '%s' not found\n", kretprobe_name))
goto cleanup;
- raw_tp_prog = bpf_object__find_program_by_title(obj, raw_tp_name);
+ raw_tp_prog = bpf_object__find_program_by_name(obj, raw_tp_name);
if (CHECK(!raw_tp_prog, "find_probe",
"prog '%s' not found\n", raw_tp_name))
goto cleanup;
- fentry_prog = bpf_object__find_program_by_title(obj, fentry_name);
+ fentry_prog = bpf_object__find_program_by_name(obj, fentry_name);
if (CHECK(!fentry_prog, "find_probe",
"prog '%s' not found\n", fentry_name))
goto cleanup;
- fexit_prog = bpf_object__find_program_by_title(obj, fexit_name);
+ fexit_prog = bpf_object__find_program_by_name(obj, fexit_name);
if (CHECK(!fexit_prog, "find_probe",
"prog '%s' not found\n", fexit_name))
goto cleanup;
diff --git a/tools/testing/selftests/bpf/prog_tests/trampoline_count.c b/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
index fc146671b20a..9c795ee52b7b 100644
--- a/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
+++ b/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
@@ -35,7 +35,7 @@ static struct bpf_link *load(struct bpf_object *obj, const char *name)
struct bpf_program *prog;
int duration = 0;
- prog = bpf_object__find_program_by_title(obj, name);
+ prog = bpf_object__find_program_by_name(obj, name);
if (CHECK(!prog, "find_probe", "prog '%s' not found\n", name))
return ERR_PTR(-EINVAL);
return bpf_program__attach_trace(prog);
@@ -44,8 +44,8 @@ static struct bpf_link *load(struct bpf_object *obj, const char *name)
/* TODO: use different target function to run in concurrent mode */
void serial_test_trampoline_count(void)
{
- const char *fentry_name = "fentry/__set_task_comm";
- const char *fexit_name = "fexit/__set_task_comm";
+ const char *fentry_name = "prog1";
+ const char *fexit_name = "prog2";
const char *object = "test_trampoline_count.o";
struct inst inst[MAX_TRAMP_PROGS] = {};
int err, i = 0, duration = 0;
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 bpf-next 2/4] samples/bpf: Stop using bpf_object__find_program_by_title API.
2022-01-10 22:34 [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 1/4] selftests/bpf: " Kui-Feng Lee
@ 2022-01-10 22:34 ` Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 3/4] tools/perf: " Kui-Feng Lee
2022-01-10 22:45 ` [PATCH v4 bpf-next 0/4] " Kui-Feng Lee
3 siblings, 0 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2022-01-10 22:34 UTC (permalink / raw)
To: bpf, ast, daniel, andrii; +Cc: Kui-Feng Lee
bpf_object__find_program_by_title is going to be deprecated.
Replace use cases of bpf_object__find_program_by_title in samples/bpf/
with bpf_object__for_each_program.
Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
---
samples/bpf/hbm.c | 11 ++++++++++-
samples/bpf/xdp_fwd_user.c | 12 ++++++++++--
2 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c
index b0c18efe7928..1fe5bcafb3bc 100644
--- a/samples/bpf/hbm.c
+++ b/samples/bpf/hbm.c
@@ -120,6 +120,9 @@ static void do_error(char *msg, bool errno_flag)
static int prog_load(char *prog)
{
+ struct bpf_program *pos;
+ const char *sec_name;
+
obj = bpf_object__open_file(prog, NULL);
if (libbpf_get_error(obj)) {
printf("ERROR: opening BPF object file failed\n");
@@ -132,7 +135,13 @@ static int prog_load(char *prog)
goto err;
}
- bpf_prog = bpf_object__find_program_by_title(obj, "cgroup_skb/egress");
+ bpf_object__for_each_program(pos, obj) {
+ sec_name = bpf_program__section_name(pos);
+ if (sec_name && !strcmp(sec_name, "cgroup_skb/egress")) {
+ bpf_prog = pos;
+ break;
+ }
+ }
if (!bpf_prog) {
printf("ERROR: finding a prog in obj file failed\n");
goto err;
diff --git a/samples/bpf/xdp_fwd_user.c b/samples/bpf/xdp_fwd_user.c
index 00061261a8da..4ad896782f77 100644
--- a/samples/bpf/xdp_fwd_user.c
+++ b/samples/bpf/xdp_fwd_user.c
@@ -79,7 +79,9 @@ int main(int argc, char **argv)
.prog_type = BPF_PROG_TYPE_XDP,
};
const char *prog_name = "xdp_fwd";
- struct bpf_program *prog;
+ struct bpf_program *prog = NULL;
+ struct bpf_program *pos;
+ const char *sec_name;
int prog_fd, map_fd = -1;
char filename[PATH_MAX];
struct bpf_object *obj;
@@ -134,7 +136,13 @@ int main(int argc, char **argv)
return 1;
}
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ bpf_object__for_each_program(pos, obj) {
+ sec_name = bpf_program__section_name(pos);
+ if (sec_name && !strcmp(sec_name, prog_name)) {
+ prog = pos;
+ break;
+ }
+ }
prog_fd = bpf_program__fd(prog);
if (prog_fd < 0) {
printf("program not found: %s\n", strerror(prog_fd));
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 bpf-next 3/4] tools/perf: Stop using bpf_object__find_program_by_title API.
2022-01-10 22:34 [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 1/4] selftests/bpf: " Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 2/4] samples/bpf: " Kui-Feng Lee
@ 2022-01-10 22:34 ` Kui-Feng Lee
2022-01-10 22:45 ` [PATCH v4 bpf-next 0/4] " Kui-Feng Lee
3 siblings, 0 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2022-01-10 22:34 UTC (permalink / raw)
To: bpf, ast, daniel, andrii; +Cc: Kui-Feng Lee
bpf_obj__find_program_by_title() in libbpf is going to be deprecated.
Call bpf_object_for_each_program to find a program in the section with
a given name instead.
Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
---
tools/perf/builtin-trace.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 624ea12ce5ca..7c7278e434a0 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -3253,10 +3253,21 @@ static void trace__set_bpf_map_syscalls(struct trace *trace)
static struct bpf_program *trace__find_bpf_program_by_title(struct trace *trace, const char *name)
{
+ struct bpf_program *pos, *prog = NULL;
+ const char *sec_name;
+
if (trace->bpf_obj == NULL)
return NULL;
- return bpf_object__find_program_by_title(trace->bpf_obj, name);
+ bpf_object__for_each_program(pos, trace->bpf_obj) {
+ sec_name = bpf_program__section_name(pos);
+ if (sec_name && !strcmp(sec_name, name)) {
+ prog = pos;
+ break;
+ }
+ }
+
+ return prog;
}
static struct bpf_program *trace__find_syscall_bpf_prog(struct trace *trace, struct syscall *sc,
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API
2022-01-10 22:34 [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API Kui-Feng Lee
` (2 preceding siblings ...)
2022-01-10 22:34 ` [PATCH v4 bpf-next 3/4] tools/perf: " Kui-Feng Lee
@ 2022-01-10 22:45 ` Kui-Feng Lee
3 siblings, 0 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2022-01-10 22:45 UTC (permalink / raw)
To: bpf, ast, daniel, andrii
Sorry for sending these patches again. It is a mistake!
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v4 bpf-next 2/4] samples/bpf: Stop using bpf_object__find_program_by_title API.
2021-12-14 3:59 Kui-Feng Lee
@ 2021-12-14 3:59 ` Kui-Feng Lee
0 siblings, 0 replies; 6+ messages in thread
From: Kui-Feng Lee @ 2021-12-14 3:59 UTC (permalink / raw)
To: bpf, ast, daniel, andrii; +Cc: Kui-Feng Lee
bpf_object__find_program_by_title is going to be deprecated.
Replace use cases of bpf_object__find_program_by_title in samples/bpf/
with bpf_object__for_each_program.
Signed-off-by: Kui-Feng Lee <kuifeng@fb.com>
---
samples/bpf/hbm.c | 11 ++++++++++-
samples/bpf/xdp_fwd_user.c | 12 ++++++++++--
2 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/samples/bpf/hbm.c b/samples/bpf/hbm.c
index b0c18efe7928..1fe5bcafb3bc 100644
--- a/samples/bpf/hbm.c
+++ b/samples/bpf/hbm.c
@@ -120,6 +120,9 @@ static void do_error(char *msg, bool errno_flag)
static int prog_load(char *prog)
{
+ struct bpf_program *pos;
+ const char *sec_name;
+
obj = bpf_object__open_file(prog, NULL);
if (libbpf_get_error(obj)) {
printf("ERROR: opening BPF object file failed\n");
@@ -132,7 +135,13 @@ static int prog_load(char *prog)
goto err;
}
- bpf_prog = bpf_object__find_program_by_title(obj, "cgroup_skb/egress");
+ bpf_object__for_each_program(pos, obj) {
+ sec_name = bpf_program__section_name(pos);
+ if (sec_name && !strcmp(sec_name, "cgroup_skb/egress")) {
+ bpf_prog = pos;
+ break;
+ }
+ }
if (!bpf_prog) {
printf("ERROR: finding a prog in obj file failed\n");
goto err;
diff --git a/samples/bpf/xdp_fwd_user.c b/samples/bpf/xdp_fwd_user.c
index 00061261a8da..4ad896782f77 100644
--- a/samples/bpf/xdp_fwd_user.c
+++ b/samples/bpf/xdp_fwd_user.c
@@ -79,7 +79,9 @@ int main(int argc, char **argv)
.prog_type = BPF_PROG_TYPE_XDP,
};
const char *prog_name = "xdp_fwd";
- struct bpf_program *prog;
+ struct bpf_program *prog = NULL;
+ struct bpf_program *pos;
+ const char *sec_name;
int prog_fd, map_fd = -1;
char filename[PATH_MAX];
struct bpf_object *obj;
@@ -134,7 +136,13 @@ int main(int argc, char **argv)
return 1;
}
- prog = bpf_object__find_program_by_title(obj, prog_name);
+ bpf_object__for_each_program(pos, obj) {
+ sec_name = bpf_program__section_name(pos);
+ if (sec_name && !strcmp(sec_name, prog_name)) {
+ prog = pos;
+ break;
+ }
+ }
prog_fd = bpf_program__fd(prog);
if (prog_fd < 0) {
printf("program not found: %s\n", strerror(prog_fd));
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-01-10 22:45 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2022-01-10 22:34 [PATCH v4 bpf-next 0/4] Stop using bpf_object__find_program_by_title API Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 1/4] selftests/bpf: " Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 2/4] samples/bpf: " Kui-Feng Lee
2022-01-10 22:34 ` [PATCH v4 bpf-next 3/4] tools/perf: " Kui-Feng Lee
2022-01-10 22:45 ` [PATCH v4 bpf-next 0/4] " Kui-Feng Lee
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2021-12-14 3:59 Kui-Feng Lee
2021-12-14 3:59 ` [PATCH v4 bpf-next 2/4] samples/bpf: " Kui-Feng Lee
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