diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/fill_link_info.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/fill_link_info.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c index d50cbd8040d4..e40114620751 100644 --- a/tools/testing/selftests/bpf/prog_tests/fill_link_info.c +++ b/tools/testing/selftests/bpf/prog_tests/fill_link_info.c @@ -37,6 +37,7 @@ static noinline void uprobe_func(void) static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long addr, ssize_t offset, ssize_t entry_offset) { + ssize_t ref_ctr_offset = entry_offset /* ref_ctr_offset for uprobes */; struct bpf_link_info info; __u32 len = sizeof(info); char buf[PATH_MAX]; @@ -97,6 +98,7 @@ again: case BPF_PERF_EVENT_UPROBE: case BPF_PERF_EVENT_URETPROBE: ASSERT_EQ(info.perf_event.uprobe.offset, offset, "uprobe_offset"); + ASSERT_EQ(info.perf_event.uprobe.ref_ctr_offset, ref_ctr_offset, "uprobe_ref_ctr_offset"); ASSERT_EQ(info.perf_event.uprobe.name_len, strlen(UPROBE_FILE) + 1, "name_len"); @@ -171,6 +173,10 @@ static void test_kprobe_fill_link_info(struct test_fill_link_info *skel, /* See also arch_adjust_kprobe_addr(). */ if (skel->kconfig->CONFIG_X86_KERNEL_IBT) entry_offset = 4; + if (skel->kconfig->CONFIG_PPC64 && + skel->kconfig->CONFIG_KPROBES_ON_FTRACE && + !skel->kconfig->CONFIG_PPC_FTRACE_OUT_OF_LINE) + entry_offset = 4; err = verify_perf_link_info(link_fd, type, kprobe_addr, 0, entry_offset); ASSERT_OK(err, "verify_perf_link_info"); } else { @@ -237,20 +243,32 @@ static void test_uprobe_fill_link_info(struct test_fill_link_info *skel, .retprobe = type == BPF_PERF_EVENT_URETPROBE, .bpf_cookie = PERF_EVENT_COOKIE, ); + const char *sema[1] = { + "uprobe_link_info_sema_1", + }; + __u64 *ref_ctr_offset; struct bpf_link *link; int link_fd, err; + err = elf_resolve_syms_offsets("/proc/self/exe", 1, sema, + (unsigned long **) &ref_ctr_offset, STT_OBJECT); + if (!ASSERT_OK(err, "elf_resolve_syms_offsets_object")) + return; + + opts.ref_ctr_offset = *ref_ctr_offset; link = bpf_program__attach_uprobe_opts(skel->progs.uprobe_run, 0, /* self pid */ UPROBE_FILE, uprobe_offset, &opts); if (!ASSERT_OK_PTR(link, "attach_uprobe")) - return; + goto out; link_fd = bpf_link__fd(link); - err = verify_perf_link_info(link_fd, type, 0, uprobe_offset, 0); + err = verify_perf_link_info(link_fd, type, 0, uprobe_offset, *ref_ctr_offset); ASSERT_OK(err, "verify_perf_link_info"); bpf_link__destroy(link); +out: + free(ref_ctr_offset); } static int verify_kmulti_link_info(int fd, bool retprobe, bool has_cookies) |