diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/linked_funcs2.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/linked_funcs2.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/progs/linked_funcs2.c b/tools/testing/selftests/bpf/progs/linked_funcs2.c index 575e958e60b7..ee7e3848ee4f 100644 --- a/tools/testing/selftests/bpf/progs/linked_funcs2.c +++ b/tools/testing/selftests/bpf/progs/linked_funcs2.c @@ -4,6 +4,7 @@ #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> +#include <bpf/bpf_core_read.h> /* weak and shared between both files */ const volatile int my_tid __weak; @@ -44,6 +45,13 @@ void set_output_ctx2(__u64 *ctx) /* this weak instance should lose, because it will be processed second */ __weak int set_output_weak(int x) { + static volatile int whatever; + + /* make sure we use CO-RE relocations in a weak function, this used to + * cause problems for BPF static linker + */ + whatever = 2 * bpf_core_type_size(struct task_struct); + output_weak2 = x; return 2 * x; } @@ -53,12 +61,17 @@ extern int set_output_val1(int x); /* here we'll force set_output_ctx1() to be __hidden in the final obj file */ __hidden extern void set_output_ctx1(__u64 *ctx); -SEC("raw_tp/sys_enter") +SEC("?raw_tp/sys_enter") int BPF_PROG(handler2, struct pt_regs *regs, long id) { + static volatile int whatever; + if (my_tid != (u32)bpf_get_current_pid_tgid() || id != syscall_id) return 0; + /* make sure we have CO-RE relocations in main program */ + whatever = bpf_core_type_size(struct task_struct); + set_output_val1(2000); set_output_ctx1(ctx); /* ctx definition is hidden in BPF_PROG macro */ |