From a108f7dcfa010e3da825af90d77ac0a6a0240992 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 12 Mar 2020 20:56:05 +0100 Subject: bpf: Add trampolines to kallsyms Adding trampolines to kallsyms. It's displayed as bpf_trampoline_ [bpf] where ID is the BTF id of the trampoline function. Adding bpf_image_ksym_add/del functions that setup the start/end values and call KSYMBOL perf events handlers. Signed-off-by: Jiri Olsa Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200312195610.346362-11-jolsa@kernel.org Signed-off-by: Alexei Starovoitov --- include/linux/bpf.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bpf.h b/include/linux/bpf.h index ec1de88b8487..083860be1944 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -513,6 +513,7 @@ struct bpf_trampoline { /* Executable image of trampoline */ void *image; u64 selector; + struct bpf_ksym ksym; }; #define BPF_DISPATCHER_MAX 48 /* Fits in 2048B */ @@ -585,6 +586,8 @@ struct bpf_image { bool is_bpf_image_address(unsigned long address); void *bpf_image_alloc(void); /* Called only from JIT-enabled code, so there's no need for stubs. */ +void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym); +void bpf_image_ksym_del(struct bpf_ksym *ksym); void bpf_ksym_add(struct bpf_ksym *ksym); void bpf_ksym_del(struct bpf_ksym *ksym); #else -- cgit v1.2.3