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| author | Jiri Olsa <jolsa@kernel.org> | 2020-03-12 20:56:05 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-03-13 20:49:52 +0100 |
| commit | a108f7dcfa010e3da825af90d77ac0a6a0240992 (patch) | |
| tree | 620c483c6d3e73da1b2d46ff3cd2d4fd3bfe26aa /include | |
| parent | bpf: Add bpf_ksym_add/del functions (diff) | |
| download | linux-a108f7dcfa010e3da825af90d77ac0a6a0240992.tar.xz linux-a108f7dcfa010e3da825af90d77ac0a6a0240992.zip | |
bpf: Add trampolines to kallsyms
Adding trampolines to kallsyms. It's displayed as
bpf_trampoline_<ID> [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 <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200312195610.346362-11-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 3 |
1 files changed, 3 insertions, 0 deletions
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 |