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| author | Alexei Starovoitov <ast@kernel.org> | 2024-11-13 04:13:47 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-11-13 04:13:53 +0300 |
| commit | faadc69af1ef68f2820fc29c874a42f1da2685f9 (patch) | |
| tree | 95862d4f58f52335bff96e6e2e04e279043c5284 /include/linux/bpf.h | |
| parent | c1bc51f85cd6be28a4ec901b358731550a203bb2 (diff) | |
| parent | 7c8ce4ffb684676039b1ff9ff81c126794e8d88e (diff) | |
| download | linux-faadc69af1ef68f2820fc29c874a42f1da2685f9.tar.xz | |
Merge branch 'add-kernel-symbol-for-struct_ops-trampoline'
Xu Kuohai says:
====================
Add kernel symbol for struct_ops trampoline.
Without kernel symbol for struct_ops trampoline, the unwinder may
produce unexpected stacktraces. For example, the x86 ORC and FP
unwinder stops stacktrace on a struct_ops trampoline address since
there is no kernel symbol for the address.
v4:
- Add a separate cleanup patch to remove unused member rcu from
bpf_struct_ops_map (patch 1)
- Use funcs_cnt instead of btf_type_vlen(vt) for links memory
calculation in .map_mem_usage (patch 2)
- Include ksyms[] memory in map_mem_usage (patch 3)
- Various fixes in patch 3 (Thanks to Martin)
v3: https://lore.kernel.org/bpf/20241111121641.2679885-1-xukuohai@huaweicloud.com/
- Add a separate cleanup patch to replace links_cnt with funcs_cnt
- Allocate ksyms on-demand in update_elem() to stay with the links
allocation way
- Set ksym name to prog__<struct_ops_name>_<member_name>
v2: https://lore.kernel.org/bpf/20241101111948.1570547-1-xukuohai@huaweicloud.com/
- Refine the commit message for clarity and fix a test bot warning
v1: https://lore.kernel.org/bpf/20241030111533.907289-1-xukuohai@huaweicloud.com/
====================
Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20241112145849.3436772-1-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 10945c8858ce..3ace0d6227e3 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1402,7 +1402,8 @@ int arch_prepare_bpf_dispatcher(void *image, void *buf, s64 *funcs, int num_func void bpf_dispatcher_change_prog(struct bpf_dispatcher *d, struct bpf_prog *from, struct bpf_prog *to); /* Called only from JIT-enabled code, so there's no need for stubs. */ -void bpf_image_ksym_add(void *data, unsigned int size, struct bpf_ksym *ksym); +void bpf_image_ksym_init(void *data, unsigned int size, struct bpf_ksym *ksym); +void bpf_image_ksym_add(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); |