diff options
| author | Martin KaFai Lau <martin.lau@kernel.org> | 2022-10-25 21:45:20 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-10-26 09:11:46 +0300 |
| commit | 4279adb094a17132423f1271c3d11b593fc2327e (patch) | |
| tree | 0601ed0271392f68e41f4672f63565bf27df3989 /include | |
| parent | e8b02296a6b8d07de752d6157d863a642117bcd3 (diff) | |
| download | linux-4279adb094a17132423f1271c3d11b593fc2327e.tar.xz | |
bpf: Add new bpf_task_storage_get proto with no deadlock detection
The bpf_lsm and bpf_iter do not recur that will cause a deadlock.
The situation is similar to the bpf_pid_task_storage_lookup_elem()
which is called from the syscall map_lookup_elem. It does not need
deadlock detection. Otherwise, it will cause unnecessary failure
when calling the bpf_task_storage_get() helper.
This patch adds bpf_task_storage_get proto that does not do deadlock
detection. It will be used by bpf_lsm and bpf_iter programs.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20221025184524.3526117-6-martin.lau@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index b04fe3f4342e..ef3f98afa45d 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -2520,6 +2520,7 @@ extern const struct bpf_func_proto bpf_ktime_get_coarse_ns_proto; extern const struct bpf_func_proto bpf_sock_from_file_proto; extern const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto; extern const struct bpf_func_proto bpf_task_storage_get_recur_proto; +extern const struct bpf_func_proto bpf_task_storage_get_proto; extern const struct bpf_func_proto bpf_task_storage_delete_recur_proto; extern const struct bpf_func_proto bpf_for_each_map_elem_proto; extern const struct bpf_func_proto bpf_btf_find_by_name_kind_proto; |