From b23316aabffa835ecc516cb81daeef5b9155e8a5 Mon Sep 17 00:00:00 2001 From: Yuntao Wang Date: Thu, 19 May 2022 23:06:10 +0800 Subject: selftests/bpf: Add missing trampoline program type to trampoline_count test Currently the trampoline_count test doesn't include any fmod_ret bpf programs, fix it to make the test cover all possible trampoline program types. Since fmod_ret bpf programs can't be attached to __set_task_comm function, as it's neither whitelisted for error injection nor a security hook, change it to bpf_modify_return_test. This patch also does some other cleanups such as removing duplicate code, dropping inconsistent comments, etc. Signed-off-by: Yuntao Wang Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20220519150610.601313-1-ytcoode@gmail.com --- include/linux/bpf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bpf.h b/include/linux/bpf.h index a3ef078401cf..cc4d5e394031 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -724,7 +724,7 @@ struct btf_func_model { #define BPF_TRAMP_F_RET_FENTRY_RET BIT(4) /* Each call __bpf_prog_enter + call bpf_func + call __bpf_prog_exit is ~50 - * bytes on x86. Pick a number to fit into BPF_IMAGE_SIZE / 2 + * bytes on x86. */ #define BPF_MAX_TRAMP_LINKS 38 -- cgit