119 	struct __bpf_usdt_arg_spec *arg_spec;  in bpf_usdt_arg()  local
139 	arg_spec = &spec->args[arg_num];  in bpf_usdt_arg()
140 	switch (arg_spec->arg_type) {  in bpf_usdt_arg()
145 		val = arg_spec->val_off;  in bpf_usdt_arg()
153 		err = bpf_probe_read_kernel(&val, sizeof(val), (void *)ctx + arg_spec->reg_off);  in bpf_usdt_arg()
165 		err = bpf_probe_read_kernel(&val, sizeof(val), (void *)ctx + arg_spec->reg_off);  in bpf_usdt_arg()
168 		err = bpf_probe_read_user(&val, sizeof(val), (void *)val + arg_spec->val_off);  in bpf_usdt_arg()
172 		val >>= arg_spec->arg_bitshift;  in bpf_usdt_arg()
183 	val <<= arg_spec->arg_bitshift;  in bpf_usdt_arg()
184 	if (arg_spec->arg_signed)  in bpf_usdt_arg()
185 		val = ((long)val) >> arg_spec->arg_bitshift;  in bpf_usdt_arg()
187 		val = val >> arg_spec->arg_bitshift;  in bpf_usdt_arg()