diff options
Diffstat (limited to 'kernel/bpf/sysfs_btf.c')
| -rw-r--r-- | kernel/bpf/sysfs_btf.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/kernel/bpf/sysfs_btf.c b/kernel/bpf/sysfs_btf.c index 3b495773de5a..81d6cf90584a 100644 --- a/kernel/bpf/sysfs_btf.c +++ b/kernel/bpf/sysfs_btf.c @@ -9,36 +9,28 @@ #include <linux/sysfs.h> /* See scripts/link-vmlinux.sh, gen_btf() func for details */ -extern char __weak __start_BTF[]; -extern char __weak __stop_BTF[]; - -static ssize_t -btf_vmlinux_read(struct file *file, struct kobject *kobj, - struct bin_attribute *bin_attr, - char *buf, loff_t off, size_t len) -{ - memcpy(buf, __start_BTF + off, len); - return len; -} +extern char __start_BTF[]; +extern char __stop_BTF[]; static struct bin_attribute bin_attr_btf_vmlinux __ro_after_init = { .attr = { .name = "vmlinux", .mode = 0444, }, - .read = btf_vmlinux_read, + .read_new = sysfs_bin_attr_simple_read, }; -static struct kobject *btf_kobj; +struct kobject *btf_kobj; static int __init btf_vmlinux_init(void) { - if (!__start_BTF) + bin_attr_btf_vmlinux.private = __start_BTF; + bin_attr_btf_vmlinux.size = __stop_BTF - __start_BTF; + + if (bin_attr_btf_vmlinux.size == 0) return 0; btf_kobj = kobject_create_and_add("btf", kernel_kobj); if (!btf_kobj) return -ENOMEM; - bin_attr_btf_vmlinux.size = __stop_BTF - __start_BTF; - return sysfs_create_bin_file(btf_kobj, &bin_attr_btf_vmlinux); } |