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-rw-r--r--kernel/bpf/btf.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 5fcc7a17eb5a..adb3adcebe3c 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -195,8 +195,8 @@
i < btf_type_vlen(struct_type); \
i++, member++)
-static DEFINE_IDR(btf_idr);
-static DEFINE_SPINLOCK(btf_idr_lock);
+DEFINE_IDR(btf_idr);
+DEFINE_SPINLOCK(btf_idr_lock);
struct btf {
void *data;
@@ -3376,6 +3376,15 @@ void btf_type_seq_show(const struct btf *btf, u32 type_id, void *obj,
btf_type_ops(t)->seq_show(btf, t, type_id, obj, 0, m);
}
+#ifdef CONFIG_PROC_FS
+static void bpf_btf_show_fdinfo(struct seq_file *m, struct file *filp)
+{
+ const struct btf *btf = filp->private_data;
+
+ seq_printf(m, "btf_id:\t%u\n", btf->id);
+}
+#endif
+
static int btf_release(struct inode *inode, struct file *filp)
{
btf_put(filp->private_data);
@@ -3383,6 +3392,9 @@ static int btf_release(struct inode *inode, struct file *filp)
}
const struct file_operations btf_fops = {
+#ifdef CONFIG_PROC_FS
+ .show_fdinfo = bpf_btf_show_fdinfo,
+#endif
.release = btf_release,
};