Commit 18032c6b authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Greg Kroah-Hartman
Browse files

btf: Switch module BTF attribute to sysfs_bin_attr_simple_read() 



The generic function from the sysfs core can replace the custom one.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20241228-sysfs-const-bin_attr-simple-v2-3-7c6f3f1767a3@weissschuh.net


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 42369b9a

kernel/bpf/btf.c

+2 −13
Original line number Diff line number Diff line
@@ -8011,17 +8011,6 @@ struct btf_module { 
static LIST_HEAD(btf_modules);

static DEFINE_MUTEX(btf_module_mutex);



static ssize_t

btf_module_read(struct file *file, struct kobject *kobj,

		struct bin_attribute *bin_attr,

		char *buf, loff_t off, size_t len)

{

	const struct btf *btf = bin_attr->private;



	memcpy(buf, btf->data + off, len);

	return len;

}



static void purge_cand_cache(struct btf *btf);



static int btf_module_notify(struct notifier_block *nb, unsigned long op,
@@ -8082,8 +8071,8 @@ static int btf_module_notify(struct notifier_block *nb, unsigned long op, 
			attr->attr.name = btf->name;

			attr->attr.mode = 0444;

			attr->size = btf->data_size;

			attr->private = btf;

			attr->read = btf_module_read;

			attr->private = btf->data;

			attr->read_new = sysfs_bin_attr_simple_read;



			err = sysfs_create_bin_file(btf_kobj, attr);

			if (err) {