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btf: Switch module BTF attribute to sysfs_bin_attr_simple_read()

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

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20241228-sysfs-const-bin_attr-simple-v2-3-7c6f3f1767a3@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Weißschuh 2024-12-28 09:43:43 +01:00 committed by Greg Kroah-Hartman
parent 42369b9a1e
commit 18032c6bc0
1 changed files with 2 additions and 13 deletions
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15
kernel/bpf/btf.c
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@ -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) {