Commit 42369b9a authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Greg Kroah-Hartman
Browse files

btf: Switch vmlinux 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-v2-2-7c6f3f1767a3@weissschuh.net


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3675a926

kernel/bpf/sysfs_btf.c

+2 −10
Original line number Diff line number Diff line
@@ -12,24 +12,16 @@ 
extern char __start_BTF[];

extern char __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;

}



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,

};



struct kobject *btf_kobj;



static int __init btf_vmlinux_init(void)

{

	bin_attr_btf_vmlinux.private = __start_BTF;

	bin_attr_btf_vmlinux.size = __stop_BTF - __start_BTF;



	if (bin_attr_btf_vmlinux.size == 0)