On Thu, Dec 5, 2024 at 9:35 AM Thomas Weißschuh <linux@xxxxxxxxxxxxxx> wrote: > > The generic function from the sysfs core can replace the custom one. > > Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx> > > --- > This is a replacement for [0], as Alexei was not happy about BIN_ATTR_SIMPLE_RO() > > [0] https://lore.kernel.org/lkml/20241122-sysfs-const-bin_attr-bpf-v1-1-823aea399b53@xxxxxxxxxxxxxx/ > --- > kernel/bpf/sysfs_btf.c | 12 ++---------- > 1 file changed, 2 insertions(+), 10 deletions(-) > Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx> > diff --git a/kernel/bpf/sysfs_btf.c b/kernel/bpf/sysfs_btf.c > index fedb54c94cdb830a4890d33677dcc5a6e236c13f..81d6cf90584a7157929c50f62a5c6862e7a3d081 100644 > --- a/kernel/bpf/sysfs_btf.c > +++ b/kernel/bpf/sysfs_btf.c > @@ -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) > > -- > 2.47.1 >
