Commit 75711e28 authored by Lu Jialin's avatar Lu Jialin Committed by Zheng Zengkai
Browse files

kabi: reserve space for cgroup bpf structures 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4GII8?from=project-issue


CVE: NA

--------

We reserve some fields beforehand for cgroup bpf structures prone to change,
therefore, we can hot add/change features of bpf cgroup with this enhancement.

After reserving, normally cache does not matter as the reserved fields
are not accessed at all.

Signed-off-by: default avatarLu Jialin <lujialin4@huawei.com>
Reviewed-by: default avatarweiyang wang <wangweiyang2@huawei.com>
Reviewed-by: default avatarXiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 7ef131ba

include/linux/bpf-cgroup.h

+18 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/percpu-refcount.h>

#include <linux/rbtree.h>

#include <uapi/linux/bpf.h>

#include <linux/kabi.h>



struct sock;

struct sockaddr;
@@ -88,6 +89,23 @@ struct cgroup_bpf { 


	/* cgroup_bpf is released using a work queue */

	struct work_struct release_work;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

	KABI_RESERVE(9)

	KABI_RESERVE(10)

	KABI_RESERVE(11)

	KABI_RESERVE(12)

	KABI_RESERVE(13)

	KABI_RESERVE(14)

	KABI_RESERVE(15)

	KABI_RESERVE(16)

};



int cgroup_bpf_inherit(struct cgroup *cgrp);