mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 06:36:44 +07:00
7179e7bf45
Build kernel with CONFIG_HUGETLBFS=y,CONFIG_HUGETLB_PAGE=y and
CONFIG_CGROUP_HUGETLB=y, then specify hugepagesz=xx boot option, system
will fail to boot.
This failure is caused by following code path:
setup_hugepagesz
hugetlb_add_hstate
hugetlb_cgroup_file_init
cgroup_add_cftypes
kzalloc <--slab is *not available* yet
For this path, slab is not available yet, so memory allocated will be
failed, and cause WARN_ON() in hugetlb_cgroup_file_init().
So I move hugetlb_cgroup_file_init() into hugetlb_init().
[akpm@linux-foundation.org: tweak coding-style, remove pointless __init on inlined function]
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
126 lines
3.0 KiB
C
126 lines
3.0 KiB
C
/*
|
|
* Copyright IBM Corporation, 2012
|
|
* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2.1 of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
*/
|
|
|
|
#ifndef _LINUX_HUGETLB_CGROUP_H
|
|
#define _LINUX_HUGETLB_CGROUP_H
|
|
|
|
#include <linux/res_counter.h>
|
|
|
|
struct hugetlb_cgroup;
|
|
/*
|
|
* Minimum page order trackable by hugetlb cgroup.
|
|
* At least 3 pages are necessary for all the tracking information.
|
|
*/
|
|
#define HUGETLB_CGROUP_MIN_ORDER 2
|
|
|
|
#ifdef CONFIG_CGROUP_HUGETLB
|
|
|
|
static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page)
|
|
{
|
|
VM_BUG_ON(!PageHuge(page));
|
|
|
|
if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER)
|
|
return NULL;
|
|
return (struct hugetlb_cgroup *)page[2].lru.next;
|
|
}
|
|
|
|
static inline
|
|
int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg)
|
|
{
|
|
VM_BUG_ON(!PageHuge(page));
|
|
|
|
if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER)
|
|
return -1;
|
|
page[2].lru.next = (void *)h_cg;
|
|
return 0;
|
|
}
|
|
|
|
static inline bool hugetlb_cgroup_disabled(void)
|
|
{
|
|
if (hugetlb_subsys.disabled)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup **ptr);
|
|
extern void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup *h_cg,
|
|
struct page *page);
|
|
extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages,
|
|
struct page *page);
|
|
extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup *h_cg);
|
|
extern void hugetlb_cgroup_file_init(void) __init;
|
|
extern void hugetlb_cgroup_migrate(struct page *oldhpage,
|
|
struct page *newhpage);
|
|
|
|
#else
|
|
static inline struct hugetlb_cgroup *hugetlb_cgroup_from_page(struct page *page)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline
|
|
int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool hugetlb_cgroup_disabled(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline int
|
|
hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup **ptr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup *h_cg,
|
|
struct page *page)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void
|
|
hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void
|
|
hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
|
|
struct hugetlb_cgroup *h_cg)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void hugetlb_cgroup_file_init(void)
|
|
{
|
|
}
|
|
|
|
static inline void hugetlb_cgroup_migrate(struct page *oldhpage,
|
|
struct page *newhpage)
|
|
{
|
|
return;
|
|
}
|
|
|
|
#endif /* CONFIG_MEM_RES_CTLR_HUGETLB */
|
|
#endif
|