cregit-Linux how code gets into the kernel

Release 4.12 include/linux/hugetlb_cgroup.h

Directory: include/linux
/*
 * 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/mmdebug.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_PAGE(!PageHuge(page), page); if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER) return NULL; return (struct hugetlb_cgroup *)page[2].private; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V4692.00%133.33%
Sasha Levin36.00%133.33%
Kirill A. Shutemov12.00%133.33%
Total50100.00%3100.00%


static inline int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg) { VM_BUG_ON_PAGE(!PageHuge(page), page); if (compound_order(page) < HUGETLB_CGROUP_MIN_ORDER) return -1; page[2].private = (unsigned long)h_cg; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V5189.47%133.33%
Sasha Levin35.26%133.33%
Kirill A. Shutemov35.26%133.33%
Total57100.00%3100.00%


static inline bool hugetlb_cgroup_disabled(void) { return !cgroup_subsys_enabled(hugetlb_cgrp_subsys); }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V1168.75%150.00%
Tejun Heo531.25%150.00%
Total16100.00%2100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V17100.00%1100.00%
Total17100.00%1100.00%


static inline int set_hugetlb_cgroup(struct page *page, struct hugetlb_cgroup *h_cg) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V20100.00%1100.00%
Total20100.00%1100.00%


static inline bool hugetlb_cgroup_disabled(void) { return true; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V12100.00%1100.00%
Total12100.00%1100.00%


static inline int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages, struct hugetlb_cgroup **ptr) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V23100.00%1100.00%
Total23100.00%1100.00%


static inline void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages, struct hugetlb_cgroup *h_cg, struct page *page) { }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V2295.65%150.00%
Chen Gang S14.35%150.00%
Total23100.00%2100.00%


static inline void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page) { }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V1794.44%150.00%
Chen Gang S15.56%150.00%
Total18100.00%2100.00%


static inline void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages, struct hugetlb_cgroup *h_cg) { }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V1794.44%150.00%
Chen Gang S15.56%150.00%
Total18100.00%2100.00%


static inline void hugetlb_cgroup_file_init(void) { }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V562.50%150.00%
Jianguo Wu337.50%150.00%
Total8100.00%2100.00%


static inline void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage) { }

Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V1593.75%150.00%
Chen Gang S16.25%150.00%
Total16100.00%2100.00%

#endif /* CONFIG_MEM_RES_CTLR_HUGETLB */ #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Aneesh Kumar K.V37893.80%550.00%
Sasha Levin71.74%110.00%
Jianguo Wu51.24%110.00%
Tejun Heo51.24%110.00%
Kirill A. Shutemov40.99%110.00%
Chen Gang S40.99%110.00%
Total403100.00%10100.00%
Directory: include/linux
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