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ca5999fde0
The include/linux/pgtable.h is going to be the home of generic page table manipulation functions. Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and make the latter include asm/pgtable.h. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _MM_PAGE_REPORTING_H
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#define _MM_PAGE_REPORTING_H
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#include <linux/mmzone.h>
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#include <linux/pageblock-flags.h>
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#include <linux/page-isolation.h>
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#include <linux/jump_label.h>
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#include <linux/slab.h>
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#include <linux/pgtable.h>
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#include <linux/scatterlist.h>
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#define PAGE_REPORTING_MIN_ORDER pageblock_order
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#ifdef CONFIG_PAGE_REPORTING
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DECLARE_STATIC_KEY_FALSE(page_reporting_enabled);
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void __page_reporting_notify(void);
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static inline bool page_reported(struct page *page)
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{
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return static_branch_unlikely(&page_reporting_enabled) &&
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PageReported(page);
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}
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/**
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* page_reporting_notify_free - Free page notification to start page processing
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*
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* This function is meant to act as a screener for __page_reporting_notify
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* which will determine if a give zone has crossed over the high-water mark
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* that will justify us beginning page treatment. If we have crossed that
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* threshold then it will start the process of pulling some pages and
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* placing them in the batch list for treatment.
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*/
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static inline void page_reporting_notify_free(unsigned int order)
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{
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/* Called from hot path in __free_one_page() */
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if (!static_branch_unlikely(&page_reporting_enabled))
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return;
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/* Determine if we have crossed reporting threshold */
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if (order < PAGE_REPORTING_MIN_ORDER)
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return;
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/* This will add a few cycles, but should be called infrequently */
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__page_reporting_notify();
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}
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#else /* CONFIG_PAGE_REPORTING */
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#define page_reported(_page) false
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static inline void page_reporting_notify_free(unsigned int order)
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{
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}
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#endif /* CONFIG_PAGE_REPORTING */
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#endif /*_MM_PAGE_REPORTING_H */
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