mirror of
https://github.com/torvalds/linux
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e31cf2f4ca
Patch series "mm: consolidate definitions of page table accessors", v2.
The low level page table accessors (pXY_index(), pXY_offset()) are
duplicated across all architectures and sometimes more than once. For
instance, we have 31 definition of pgd_offset() for 25 supported
architectures.
Most of these definitions are actually identical and typically it boils
down to, e.g.
static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}
These definitions can be shared among 90% of the arches provided
XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined.
For architectures that really need a custom version there is always
possibility to override the generic version with the usual ifdefs magic.
These patches introduce include/linux/pgtable.h that replaces
include/asm-generic/pgtable.h and add the definitions of the page table
accessors to the new header.
This patch (of 12):
The linux/mm.h header includes <asm/pgtable.h> to allow inlining of the
functions involving page table manipulations, e.g. pte_alloc() and
pmd_alloc(). So, there is no point to explicitly include <asm/pgtable.h>
in the files that include <linux/mm.h>.
The include statements in such cases are remove with a simple loop:
for f in $(git grep -l "include <linux/mm.h>") ; do
sed -i -e '/include <asm\/pgtable.h>/ d' $f
done
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: Mike Rapoport <rppt@kernel.org>
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/20200514170327.31389-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| .. | ||
| ge | ||
| xics | ||
| xive | ||
| 6xx-suspend.S | ||
| cpm2.c | ||
| cpm2_pic.c | ||
| cpm2_pic.h | ||
| cpm_common.c | ||
| cpm_gpio.c | ||
| dart.h | ||
| dart_iommu.c | ||
| dcr-low.S | ||
| dcr.c | ||
| ehv_pic.c | ||
| fsl_85xx_cache_ctlr.h | ||
| fsl_85xx_cache_sram.c | ||
| fsl_85xx_l2ctlr.c | ||
| fsl_gtm.c | ||
| fsl_lbc.c | ||
| fsl_mpic_err.c | ||
| fsl_mpic_timer_wakeup.c | ||
| fsl_msi.c | ||
| fsl_msi.h | ||
| fsl_pci.c | ||
| fsl_pci.h | ||
| fsl_pmc.c | ||
| fsl_rcpm.c | ||
| fsl_rio.c | ||
| fsl_rio.h | ||
| fsl_rmu.c | ||
| fsl_soc.c | ||
| fsl_soc.h | ||
| grackle.c | ||
| i8259.c | ||
| indirect_pci.c | ||
| ipic.c | ||
| ipic.h | ||
| Kconfig | ||
| Makefile | ||
| mmio_nvram.c | ||
| mpc5xxx_clocks.c | ||
| mpic.c | ||
| mpic.h | ||
| mpic_msgr.c | ||
| mpic_msi.c | ||
| mpic_timer.c | ||
| mpic_u3msi.c | ||
| msi_bitmap.c | ||
| of_rtc.c | ||
| pmi.c | ||
| rtc_cmos_setup.c | ||
| tsi108_dev.c | ||
| tsi108_pci.c | ||
| udbg_memcons.c | ||