Mike Rapoport
e31cf2f4ca
mm: don't include asm/pgtable.h if linux/mm.h is already included
...
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 >
2020-06-09 09:39:13 -07:00
