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65fddcfca8
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include
of the latter in the middle of asm includes. Fix this up with the aid of
the below script and manual adjustments here and there.
import sys
import re
if len(sys.argv) is not 3:
print "USAGE: %s <file> <header>" % (sys.argv[0])
sys.exit(1)
hdr_to_move="#include <linux/%s>" % sys.argv[2]
moved = False
in_hdrs = False
with open(sys.argv[1], "r") as f:
lines = f.readlines()
for _line in lines:
line = _line.rstrip('
')
if line == hdr_to_move:
continue
if line.startswith("#include <linux/"):
in_hdrs = True
elif not moved and in_hdrs:
moved = True
print hdr_to_move
print line
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/20200514170327.31389-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
108 lines
2.5 KiB
ArmAsm
108 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* clear_page.S: UltraSparc optimized clear page.
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*
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* Copyright (C) 1996, 1998, 1999, 2000, 2004 David S. Miller (davem@redhat.com)
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* Copyright (C) 1997 Jakub Jelinek (jakub@redhat.com)
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*/
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#include <linux/pgtable.h>
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#include <asm/visasm.h>
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#include <asm/thread_info.h>
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#include <asm/page.h>
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#include <asm/spitfire.h>
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#include <asm/head.h>
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#include <asm/export.h>
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/* What we used to do was lock a TLB entry into a specific
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* TLB slot, clear the page with interrupts disabled, then
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* restore the original TLB entry. This was great for
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* disturbing the TLB as little as possible, but it meant
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* we had to keep interrupts disabled for a long time.
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*
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* Now, we simply use the normal TLB loading mechanism,
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* and this makes the cpu choose a slot all by itself.
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* Then we do a normal TLB flush on exit. We need only
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* disable preemption during the clear.
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*/
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.text
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.globl _clear_page
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EXPORT_SYMBOL(_clear_page)
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_clear_page: /* %o0=dest */
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ba,pt %xcc, clear_page_common
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clr %o4
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/* This thing is pretty important, it shows up
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* on the profiles via do_anonymous_page().
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*/
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.align 32
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.globl clear_user_page
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EXPORT_SYMBOL(clear_user_page)
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clear_user_page: /* %o0=dest, %o1=vaddr */
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lduw [%g6 + TI_PRE_COUNT], %o2
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sethi %hi(PAGE_OFFSET), %g2
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sethi %hi(PAGE_SIZE), %o4
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ldx [%g2 + %lo(PAGE_OFFSET)], %g2
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sethi %hi(PAGE_KERNEL_LOCKED), %g3
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ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
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sub %o0, %g2, %g1 ! paddr
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and %o1, %o4, %o0 ! vaddr D-cache alias bit
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or %g1, %g3, %g1 ! TTE data
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sethi %hi(TLBTEMP_BASE), %o3
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add %o2, 1, %o4
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add %o0, %o3, %o0 ! TTE vaddr
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/* Disable preemption. */
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mov TLB_TAG_ACCESS, %g3
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stw %o4, [%g6 + TI_PRE_COUNT]
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/* Load TLB entry. */
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rdpr %pstate, %o4
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wrpr %o4, PSTATE_IE, %pstate
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stxa %o0, [%g3] ASI_DMMU
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stxa %g1, [%g0] ASI_DTLB_DATA_IN
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sethi %hi(KERNBASE), %g1
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flush %g1
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wrpr %o4, 0x0, %pstate
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mov 1, %o4
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clear_page_common:
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VISEntryHalf
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membar #StoreLoad | #StoreStore | #LoadStore
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fzero %f0
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sethi %hi(PAGE_SIZE/64), %o1
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mov %o0, %g1 ! remember vaddr for tlbflush
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fzero %f2
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or %o1, %lo(PAGE_SIZE/64), %o1
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faddd %f0, %f2, %f4
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fmuld %f0, %f2, %f6
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faddd %f0, %f2, %f8
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fmuld %f0, %f2, %f10
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faddd %f0, %f2, %f12
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fmuld %f0, %f2, %f14
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1: stda %f0, [%o0 + %g0] ASI_BLK_P
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subcc %o1, 1, %o1
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bne,pt %icc, 1b
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add %o0, 0x40, %o0
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membar #Sync
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VISExitHalf
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brz,pn %o4, out
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nop
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stxa %g0, [%g1] ASI_DMMU_DEMAP
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membar #Sync
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stw %o2, [%g6 + TI_PRE_COUNT]
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out: retl
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nop
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