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c164e038ee
linux/arch/arm64/include/asm
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Kirill A. Shutemov c164e038ee mm: fix huge zero page accounting in smaps report 
As a small zero page, huge zero page should not be accounted in smaps
report as normal page.

For small pages we rely on vm_normal_page() to filter out zero page, but
vm_normal_page() is not designed to handle pmds.  We only get here due
hackish cast pmd to pte in smaps_pte_range() -- pte and pmd format is not
necessary compatible on each and every architecture.

Let's add separate codepath to handle pmds.  follow_trans_huge_pmd() will
detect huge zero page for us.

We would need pmd_dirty() helper to do this properly.  The patch adds it
to THP-enabled architectures which don't yet have one.

[akpm@linux-foundation.org: use do_div to fix 32-bit build]
Signed-off-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengwei Yin <yfw.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:08 -08:00
..
xen
alternative-asm.h arm64: add Cortex-A53 cache errata workaround 2014-11-25 15:56:21 +00:00
alternative.h arm64: add module support for alternatives fixups 2014-12-04 10:28:24 +00:00
arch_timer.h clocksource: arch_timer: Fix code to use physical timers when requested 2014-12-04 23:30:26 -08:00
asm-offsets.h
assembler.h arm64: debug: avoid accessing mdscr_el1 on fault paths where possible 2014-05-12 16:43:28 +01:00
atomic.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
barrier.h - Optimised assembly string/memory routines (based on the AArch64 Cortex 2014-06-06 10:43:28 -07:00
bitops.h
cache.h arm64: Implement support for read-mostly sections 2014-12-03 10:19:35 +00:00
cacheflush.h arm64: compat: align cacheflush syscall with arch/arm 2014-12-01 13:31:12 +00:00
cachetype.h arm64: add helper functions to read I-cache attributes 2014-09-08 14:39:18 +01:00
cmpxchg.h arm64: percpu: Implement this_cpu operations 2014-11-20 12:05:18 +00:00
compat.h arm64: add SIGSYS siginfo for compat task 2014-11-28 10:24:59 +00:00
compiler.h
cpu_ops.h arm64: Remove unneeded extern keyword 2014-10-03 14:51:02 +01:00
cpu.h arm64: sanity checks: add ID_AA64DFR{0,1}_EL1 2014-11-25 15:56:44 +00:00
cpufeature.h arm64: Provide a namespace to NCAPS 2014-12-04 09:57:41 +00:00
cpuidle.h arm64: kernel: introduce cpu_init_idle CPU operation 2014-09-12 10:48:55 +01:00
cputable.h
cputype.h arm64: add Cortex-A53 cache errata workaround 2014-11-25 15:56:21 +00:00
debug-monitors.h arm64: Fix typos in KGDB macros 2014-09-25 15:35:41 +01:00
device.h
dma-mapping.h arm64: Implement set_arch_dma_coherent_ops() to replace bus notifiers 2014-09-22 11:48:31 +01:00
dmi.h arm64: dmi: Add SMBIOS/DMI support 2014-11-05 09:03:25 +01:00
efi.h efi/arm64: efistub: Move shared dependencies to <asm/efi.h> 2014-07-07 20:29:47 +01:00
elf.h arm64: ASLR: Don't randomise text when randomise_va_space == 0 2014-10-24 15:47:49 +01:00
esr.h
exception.h
exec.h
fb.h
fixmap.h arm64: Add FIX_HOLE to permanent fixed addresses 2014-11-26 11:32:17 +00:00
fpsimd.h
fpsimdmacros.h arm64: fpsimd: avoid restoring fpcr if the contents haven't changed 2014-07-18 10:21:17 +01:00
ftrace.h arm64: ftrace: Add system call tracepoint 2014-05-29 09:08:33 +01:00
futex.h
hardirq.h arm64: Get rid of handle_IRQ 2014-09-03 13:11:00 +00:00
hugetlb.h
hw_breakpoint.h arm64: ptrace: fix compat hardware watchpoint reporting 2014-08-28 20:01:36 +01:00
hwcap.h arm64: Add COMPAT_HWCAP_LPAE 2014-11-17 10:43:42 +00:00
hypervisor.h
insn.h arm64: Emulate CP15 Barrier instructions 2014-11-20 16:34:48 +00:00
io.h asm-generic: asm/io.h rewrite 2014-12-09 17:25:00 -08:00
irq_work.h arm64: Fix compilation error on UP builds 2014-10-21 17:01:07 +01:00
irq.h arm64/include/asm: Fixed a warning about 'struct pt_regs' 2014-12-04 10:10:59 +00:00
irqflags.h
jump_label.h
Kbuild Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-10-18 14:24:36 -07:00
kgdb.h arm64: Fix typos in KGDB macros 2014-09-25 15:35:41 +01:00
kvm_arm.h arm64/kvm: Fix assembler compatibility of macros 2014-11-06 17:25:28 +00:00
kvm_asm.h arm64: KVM: add trap handlers for AArch32 debug registers 2014-07-11 04:57:45 -07:00
kvm_coproc.h arm64: KVM: common infrastructure for handling AArch32 CP14/CP15 2014-07-11 04:57:44 -07:00
kvm_emulate.h arm/arm64: KVM: Report correct FSC for unsupported fault types 2014-09-26 14:39:45 +02:00
kvm_host.h Changes for KVM for arm/arm64 for 3.18 2014-09-27 11:03:33 +02:00
kvm_mmio.h
kvm_mmu.h arm64: KVM: Implement 48 VA support for KVM EL2 and Stage-2 2014-10-14 05:48:19 -07:00
kvm_psci.h
linkage.h
memblock.h
memory.h asm-generic: asm/io.h rewrite 2014-12-09 17:25:00 -08:00
mmu_context.h
mmu.h Merge branch 'arm64-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-05 13:15:32 -07:00
module.h
neon.h
opcodes.h arm64: Add AArch32 instruction set condition code checks 2014-11-20 16:33:45 +00:00
page.h arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
pci.h arm64: Add architectural support for PCI 2014-09-30 17:08:57 -06:00
percpu.h arm64: percpu: Implement this_cpu operations 2014-11-20 12:05:18 +00:00
perf_event.h
pgalloc.h arm64: pgalloc: consistently use PGALLOC_GFP 2014-11-20 12:05:18 +00:00
pgtable-hwdef.h arm64: Remove asm/pgtable-*level-hwdef.h files 2014-07-23 15:27:51 +01:00
pgtable-types.h arm64: Remove asm/pgtable-*level-types.h files 2014-07-23 15:27:56 +01:00
pgtable.h mm: fix huge zero page accounting in smaps report 2014-12-10 17:41:08 -08:00
pmu.h
proc-fns.h arm64: convert part of soft_restart() to assembly 2014-09-08 14:39:18 +01:00
processor.h arm64: report correct stack pointer in KSTK_ESP for compat tasks 2014-08-29 16:11:10 +01:00
psci.h PSCI: Add initial support for PSCIv0.2 functions 2014-05-15 10:16:00 -04:00
ptrace.h arm64: Add brackets around user_stack_pointer() 2014-08-29 16:11:00 +01:00
seccomp.h arm64: add seccomp support 2014-11-28 10:24:59 +00:00
shmparam.h
signal32.h arm64: Use get_signal() signal_setup_done() 2014-08-06 12:56:16 +02:00
smp_plat.h
smp.h arm64: Tell irq work about self IPI support 2014-09-13 18:46:13 +02:00
sparsemem.h arm64: mm: update max pa bits to 48 2014-08-19 20:23:02 +01:00
spinlock_types.h
spinlock.h
stackprotector.h arm64: Add CONFIG_CC_STACKPROTECTOR 2014-07-09 12:23:48 +01:00
stacktrace.h
stat.h
string.h arm64: lib: Implement optimized string length routines 2014-05-23 15:17:12 +01:00
suspend.h arm64: kernel: refactor the CPU suspend API for retention states 2014-09-12 10:48:55 +01:00
sync_bitops.h
syscall.h arm64: Add audit support 2014-07-10 11:06:00 +01:00
syscalls.h
sysreg.h arm64: gicv3: Allow GICv3 compilation with older binutils 2014-07-25 13:12:15 +01:00
system_misc.h
thread_info.h arm64: LLVMLinux: Calculate current_thread_info from current_stack_pointer 2014-09-08 14:39:19 +01:00
timex.h
tlb.h mmu_gather: move minimal range calculations into generic code 2014-11-17 10:12:42 +00:00
tlbflush.h arm64: fix soft lockup due to large tlb flush range 2014-07-24 18:41:13 +01:00
topology.h arm64: sched: Remove unused mc_capable() and smt_capable() 2014-05-16 17:12:04 +01:00
traps.h arm64: Add support for hooks to handle undefined instructions 2014-11-20 16:33:43 +00:00
uaccess.h
ucontext.h
unistd32.h arm64 updates for 3.19 2014-12-09 13:12:47 -08:00
unistd.h arm64: add seccomp support 2014-11-28 10:24:59 +00:00
vdso_datapage.h
vdso.h
virt.h arm64: KVM: remove __kvm_hyp_code_{start,end} from hyp.S 2014-07-11 04:57:35 -07:00
word-at-a-time.h