Linus Torvalds b91e1302ad mm: optimize PageWaiters bit use for unlock_page() ... In commit 6290602709 ("mm: add PageWaiters indicating tasks are waiting for a page bit") Nick Piggin made our page locking no longer unconditionally touch the hashed page waitqueue, which not only helps performance in general, but is particularly helpful on NUMA machines where the hashed wait queues can bounce around a lot. However, the "clear lock bit atomically and then test the waiters bit" sequence turns out to be much more expensive than it needs to be, because you get a nasty stall when trying to access the same word that just got updated atomically. On architectures where locking is done with LL/SC, this would be trivial to fix with a new primitive that clears one bit and tests another atomically, but that ends up not working on x86, where the only atomic operations that return the result end up being cmpxchg and xadd. The atomic bit operations return the old value of the same bit we changed, not the value of an unrelated bit. On x86, we could put the lock bit in the high bit of the byte, and use "xadd" with that bit (where the overflow ends up not touching other bits), and look at the other bits of the result. However, an even simpler model is to just use a regular atomic "and" to clear the lock bit, and then the sign bit in eflags will indicate the resulting state of the unrelated bit #7. So by moving the PageWaiters bit up to bit #7, we can atomically clear the lock bit and test the waiters bit on x86 too. And architectures with LL/SC (which is all the usual RISC suspects), the particular bit doesn't matter, so they are fine with this approach too. This avoids the extra access to the same atomic word, and thus avoids the costly stall at page unlock time. The only downside is that the interface ends up being a bit odd and specialized: clear a bit in a byte, and test the sign bit. Nick doesn't love the resulting name of the new primitive, but I'd rather make the name be descriptive and very clear about the limitation imposed by trying to work across all relevant architectures than make it be some generic thing that doesn't make the odd semantics explicit. So this introduces the new architecture primitive clear_bit_unlock_is_negative_byte(); and adds the trivial implementation for x86. We have a generic non-optimized fallback (that just does a "clear_bit()"+"test_bit(7)" combination) which can be overridden by any architecture that can do better. According to Nick, Power has the same hickup x86 has, for example, but some other architectures may not even care. All these optimizations mean that my page locking stress-test (which is just executing a lot of small short-lived shell scripts: "make test" in the git source tree) no longer makes our page locking look horribly bad. Before all these optimizations, just the unlock_page() costs were just over 3% of all CPU overhead on "make test". After this, it's down to 0.66%, so just a quarter of the cost it used to be. (The difference on NUMA is bigger, but there this micro-optimization is likely less noticeable, since the big issue on NUMA was not the accesses to 'struct page', but the waitqueue accesses that were already removed by Nick's earlier commit). Acked-by: Nick Piggin <npiggin@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Bob Peterson <rpeterso@redhat.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Andrew Lutomirski <luto@kernel.org> Cc: Andreas Gruenbacher <agruenba@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-12-29 11:03:15 -08:00
..
crypto	crypto: glue_helper - Add skcipher xts helpers	2016-11-28 21:23:20 +08:00
fpu	x86/fpu: Remove irq_ts_save() and irq_ts_restore()	2016-11-01 07:47:54 +01:00
numachip	x86/numachip: Introduce Numachip2 timer mechanisms	2015-09-22 22:25:33 +02:00
trace	This release has a few updates:	2016-12-15 13:49:34 -08:00
uv	x86/platform/uv/BAU: Add UV4-specific functions	2016-09-22 11:16:15 +02:00
xen	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
a.out-core.h
acenv.h
acpi.h	x86/amd: Simplify AMD E400 aware idle routine	2016-12-09 21:23:21 +01:00
agp.h
alternative-asm.h	x86/alternatives: Document macros	2015-05-06 11:25:31 +02:00
alternative.h	x86/alternatives: Add stack frame dependency to alternative_call_2()	2016-09-24 09:30:03 +02:00
amd_nb.h	x86/amd_nb: Add SMN and Indirect Data Fabric access for AMD Fam17h	2016-11-16 20:46:38 +01:00
apb_timer.h
apic_flat_64.h
apic.h	Merge branch 'x86-idle-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 14:55:04 -08:00
apicdef.h
apm.h	x86, asm: use bool for bitops and other assembly outputs	2016-06-08 12:41:20 -07:00
arch_hweight.h	x86/hweight: Get rid of the special calling convention	2016-06-08 15:01:02 +02:00
archrandom.h	x86, asm: Use CC_SET()/CC_OUT() and static_cpu_has() in archrandom.h	2016-06-08 12:41:20 -07:00
asm-offsets.h
asm-prototypes.h	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
asm.h	x86, asm: define CC_SET() and CC_OUT() macros	2016-06-08 12:41:20 -07:00
atomic64_32.h	locking/atomic, arch/x86: Implement atomic{,64}_fetch_{add,sub,and,or,xor}()	2016-06-16 10:48:31 +02:00
atomic64_64.h	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 15:34:18 -07:00
atomic.h	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 15:34:18 -07:00
barrier.h	locking/x86: Tweak the comment about use of wmb() for IO	2016-01-29 09:40:10 +01:00
bios_ebda.h	x86/boot: Reorganize and clean up the BIOS area reservation code	2016-07-21 10:11:57 +02:00
bitops.h	mm: optimize PageWaiters bit use for unlock_page()	2016-12-29 11:03:15 -08:00
boot.h	x86/KASLR: Build identity mappings on demand	2016-05-07 07:38:39 +02:00
bootparam_utils.h
bug.h
bugs.h	x86/mm/mpx: Work around MPX erratum SKD046	2016-05-20 09:07:40 +02:00
cache.h
cacheflush.h	remove stray include of asm/uaccess.h from cacheflush.h	2016-09-27 21:15:22 -04:00
calgary.h	x86/platform/calgary: Constify cal_chipset_ops structures	2015-11-29 08:50:58 +01:00
ce4100.h
checksum_32.h	x86/uaccess: Move thread_info::addr_limit to thread_struct	2016-07-15 10:26:30 +02:00
checksum_64.h	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
checksum.h
clocksource.h	x86/vdso: Remove direct HPET access through the vDSO	2016-04-13 10:28:34 +02:00
cmdline.h
cmpxchg_32.h	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros	2015-12-19 11:49:55 +01:00
cmpxchg_64.h	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros	2015-12-19 11:49:55 +01:00
cmpxchg.h	x86/cmpxchg, locking/atomics: Remove superfluous definitions	2016-09-30 10:56:01 +02:00
compat.h	x86/coredump: Always use user_regs_struct for compat_elf_gregset_t	2016-11-24 06:01:05 +01:00
cpu_device_id.h
cpu.h	xen: features and fixes for 4.8-rc0	2016-07-27 11:35:37 -07:00
cpufeature.h	x86/cpufeature: Provide helper to set bugs bits	2016-12-09 21:23:20 +01:00
cpufeatures.h	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-22 09:25:45 -08:00
cpumask.h
crash.h
current.h
debugreg.h
delay.h	x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer	2015-08-22 14:52:16 +02:00
desc_defs.h	x86/signal/64: Fix SS if needed when delivering a 64-bit signal	2016-02-17 08:32:11 +01:00
desc.h	x86: Apply more __ro_after_init and const	2016-08-10 14:55:05 +02:00
device.h	x86/PCI: Allow DMA ops specific to a PCI domain	2016-01-15 13:54:55 -06:00
disabled-features.h	x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated	2016-06-30 09:11:32 +02:00
div64.h
dma-mapping.h	dma-mapping: use unsigned long for dma_attrs	2016-08-04 08:50:07 -04:00
dma.h	x86/mm: Fix zone ranges boot printout	2014-12-11 11:35:02 +01:00
dmi.h	x86/dmi: Switch dmi_remap() from ioremap() [uncached] to ioremap_cache()	2016-02-09 14:36:43 +01:00
dwarf2.h	x86/asm: Remove the xyz_cfi macros from dwarf2.h	2015-10-14 16:56:28 +02:00
e820.h	x86: Make E820_X_MAX unconditionally larger than E820MAX	2016-12-09 10:59:04 +01:00
edac.h	EDAC: Cleanup atomic_scrub mess	2015-05-28 15:31:53 +02:00
efi.h	efi: Allow bitness-agnostic protocol calls	2016-11-13 08:23:16 +01:00
elf.h	tree-wide: replace config_enabled() with IS_ENABLED()	2016-08-04 08:50:07 -04:00
emergency-restart.h
entry_arch.h	Merge branch 'x86/ras' into x86/core, to fix conflicts	2015-06-07 15:35:27 +02:00
espfix.h	x86/espfix: Add 'cpu' parameter to init_espfix_ap()	2015-07-06 15:00:33 +02:00
exec.h
export.h	x86: move exports to actual definitions	2016-08-07 23:47:15 -04:00
extable.h	x86: separate extable.h, switch sections.h to it	2016-09-27 21:15:23 -04:00
fb.h
fixmap.h	x86/mm: Make kmap_prot into a #define	2016-01-20 11:39:14 +01:00
floppy.h	x86/floppy: Use designated initializers	2016-12-18 09:25:38 +01:00
frame.h	x86/asm: Add C versions of frame pointer macros	2016-01-19 12:59:07 +01:00
ftrace.h	ftrace/x86: Implement HAVE_FUNCTION_GRAPH_RET_ADDR_PTR	2016-08-24 12:15:15 +02:00
futex.h
gart.h
genapic.h
geode.h
hardirq.h	x86/irq: Do not substract irq_tlb_count from irq_call_count	2016-08-11 11:14:59 +02:00
highmem.h	kmap_atomic_to_page() has no users, remove it	2015-11-09 15:11:24 -08:00
hpet.h	timers/x86/hpet: Type adjustments	2015-10-21 11:17:32 +02:00
hugetlb.h	Merge branch 'x86/urgent' into x86/asm, to fix semantic conflict	2016-04-22 10:13:53 +02:00
hw_breakpoint.h
hw_irq.h	x86/irq: Cure live lock in fixup_irqs()	2016-03-18 14:51:06 +01:00
hypertransport.h
hypervisor.h	virt, sched: Add generic vCPU pinning support	2016-09-05 13:52:38 +02:00
i8259.h	x86/irq: Probe for PIC presence before allocating descs for legacy IRQs	2015-11-07 10:37:37 +01:00
ia32_unistd.h
ia32.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
imr.h	x86/platform/intel/quark: Drop IMR lock bit support	2016-02-23 07:37:23 +01:00
inat_types.h
inat.h	x86/insn: Add AVX-512 support to the instruction decoder	2016-07-21 09:37:11 -03:00
init.h	x86/power/64: Always create temporary identity mapping correctly	2016-08-08 22:04:30 +02:00
insn.h	x86/insn: Add AVX-512 support to the instruction decoder	2016-07-21 09:37:11 -03:00
inst.h
intel_mid_vrtc.h
intel_pmc_ipc.h	intel_pmc_ipc: Update kerneldoc formatting	2015-07-09 11:23:15 -07:00
intel_pt.h	perf/x86/intel/pt: Add interface to stop Intel PT logging	2015-11-23 09:58:26 +01:00
intel_punit_ipc.h	platform:x86: add Intel P-Unit mailbox IPC driver	2016-01-19 15:49:36 -08:00
intel_rdt_common.h	x86/cqm: Share PQR_ASSOC related data between CQM and CAT	2016-10-26 23:12:39 +02:00
intel_rdt.h	x86/intel_rdt: Call intel_rdt_sched_in() with preemption disabled	2016-12-02 01:13:02 +01:00
intel_scu_ipc.h	x86/platform/intel-mid: Implement power off sequence	2016-09-08 08:03:58 +02:00
intel_telemetry.h	intel_telemetry: Constify telemetry_core_ops structures	2016-05-05 13:58:55 -07:00
intel-family.h	x86/cpu/intel: Add Knights Mill to Intel family	2016-10-17 10:45:08 +02:00
intel-mid.h	x86/platform/intel-mid: Retrofit pci_platform_pm_ops ->get_state hook	2016-11-07 13:06:59 +01:00
io_apic.h	x86: Cleanup irq_domain ops	2015-04-24 15:36:55 +02:00
io.h	x86/io: add interface to reserve io memtype for a resource range. (v1.1)	2016-10-26 15:45:38 +10:00
iomap.h
iommu_table.h	x86/iommu: Fix header comments regarding standard and _FINISH macros	2015-04-09 10:56:31 +02:00
iommu.h
iosf_mbi.h	ACPI / LPSS: override power state for LPSS DMA device	2016-01-07 14:11:32 +01:00
ipi.h	x86/apic: Deinline __default_send_IPI_*, save ~200 bytes	2016-03-08 12:26:41 +01:00
irq_regs.h
irq_remapping.h	irq_remapping: move structs outside #ifdef	2015-10-01 15:06:42 +02:00
irq_vectors.h	x86/vm86: Move the vm86 IRQ definitions to vm86.h	2015-07-31 13:31:10 +02:00
irq_work.h	x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage	2016-04-13 11:37:41 +02:00
irq.h	nmi_backtrace: add more trigger_*_cpu_backtrace() methods	2016-10-07 18:46:30 -07:00
irqdomain.h	x86/irq: Move irqdomain specific code into asm/irqdomain.h	2015-04-24 15:36:55 +02:00
irqflags.h	nmi_backtrace: generate one-line reports for idle cpus	2016-10-07 18:46:30 -07:00
ist.h
jump_label.h	x86/asm: Add asm macros for static keys/jump labels	2015-11-24 09:56:44 +01:00
kasan.h	x86/kasan: Define KASAN_SHADOW_OFFSET per architecture	2015-08-22 14:54:55 +02:00
kaslr.h	x86/mm/64: Enable KASLR for vmemmap memory region	2016-08-10 16:10:06 +02:00
kbdleds.h
Kbuild	x86/build: Remove three unneeded genhdr-y entries	2016-11-28 07:49:17 +01:00
kdebug.h	x86/dumpstack: Remove kernel text addresses from stack dump	2016-10-25 18:40:37 +02:00
kexec-bzimage64.h
kexec.h	x86/panic: replace smp_send_stop() with kdump friendly version in panic path	2016-10-11 15:06:32 -07:00
kgdb.h	x86/asm: Stop depending on ptrace.h in alternative.h	2016-04-29 11:56:40 +02:00
kmap_types.h
kmemcheck.h
kprobes.h	x86: fix up a few misc stack pointer vs thread_info confusions	2016-06-24 16:55:53 -07:00
kvm_emulate.h	KVM: x86: add read_phys to x86_emulate_ops	2015-11-04 16:24:31 +01:00
kvm_guest.h
kvm_host.h	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
kvm_page_track.h	kvm/page_track: call notifiers with kvm_page_track_notifier_node	2016-11-04 12:13:20 +01:00
kvm_para.h	x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option	2016-02-22 08:51:38 +01:00
lguest_hcall.h	x86/fpu, lguest: Remove CR0.TS support	2016-11-01 07:47:54 +01:00
lguest.h	lguest: Map switcher text R/O	2016-01-12 12:17:28 +01:00
linkage.h	x86/entry/32: Remove asmlinkage_protect()	2016-05-05 08:37:31 +02:00
livepatch.h	x86: Audit and remove any remaining unnecessary uses of module.h	2016-07-14 15:07:00 +02:00
local64.h
local.h	x86, asm: change the GEN_*_RMWcc() macros to not quote the condition	2016-06-08 12:41:20 -07:00
mach_timer.h
mach_traps.h
math_emu.h	x86/vm86: Clean up vm86.h includes	2015-07-31 13:31:10 +02:00
mc146818rtc.h	rtc: cmos: move mc146818rtc code out of asm-generic/rtc.h	2016-06-04 00:20:00 +02:00
mce.h	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 19:25:04 -08:00
microcode_amd.h	x86/microcode/amd: Move private inlines to .c and mark local functions static	2016-10-25 12:28:59 +02:00
microcode_intel.h	x86/microcode/intel: Remove intel_lib.c	2016-10-25 12:28:59 +02:00
microcode.h	x86/microcode: Rework microcode loading	2016-10-25 12:28:59 +02:00
misc.h
mmconfig.h
mmu_context.h	x86/ldt: Make all size computations unsigned	2016-12-10 00:24:39 +01:00
mmu.h	x86/mpx: Move bd_addr to mm_context_t	2016-12-17 12:29:56 +01:00
mmx.h
mmzone_32.h
mmzone_64.h
mmzone.h
module.h
mpspec_def.h
mpspec.h	x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping	2016-09-21 21:18:38 +02:00
mpx.h	x86/mpx: Move bd_addr to mm_context_t	2016-12-17 12:29:56 +01:00
mshyperv.h	mshyperv: fix recognition of Hyper-V guest crash MSR's	2015-08-04 22:30:44 -07:00
msi.h	x86/irq: Export functions to allow MSI domains in modules	2015-12-20 12:40:49 +01:00
msidef.h
msr-index.h	x86/mce: Include the PPIN in MCE records when available	2016-11-23 16:51:52 +01:00
msr-trace.h	x86, tracing, perf: Add trace point for MSR accesses	2015-12-06 12:56:10 +01:00
msr.h	x86/msr: Cleanup/streamline MSR helpers	2016-11-16 10:23:02 +01:00
mtrr.h	x86/mtrr: Fix Xorg crashes in Qemu sessions	2016-03-29 12:23:26 +02:00
mwait.h	x86/cpu: Add workaround for MONITOR instruction erratum on Goldmont based CPUs	2016-07-20 09:48:40 +02:00
nmi.h
nops.h
numa_32.h
numa.h
olpc_ofw.h
olpc.h
page_32_types.h	x86/asm, x86/microcode: Add __PAGE_OFFSET_BASE define on 32-bit	2016-07-27 14:59:59 +02:00
page_32.h
page_64_types.h	x86/mm: Enable KASLR for physical mapping memory regions	2016-07-08 17:35:15 +02:00
page_64.h
page_types.h	x86/mm: Align macro defines	2015-12-19 11:53:40 +01:00
page.h	x86/boot: Split out kernel_ident_mapping_init()	2016-05-07 07:38:39 +02:00
paravirt_types.h	Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 14:27:49 -08:00
paravirt.h	Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-12-12 14:27:49 -08:00
parport.h
pat.h	x86/xen, pat: Remove PAT table init code from Xen	2016-03-29 12:23:27 +02:00
pci_64.h
pci_x86.h	Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"	2016-02-27 08:52:20 -06:00
pci-direct.h
pci-functions.h
pci.h	x86/PCI: VMD: Request userspace control of PCIe hotplug indicators	2016-09-23 08:41:08 -05:00
percpu.h	x86: Remove x86_test_and_clear_bit_percpu()	2016-11-18 12:07:57 +01:00
perf_event_p4.h
perf_event.h	perf/x86/intel/pt: Don't die on VMXON	2016-04-28 10:32:42 +02:00
pgalloc.h	arch: x86: charge page tables to kmemcg	2016-07-26 16:19:19 -07:00
pgtable_32_types.h
pgtable_32.h
pgtable_64_types.h	x86/mm/64: Enable KASLR for vmemmap memory region	2016-08-10 16:10:06 +02:00
pgtable_64.h	x86/mm: Drop unused argument 'removed' from sync_global_pgds()	2016-12-15 12:46:07 +01:00
pgtable_types.h	mm: move phys_mem_access_prot_allowed() declaration to pgtable.h	2016-10-07 18:46:29 -07:00
pgtable-2level_types.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable-2level.h	x86: drop _PAGE_FILE and pte_file()-related helpers	2015-02-10 14:30:33 -08:00
pgtable-3level_types.h	x86: expose number of page table levels on Kconfig level	2015-04-14 16:49:02 -07:00
pgtable-3level.h	x86: drop _PAGE_FILE and pte_file()-related helpers	2015-02-10 14:30:33 -08:00
pgtable.h	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-07-25 17:32:28 -07:00
pkeys.h	x86/pkeys: Default to a restrictive init PKRU	2016-09-09 13:02:28 +02:00
platform_sst_audio.h	ASoc: Intel: Atom: add deep buffer definitions for atom platforms	2015-12-19 11:49:56 +00:00
pm-trace.h	PM / sleep: add pm-trace support for suspending phase	2015-03-18 15:54:27 +01:00
pmc_atom.h	x86/platform/intel/pmc_atom: Add Cherrytrail PMC interface	2015-07-06 18:39:38 +02:00
pmc_core.h	platform/x86: Add PMC Driver for Intel Core SoC	2016-05-27 11:47:56 -07:00
pmem.h	x86/mce: Improve memcpy_mcsafe()	2016-09-05 11:47:31 +02:00
posix_types.h
preempt.h	sched/x86: Do not clear PREEMPT_NEED_RESCHED on preempt count reset	2016-11-16 10:29:04 +01:00
probe_roms.h
processor-cyrix.h
processor-flags.h
processor.h	x86/asm: Rewrite sync_core() to use IRET-to-self	2016-12-19 11:54:21 +01:00
prom.h
proto.h	x86/entry: Vastly simplify SYSENTER TF (single-step) handling	2016-03-10 09:48:13 +01:00
ptrace.h	x86/entry: Get rid of two-phase syscall entry work	2016-06-14 10:54:39 -07:00
pvclock-abi.h	Revert "KVM: x86: zero kvmclock_offset when vcpu0 initializes kvmclock system MSR"	2015-09-28 13:06:37 +02:00
pvclock.h	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
qrwlock.h	locking/qrwlock: Implement queue_write_unlock() using smp_store_release()	2015-08-12 11:59:05 +02:00
qspinlock_paravirt.h	x86/locking: Create stack frame in PV unlock	2016-02-24 08:35:44 +01:00
qspinlock.h	x86/paravirt: Optimize native pv_lock_ops.vcpu_is_preempted()	2016-11-22 12:48:11 +01:00
realmode.h	x86/asm/head: Rename 'stack_start' -> 'initial_stack'	2016-08-18 18:41:29 +02:00
reboot_fixups.h
reboot.h	x86/nmi: Save regs in crash dump on external NMI	2015-12-19 11:07:01 +01:00
required-features.h	x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated	2016-06-30 09:11:32 +02:00
rio.h
rmwcc.h	x86, asm: change GEN_*_RMWcc() to use CC_SET()/CC_OUT()	2016-06-08 12:41:20 -07:00
rwsem.h	locking/rwsem/x86: Add stack frame dependency for ____down_write()	2016-10-18 12:21:16 +02:00
seccomp.h	x86: switch to using asm-generic for seccomp.h	2015-04-17 09:04:10 -04:00
sections.h	x86: separate extable.h, switch sections.h to it	2016-09-27 21:15:23 -04:00
segment.h	x86/arch_prctl/64: Remove FSBASE/GSBASE < 4G optimization	2016-04-29 11:56:41 +02:00
serial.h	serial: 8250: remove Kconfig indirection	2015-05-06 22:27:00 +02:00
setup_arch.h
setup.h	x86/asm: Stop depending on ptrace.h in alternative.h	2016-04-29 11:56:40 +02:00
shmparam.h
sigcontext.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
sigframe.h	x86/headers: Remove <asm/sigcontext.h> references on the kernel side	2015-09-08 10:06:05 +02:00
sighandling.h	x86/signal/64: Re-add support for SS in the 64-bit signal context	2016-02-17 08:32:11 +01:00
signal.h	x86/signal: Add SA_{X32,IA32}_ABI sa_flags	2016-09-14 21:28:11 +02:00
simd.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00
smap.h	x86/cpufeature: Carve out X86_FEATURE_*	2016-01-30 11:22:17 +01:00
smp.h	x86/panic: replace smp_send_stop() with kdump friendly version in panic path	2016-10-11 15:06:32 -07:00
sparsemem.h
special_insns.h	x86/fpu: Remove clts()	2016-11-01 07:47:55 +01:00
spinlock_types.h	x86, locking/spinlocks: Remove ticket (spin)lock implementation	2016-09-30 10:56:00 +02:00
spinlock.h	x86/paravirt: Optimize native pv_lock_ops.vcpu_is_preempted()	2016-11-22 12:48:11 +01:00
sta2x11.h
stackprotector.h	x86/asm/tsc: Rename native_read_tsc() to rdtsc()	2015-07-06 15:23:28 +02:00
stacktrace.h	x86/dumpstack: Make stack name tags more comprehensible	2016-11-21 13:00:42 +01:00
string_32.h
string_64.h	x86/mce: Improve memcpy_mcsafe()	2016-09-05 11:47:31 +02:00
string.h
suspend_32.h	x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume	2015-11-26 10:04:53 +01:00
suspend_64.h	x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume	2015-11-26 10:04:53 +01:00
suspend.h
svm.h	x86/kvm/svm: Simplify cpu_has_svm()	2016-06-16 00:04:31 +02:00
swiotlb.h	dma-mapping: use unsigned long for dma_attrs	2016-08-04 08:50:07 -04:00
switch_to.h	sched/x86: Pass kernel thread parameters in 'struct fork_frame'	2016-08-24 12:31:50 +02:00
sync_bitops.h	x86, bitops: remove use of "sbb" to return CF	2016-06-08 12:41:20 -07:00
sys_ia32.h
syscall.h	x86/asm: Move the thread_info::status field to thread_struct	2016-09-15 08:25:12 +02:00
syscalls.h	x86/vm86: Clean up vm86.h includes	2015-07-31 13:31:10 +02:00
sysfb.h
tce.h
text-patching.h	x86/asm: Stop depending on ptrace.h in alternative.h	2016-04-29 11:56:40 +02:00
thread_info.h	sched/core, x86: Make struct thread_info arch specific again	2016-10-20 13:27:47 +02:00
time.h
timer.h
timex.h
tlb.h
tlbflush.h	x86/asm: Get rid of __read_cr4_safe()	2016-09-30 12:40:12 +02:00
topology.h	sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO	2016-11-30 08:27:08 +01:00
trace_clock.h
traps.h	x86/mm: Improve stack-overflow #PF handling	2016-09-08 08:47:20 +02:00
tsc.h	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
uaccess_32.h	x86/uaccess: Enable hardened usercopy	2016-07-26 14:41:48 -07:00
uaccess_64.h	x86/uaccess: Enable hardened usercopy	2016-07-26 14:41:48 -07:00
uaccess.h	x86/uaccess, sched/preempt: Verify access_ok() context	2016-12-06 10:32:40 +01:00
unaligned.h
unistd.h	x86/syscalls: Add compat_sys_preadv64v2/compat_sys_pwritev64v2	2016-07-15 10:30:26 +02:00
unwind.h	x86/unwind: Dump stack data on warnings	2016-12-19 11:47:05 +01:00
uprobes.h
user32.h
user_32.h
user_64.h
user.h	x86/fpu: Rename xsave.header::xstate_bv to 'xfeatures'	2015-05-19 15:47:35 +02:00
vdso.h	x86/arch_prctl/vdso: Add ARCH_MAP_VDSO_*	2016-09-14 21:28:09 +02:00
vga.h
vgtod.h	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
virtext.h	x86/kvm/svm: Simplify cpu_has_svm()	2016-06-16 00:04:31 +02:00
vm86.h	x86/vm86: Rename vm86->v86flags and v86mask	2015-07-31 13:31:11 +02:00
vmx.h	KVM: nVMX: support restore of VMX capability MSRs	2016-12-08 15:31:07 +01:00
vsyscall.h
vvar.h
word-at-a-time.h
x2apic.h
x86_init.h	x86/init: Fix a couple of comment typos	2016-12-19 11:34:16 +01:00
xor_32.h	x86/cpufeature: Replace cpu_has_xmm with boot_cpu_has() usage	2016-04-13 11:37:40 +02:00
xor_64.h
xor_avx.h	x86/cpufeature: Replace cpu_has_avx with boot_cpu_has() usage	2016-04-13 11:37:40 +02:00
xor.h	x86/fpu: Rename i387.h to fpu/api.h	2015-05-19 15:47:30 +02:00