Peter Zijlstra (Intel) 2aa79af642 locking/qspinlock: Revert to test-and-set on hypervisors ... When we detect a hypervisor (!paravirt, see qspinlock paravirt support patches), revert to a simple test-and-set lock to avoid the horrors of queue preemption. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Waiman Long <Waiman.Long@hp.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Daniel J Blueman <daniel@numascale.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Douglas Hatch <doug.hatch@hp.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paolo Bonzini <paolo.bonzini@gmail.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Rik van Riel <riel@redhat.com> Cc: Scott J Norton <scott.norton@hp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: virtualization@lists.linux-foundation.org Cc: xen-devel@lists.xenproject.org Link: http://lkml.kernel.org/r/1429901803-29771-8-git-send-email-Waiman.Long@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-05-08 12:36:58 +02:00
..
bitops	arch: Mass conversion of smp_mb__*()	2014-04-18 14:20:48 +02:00
4level-fixup.h	mm, asm-generic: define PUD_SHIFT in <asm-generic/4level-fixup.h>	2015-02-11 17:06:03 -08:00
Kbuild.asm	UAPI: Set up uapi/asm/Kbuild.asm	2012-10-02 18:01:56 +01:00
atomic-long.h	…
atomic.h	locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()	2014-10-03 06:06:23 +02:00
atomic64.h	locking,arch: Rewrite generic atomic support	2014-08-14 12:48:14 +02:00
audit_change_attr.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
audit_dir_write.h	…
audit_read.h	…
audit_signal.h	…
audit_write.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
barrier.h	arch: Add lightweight memory barriers dma_rmb() and dma_wmb()	2014-12-11 21:15:06 -05:00
bitops.h	arch: Prepare for smp_mb__{before,after}_atomic()	2014-04-18 11:40:30 +02:00
bitsperlong.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
bug.h	bug: Make BUG() always stop the machine	2014-04-07 16:36:10 -07:00
bugs.h	…
cache.h	…
cacheflush.h	…
checksum.h	asm-generic headers: Allow yet more arch overrides in checksum.h	2013-02-11 20:00:33 +05:30
clkdev.h	asm-generic: COMMON_CLK defines __clk_{get,put}	2014-09-25 18:00:45 -07:00
cmpxchg-local.h	LLVMLinux: Remove warning about returning an uninitialized variable	2014-04-09 13:44:35 -07:00
cmpxchg.h	asm-generic: move cmpxchg*_local defs to cmpxchg.h	2013-03-13 06:11:05 +01:00
cputime.h	cputime: Generic on-demand virtual cputime accounting	2013-01-27 19:23:27 +01:00
cputime_jiffies.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
cputime_nsecs.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
current.h	…
delay.h	…
device.h	…
div64.h	…
dma-coherent.h	DMA-API: Change dma_declare_coherent_memory() CPU address to phys_addr_t	2014-05-20 16:55:23 -06:00
dma-contiguous.h	asm-generic: Add dma-contiguous.h	2014-09-22 13:35:51 +02:00
dma-mapping-broken.h	asm-generic/dma-mapping-broken.h: Provide dma_alloc_attrs()/dma_free_attrs()	2012-12-25 20:14:54 +01:00
dma-mapping-common.h	asm/dma-mapping-common: Clarify output of dma_map_sg_attrs	2015-03-09 13:05:47 +01:00
dma.h	…
early_ioremap.h	mm: create generic early_ioremap() support	2014-04-07 16:36:15 -07:00
emergency-restart.h	…
exec.h	Split arch_align_stack() out from asm-generic/system.h	2012-03-28 18:30:03 +01:00
fb.h	…
fixmap.h	arm64: fixmap: fix missing sub-page offset for earlyprintk	2014-05-03 22:20:31 +01:00
ftrace.h	…
futex.h	asm-generic: add generic futex for !CONFIG_SMP	2014-12-08 12:55:48 +08:00
getorder.h	…
gpio.h	gpio: move pincontrol calls to <linux/gpio/driver.h>	2015-03-19 09:45:54 +01:00
hardirq.h	…
hugetlb.h	mm: Fix generic hugetlb pte check return type.	2013-10-02 20:02:35 -04:00
hw_irq.h	…
ide_iops.h	…
int-ll64.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
io-64-nonatomic-hi-lo.h	readq/writeq: Add explicit lo_hi_[read|write]_q and hi_lo_[read|write]_q	2014-07-04 13:27:30 +02:00
io-64-nonatomic-lo-hi.h	readq/writeq: Add explicit lo_hi_[read|write]_q and hi_lo_[read|write]_q	2014-07-04 13:27:30 +02:00
io.h	Merge branch 'io' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into asm-generic	2014-11-11 19:55:45 +01:00
ioctl.h	include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error	2014-06-06 16:08:13 -07:00
iomap.h	Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP	2014-04-07 16:36:11 -07:00
irq.h	…
irq_regs.h	…
irq_work.h	irq_work: Introduce arch_irq_work_has_interrupt()	2014-09-13 18:38:07 +02:00
irqflags.h	…
kdebug.h	…
kmap_types.h	asm-generic: remove km_type definitions	2012-07-24 15:27:30 +08:00
kvm_para.h	KVM: add kvm_para_available to asm-generic/kvm_para.h	2013-06-05 13:21:29 +03:00
libata-portmap.h	…
linkage.h	…
local.h	…
local64.h	…
mcs_spinlock.h	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
memory_model.h	__page_to_pfn: Fix typo in comment	2013-10-14 15:28:29 +02:00
mm_hooks.h	mm: Make arch_unmap()/bprm_mm_init() available to all architectures	2014-11-19 11:54:13 +01:00
mmu.h	asm-generic/mmu.h: Add support for FDPIC	2012-12-09 23:14:14 +01:00
mmu_context.h	asm-generic: Remove asm-generic arch_bprm_mm_init()	2014-11-22 21:52:08 +01:00
module.h	Make most arch asm/module.h files use asm-generic/module.h	2012-09-28 14:31:03 +09:30
msi.h	asm-generic: Add msi.h	2014-11-23 13:01:47 +01:00
mutex-dec.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-null.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-xchg.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex.h	…
page.h	…
param.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
parport.h	include: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
pci-bridge.h	PCI: work around Stratus ftServer broken PCIe hierarchy	2012-04-30 15:21:02 -06:00
pci-dma-compat.h	pci-dma-compat: add pci_zalloc_consistent helper	2014-08-08 15:57:28 -07:00
pci.h	…
pci_iomap.h	pci: add pci_iomap_range	2015-01-21 16:28:49 +10:30
percpu.h	percpu: preffity percpu header files	2014-06-17 19:12:40 -04:00
pgalloc.h	…
pgtable-nopmd.h	…
pgtable-nopud.h	…
pgtable.h	mm: change vunmap to tear down huge KVA mappings	2015-04-14 16:49:04 -07:00
preempt.h	sched: Kill task_preempt_count()	2014-10-28 10:47:56 +01:00
ptrace.h	…
qrwlock.h	locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks	2014-06-06 07:58:28 +02:00
qrwlock_types.h	locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks	2014-06-06 07:58:28 +02:00
qspinlock.h	locking/qspinlock: Revert to test-and-set on hypervisors	2015-05-08 12:36:58 +02:00
qspinlock_types.h	locking/qspinlock: Optimize for smaller NR_CPUS	2015-05-08 12:36:48 +02:00
resource.h	asm-generic: remove _STK_LIM_MAX	2014-05-15 00:32:09 +01:00
rtc.h	…
rwsem.h	asm-generic: rwsem: de-PPCify rwsem.h	2014-03-14 18:02:08 +00:00
scatterlist.h	…
seccomp.h	seccomp: allow COMPAT sigreturn overrides	2015-04-17 09:04:09 -04:00
sections.h	nosave: consolidate __nosave_{begin,end} in <asm/sections.h>	2014-10-09 22:26:04 -04:00
segment.h	…
serial.h	…
siginfo.h	constify copy_siginfo_to_user{,32}()	2013-11-09 00:16:29 -05:00
signal.h	unify default ptrace_signal_deliver	2012-11-29 00:01:23 -05:00
simd.h	crypto: create generic version of ablk_helper	2013-09-24 06:02:24 +10:00
sizes.h	ARM: 7430/1: sizes.h: move from asm-generic to <linux/sizes.h>	2012-06-28 17:14:34 +01:00
spinlock.h	…
statfs.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
string.h	…
switch_to.h	Split the switch_to() wrapper out of asm-generic/system.h	2012-03-28 18:30:03 +01:00
syscall.h	syscall.h: fix doc text for syscall_get_arch()	2014-09-23 16:20:00 -04:00
syscalls.h	burying unused conditionals	2013-02-14 09:21:15 -05:00
termios-base.h	…
termios.h	UAPI: (Scripted) Disintegrate include/asm-generic	2012-10-04 18:20:15 +01:00
timex.h	…
tlb.h	mm: mmu_gather: use tlb->end != 0 only for TLB invalidation	2015-01-13 15:20:40 +13:00
tlbflush.h	…
topology.h	…
trace_clock.h	tracing,x86: Add a TSC trace_clock	2012-11-13 15:48:27 -05:00
uaccess-unaligned.h	…
uaccess.h	asm-generic: uaccess: Spelling s/a ny/any/	2014-01-02 10:45:23 +01:00
unaligned.h	asm-generic: allow generic unaligned access if the arch supports it	2014-05-08 10:22:23 +02:00
unistd.h	We get rid of the general module prefix confusion with a binary config option,	2013-05-05 10:58:06 -07:00
user.h	…
vga.h	…
vmlinux.lds.h	TTY/Serial patches for 4.1-rc1	2015-04-21 09:33:10 -07:00
vtime.h	include/asm-generic/vtime.h: avoid zero-length file	2013-09-30 14:31:02 -07:00
word-at-a-time.h	word-at-a-time: simplify big-endian zero_bytemask macro	2014-05-01 08:57:44 -07:00
xor.h	asm-generic: xor: mark static functions as __maybe_unused	2012-10-03 21:21:06 +02:00