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linux/include/asm-generic
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Konstantin Khlebnikov fe32d3cd5e sched/preempt: Fix cond_resched_lock() and cond_resched_softirq() 
These functions check should_resched() before unlocking spinlock/bh-enable:
preempt_count always non-zero => should_resched() always returns false.
cond_resched_lock() worked iff spin_needbreak is set.

This patch adds argument "preempt_offset" to should_resched().

preempt_count offset constants for that:

  PREEMPT_DISABLE_OFFSET  - offset after preempt_disable()
  PREEMPT_LOCK_OFFSET     - offset after spin_lock()
  SOFTIRQ_DISABLE_OFFSET  - offset after local_bh_distable()
  SOFTIRQ_LOCK_OFFSET     - offset after spin_lock_bh()

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: bdb4380658 ("sched: Extract the basic add/sub preempt_count modifiers")
Link: http://lkml.kernel.org/r/20150715095204.12246.98268.stgit@buzz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-03 12:21:24 +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
asm-offsets.h
asm-generic: Add common asm-offsets.h
2015-06-23 13:35:49 +09:00
atomic64.h
locking,arch: Rewrite generic atomic support
2014-08-14 12:48:14 +02:00
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
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: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
audit_read.h
audit: support the "standard" <asm-generic/unistd.h>
2011-05-04 14:41:28 -04:00
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
Merge tag 'arc-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
2015-07-01 09:24:26 -07:00
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
asm-generic/cacheflush.h: flush icache when copying to user pages
2011-05-25 08:39:37 -07:00
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
locking/rtmutex: Drop usage of __HAVE_ARCH_CMPXCHG
2015-05-13 10:51:28 +02:00
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
cputime.h
cputime: Generic on-demand virtual cputime accounting
2013-01-27 19:23:27 +01:00
current.h
…
delay.h
asm-generic: delay.h fix udelay and ndelay for 8 bit args
2011-07-22 18:45:33 +02:00
device.h
Driver Core: Add platform device arch data V3
2009-07-22 00:28:38 +02:00
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
asm-generic headers: add ftrace.h
2011-03-17 09:19:04 +08:00
futex.h
sched/preempt, futex: Disable preemption in UP futex_atomic_cmpxchg_inatomic() explicitly
2015-05-19 08:39:16 +02:00
getorder.h
bitops: Add missing parentheses to new get_order macro
2012-02-24 10:39:27 -08:00
gpio.h
gpio: remove gpiod_sysfs_set_active_low
2015-05-12 10:46:53 +02:00
hardirq.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
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
x86/mm, asm-generic: Add ioremap_wt() for creating Write-Through mappings
2015-06-07 15:28:56 +02:00
ioctl.h
include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error
2014-06-06 16:08:13 -07:00
iomap.h
x86/mm, asm-generic: Add ioremap_wt() for creating Write-Through mappings
2015-06-07 15:28:56 +02:00
irq_regs.h
core: Replace __get_cpu_var with __this_cpu_read if not used for an address.
2010-12-17 15:07:19 +01:00
irq_work.h
irq_work: Introduce arch_irq_work_has_interrupt()
2014-09-13 18:38:07 +02:00
irq.h
…
irqflags.h
Fix IRQ flag handling naming
2010-10-07 14:08:55 +01:00
Kbuild.asm
UAPI: Set up uapi/asm/Kbuild.asm
2012-10-02 18:01:56 +01:00
kdebug.h
asm-generic: kdebug.h: Checkpatch cleanup
2010-10-09 21:51:44 +02:00
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
…
local64.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
local.h
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
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_context.h
asm-generic: Remove asm-generic arch_bprm_mm_init()
2014-11-22 21:52:08 +01:00
mmu.h
asm-generic/mmu.h: Add support for FDPIC
2012-12-09 23:14:14 +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
Merge tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
2012-01-10 17:39:40 -08:00
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_iomap.h
pci: add pci_iomap_range
2015-01-21 16:28:49 +10:30
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: Remove unused pcibios_select_root() (again)
2015-06-08 07:56:21 -05:00
percpu.h
percpu: preffity percpu header files
2014-06-17 19:12:40 -04:00
pgalloc.h
…
pgtable-nopmd.h
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
2009-07-27 12:10:38 -07:00
pgtable-nopud.h
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
2009-07-27 12:10:38 -07:00
pgtable.h
mm: clarify that the function operates on hugepage pte
2015-06-24 17:49:44 -07:00
preempt.h
sched/preempt: Fix cond_resched_lock() and cond_resched_softirq()
2015-08-03 12:21:24 +02:00
ptrace.h
asm-generic/ptrace.h: start a common low level ptrace helper
2011-05-26 17:12:36 -07:00
qrwlock_types.h
locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks
2014-06-06 07:58:28 +02:00
qrwlock.h
locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks
2014-06-06 07:58:28 +02:00
qspinlock_types.h
locking/qspinlock: Optimize for smaller NR_CPUS
2015-05-08 12:36:48 +02:00
qspinlock.h
locking/qspinlock: Revert to test-and-set on hypervisors
2015-05-08 12:36:58 +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
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
BUG: headers with BUG/BUG_ON etc. need linux/bug.h
2012-03-04 17:54:34 -05:00
topology.h
topology: alternate fix for ia64 tiger_defconfig build breakage
2010-08-09 20:44:57 -07:00
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
Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
2013-05-05 10:58:06 -07:00
user.h
asm-generic/user.h: Fix spelling in comment
2011-03-01 15:49:39 +01:00
vga.h
…
vmlinux.lds.h
Merge tag 'tty-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
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