Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq core changes from Ingo Molnar:
 "The biggest changes are the IRQ-work and printk changes from Frederic
  Weisbecker, which prepare the code for 'full dynticks' (the ability to
  stop or slow down the periodic tick arbitrarily, not just in idle time
  as today):

   - Don't stop tick with irq works pending.  This fix is generally
     useful and concerns archs that can't raise self IPIs.

   - Flush irq works before CPU offlining.

   - Introduce "lazy" irq works that can wait for the next tick to be
     executed, unless it's stopped.

   - Implement klogd wake up using irq work.  This removes the ad-hoc
     printk_tick()/printk_needs_cpu() hooks and make it working even in
     dynticks mode.

   - Cleanups and fixes."

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Export enable/disable_percpu_irq()
  arch Kconfig: Remove references to IRQ_PER_CPU
  irq_work: Remove return value from the irq_work_queue() function
  genirq: Avoid deadlock in spurious handling
  printk: Wake up klogd using irq_work
  irq_work: Make self-IPIs optable
  irq_work: Warn if there's still work on cpu_down
  irq_work: Flush work on CPU_DYING
  irq_work: Don't stop the tick with pending works
  nohz: Add API to check tick state
  irq_work: Remove CONFIG_HAVE_IRQ_WORK
  irq_work: Fix racy check on work pending flag
  irq_work: Fix racy IRQ_WORK_BUSY flag setting

14 files changed, 0 insertions, 22 deletions

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 9d5904cc7712..9b504af2e966 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -5,7 +5,6 @@ config ALPHA
         select HAVE_IDE
         select HAVE_OPROFILE
         select HAVE_SYSCALL_WRAPPERS
-        select HAVE_IRQ_WORK
         select HAVE_PCSPKR_PLATFORM
         select HAVE_PERF_EVENTS
         select HAVE_DMA_ATTRS
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 67874b82a4ed..9bbe760f2352 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -36,7 +36,6 @@ config ARM
         select HAVE_GENERIC_HARDIRQS
         select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
         select HAVE_IDE if PCI || ISA || PCMCIA
-        select HAVE_IRQ_WORK
         select HAVE_KERNEL_GZIP
         select HAVE_KERNEL_LZMA
         select HAVE_KERNEL_LZO
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f8f362aafee9..75e915b72471 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -21,7 +21,6 @@ config ARM64
         select HAVE_GENERIC_DMA_COHERENT
         select HAVE_GENERIC_HARDIRQS
         select HAVE_HW_BREAKPOINT if PERF_EVENTS
-        select HAVE_IRQ_WORK
         select HAVE_MEMBLOCK
         select HAVE_PERF_EVENTS
         select IRQ_DOMAIN
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index b6f3ad5441c5..67e4aaad78f5 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -24,7 +24,6 @@ config BLACKFIN
         select HAVE_FUNCTION_TRACER
         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
         select HAVE_IDE
-        select HAVE_IRQ_WORK
         select HAVE_KERNEL_GZIP if RAMKERNEL
         select HAVE_KERNEL_BZIP2 if RAMKERNEL
         select HAVE_KERNEL_LZMA if RAMKERNEL
@@ -38,7 +37,6 @@ config BLACKFIN
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_ATOMIC64
         select GENERIC_IRQ_PROBE
-        select IRQ_PER_CPU if SMP
         select USE_GENERIC_SMP_HELPERS if SMP
         select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
         select GENERIC_SMP_IDLE_THREAD
diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index 9d262645f667..17df48fc8f44 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -3,7 +3,6 @@ config FRV
         default y
         select HAVE_IDE
         select HAVE_ARCH_TRACEHOOK
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select HAVE_UID16
         select HAVE_GENERIC_HARDIRQS
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 0744f7d7b1fd..e4decc6b8947 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -12,9 +12,7 @@ config HEXAGON
         # select ARCH_WANT_OPTIONAL_GPIOLIB
         # select ARCH_REQUIRE_GPIOLIB
         # select HAVE_CLK
-        # select IRQ_PER_CPU
         # select GENERIC_PENDING_IRQ if SMP
-        select HAVE_IRQ_WORK
         select GENERIC_ATOMIC64
         select HAVE_PERF_EVENTS
         select HAVE_GENERIC_HARDIRQS
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 3279646120e3..00c2e88f7755 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -29,7 +29,6 @@ config IA64
         select ARCH_DISCARD_MEMBLOCK
         select GENERIC_IRQ_PROBE
         select GENERIC_PENDING_IRQ if SMP
-        select IRQ_PER_CPU
         select GENERIC_IRQ_SHOW
         select ARCH_WANT_OPTIONAL_GPIOLIB
         select ARCH_HAVE_NMI_SAFE_CMPXCHG
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2ac626ab9d43..9becc44d9d7a 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -4,7 +4,6 @@ config MIPS
         select HAVE_GENERIC_DMA_COHERENT
         select HAVE_IDE
         select HAVE_OPROFILE
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select PERF_USE_VMALLOC
         select HAVE_ARCH_KGDB
@@ -2161,7 +2160,6 @@ source "mm/Kconfig"
 config SMP
         bool "Multi-Processing support"
         depends on SYS_SUPPORTS_SMP
-        select IRQ_PER_CPU
         select USE_GENERIC_SMP_HELPERS
         help
           This enables support for systems with more than one CPU. If you have
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index b77feffbadea..a32e34ecda9e 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -9,14 +9,12 @@ config PARISC
         select RTC_DRV_GENERIC
         select INIT_ALL_POSSIBLE
         select BUG
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select GENERIC_ATOMIC64 if !64BIT
         select HAVE_GENERIC_HARDIRQS
         select BROKEN_RODATA
         select GENERIC_IRQ_PROBE
         select GENERIC_PCI_IOMAP
-        select IRQ_PER_CPU
         select ARCH_HAVE_NMI_SAFE_CMPXCHG
         select GENERIC_SMP_IDLE_THREAD
         select GENERIC_STRNCPY_FROM_USER
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 17903f1f356b..561ccca7b1a7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -118,14 +118,12 @@ config PPC
         select HAVE_SYSCALL_WRAPPERS if PPC64
         select GENERIC_ATOMIC64 if PPC32
         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select HAVE_REGS_AND_STACK_ACCESS_API
         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
         select HAVE_GENERIC_HARDIRQS
         select ARCH_WANT_IPC_PARSE_VERSION
         select SPARSE_IRQ
-        select IRQ_PER_CPU
         select IRQ_DOMAIN
         select GENERIC_IRQ_SHOW
         select GENERIC_IRQ_SHOW_LEVEL
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index b5ea38c25647..c15ba7d1be64 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -78,7 +78,6 @@ config S390
         select HAVE_KVM if 64BIT
         select HAVE_ARCH_TRACEHOOK
         select INIT_ALL_POSSIBLE
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select ARCH_HAVE_NMI_SAFE_CMPXCHG
         select HAVE_DEBUG_KMEMLEAK
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index babc2b826c5c..9c833c585871 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -11,7 +11,6 @@ config SUPERH
         select HAVE_ARCH_TRACEHOOK
         select HAVE_DMA_API_DEBUG
         select HAVE_DMA_ATTRS
-        select HAVE_IRQ_WORK
         select HAVE_PERF_EVENTS
         select HAVE_DEBUG_BUGVERBOSE
         select ARCH_HAVE_CUSTOM_GPIO_H
@@ -91,9 +90,6 @@ config GENERIC_CSUM
 config GENERIC_HWEIGHT
         def_bool y
 
-config IRQ_PER_CPU
-        def_bool y
-
 config GENERIC_GPIO
         def_bool n
 
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index cb9c333d74e8..9bff3db17c8c 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -23,7 +23,6 @@ config SPARC
         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
         select RTC_CLASS
         select RTC_DRV_M48T59
-        select HAVE_IRQ_WORK
         select HAVE_DMA_ATTRS
         select HAVE_DMA_API_DEBUG
         select HAVE_ARCH_JUMP_LABEL
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 225543bf45a5..36b05ed0bb3c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -28,7 +28,6 @@ config X86
         select HAVE_OPROFILE
         select HAVE_PCSPKR_PLATFORM
         select HAVE_PERF_EVENTS
-        select HAVE_IRQ_WORK
         select HAVE_IOREMAP_PROT
         select HAVE_KPROBES
         select HAVE_MEMBLOCK