irq_work: Introduce arch_irq_work_has_interrupt()
commit c5c38ef3d70377dc504a6a3f611a3ec814bc757b upstream.
The nohz full code needs irq work to trigger its own interrupt so that
the subsystem can work even when the tick is stopped.
Lets introduce arch_irq_work_has_interrupt() that archs can override to
tell about their support for this ability.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
diff --git a/arch/alpha/include/asm/Kbuild b/arch/alpha/include/asm/Kbuild
index a73a8e2..aca4359 100644
--- a/arch/alpha/include/asm/Kbuild
+++ b/arch/alpha/include/asm/Kbuild
@@ -5,3 +5,4 @@
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild
index 0d33629..1c828e4 100644
--- a/arch/arc/include/asm/Kbuild
+++ b/arch/arc/include/asm/Kbuild
@@ -18,6 +18,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kmap_types.h
generic-y += kvm_para.h
generic-y += local.h
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index 3278afe..0657adc 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -10,6 +10,7 @@
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += local.h
generic-y += local64.h
diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
index 71c53ec..285c0c1 100644
--- a/arch/arm64/include/asm/Kbuild
+++ b/arch/arm64/include/asm/Kbuild
@@ -17,6 +17,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/arch/avr32/include/asm/Kbuild b/arch/avr32/include/asm/Kbuild
index c7c64a6..83b594e 100644
--- a/arch/avr32/include/asm/Kbuild
+++ b/arch/avr32/include/asm/Kbuild
@@ -9,6 +9,7 @@
generic-y += futex.h
generic-y += preempt.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += param.h
generic-y += local.h
generic-y += local64.h
diff --git a/arch/blackfin/include/asm/Kbuild b/arch/blackfin/include/asm/Kbuild
index 359d36f..c80efff 100644
--- a/arch/blackfin/include/asm/Kbuild
+++ b/arch/blackfin/include/asm/Kbuild
@@ -14,6 +14,7 @@
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
index d73bb85..2250450 100644
--- a/arch/c6x/include/asm/Kbuild
+++ b/arch/c6x/include/asm/Kbuild
@@ -21,6 +21,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += local.h
diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild
index f3fd876..05c068a 100644
--- a/arch/cris/include/asm/Kbuild
+++ b/arch/cris/include/asm/Kbuild
@@ -14,3 +14,4 @@
generic-y += vga.h
generic-y += xor.h
generic-y += preempt.h
+generic-y += irq_work.h
diff --git a/arch/frv/include/asm/Kbuild b/arch/frv/include/asm/Kbuild
index bc42f14..9467583 100644
--- a/arch/frv/include/asm/Kbuild
+++ b/arch/frv/include/asm/Kbuild
@@ -4,3 +4,4 @@
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
index 38ca45d..42490ec 100644
--- a/arch/hexagon/include/asm/Kbuild
+++ b/arch/hexagon/include/asm/Kbuild
@@ -23,6 +23,7 @@
generic-y += iomap.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += local64.h
diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild
index 283a831..0007e55 100644
--- a/arch/ia64/include/asm/Kbuild
+++ b/arch/ia64/include/asm/Kbuild
@@ -3,6 +3,7 @@
generic-y += exec.h
generic-y += kvm_para.h
generic-y += trace_clock.h
+generic-y += irq_work.h
generic-y += preempt.h
generic-y += vtime.h
generic-y += hash.h
diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild
index 932435a..afd0830 100644
--- a/arch/m32r/include/asm/Kbuild
+++ b/arch/m32r/include/asm/Kbuild
@@ -5,3 +5,4 @@
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/m68k/include/asm/Kbuild b/arch/m68k/include/asm/Kbuild
index 6fb9e81..bb51ed1 100644
--- a/arch/m68k/include/asm/Kbuild
+++ b/arch/m68k/include/asm/Kbuild
@@ -11,6 +11,7 @@
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/arch/metag/include/asm/Kbuild b/arch/metag/include/asm/Kbuild
index b716d80..d64c4a6 100644
--- a/arch/metag/include/asm/Kbuild
+++ b/arch/metag/include/asm/Kbuild
@@ -18,6 +18,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild
index 2b98bc7..b8263e5 100644
--- a/arch/microblaze/include/asm/Kbuild
+++ b/arch/microblaze/include/asm/Kbuild
@@ -3,6 +3,7 @@
generic-y += clkdev.h
generic-y += exec.h
generic-y += hash.h
+generic-y += irq_work.h
generic-y += trace_clock.h
generic-y += syscalls.h
generic-y += preempt.h
diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index 2d7f650..e15b31a 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -15,3 +15,4 @@
generic-y += ucontext.h
generic-y += xor.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/mn10300/include/asm/Kbuild b/arch/mn10300/include/asm/Kbuild
index 992e989..76459a9 100644
--- a/arch/mn10300/include/asm/Kbuild
+++ b/arch/mn10300/include/asm/Kbuild
@@ -5,3 +5,4 @@
generic-y += hash.h
generic-y += trace_clock.h
generic-y += preempt.h
+generic-y += irq_work.h
diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild
index 2e40f1c..3bafc67 100644
--- a/arch/openrisc/include/asm/Kbuild
+++ b/arch/openrisc/include/asm/Kbuild
@@ -30,6 +30,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index 752c981..aa1a01e 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -4,6 +4,7 @@
segment.h topology.h vga.h device.h percpu.h hw_irq.h mutex.h \
div64.h irq_regs.h kdebug.h kvm_para.h local64.h local.h param.h \
poll.h xor.h clkdev.h exec.h
+generic-y += irq_work.h
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
index 6c0a955..80444f4 100644
--- a/arch/powerpc/include/asm/Kbuild
+++ b/arch/powerpc/include/asm/Kbuild
@@ -5,3 +5,4 @@
generic-y += preempt.h
generic-y += vtime.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild
index 8386a4a..7cb4ef1 100644
--- a/arch/s390/include/asm/Kbuild
+++ b/arch/s390/include/asm/Kbuild
@@ -4,3 +4,4 @@
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
+generic-y += irq_work.h
diff --git a/arch/score/include/asm/Kbuild b/arch/score/include/asm/Kbuild
index 146b9d5..9c630ea 100644
--- a/arch/score/include/asm/Kbuild
+++ b/arch/score/include/asm/Kbuild
@@ -7,4 +7,5 @@
generic-y += trace_clock.h
generic-y += xor.h
generic-y += preempt.h
+generic-y += irq_work.h
diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild
index 0cd7198..60037fd 100644
--- a/arch/sh/include/asm/Kbuild
+++ b/arch/sh/include/asm/Kbuild
@@ -11,6 +11,7 @@
generic-y += ioctl.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kvm_para.h
generic-y += local.h
generic-y += local64.h
diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 4b60a0c..abf1a73 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -10,6 +10,7 @@
generic-y += local64.h
generic-y += mutex.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += local.h
generic-y += module.h
generic-y += serial.h
diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild
index 3793c75..09699d5 100644
--- a/arch/tile/include/asm/Kbuild
+++ b/arch/tile/include/asm/Kbuild
@@ -16,6 +16,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += local.h
generic-y += local64.h
generic-y += msgbuf.h
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
index 88a330d..bd0b7a0 100644
--- a/arch/um/include/asm/Kbuild
+++ b/arch/um/include/asm/Kbuild
@@ -5,4 +5,5 @@
generic-y += trace_clock.h
generic-y += preempt.h
generic-y += hash.h
+generic-y += irq_work.h
generic-y += barrier.h
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
index 3ef4f9d..9c0dd43 100644
--- a/arch/unicore32/include/asm/Kbuild
+++ b/arch/unicore32/include/asm/Kbuild
@@ -21,6 +21,7 @@
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += local.h
diff --git a/arch/x86/include/asm/Kbuild b/arch/x86/include/asm/Kbuild
index 7f66985..1eb77ac 100644
--- a/arch/x86/include/asm/Kbuild
+++ b/arch/x86/include/asm/Kbuild
@@ -5,3 +5,4 @@
genhdr-y += unistd_x32.h
generic-y += clkdev.h
+generic-y += irq_work.h
diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
index 0a337e4..b749817 100644
--- a/arch/xtensa/include/asm/Kbuild
+++ b/arch/xtensa/include/asm/Kbuild
@@ -11,6 +11,7 @@
generic-y += hardirq.h
generic-y += ioctl.h
generic-y += irq_regs.h
+generic-y += irq_work.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += kvm_para.h
diff --git a/include/asm-generic/irq_work.h b/include/asm-generic/irq_work.h
new file mode 100644
index 0000000..a44f452
--- /dev/null
+++ b/include/asm-generic/irq_work.h
@@ -0,0 +1,10 @@
+#ifndef __ASM_IRQ_WORK_H
+#define __ASM_IRQ_WORK_H
+
+static inline bool arch_irq_work_has_interrupt(void)
+{
+ return false;
+}
+
+#endif /* __ASM_IRQ_WORK_H */
+
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index 60c19ee..c5106ed 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -36,6 +36,8 @@
void irq_work_sync(struct irq_work *work);
#ifdef CONFIG_IRQ_WORK
+#include <asm/irq_work.h>
+
bool irq_work_needs_cpu(void);
#else
static inline bool irq_work_needs_cpu(void) { return false; }