This optimization doesn't matter much. But this prepares the arch headers that we need to add a new API in order to detect when the arch can trigger self IPIs to implement the irq work.
This is necessary later to make printk working in nohz CPUs. Signed-off-by: Frederic Weisbecker <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Paul Gortmaker <[email protected]> --- arch/alpha/include/asm/irq_work.h | 6 ++++++ arch/arm/include/asm/irq_work.h | 1 + arch/arm64/include/asm/irq_work.h | 1 + arch/avr32/include/asm/irq_work.h | 1 + arch/blackfin/include/asm/irq_work.h | 1 + arch/c6x/include/asm/irq_work.h | 1 + arch/cris/include/asm/irq_work.h | 1 + arch/frv/include/asm/irq_work.h | 1 + arch/h8300/include/asm/irq_work.h | 1 + arch/hexagon/include/asm/irq_work.h | 1 + arch/ia64/include/asm/irq_work.h | 1 + arch/m32r/include/asm/irq_work.h | 1 + arch/m68k/include/asm/irq_work.h | 1 + arch/microblaze/include/asm/irq_work.h | 1 + arch/mips/include/asm/irq_work.h | 1 + arch/mn10300/include/asm/irq_work.h | 1 + arch/openrisc/include/asm/irq_work.h | 1 + arch/parisc/include/asm/irq_work.h | 1 + arch/powerpc/include/asm/irq_work.h | 6 ++++++ arch/s390/include/asm/irq_work.h | 1 + arch/score/include/asm/irq_work.h | 1 + arch/sh/include/asm/irq_work.h | 1 + arch/sparc/include/asm/irq_work.h | 6 ++++++ arch/tile/include/asm/irq_work.h | 1 + arch/um/include/asm/irq_work.h | 1 + arch/unicore32/include/asm/irq_work.h | 1 + arch/x86/include/asm/irq_work.h | 10 ++++++++++ arch/x86/kernel/irq_work.c | 4 ++-- arch/xtensa/include/asm/irq_work.h | 1 + include/asm-generic/irq_work.h | 9 +++++++++ include/linux/irq_work.h | 1 + kernel/irq_work.c | 7 ------- 32 files changed, 64 insertions(+), 9 deletions(-) create mode 100644 arch/alpha/include/asm/irq_work.h create mode 100644 arch/arm/include/asm/irq_work.h create mode 100644 arch/arm64/include/asm/irq_work.h create mode 100644 arch/avr32/include/asm/irq_work.h create mode 100644 arch/blackfin/include/asm/irq_work.h create mode 100644 arch/c6x/include/asm/irq_work.h create mode 100644 arch/cris/include/asm/irq_work.h create mode 100644 arch/frv/include/asm/irq_work.h create mode 100644 arch/h8300/include/asm/irq_work.h create mode 100644 arch/hexagon/include/asm/irq_work.h create mode 100644 arch/ia64/include/asm/irq_work.h create mode 100644 arch/m32r/include/asm/irq_work.h create mode 100644 arch/m68k/include/asm/irq_work.h create mode 100644 arch/microblaze/include/asm/irq_work.h create mode 100644 arch/mips/include/asm/irq_work.h create mode 100644 arch/mn10300/include/asm/irq_work.h create mode 100644 arch/openrisc/include/asm/irq_work.h create mode 100644 arch/parisc/include/asm/irq_work.h create mode 100644 arch/powerpc/include/asm/irq_work.h create mode 100644 arch/s390/include/asm/irq_work.h create mode 100644 arch/score/include/asm/irq_work.h create mode 100644 arch/sh/include/asm/irq_work.h create mode 100644 arch/sparc/include/asm/irq_work.h create mode 100644 arch/tile/include/asm/irq_work.h create mode 100644 arch/um/include/asm/irq_work.h create mode 100644 arch/unicore32/include/asm/irq_work.h create mode 100644 arch/x86/include/asm/irq_work.h create mode 100644 arch/xtensa/include/asm/irq_work.h create mode 100644 include/asm-generic/irq_work.h diff --git a/arch/alpha/include/asm/irq_work.h b/arch/alpha/include/asm/irq_work.h new file mode 100644 index 0000000..814ff3d --- /dev/null +++ b/arch/alpha/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef _ALPHA_IRQ_WORK_H +#define _ALPHA_IRQ_WORK_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/arm/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/arm64/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/avr32/include/asm/irq_work.h b/arch/avr32/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/avr32/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/blackfin/include/asm/irq_work.h b/arch/blackfin/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/blackfin/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/c6x/include/asm/irq_work.h b/arch/c6x/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/c6x/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/cris/include/asm/irq_work.h b/arch/cris/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/cris/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/frv/include/asm/irq_work.h b/arch/frv/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/frv/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/h8300/include/asm/irq_work.h b/arch/h8300/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/h8300/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/hexagon/include/asm/irq_work.h b/arch/hexagon/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/hexagon/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/ia64/include/asm/irq_work.h b/arch/ia64/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/ia64/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/m32r/include/asm/irq_work.h b/arch/m32r/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/m32r/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/m68k/include/asm/irq_work.h b/arch/m68k/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/m68k/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/microblaze/include/asm/irq_work.h b/arch/microblaze/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/microblaze/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/mips/include/asm/irq_work.h b/arch/mips/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/mips/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/mn10300/include/asm/irq_work.h b/arch/mn10300/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/mn10300/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/openrisc/include/asm/irq_work.h b/arch/openrisc/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/openrisc/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/parisc/include/asm/irq_work.h b/arch/parisc/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/parisc/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/powerpc/include/asm/irq_work.h b/arch/powerpc/include/asm/irq_work.h new file mode 100644 index 0000000..8b9927f --- /dev/null +++ b/arch/powerpc/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef _ASM_POWERPC_IRQ_WORK_H +#define _ASM_POWERPC_IRQ_WORK_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/s390/include/asm/irq_work.h b/arch/s390/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/s390/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/score/include/asm/irq_work.h b/arch/score/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/score/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/sh/include/asm/irq_work.h b/arch/sh/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/sh/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/sparc/include/asm/irq_work.h b/arch/sparc/include/asm/irq_work.h new file mode 100644 index 0000000..1d062a6 --- /dev/null +++ b/arch/sparc/include/asm/irq_work.h @@ -0,0 +1,6 @@ +#ifndef ___ASM_SPARC_IRQ_H +#define ___ASM_SPARC_IRQ_H + +extern void arch_irq_work_raise(void); + +#endif diff --git a/arch/tile/include/asm/irq_work.h b/arch/tile/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/tile/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/um/include/asm/irq_work.h b/arch/um/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/um/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/unicore32/include/asm/irq_work.h b/arch/unicore32/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/unicore32/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/arch/x86/include/asm/irq_work.h b/arch/x86/include/asm/irq_work.h new file mode 100644 index 0000000..38eed96 --- /dev/null +++ b/arch/x86/include/asm/irq_work.h @@ -0,0 +1,10 @@ +#ifndef _ASM_X86_IRQ_WORK_H +#define _ASM_X86_IRQ_WORK_H + +#ifndef CONFIG_X86_LOCAL_APIC +#include <asm-generic/irq_work.h> +# else +extern void arch_irq_work_raise(void); +#endif + +#endif diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c index ca8f703..95f5d4e 100644 --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -18,13 +18,13 @@ void smp_irq_work_interrupt(struct pt_regs *regs) irq_exit(); } +#ifdef CONFIG_X86_LOCAL_APIC void arch_irq_work_raise(void) { -#ifdef CONFIG_X86_LOCAL_APIC if (!cpu_has_apic) return; apic->send_IPI_self(IRQ_WORK_VECTOR); apic_wait_icr_idle(); -#endif } +#endif diff --git a/arch/xtensa/include/asm/irq_work.h b/arch/xtensa/include/asm/irq_work.h new file mode 100644 index 0000000..f1bffa2 --- /dev/null +++ b/arch/xtensa/include/asm/irq_work.h @@ -0,0 +1 @@ +#include <asm-generic/irq_work.h> diff --git a/include/asm-generic/irq_work.h b/include/asm-generic/irq_work.h new file mode 100644 index 0000000..a2d4108 --- /dev/null +++ b/include/asm-generic/irq_work.h @@ -0,0 +1,9 @@ +#ifndef __ASM_GENERIC_ATOMIC_H +#define __ASM_GENERIC_ATOMIC_H + +/* + * Lame architectures will get the timer tick callback + */ +static inline void arch_irq_work_raise(void) { } + +#endif diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 6a9e8f5..b39ea0b 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -2,6 +2,7 @@ #define _LINUX_IRQ_WORK_H #include <linux/llist.h> +#include <asm/irq_work.h> struct irq_work { unsigned long flags; diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 679c13e..d00011c 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -56,13 +56,6 @@ static bool irq_work_claim(struct irq_work *work) return true; } -void __weak arch_irq_work_raise(void) -{ - /* - * Lame architectures will get the timer tick callback - */ -} - /* * Queue the entry and raise the IPI if needed. */ -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
