From daabb8eb9a55af90d0a55d93547a51cc6921389f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 28 Aug 2017 08:47:27 +0200 Subject: [PATCH] x86/irqwork: Get rid of duplicated tracing interrupt code Two NOP5s are a reasonable tradeoff to avoid duplicated code and the requirement to switch the IDT. Signed-off-by: Thomas Gleixner Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/20170828064957.064746737@linutronix.de Signed-off-by: Ingo Molnar --- arch/x86/include/asm/hw_irq.h | 2 +- arch/x86/kernel/irq_work.c | 16 ++-------------- 2 files changed, 3 insertions(+), 15 deletions(-) diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index b094b877b294..fd7e7e67ff79 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -48,13 +48,13 @@ extern asmlinkage void call_function_single_interrupt(void); #ifdef CONFIG_TRACING /* Interrupt handlers registered during init_IRQ */ -extern void trace_irq_work_interrupt(void); extern void trace_thermal_interrupt(void); extern void trace_reschedule_interrupt(void); extern void trace_threshold_interrupt(void); extern void trace_deferred_error_interrupt(void); extern void trace_call_function_interrupt(void); extern void trace_call_function_single_interrupt(void); +#define trace_irq_work_interrupt irq_work_interrupt #define trace_error_interrupt error_interrupt #define trace_spurious_interrupt spurious_interrupt #define trace_x86_platform_ipi x86_platform_ipi diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c index 275487872be2..8054caee401f 100644 --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -11,24 +11,12 @@ #include #include -static inline void __smp_irq_work_interrupt(void) -{ - inc_irq_stat(apic_irq_work_irqs); - irq_work_run(); -} - __visible void __irq_entry smp_irq_work_interrupt(struct pt_regs *regs) -{ - ipi_entering_ack_irq(); - __smp_irq_work_interrupt(); - exiting_irq(); -} - -__visible void __irq_entry smp_trace_irq_work_interrupt(struct pt_regs *regs) { ipi_entering_ack_irq(); trace_irq_work_entry(IRQ_WORK_VECTOR); - __smp_irq_work_interrupt(); + inc_irq_stat(apic_irq_work_irqs); + irq_work_run(); trace_irq_work_exit(IRQ_WORK_VECTOR); exiting_irq(); } -- 2.20.1