Two NOP5 are really a good tradeoff vs. the unholy IDT switching mess, which duplicates code all over the place. Signed-off-by: Thomas Gleixner Reviewed-by: Steven Rostedt (VMware) --- arch/x86/include/asm/hw_irq.h | 2 +- arch/x86/kernel/irq.c | 25 +++++-------------------- 2 files changed, 6 insertions(+), 21 deletions(-) --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -48,7 +48,6 @@ extern asmlinkage void call_function_sin #ifdef CONFIG_TRACING /* Interrupt handlers registered during init_IRQ */ -extern void trace_x86_platform_ipi(void); extern void trace_error_interrupt(void); extern void trace_irq_work_interrupt(void); extern void trace_spurious_interrupt(void); @@ -58,6 +57,7 @@ extern void trace_threshold_interrupt(vo extern void trace_deferred_error_interrupt(void); extern void trace_call_function_interrupt(void); extern void trace_call_function_single_interrupt(void); +#define trace_x86_platform_ipi x86_platform_ipi #define trace_apic_timer_interrupt apic_timer_interrupt #define trace_irq_move_cleanup_interrupt irq_move_cleanup_interrupt #define trace_reboot_interrupt reboot_interrupt --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -262,20 +262,16 @@ u64 arch_irq_stat(void) /* * Handler for X86_PLATFORM_IPI_VECTOR. */ -void __smp_x86_platform_ipi(void) -{ - inc_irq_stat(x86_platform_ipis); - - if (x86_platform_ipi_callback) - x86_platform_ipi_callback(); -} - __visible void __irq_entry smp_x86_platform_ipi(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); entering_ack_irq(); - __smp_x86_platform_ipi(); + trace_x86_platform_ipi_entry(X86_PLATFORM_IPI_VECTOR); + inc_irq_stat(x86_platform_ipis); + if (x86_platform_ipi_callback) + x86_platform_ipi_callback(); + trace_x86_platform_ipi_exit(X86_PLATFORM_IPI_VECTOR); exiting_irq(); set_irq_regs(old_regs); } @@ -334,17 +330,6 @@ EXPORT_SYMBOL_GPL(kvm_set_posted_intr_wa } #endif -__visible void __irq_entry smp_trace_x86_platform_ipi(struct pt_regs *regs) -{ - struct pt_regs *old_regs = set_irq_regs(regs); - - entering_ack_irq(); - trace_x86_platform_ipi_entry(X86_PLATFORM_IPI_VECTOR); - __smp_x86_platform_ipi(); - trace_x86_platform_ipi_exit(X86_PLATFORM_IPI_VECTOR); - exiting_irq(); - set_irq_regs(old_regs); -} #ifdef CONFIG_HOTPLUG_CPU