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x86/irq: Get rid of duplicated trace_x86_platform_ipi() code 

Two NOP5s are really a good tradeoff vs. the unholy IDT switching mess,
which duplicates code all over the place.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170828064956.907209383@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner 2017-08-28 08:47:25 +02:00 committed by Ingo Molnar
parent 3bec6def39
commit 8a17116b1f
2 changed files with 6 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/hw_irq.h
View File

@ -48,7 +48,6 @@ extern asmlinkage void call_function_single_interrupt(void);
#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(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_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

25
arch/x86/kernel/irq.c
View File

@ -262,20 +262,16 @@ __visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
/*
* 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 @@ __visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs)
}
#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