x86 supports irq work when local apic is available. This is partly known on runtime so lets implement arch_irq_work_has_own_interrupt() accordingly.
This should be safely called after setup_arch(). Cc: Catalin Iacob <[email protected]> Cc: Dave Jones <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Paul E. McKenney <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Frederic Weisbecker <[email protected]> --- arch/x86/kernel/irq_work.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c index 54f60a2..b5f8fff 100644 --- a/arch/x86/kernel/irq_work.c +++ b/arch/x86/kernel/irq_work.c @@ -38,6 +38,11 @@ __visible void smp_trace_irq_work_interrupt(struct pt_regs *regs) exiting_irq(); } +int __init arch_irq_work_has_own_interrupt(void) +{ + return cpu_has_apic; +} + void arch_irq_work_raise(void) { if (!cpu_has_apic) -- 1.8.3.1 -- 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/
