x86/apic: Wrap IPI calls into helper functions

Move them to one place so the static call conversion gets simpler.

No functional change.

[ dhansen: merge against recent x86/apic changes ]

Signed-off-by: Thomas Gleixner <[e-mail]>
Signed-off-by: Dave Hansen <[e-mail]>
Acked-by: Peter Zijlstra (Intel) <[e-mail]>
Tested-by: Michael Kelley <[e-mail]>
Tested-by: Sohil Mehta <[e-mail]>
Tested-by: Juergen Gross <[e-mail]> # Xen PV (dom0 and unpriv. guest)

arch/x86/hyperv/hv_spinlock.c

···
 
 static void hv_qlock_kick(int cpu)
 {
-	apic->send_IPI(cpu, X86_PLATFORM_IPI_VECTOR);
+	__apic_send_IPI(cpu, X86_PLATFORM_IPI_VECTOR);
 }
 
 static void hv_qlock_wait(u8 *byte, u8 val)

arch/x86/include/asm/apic.h

···
 	apic->icr_write(low, high);
 }
 
+static __always_inline void __apic_send_IPI(int cpu, int vector)
+{
+	apic->send_IPI(cpu, vector);
+}
+
+static __always_inline void __apic_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+	apic->send_IPI_mask(mask, vector);
+}
+
+static __always_inline void __apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
+{
+	apic->send_IPI_mask_allbutself(mask, vector);
+}
+
+static __always_inline void __apic_send_IPI_allbutself(int vector)
+{
+	apic->send_IPI_allbutself(vector);
+}
+
+static __always_inline void __apic_send_IPI_all(int vector)
+{
+	apic->send_IPI_all(vector);
+}
+
+static __always_inline void __apic_send_IPI_self(int vector)
+{
+	apic->send_IPI_self(vector);
+}
+
 static __always_inline void apic_wait_icr_idle(void)
 {
 	if (apic->wait_icr_idle)

arch/x86/kernel/apic/apic.c

···
 static void lapic_timer_broadcast(const struct cpumask *mask)
 {
 #ifdef CONFIG_SMP
-	apic->send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
+	__apic_send_IPI_mask(mask, LOCAL_TIMER_VECTOR);
 #endif
 }
 

arch/x86/kernel/apic/hw_nmi.c

···
 #include <linux/init.h>
 #include <linux/delay.h>
 
+#include "local.h"
+
 #ifdef CONFIG_HARDLOCKUP_DETECTOR_PERF
 u64 hw_nmi_get_sample_period(int watchdog_thresh)
 {
···
 #ifdef arch_trigger_cpumask_backtrace
 static void nmi_raise_cpu_backtrace(cpumask_t *mask)
 {
-	apic->send_IPI_mask(mask, NMI_VECTOR);
+	__apic_send_IPI_mask(mask, NMI_VECTOR);
 }
 
 void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)

arch/x86/kernel/apic/ipi.c

···
 		return;
 
 	if (static_branch_likely(&apic_use_ipi_shorthand))
-		apic->send_IPI_allbutself(vector);
+		__apic_send_IPI_allbutself(vector);
 	else
-		apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
+		__apic_send_IPI_mask_allbutself(cpu_online_mask, vector);
 }
 
 /*
···
 		WARN(1, "sched: Unexpected reschedule of offline CPU#%d!\n", cpu);
 		return;
 	}
-	apic->send_IPI(cpu, RESCHEDULE_VECTOR);
+	__apic_send_IPI(cpu, RESCHEDULE_VECTOR);
 }
 
 void native_send_call_func_single_ipi(int cpu)
 {
-	apic->send_IPI(cpu, CALL_FUNCTION_SINGLE_VECTOR);
+	__apic_send_IPI(cpu, CALL_FUNCTION_SINGLE_VECTOR);
 }
 
 void native_send_call_func_ipi(const struct cpumask *mask)
···
 			goto sendmask;
 
 		if (cpumask_test_cpu(cpu, mask))
-			apic->send_IPI_all(CALL_FUNCTION_VECTOR);
+			__apic_send_IPI_all(CALL_FUNCTION_VECTOR);
 		else if (num_online_cpus() > 1)
-			apic->send_IPI_allbutself(CALL_FUNCTION_VECTOR);
+			__apic_send_IPI_allbutself(CALL_FUNCTION_VECTOR);
 		return;
 	}
 
 sendmask:
-	apic->send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
+	__apic_send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
 }
 
 #endif /* CONFIG_SMP */
···
  */
 void default_send_IPI_single(int cpu, int vector)
 {
-	apic->send_IPI_mask(cpumask_of(cpu), vector);
+	__apic_send_IPI_mask(cpumask_of(cpu), vector);
 }
 
 void default_send_IPI_allbutself(int vector)

arch/x86/kernel/apic/vector.c

···
 	unsigned long flags;
 
 	raw_spin_lock_irqsave(&vector_lock, flags);
-	apic->send_IPI(apicd->cpu, apicd->vector);
+	__apic_send_IPI(apicd->cpu, apicd->vector);
 	raw_spin_unlock_irqrestore(&vector_lock, flags);
 
 	return 1;

arch/x86/kernel/cpu/mce/inject.c

···
 					mce_irq_ipi, NULL, 0);
 				preempt_enable();
 			} else if (m->inject_flags & MCJ_NMI_BROADCAST)
-				apic->send_IPI_mask(mce_inject_cpumask,
-						NMI_VECTOR);
+				__apic_send_IPI_mask(mce_inject_cpumask, NMI_VECTOR);
 		}
 		start = jiffies;
 		while (!cpumask_empty(mce_inject_cpumask)) {

arch/x86/kernel/irq_work.c

···
 	if (!arch_irq_work_has_interrupt())
 		return;
 
-	apic->send_IPI_self(IRQ_WORK_VECTOR);
+	__apic_send_IPI_self(IRQ_WORK_VECTOR);
 	apic_wait_icr_idle();
 }
 #endif

arch/x86/kernel/nmi_selftest.c

···
 	/* sync above data before sending NMI */
 	wmb();
 
-	apic->send_IPI_mask(mask, NMI_VECTOR);
+	__apic_send_IPI_mask(mask, NMI_VECTOR);
 
 	/* Don't wait longer than a second */
 	timeout = USEC_PER_SEC;

arch/x86/kernel/smp.c

···
 			pr_emerg("Shutting down cpus with NMI\n");
 
 			for_each_cpu(cpu, &cpus_stop_mask)
-				apic->send_IPI(cpu, NMI_VECTOR);
+				__apic_send_IPI(cpu, NMI_VECTOR);
 		}
 		/*
 		 * Don't wait longer than 10 ms if the caller didn't

arch/x86/kvm/vmx/posted_intr.c

···
 	 * scheduled out).
 	 */
 	if (pi_test_on(&new))
-		apic->send_IPI_self(POSTED_INTR_WAKEUP_VECTOR);
+		__apic_send_IPI_self(POSTED_INTR_WAKEUP_VECTOR);
 
 	local_irq_restore(flags);
 }

arch/x86/kvm/vmx/vmx.c

···
 		 */
 
 		if (vcpu != kvm_get_running_vcpu())
-			apic->send_IPI_mask(get_cpu_mask(vcpu->cpu), pi_vec);
+			__apic_send_IPI_mask(get_cpu_mask(vcpu->cpu), pi_vec);
 		return;
 	}
 #endif

arch/x86/platform/uv/uv_nmi.c

···
 	for_each_cpu(cpu, uv_nmi_cpu_mask)
 		uv_cpu_nmi_per(cpu).pinging = 1;
 
-	apic->send_IPI_mask(uv_nmi_cpu_mask, APIC_DM_NMI);
+	__apic_send_IPI_mask(uv_nmi_cpu_mask, APIC_DM_NMI);
 }
 
 /* Clean up flags for CPU's that ignored both NMI and ping */