powerpc/irq: Replace #ifdefs by IS_ENABLED()

Replace
  #ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG and
  #ifdef CONFIG_PERF_EVENTS
by IS_ENABLED() in hw_irq.h and plpar_wrappers.h
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c1ded642f8d9002767f8fed48ed6d1e76254ed73.1652862729.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/hw_irq.h

@@ -123,7 +123,6 @@ static inline notrace unsigned long irq_soft_mask_return(void)
  */
 static inline notrace void irq_soft_mask_set(unsigned long mask)
 {
-#ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG
 	/*
 	 * The irq mask must always include the STD bit if any are set.
 	 *
@@ -138,8 +137,8 @@ static inline notrace void irq_soft_mask_set(unsigned long mask)
 	 * unmasks to be replayed, among other things. For now, take
 	 * the simple approach.
 	 */
-	WARN_ON(mask && !(mask & IRQS_DISABLED));
-#endif
+	if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
+		WARN_ON(mask && !(mask & IRQS_DISABLED));
 
 	WRITE_ONCE(local_paca->irq_soft_mask, mask);
 	barrier();
@@ -324,11 +323,13 @@ bool power_pmu_wants_prompt_pmi(void);
  */
 static inline bool should_hard_irq_enable(void)
 {
-#ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG
-	WARN_ON(irq_soft_mask_return() == IRQS_ENABLED);
-	WARN_ON(mfmsr() & MSR_EE);
-#endif
-#ifdef CONFIG_PERF_EVENTS
+	if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) {
+		WARN_ON(irq_soft_mask_return() == IRQS_ENABLED);
+		WARN_ON(mfmsr() & MSR_EE);
+	}
+
+	if (!IS_ENABLED(CONFIG_PERF_EVENTS))
+		return false;
 	/*
 	 * If the PMU is not running, there is not much reason to enable
 	 * MSR[EE] in irq handlers because any interrupts would just be
@@ -343,9 +344,6 @@ static inline bool should_hard_irq_enable(void)
 		return false;
 
 	return true;
-#else
-	return false;
-#endif
 }
 
 /*
@@ -353,11 +351,11 @@ static inline bool should_hard_irq_enable(void)
  */
 static inline void do_hard_irq_enable(void)
 {
-#ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG
-	WARN_ON(irq_soft_mask_return() == IRQS_ENABLED);
-	WARN_ON(get_paca()->irq_happened & PACA_IRQ_MUST_HARD_MASK);
-	WARN_ON(mfmsr() & MSR_EE);
-#endif
+	if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) {
+		WARN_ON(irq_soft_mask_return() == IRQS_ENABLED);
+		WARN_ON(get_paca()->irq_happened & PACA_IRQ_MUST_HARD_MASK);
+		WARN_ON(mfmsr() & MSR_EE);
+	}
 	/*
 	 * This allows PMI interrupts (and watchdog soft-NMIs) through.
 	 * There is no other reason to enable this way.

arch/powerpc/include/asm/plpar_wrappers.h

@@ -43,11 +43,10 @@ static inline long extended_cede_processor(unsigned long latency_hint)
 	set_cede_latency_hint(latency_hint);
 
 	rc = cede_processor();
-#ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG
+
 	/* Ensure that H_CEDE returns with IRQs on */
-	if (WARN_ON(!(mfmsr() & MSR_EE)))
+	if (WARN_ON(IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG) && !(mfmsr() & MSR_EE)))
 		__hard_irq_enable();
-#endif
 
 	set_cede_latency_hint(old_latency_hint);