modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/arch/s390/include/asm/preempt.h
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@@ -8,6 +8,8 @@
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 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
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+/* We use the MSB mostly because its available */
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+#define PREEMPT_NEED_RESCHED	0x80000000
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 #define PREEMPT_ENABLED	(0 + PREEMPT_NEED_RESCHED)
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 static inline int preempt_count(void)
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@@ -27,12 +29,6 @@
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 				  old, new) != old);
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 }
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-#define init_task_preempt_count(p)	do { } while (0)
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-
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-#define init_idle_preempt_count(p, cpu)	do { \
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-	S390_lowcore.preempt_count = PREEMPT_ENABLED; \
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-} while (0)
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-
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 static inline void set_preempt_need_resched(void)
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 {
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 	__atomic_and(~PREEMPT_NEED_RESCHED, &S390_lowcore.preempt_count);
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@@ -50,10 +46,17 @@
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 static inline void __preempt_count_add(int val)
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 {
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-	if (__builtin_constant_p(val) && (val >= -128) && (val <= 127))
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-		__atomic_add_const(val, &S390_lowcore.preempt_count);
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-	else
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-		__atomic_add(val, &S390_lowcore.preempt_count);
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+	/*
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+	 * With some obscure config options and CONFIG_PROFILE_ALL_BRANCHES
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+	 * enabled, gcc 12 fails to handle __builtin_constant_p().
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+	 */
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+	if (!IS_ENABLED(CONFIG_PROFILE_ALL_BRANCHES)) {
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+		if (__builtin_constant_p(val) && (val >= -128) && (val <= 127)) {
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+			__atomic_add_const(val, &S390_lowcore.preempt_count);
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+			return;
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+		}
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+	}
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+	__atomic_add(val, &S390_lowcore.preempt_count);
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 }
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 static inline void __preempt_count_sub(int val)
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@@ -85,12 +88,6 @@
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 {
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 	S390_lowcore.preempt_count = pc;
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 }
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-
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-#define init_task_preempt_count(p)	do { } while (0)
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-
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-#define init_idle_preempt_count(p, cpu)	do { \
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-	S390_lowcore.preempt_count = PREEMPT_ENABLED; \
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-} while (0)
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 static inline void set_preempt_need_resched(void)
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 {
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@@ -128,11 +125,15 @@
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 #endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
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-#ifdef CONFIG_PREEMPT
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+#define init_task_preempt_count(p)	do { } while (0)
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+/* Deferred to CPU bringup time */
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+#define init_idle_preempt_count(p, cpu)	do { } while (0)
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+
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+#ifdef CONFIG_PREEMPTION
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 extern asmlinkage void preempt_schedule(void);
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 #define __preempt_schedule() preempt_schedule()
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 extern asmlinkage void preempt_schedule_notrace(void);
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 #define __preempt_schedule_notrace() preempt_schedule_notrace()
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-#endif /* CONFIG_PREEMPT */
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+#endif /* CONFIG_PREEMPTION */
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 #endif /* __ASM_PREEMPT_H */