add at24 driver

hc

2023-11-06 15ade055295d13f95d49e3d99b09f3bbfb4a43e7

 kernel/arch/arm/include/asm/switch_to.h
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@@ -4,6 +4,13 @@
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 #include <linux/thread_info.h>
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+#if defined CONFIG_PREEMPT_RT_FULL && defined CONFIG_HIGHMEM
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+void switch_kmaps(struct task_struct *prev_p, struct task_struct *next_p);
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+#else
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+static inline void
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+switch_kmaps(struct task_struct *prev_p, struct task_struct *next_p) { }
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+#endif
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+
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 /*
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  * For v7 SMP cores running a preemptible kernel we may be pre-empted
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  * during a TLB maintenance operation, so execute an inner-shareable dsb
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@@ -26,6 +33,7 @@
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 #define switch_to(prev,next,last)					\
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 do {									\
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 	__complete_pending_tlbi();					\
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+	switch_kmaps(prev, next);					\
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 	last = __switch_to(prev,task_thread_info(prev), task_thread_info(next));	\
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 } while (0)
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