rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/include/linux/mm_types.h
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@@ -12,6 +12,7 @@
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 #include <linux/completion.h>
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 #include <linux/cpumask.h>
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 #include <linux/uprobes.h>
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+#include <linux/rcupdate.h>
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 #include <linux/page-flags-layout.h>
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 #include <linux/workqueue.h>
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 #include <linux/android_kabi.h>
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@@ -500,6 +501,9 @@
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 		bool tlb_flush_batched;
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 #endif
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 		struct uprobes_state uprobes_state;
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+#ifdef CONFIG_PREEMPT_RT_BASE
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+		struct rcu_head delayed_drop;
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+#endif
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 #ifdef CONFIG_HUGETLB_PAGE
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 		atomic_long_t hugetlb_usage;
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 #endif