rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/arch/arm64/include/asm/thread_info.h
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@@ -43,6 +43,7 @@
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 	u64			ttbr0;		/* saved TTBR0_EL1 */
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 #endif
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 	int			preempt_count;	/* 0 => preemptable, <0 => bug */
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+	int                     preempt_lazy_count; /* 0 => preemptable, <0 => bug */
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 #ifdef CONFIG_SHADOW_CALL_STACK
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 	void			*shadow_call_stack;
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 #endif
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@@ -79,6 +80,7 @@
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 #define TIF_FOREIGN_FPSTATE	3	/* CPU's FP state is not current's */
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 #define TIF_UPROBE		4	/* uprobe breakpoint or singlestep */
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 #define TIF_FSCHECK		5	/* Check FS is USER_DS on return */
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+#define TIF_NEED_RESCHED_LAZY	6
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 #define TIF_NOHZ		7
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 #define TIF_SYSCALL_TRACE	8
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 #define TIF_SYSCALL_AUDIT	9
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@@ -98,6 +100,7 @@
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 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
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 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
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 #define _TIF_FOREIGN_FPSTATE	(1 << TIF_FOREIGN_FPSTATE)
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+#define _TIF_NEED_RESCHED_LAZY	(1 << TIF_NEED_RESCHED_LAZY)
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 #define _TIF_NOHZ		(1 << TIF_NOHZ)
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 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
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 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
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@@ -111,8 +114,9 @@
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 #define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
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 				 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
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-				 _TIF_UPROBE | _TIF_FSCHECK)
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+				 _TIF_UPROBE | _TIF_FSCHECK | _TIF_NEED_RESCHED_LAZY)
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+#define _TIF_NEED_RESCHED_MASK	(_TIF_NEED_RESCHED | _TIF_NEED_RESCHED_LAZY)
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 #define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
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 				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
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 				 _TIF_NOHZ)