kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/tools/arch/x86/include/asm/barrier.h
..
..
@@ -21,9 +21,26 @@
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 #define rmb()	asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
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 #define wmb()	asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
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 #elif defined(__x86_64__)
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-#define mb() 	asm volatile("mfence":::"memory")
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-#define rmb()	asm volatile("lfence":::"memory")
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+#define mb()	asm volatile("mfence" ::: "memory")
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+#define rmb()	asm volatile("lfence" ::: "memory")
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 #define wmb()	asm volatile("sfence" ::: "memory")
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+#define smp_rmb() barrier()
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+#define smp_wmb() barrier()
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+#define smp_mb()  asm volatile("lock; addl $0,-132(%%rsp)" ::: "memory", "cc")
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 #endif
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+#if defined(__x86_64__)
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+#define smp_store_release(p, v)			\
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+do {						\
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+	barrier();				\
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+	WRITE_ONCE(*p, v);			\
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+} while (0)
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+
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+#define smp_load_acquire(p)			\
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+({						\
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+	typeof(*p) ___p1 = READ_ONCE(*p);	\
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+	barrier();				\
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+	___p1;					\
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+})
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+#endif /* defined(__x86_64__) */
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 #endif /* _TOOLS_LINUX_ASM_X86_BARRIER_H */