rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/mm/highmem.c
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@@ -30,9 +30,10 @@
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 #include <linux/kgdb.h>
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 #include <asm/tlbflush.h>
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-
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+#ifndef CONFIG_PREEMPT_RT_FULL
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 #if defined(CONFIG_HIGHMEM) || defined(CONFIG_X86_32)
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 DEFINE_PER_CPU(int, __kmap_atomic_idx);
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+#endif
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 #endif
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 /*
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@@ -108,8 +109,9 @@
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 unsigned long totalhigh_pages __read_mostly;
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 EXPORT_SYMBOL(totalhigh_pages);
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-
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+#ifndef CONFIG_PREEMPT_RT_FULL
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 EXPORT_PER_CPU_SYMBOL(__kmap_atomic_idx);
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+#endif
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 unsigned int nr_free_highpages (void)
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 {