add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/parisc/kernel/unwind.c
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..
@@ -42,7 +42,7 @@
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  * we can call unwind_init as early in the bootup process as 
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  * possible (before the slab allocator is initialized)
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  */
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-static struct unwind_table kernel_unwind_table __read_mostly;
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+static struct unwind_table kernel_unwind_table __ro_after_init;
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 static LIST_HEAD(unwind_tables);
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 static inline const struct unwind_table_entry *