kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/arch/openrisc/include/asm/cacheflush.h
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@@ -1,3 +1,4 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * OpenRISC Linux
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  *
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@@ -8,11 +9,6 @@
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  * OpenRISC implementation:
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  * Copyright (C) Jan Henrik Weinstock <jan.weinstock@rwth-aachen.de>
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  * et al.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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 #ifndef __ASM_CACHEFLUSH_H
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@@ -66,31 +62,12 @@
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 	clear_bit(PG_dc_clean, &page->flags);
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 }
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-/*
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- * Other interfaces are not required since we do not have virtually
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- * indexed or tagged caches. So we can use the default here.
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- */
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-#define flush_cache_all()				do { } while (0)
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-#define flush_cache_mm(mm)				do { } while (0)
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-#define flush_cache_dup_mm(mm)				do { } while (0)
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-#define flush_cache_range(vma, start, end)		do { } while (0)
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-#define flush_cache_page(vma, vmaddr, pfn)		do { } while (0)
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-#define flush_dcache_mmap_lock(mapping)			do { } while (0)
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-#define flush_dcache_mmap_unlock(mapping)		do { } while (0)
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-#define flush_icache_range(start, end)			do { } while (0)
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-#define flush_icache_page(vma, pg)			do { } while (0)
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-#define flush_icache_user_range(vma, pg, adr, len)	do { } while (0)
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-#define flush_cache_vmap(start, end)			do { } while (0)
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-#define flush_cache_vunmap(start, end)			do { } while (0)
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+#define flush_icache_user_page(vma, page, addr, len)	\
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+do {							\
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+	if (vma->vm_flags & VM_EXEC)			\
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+		sync_icache_dcache(page);		\
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+} while (0)
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-#define copy_to_user_page(vma, page, vaddr, dst, src, len)           \
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-	do {                                                         \
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-		memcpy(dst, src, len);                               \
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-		if (vma->vm_flags & VM_EXEC)                         \
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-			sync_icache_dcache(page);                    \
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-	} while (0)
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-
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-#define copy_from_user_page(vma, page, vaddr, dst, src, len)         \
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-	memcpy(dst, src, len)
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+#include <asm-generic/cacheflush.h>
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 #endif /* __ASM_CACHEFLUSH_H */