From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/arm64/include/asm/cacheflush.h | 79 +++++----------------------------------
1 files changed, 10 insertions(+), 69 deletions(-)
diff --git a/kernel/arch/arm64/include/asm/cacheflush.h b/kernel/arch/arm64/include/asm/cacheflush.h
index a4fa4b5..9384fd8 100644
--- a/kernel/arch/arm64/include/asm/cacheflush.h
+++ b/kernel/arch/arm64/include/asm/cacheflush.h
@@ -1,20 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Based on arch/arm/include/asm/cacheflush.h
*
* Copyright (C) 1999-2002 Russell King.
* Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_CACHEFLUSH_H
#define __ASM_CACHEFLUSH_H
@@ -40,10 +29,6 @@
* See Documentation/core-api/cachetlb.rst for more information. Please note that
* the implementation assumes non-aliasing VIPT D-cache and (aliasing)
* VIPT I-cache.
- *
- * flush_cache_all()
- *
- * Unconditionally clean and invalidate the entire cache.
*
* flush_cache_mm(mm)
*
@@ -76,10 +61,8 @@
* - kaddr - page address
* - size - region size
*/
-extern void flush_cache_all(void);
extern void __flush_icache_range(unsigned long start, unsigned long end);
extern int invalidate_icache_range(unsigned long start, unsigned long end);
-extern void __flush_dcache_all(void);
extern void __flush_dcache_area(void *addr, size_t len);
extern void __inval_dcache_area(void *addr, size_t len);
extern void __clean_dcache_area_poc(void *addr, size_t len);
@@ -111,20 +94,7 @@
kick_all_cpus_sync();
}
-
-static inline void flush_cache_mm(struct mm_struct *mm)
-{
-}
-
-static inline void flush_cache_page(struct vm_area_struct *vma,
- unsigned long user_addr, unsigned long pfn)
-{
-}
-
-static inline void flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
-}
+#define flush_icache_range flush_icache_range
/*
* Cache maintenance functions used by the DMA API. No to be used directly.
@@ -132,15 +102,6 @@
extern void __dma_map_area(const void *, size_t, int);
extern void __dma_unmap_area(const void *, size_t, int);
extern void __dma_flush_area(const void *, size_t);
-extern void __dma_inv_area(const void *start, size_t size);
-extern void __dma_clean_area(const void *start, size_t size);
-
-#define dmac_flush_range(start, end) \
- __dma_flush_area(start, (void *)(end) - (void *)(start))
-#define dmac_inv_range(start, end) \
- __dma_inv_area(start, (void *)(end) - (void *)(start))
-#define dmac_clean_range(start, end) \
- __dma_clean_area(start, (void *)(end) - (void *)(start))
/*
* Copy user data from/to a page which is mapped into a different
@@ -149,12 +110,7 @@
*/
extern void copy_to_user_page(struct vm_area_struct *, struct page *,
unsigned long, void *, const void *, unsigned long);
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- do { \
- memcpy(dst, src, len); \
- } while (0)
-
-#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+#define copy_to_user_page copy_to_user_page
/*
* flush_dcache_page is used when the kernel has written to the page
@@ -171,7 +127,7 @@
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
extern void flush_dcache_page(struct page *);
-static inline void __flush_icache_all(void)
+static __always_inline void __flush_icache_all(void)
{
if (cpus_have_const_cap(ARM64_HAS_CACHE_DIC))
return;
@@ -180,26 +136,11 @@
dsb(ish);
}
-#define flush_dcache_mmap_lock(mapping) do { } while (0)
-#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-
-/*
- * We don't appear to need to do anything here. In fact, if we did, we'd
- * duplicate cache flushing elsewhere performed by flush_dcache_page().
- */
-#define flush_icache_page(vma,page) do { } while (0)
-
-/*
- * Not required on AArch64 (PIPT or VIPT non-aliasing D-cache).
- */
-static inline void flush_cache_vmap(unsigned long start, unsigned long end)
-{
-}
-
-static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
-{
-}
-
int set_memory_valid(unsigned long addr, int numpages, int enable);
-#endif
+int set_direct_map_invalid_noflush(struct page *page);
+int set_direct_map_default_noflush(struct page *page);
+
+#include <asm-generic/cacheflush.h>
+
+#endif /* __ASM_CACHEFLUSH_H */
--
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