From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-arch@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v5 31/38] mm: Rationalise flush_icache_pages() and flush_icache_page()
Date: Mon, 10 Jul 2023 21:43:32 +0100 [thread overview]
Message-ID: <20230710204339.3554919-32-willy@infradead.org> (raw)
In-Reply-To: <20230710204339.3554919-1-willy@infradead.org>
Move the default (no-op) implementation of flush_icache_pages()
to <linux/cacheflush.h> from <asm-generic/cacheflush.h>.
Remove the flush_icache_page() wrapper from each architecture
into <linux/cacheflush.h>.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
arch/alpha/include/asm/cacheflush.h | 5 +----
arch/arc/include/asm/cacheflush.h | 9 ---------
arch/arm/include/asm/cacheflush.h | 7 -------
arch/csky/abiv1/inc/abi/cacheflush.h | 1 -
arch/csky/abiv2/inc/abi/cacheflush.h | 1 -
arch/hexagon/include/asm/cacheflush.h | 2 +-
arch/loongarch/include/asm/cacheflush.h | 2 --
arch/m68k/include/asm/cacheflush_mm.h | 1 -
arch/mips/include/asm/cacheflush.h | 6 ------
arch/nios2/include/asm/cacheflush.h | 2 +-
arch/parisc/include/asm/cacheflush.h | 2 +-
arch/sh/include/asm/cacheflush.h | 2 +-
arch/sparc/include/asm/cacheflush_32.h | 2 --
arch/sparc/include/asm/cacheflush_64.h | 3 ---
arch/xtensa/include/asm/cacheflush.h | 4 ----
include/asm-generic/cacheflush.h | 12 ------------
include/linux/cacheflush.h | 9 +++++++++
17 files changed, 14 insertions(+), 56 deletions(-)
diff --git a/arch/alpha/include/asm/cacheflush.h b/arch/alpha/include/asm/cacheflush.h
index 3956460e69e2..36a7e924c3b9 100644
--- a/arch/alpha/include/asm/cacheflush.h
+++ b/arch/alpha/include/asm/cacheflush.h
@@ -53,10 +53,6 @@ extern void flush_icache_user_page(struct vm_area_struct *vma,
#define flush_icache_user_page flush_icache_user_page
#endif /* CONFIG_SMP */
-/* This is used only in __do_fault and do_swap_page. */
-#define flush_icache_page(vma, page) \
- flush_icache_user_page((vma), (page), 0, 0)
-
/*
* Both implementations of flush_icache_user_page flush the entire
* address space, so one call, no matter how many pages.
@@ -66,6 +62,7 @@ static inline void flush_icache_pages(struct vm_area_struct *vma,
{
flush_icache_user_page(vma, page, 0, 0);
}
+#define flush_icache_pages flush_icache_pages
#include <asm-generic/cacheflush.h>
diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h
index 04f65f588510..bd5b1a9a0544 100644
--- a/arch/arc/include/asm/cacheflush.h
+++ b/arch/arc/include/asm/cacheflush.h
@@ -18,15 +18,6 @@
#include <linux/mm.h>
#include <asm/shmparam.h>
-/*
- * Semantically we need this because icache doesn't snoop dcache/dma.
- * However ARC Cache flush requires paddr as well as vaddr, latter not available
- * in the flush_icache_page() API. So we no-op it but do the equivalent work
- * in update_mmu_cache()
- */
-#define flush_icache_page(vma, page)
-#define flush_icache_pages(vma, page, nr)
-
void flush_cache_all(void);
void flush_icache_range(unsigned long kstart, unsigned long kend);
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 841e268d2374..f6181f69577f 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -321,13 +321,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages)
#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages)
-/*
- * 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)
-#define flush_icache_pages(vma, page, nr) do { } while (0)
-
/*
* flush_cache_vmap() is used when creating mappings (eg, via vmap,
* vmalloc, ioremap etc) in kernel space for pages. On non-VIPT
diff --git a/arch/csky/abiv1/inc/abi/cacheflush.h b/arch/csky/abiv1/inc/abi/cacheflush.h
index 0d6cb65624c4..908d8b0bc4fd 100644
--- a/arch/csky/abiv1/inc/abi/cacheflush.h
+++ b/arch/csky/abiv1/inc/abi/cacheflush.h
@@ -45,7 +45,6 @@ extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, u
#define flush_cache_vmap(start, end) cache_wbinv_all()
#define flush_cache_vunmap(start, end) cache_wbinv_all()
-#define flush_icache_page(vma, page) do {} while (0);
#define flush_icache_range(start, end) cache_wbinv_range(start, end)
#define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end)
#define flush_icache_deferred(mm) do {} while (0);
diff --git a/arch/csky/abiv2/inc/abi/cacheflush.h b/arch/csky/abiv2/inc/abi/cacheflush.h
index 9c728933a776..40be16907267 100644
--- a/arch/csky/abiv2/inc/abi/cacheflush.h
+++ b/arch/csky/abiv2/inc/abi/cacheflush.h
@@ -33,7 +33,6 @@ static inline void flush_dcache_page(struct page *page)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-#define flush_icache_page(vma, page) do { } while (0)
#define flush_icache_range(start, end) cache_wbinv_range(start, end)
diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h
index dc3f500a5a01..bfff514a81c8 100644
--- a/arch/hexagon/include/asm/cacheflush.h
+++ b/arch/hexagon/include/asm/cacheflush.h
@@ -18,7 +18,7 @@
* - flush_cache_range(vma, start, end) flushes a range of pages
* - flush_icache_range(start, end) flush a range of instructions
* - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
- * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
+ * - flush_icache_pages(vma, pg, nr) flushes(invalidates) nr pages for icache
*
* Need to doublecheck which one is really needed for ptrace stuff to work.
*/
diff --git a/arch/loongarch/include/asm/cacheflush.h b/arch/loongarch/include/asm/cacheflush.h
index 88a44da50a3b..80bd74106985 100644
--- a/arch/loongarch/include/asm/cacheflush.h
+++ b/arch/loongarch/include/asm/cacheflush.h
@@ -46,8 +46,6 @@ void local_flush_icache_range(unsigned long start, unsigned long end);
#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
-#define flush_icache_page(vma, page) do { } while (0)
-#define flush_icache_pages(vma, page) do { } while (0)
#define flush_icache_user_page(vma, page, addr, len) do { } while (0)
#define flush_dcache_page(page) do { } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h
index 88eb85e81ef6..ed12358c4783 100644
--- a/arch/m68k/include/asm/cacheflush_mm.h
+++ b/arch/m68k/include/asm/cacheflush_mm.h
@@ -261,7 +261,6 @@ static inline void __flush_pages_to_ram(void *vaddr, unsigned int nr)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_icache_pages(vma, page, nr) \
__flush_pages_to_ram(page_address(page), nr)
-#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
extern void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long addr, int len);
diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h
index 0f389bc7cb90..f36c2519ed97 100644
--- a/arch/mips/include/asm/cacheflush.h
+++ b/arch/mips/include/asm/cacheflush.h
@@ -82,12 +82,6 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
__flush_anon_page(page, vmaddr);
}
-static inline void flush_icache_pages(struct vm_area_struct *vma,
- struct page *page, unsigned int nr)
-{
-}
-#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
-
extern void (*flush_icache_range)(unsigned long start, unsigned long end);
extern void (*local_flush_icache_range)(unsigned long start, unsigned long end);
extern void (*__flush_icache_user_range)(unsigned long start,
diff --git a/arch/nios2/include/asm/cacheflush.h b/arch/nios2/include/asm/cacheflush.h
index 8624ca83cffe..7c48c5213fb7 100644
--- a/arch/nios2/include/asm/cacheflush.h
+++ b/arch/nios2/include/asm/cacheflush.h
@@ -35,7 +35,7 @@ void flush_dcache_folio(struct folio *folio);
extern void flush_icache_range(unsigned long start, unsigned long end);
void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
unsigned int nr);
-#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1);
+#define flush_icache_pages flush_icache_pages
#define flush_cache_vmap(start, end) flush_dcache_range(start, end)
#define flush_cache_vunmap(start, end) flush_dcache_range(start, end)
diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index b77c3e0c37d3..b4006f2a9705 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -60,7 +60,7 @@ static inline void flush_dcache_page(struct page *page)
void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
unsigned int nr);
-#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
+#define flush_icache_pages flush_icache_pages
#define flush_icache_range(s,e) do { \
flush_kernel_dcache_range_asm(s,e); \
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index 9fceef6f3e00..878b6b551bd2 100644
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -53,7 +53,7 @@ extern void flush_icache_range(unsigned long start, unsigned long end);
#define flush_icache_user_range flush_icache_range
void flush_icache_pages(struct vm_area_struct *vma, struct page *page,
unsigned int nr);
-#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
+#define flush_icache_pages flush_icache_pages
extern void flush_cache_sigtramp(unsigned long address);
struct flusher_data {
diff --git a/arch/sparc/include/asm/cacheflush_32.h b/arch/sparc/include/asm/cacheflush_32.h
index 8dba35d63328..21f6c918238b 100644
--- a/arch/sparc/include/asm/cacheflush_32.h
+++ b/arch/sparc/include/asm/cacheflush_32.h
@@ -15,8 +15,6 @@
#define flush_cache_page(vma,addr,pfn) \
sparc32_cachetlb_ops->cache_page(vma, addr)
#define flush_icache_range(start, end) do { } while (0)
-#define flush_icache_page(vma, pg) do { } while (0)
-#define flush_icache_pages(vma, pg, nr) do { } while (0)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { \
diff --git a/arch/sparc/include/asm/cacheflush_64.h b/arch/sparc/include/asm/cacheflush_64.h
index a9a719f04d06..0e879004efff 100644
--- a/arch/sparc/include/asm/cacheflush_64.h
+++ b/arch/sparc/include/asm/cacheflush_64.h
@@ -53,9 +53,6 @@ static inline void flush_dcache_page(struct page *page)
flush_dcache_folio(page_folio(page));
}
-#define flush_icache_page(vma, pg) do { } while(0)
-#define flush_icache_pages(vma, pg, nr) do { } while(0)
-
void flush_ptrace_access(struct vm_area_struct *, struct page *,
unsigned long uaddr, void *kaddr,
unsigned long len, int write);
diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
index 35153f6725e4..785a00ce83c1 100644
--- a/arch/xtensa/include/asm/cacheflush.h
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -160,10 +160,6 @@ void local_flush_cache_page(struct vm_area_struct *vma,
__invalidate_icache_range(start,(end) - (start)); \
} while (0)
-/* This is not required, see Documentation/core-api/cachetlb.rst */
-#define flush_icache_page(vma,page) do { } while (0)
-#define flush_icache_pages(vma, page, nr) do { } while (0)
-
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h
index 09d51a680765..84ec53ccc450 100644
--- a/include/asm-generic/cacheflush.h
+++ b/include/asm-generic/cacheflush.h
@@ -77,18 +77,6 @@ static inline void flush_icache_range(unsigned long start, unsigned long end)
#define flush_icache_user_range flush_icache_range
#endif
-#ifndef flush_icache_page
-static inline void flush_icache_pages(struct vm_area_struct *vma,
- struct page *page, unsigned int nr)
-{
-}
-
-static inline void flush_icache_page(struct vm_area_struct *vma,
- struct page *page)
-{
-}
-#endif
-
#ifndef flush_icache_user_page
static inline void flush_icache_user_page(struct vm_area_struct *vma,
struct page *page,
diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h
index 82136f3fcf54..55f297b2c23f 100644
--- a/include/linux/cacheflush.h
+++ b/include/linux/cacheflush.h
@@ -17,4 +17,13 @@ static inline void flush_dcache_folio(struct folio *folio)
#define flush_dcache_folio flush_dcache_folio
#endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */
+#ifndef flush_icache_pages
+static inline void flush_icache_pages(struct vm_area_struct *vma,
+ struct page *page, unsigned int nr)
+{
+}
+#endif
+
+#define flush_icache_page(vma, page) flush_icache_pages(vma, page, 1)
+
#endif /* _LINUX_CACHEFLUSH_H */
--
2.39.2
next prev parent reply other threads:[~2023-07-10 20:44 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-10 20:43 [PATCH v5 00/38] New page table range API Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 01/38] minmax: Add in_range() macro Matthew Wilcox (Oracle)
2023-07-10 23:13 ` Andrew Morton
2023-07-11 2:14 ` Matthew Wilcox
2023-07-11 15:49 ` Andrew Morton
2023-07-24 15:21 ` David Laight
2023-07-11 5:28 ` Christoph Hellwig
2023-07-21 10:14 ` Ryan Roberts
2023-07-10 20:43 ` [PATCH v5 02/38] mm: Convert page_table_check_pte_set() to page_table_check_ptes_set() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 03/38] mm: Add generic flush_icache_pages() and documentation Matthew Wilcox (Oracle)
2023-07-10 22:23 ` Randy Dunlap
2023-07-10 20:43 ` [PATCH v5 04/38] mm: Add folio_flush_mapping() Matthew Wilcox (Oracle)
2023-07-10 23:17 ` Andrew Morton
2023-07-11 2:33 ` Matthew Wilcox
2023-07-11 16:01 ` Andrew Morton
2023-07-10 20:43 ` [PATCH v5 05/38] mm: Remove ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 06/38] mm: Add default definition of set_ptes() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 07/38] alpha: Implement the new page table range API Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 08/38] arc: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 09/38] arm: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 10/38] arm64: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 11/38] csky: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 12/38] hexagon: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 13/38] ia64: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 14/38] loongarch: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 15/38] m68k: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 16/38] microblaze: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 17/38] mips: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 18/38] nios2: " Matthew Wilcox (Oracle)
2023-07-10 23:08 ` Dinh Nguyen
2023-07-10 20:43 ` [PATCH v5 19/38] openrisc: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 20/38] parisc: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 21/38] powerpc: " Matthew Wilcox (Oracle)
2023-07-11 4:41 ` Christophe Leroy
2023-07-10 20:43 ` [PATCH v5 22/38] riscv: " Matthew Wilcox (Oracle)
2023-07-12 13:58 ` Palmer Dabbelt
2023-07-10 20:43 ` [PATCH v5 23/38] s390: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 24/38] sh: " Matthew Wilcox (Oracle)
2023-07-11 4:00 ` John Paul Adrian Glaubitz
2023-07-11 5:19 ` Yin, Fengwei
2023-07-10 20:43 ` [PATCH v5 25/38] sparc32: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 26/38] sparc64: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 27/38] um: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 28/38] x86: " Matthew Wilcox (Oracle)
2023-07-11 11:51 ` Peter Zijlstra
2023-07-10 20:43 ` [PATCH v5 29/38] xtensa: " Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 30/38] mm: Remove page_mapping_file() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` Matthew Wilcox (Oracle) [this message]
2023-07-10 20:43 ` [PATCH v5 32/38] mm: Tidy up set_ptes definition Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 33/38] mm: Use flush_icache_pages() in do_set_pmd() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 34/38] filemap: Add filemap_map_folio_range() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 35/38] rmap: add folio_add_file_rmap_range() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 36/38] mm: Convert do_set_pte() to set_pte_range() Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 37/38] filemap: Batch PTE mappings Matthew Wilcox (Oracle)
2023-07-10 20:43 ` [PATCH v5 38/38] mm: Call update_mmu_cache_range() in more page fault handling paths Matthew Wilcox (Oracle)
2023-07-11 9:07 ` [PATCH v5 00/38] New page table range API Christian Borntraeger
2023-07-11 12:36 ` Matthew Wilcox
2023-07-11 15:24 ` Claudio Imbrenda
2023-07-11 16:52 ` Andrew Morton
2023-07-11 22:03 ` Matthew Wilcox
2023-07-12 5:29 ` Matthew Wilcox
2023-07-12 8:35 ` Claudio Imbrenda
2023-07-13 10:42 ` Christian Borntraeger
2023-07-13 13:42 ` Matthew Wilcox
2023-07-13 20:27 ` Christian Borntraeger
2023-07-13 21:22 ` Matthew Wilcox
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