linux-kernel - flush_kernel_vmap_range() invalidate_kernel_vmap

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Date:	Fri, 25 Mar 2011 14:38:13 +0530
From:	naveen yadav <yad.naveen@...il.com>
To:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: flush_kernel_vmap_range() invalidate_kernel_vmap_range() API not
 exists for MIPS

Dear All,

We are working on 2.6.35.9 linux kernel on MIPS 34kce core and our
cache is VIVT having cache aliasing .
When I check the implementation on ARM I can check the implemenation
exists , but there is not similar implementation exists on MIPS.
These API's are used by XFS module:

static inline void flush_kernel_vmap_range(void *vaddr, int size)
static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
static inline void flush_kernel_dcache_page(struct page *page)


I can check implementation on ARM at
http://git.kernel.org/?p=linux/kernel/git/longterm/linux-2.6.34.y.git;a=commit;h=252a9afff76097667429b583e8b5b170b47665a4
 and
----------------------------------------------------------------------------------------------------------------------------
--- a/arch/arm/include/asm/cacheflush.h+++ b/arch/arm/include/asm/cacheflush.h
@@ -432,6 +432,16
 @@ static inline void __flush_icache_all(void)
  : "r" (0)); #endif }
+static inline void flush_kernel_vmap_range(void *addr, int size)
+{
+       if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+         __cpuc_flush_dcache_area(addr, (size_t)size);
+}
+static inline void invalidate_kernel_vmap_range(void *addr, int size)
+{
+       if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+         __cpuc_flush_dcache_area(addr, (size_t)size);
+}
-------------------------------------------------------------------------------------------------------------------------------------


http://git.kernel.org/?p=linux/kernel/git/longterm/linux-2.6.34.y.git;a=blobdiff;f=arch/arm/include/asm/cacheflush.h;h=1a711ea8418b6045c581a576caa3f85496ee2673;hp=bb7d695f3900f70d635a3597cd19d7cb68c0d732;hb=73be1591579084a8103a7005dd3172f3e9dd7362;hpb=44b7532b8b464f606053562400719c9c21276037

======================================================
+#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
+static inline void flush_kernel_dcache_page(struct page *page)
+{
+       /* highmem pages are always flushed upon kunmap already */
+       if ((cache_is_vivt() || cache_is_vipt_aliasing()) && !PageHighMem(page))
+               __cpuc_flush_dcache_page(page_address(page));
+}
+
==========================================================


Is there any similar API exists for MIPS.  I want to use for XFS these API's

thanks
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