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authorDavid Gibson <david@gibson.dropbear.id.au>2007-04-24 07:09:12 +0400
committerPaul Mackerras <paulus@samba.org>2007-04-24 16:08:56 +0400
commit621023072524fc0155ed16490255e1ea3aa11585 (patch)
tree77fec16321fe72ef75532c4f07ffee004b57bbfe /include/asm-powerpc/pgtable.h
parent687304014f7ca8e2fbb3feaefef356b4a0da65ad (diff)
downloadlinux-621023072524fc0155ed16490255e1ea3aa11585.tar.xz
[POWERPC] Cleanup and fix breakage in tlbflush.h
BenH's commit a741e67969577163a4cfc78d7fd2753219087ef1 in powerpc.git, although (AFAICT) only intended to affect ppc64, also has side-effects which break 44x. I think 40x, 8xx and Freescale Book E are also affected, though I haven't tested them. The problem lies in unconditionally removing flush_tlb_pending() from the versions of flush_tlb_mm(), flush_tlb_range() and flush_tlb_kernel_range() used on ppc64 - which are also used the embedded platforms mentioned above. The patch below cleans up the convoluted #ifdef logic in tlbflush.h, in the process restoring the necessary flushes for the software TLB platforms. There are three sets of definitions for the flushing hooks: the software TLB versions (revised to avoid using names which appear to related to TLB batching), the 32-bit hash based versions (external functions) amd the 64-bit hash based versions (which implement batching). It also moves the declaration of update_mmu_cache() to always be in tlbflush.h (previously it was in tlbflush.h except for PPC64, where it was in pgtable.h). Booted on Ebony (440GP) and compiled for 64-bit and 32-bit multiplatform. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/pgtable.h')
-rw-r--r--include/asm-powerpc/pgtable.h10
1 files changed, 0 insertions, 10 deletions
diff --git a/include/asm-powerpc/pgtable.h b/include/asm-powerpc/pgtable.h
index c7142c7e0e05..19edb6982b81 100644
--- a/include/asm-powerpc/pgtable.h
+++ b/include/asm-powerpc/pgtable.h
@@ -448,16 +448,6 @@ extern pgd_t swapper_pg_dir[];
extern void paging_init(void);
-/*
- * This gets called at the end of handling a page fault, when
- * the kernel has put a new PTE into the page table for the process.
- * We use it to put a corresponding HPTE into the hash table
- * ahead of time, instead of waiting for the inevitable extra
- * hash-table miss exception.
- */
-struct vm_area_struct;
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
-
/* Encode and de-code a swap entry */
#define __swp_type(entry) (((entry).val >> 1) & 0x3f)
#define __swp_offset(entry) ((entry).val >> 8)