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Message-ID: <201308092100.r79L02nI011266@lab-41.internal.tilera.com>
Date: Fri, 9 Aug 2013 16:17:03 -0400
From: Chris Metcalf <cmetcalf@...era.com>
To: <linux-kernel@...r.kernel.org>
Subject: [PATCH] tile: remove set/clear_fixmap APIs
Nothing in the codebase was using them, and as written they took
"unsigned long" as the physical address rather than "phys_addr_t",
which is wrong on tilepro anyway. Rather than fixing stale APIs,
just remove them; if there's ever demand for them on this platform,
we can put them back.
Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
---
arch/tile/include/asm/fixmap.h | 8 -------
arch/tile/mm/init.c | 5 +----
arch/tile/mm/pgtable.c | 49 ------------------------------------------
3 files changed, 1 insertion(+), 61 deletions(-)
diff --git a/arch/tile/include/asm/fixmap.h b/arch/tile/include/asm/fixmap.h
index e16dbf9..c6b9c1b 100644
--- a/arch/tile/include/asm/fixmap.h
+++ b/arch/tile/include/asm/fixmap.h
@@ -78,14 +78,6 @@ enum fixed_addresses {
#endif
};
-extern void __set_fixmap(enum fixed_addresses idx,
- unsigned long phys, pgprot_t flags);
-
-#define set_fixmap(idx, phys) \
- __set_fixmap(idx, phys, PAGE_KERNEL)
-#define clear_fixmap(idx) \
- __set_fixmap(idx, 0, __pgprot(0))
-
#define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
#define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP + PAGE_SIZE - __FIXADDR_SIZE)
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index e182958..3bfa127 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -777,10 +777,7 @@ void __init paging_init(void)
kernel_physical_mapping_init(pgd_base);
- /*
- * Fixed mappings, only the page table structure has to be
- * created - mappings will be set by set_fixmap():
- */
+ /* Fixed mappings, only the page table structure has to be created. */
page_table_range_init(fix_to_virt(__end_of_fixed_addresses - 1),
FIXADDR_TOP, pgd_base);
diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 2bd572b..e41487e 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -83,55 +83,6 @@ void show_mem(unsigned int filter)
}
}
-/*
- * Associate a virtual page frame with a given physical page frame
- * and protection flags for that frame.
- */
-static void set_pte_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = swapper_pg_dir + pgd_index(vaddr);
- if (pgd_none(*pgd)) {
- BUG();
- return;
- }
- pud = pud_offset(pgd, vaddr);
- if (pud_none(*pud)) {
- BUG();
- return;
- }
- pmd = pmd_offset(pud, vaddr);
- if (pmd_none(*pmd)) {
- BUG();
- return;
- }
- pte = pte_offset_kernel(pmd, vaddr);
- /* <pfn,flags> stored as-is, to permit clearing entries */
- set_pte(pte, pfn_pte(pfn, flags));
-
- /*
- * It's enough to flush this one mapping.
- * This appears conservative since it is only called
- * from __set_fixmap.
- */
- local_flush_tlb_page(NULL, vaddr, PAGE_SIZE);
-}
-
-void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- BUG();
- return;
- }
- set_pte_pfn(address, phys >> PAGE_SHIFT, flags);
-}
-
/**
* shatter_huge_page() - ensure a given address is mapped by a small page.
*
--
1.8.3.1
--
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