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: remove pgd_base

PATCH New Juan Quintela 1 participant 1 message Mar 27, 2003 MIPS

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Juan Quintela

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PATCH 1/1 : remove pgd_base

Hi

pgd_base was only used in the CONFIG_HIGHMEM. Used constant propagation and we are done.

Later, Juan.

 build/arch/mips/mm/init.c |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)
build/arch/mips/mm/init.c renamed from build/arch/mips/mm/init.c~remove_unused_var_init.c +3 -5
diff -puN build/arch/mips/mm/init.c~remove_unused_var_init.c build/arch/mips/mm/init.c
@@ -193,7 +193,7 @@ static void __init fixrange_init (unsign
 void __init pagetable_init(void)
 {
 	unsigned long vaddr;
-	pgd_t *pgd, *pgd_base;
+	pgd_t *pgd;
 	pmd_t *pmd;
 	pte_t *pte;
 

@@ -202,20 +202,18 @@ void __init pagetable_init(void)
 	pgd_init((unsigned long)swapper_pg_dir +
 	         sizeof(pgd_t ) * USER_PTRS_PER_PGD);
 
-	pgd_base = swapper_pg_dir;
-
 #ifdef CONFIG_HIGHMEM
 	/*
 	 * Fixed mappings:
 	 */
 	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
-	fixrange_init(vaddr, 0, pgd_base);
+	fixrange_init(vaddr, 0, swapper_pg_dir);
 
 	/*
 	 * Permanent kmaps:
 	 */
 	vaddr = PKMAP_BASE;
-	fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);
+	fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir);
 
 	pgd = swapper_pg_dir + __pgd_offset(vaddr);
 	pmd = pmd_offset(pgd, vaddr);

_

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In theory, practice and theory are the same, but in practice they 
are different -- Larry McVoy