From: Russell King Date: Thu, 1 Sep 2005 13:51:59 +0000 (+0100) Subject: [ARM] Simplify setup_mm_for_reboot() X-Git-Tag: v2.6.14-rc1~1016^2~1 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=103461a80c2f2dd95fe9a39a5decd984622c2a9e;p=linux-2.6-omap-h63xx.git [ARM] Simplify setup_mm_for_reboot() No point checking what CPU architecture level we have each time within the loop, so precompute the base PMD flags outside the loop. Signed-off-by: Russell King --- diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c index 8cb024aa88b..3a81944d74b 100644 --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c @@ -577,23 +577,23 @@ static void __init create_mapping(struct map_desc *md) */ void setup_mm_for_reboot(char mode) { - unsigned long pmdval; + unsigned long base_pmdval; pgd_t *pgd; - pmd_t *pmd; int i; - int cpu_arch = cpu_architecture(); if (current->mm && current->mm->pgd) pgd = current->mm->pgd; else pgd = init_mm.pgd; - for (i = 0; i < FIRST_USER_PGD_NR + USER_PTRS_PER_PGD; i++) { - pmdval = (i << PGDIR_SHIFT) | - PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | - PMD_TYPE_SECT; - if (cpu_arch <= CPU_ARCH_ARMv5TEJ) - pmdval |= PMD_BIT4; + base_pmdval = PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | PMD_TYPE_SECT; + if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ) + base_pmdval |= PMD_BIT4; + + for (i = 0; i < FIRST_USER_PGD_NR + USER_PTRS_PER_PGD; i++, pgd++) { + unsigned long pmdval = (i << PGDIR_SHIFT) | base_pmdval; + pmd_t *pmd; + pmd = pmd_off(pgd, i << PGDIR_SHIFT); pmd[0] = __pmd(pmdval); pmd[1] = __pmd(pmdval + (1 << (PGDIR_SHIFT - 1)));