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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-09-01 14:51:59 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-09-01 14:51:59 +0100
commit103461a80c2f2dd95fe9a39a5decd984622c2a9e (patch)
tree01d0fa7bfa325cbbeec6ea484378355a18269444
parent08f4ffb3eb4ff23daf9c61bcd523940d43c2270c (diff)
[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 <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/mm/mm-armv.c18
1 files changed, 9 insertions, 9 deletions
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)));