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x86/pat: Trivial: don't create debugfs for memtype if pat is disabled

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If pat is disabled (boot with nopat), there's no need to create
debugfs for it, it's empty all the time.

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <1259236428-16329-1-git-send-email-dfeng@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Xiaotian Feng 2009-11-26 19:53:48 +08:00 committed by Ingo Molnar
parent 5bf65b9ba6
commit dd4377b02d
1 changed files with 4 additions and 2 deletions
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6
arch/x86/mm/pat.c
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@ -1019,8 +1019,10 @@ static const struct file_operations memtype_fops = {
static int __init pat_memtype_list_init(void)
{
debugfs_create_file("pat_memtype_list", S_IRUSR, arch_debugfs_dir,
NULL, &memtype_fops);
if (pat_enabled) {
debugfs_create_file("pat_memtype_list", S_IRUSR,
arch_debugfs_dir, NULL, &memtype_fops);
}
return 0;
}