dfeng at redhat
Nov 26, 2009, 3:53 AM
Post #1 of 1
(70 views)
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[PATCH -tip] 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 [at] redhat>
Cc: Thomas Gleixner <tglx [at] linutronix>
Cc: Ingo Molnar <mingo [at] redhat>
Cc: H. Peter Anvin <hpa [at] zytor>
Cc: Suresh Siddha <suresh.b.siddha [at] intel>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi [at] intel>
---
arch/x86/mm/pat.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 01fc043..c37fd51 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -1014,8 +1014,9 @@ 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;
}
--
1.6.5.2
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