2009-11-26 11:54:40

by Xiaotian Feng

Subject: [PATCH -tip] x86/pat: trivial: don't create debugfs for memtype if pat is disabled

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 <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: Venkatesh Pallipadi <[email protected]>
---
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

2009-11-26 17:28:08

by Xiaotian Feng

Subject: [tip:x86/mm] x86/pat: Trivial: don't create debugfs for memtype if pat is disabled

Commit-ID: dd4377b02d9f028006beed1b7b1695ee5d1498b6
Gitweb: http://git.kernel.org/tip/dd4377b02d9f028006beed1b7b1695ee5d1498b6
Author: Xiaotian Feng <[email protected]>
AuthorDate: Thu, 26 Nov 2009 19:53:48 +0800
Committer: Ingo Molnar <[email protected]>
CommitDate: Thu, 26 Nov 2009 15:05:03 +0100

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

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 <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: Venkatesh Pallipadi <[email protected]>
Cc: H. Peter Anvin <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
arch/x86/mm/pat.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index ef71251..a81b7e7 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -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;
}