[PATCH -next] MIPS: fix debugfs_simple_attr.cocci warnings

[YueHaibing <yuehaibing@xxxxxxxxxx>]

Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.

Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().

Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 arch/mips/kernel/spinlock_test.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/mips/kernel/spinlock_test.c b/arch/mips/kernel/spinlock_test.c
index ab4e3e1..509de1e 100644
--- a/arch/mips/kernel/spinlock_test.c
+++ b/arch/mips/kernel/spinlock_test.c
@@ -35,7 +35,7 @@ static int ss_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_ss, ss_get, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_ss, ss_get, NULL, "%llu\n");
 
 
 
@@ -114,14 +114,14 @@ static int multi_get(void *data, u64 *val)
 	return 0;
 }
 
-DEFINE_SIMPLE_ATTRIBUTE(fops_multi, multi_get, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_multi, multi_get, NULL, "%llu\n");
 
 static int __init spinlock_test(void)
 {
-	debugfs_create_file("spin_single", S_IRUGO, mips_debugfs_dir, NULL,
-			    &fops_ss);
-	debugfs_create_file("spin_multi", S_IRUGO, mips_debugfs_dir, NULL,
-			    &fops_multi);
+	debugfs_create_file_unsafe("spin_single", 0444, mips_debugfs_dir,
+				   NULL, &fops_ss);
+	debugfs_create_file_unsafe("spin_multi", 0444, mips_debugfs_dir,
+				   NULL, &fops_multi);
 	return 0;
 }
 device_initcall(spinlock_test);