diff mbox series

[V2,2/5] mm: huge_memory: Convert remaining use of sprintf to sysfs_emit and neatening

Message ID 7df6be66bbd68e1a0bca9d35aca1341dbf94d2a7.1605376435.git.joe@perches.com (mailing list archive)
State New, archived
Headers show
Series mm: Convert sysfs sprintf family to sysfs_emit | expand

Commit Message

Joe Perches Nov. 14, 2020, 6:50 p.m. UTC 
Convert the only use of sprintf with struct kobject * that the cocci
script could not convert.

Miscellanea:

o Neaten the uses of a constant string with sysfs_emit to use a const
  char * to reduce overall object size

Signed-off-by: Joe Perches <joe@perches.com>
---
 mm/huge_memory.c | 52 +++++++++++++++++++++++++++++-------------------
 1 file changed, 31 insertions(+), 21 deletions(-)
diff mbox series

Patch

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 2d0540964d0e..5cac8c47f68c 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -163,12 +163,17 @@  static struct shrinker huge_zero_page_shrinker = {
 static ssize_t enabled_show(struct kobject *kobj,
 			    struct kobj_attribute *attr, char *buf)
 {
+	const char *output;
+
 	if (test_bit(TRANSPARENT_HUGEPAGE_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf, "[always] madvise never\n");
-	else if (test_bit(TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf, "always [madvise] never\n");
+		output = "[always] madvise never";
+	else if (test_bit(TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG,
+			  &transparent_hugepage_flags))
+		output = "always [madvise] never";
 	else
-		return sysfs_emit(buf, "always madvise [never]\n");
+		output = "always madvise [never]";
+
+	return sysfs_emit(buf, "%s\n", output);
 }
 
 static ssize_t enabled_store(struct kobject *kobj,
@@ -200,11 +205,11 @@  static struct kobj_attribute enabled_attr =
 	__ATTR(enabled, 0644, enabled_show, enabled_store);
 
 ssize_t single_hugepage_flag_show(struct kobject *kobj,
-				struct kobj_attribute *attr, char *buf,
-				enum transparent_hugepage_flag flag)
+				  struct kobj_attribute *attr, char *buf,
+				  enum transparent_hugepage_flag flag)
 {
-	return sprintf(buf, "%d\n",
-		       !!test_bit(flag, &transparent_hugepage_flags));
+	return sysfs_emit(buf, "%d\n",
+			  !!test_bit(flag, &transparent_hugepage_flags));
 }
 
 ssize_t single_hugepage_flag_store(struct kobject *kobj,
@@ -232,19 +237,24 @@  ssize_t single_hugepage_flag_store(struct kobject *kobj,
 static ssize_t defrag_show(struct kobject *kobj,
 			   struct kobj_attribute *attr, char *buf)
 {
-	if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf,
-				  "[always] defer defer+madvise madvise never\n");
-	if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf,
-				  "always [defer] defer+madvise madvise never\n");
-	if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf,
-				  "always defer [defer+madvise] madvise never\n");
-	if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, &transparent_hugepage_flags))
-		return sysfs_emit(buf,
-				  "always defer defer+madvise [madvise] never\n");
-	return sysfs_emit(buf, "always defer defer+madvise madvise [never]\n");
+	const char *output;
+
+	if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_DIRECT_FLAG,
+		     &transparent_hugepage_flags))
+		output = "[always] defer defer+madvise madvise never";
+	else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_FLAG,
+			  &transparent_hugepage_flags))
+		output = "always [defer] defer+madvise madvise never";
+	else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_KSWAPD_OR_MADV_FLAG,
+			  &transparent_hugepage_flags))
+		output = "always defer [defer+madvise] madvise never";
+	else if (test_bit(TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG,
+			  &transparent_hugepage_flags))
+		output = "always defer defer+madvise [madvise] never";
+	else
+		output = "always defer defer+madvise madvise [never]";
+
+	return sysfs_emit(buf, "%s\n", output);
 }
 
 static ssize_t defrag_store(struct kobject *kobj,