[PATCH] slob: introduce mm/util.c for shared functions
Add mm/util.c for functions common between SLAB and SLOB.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/util.c b/mm/util.c
new file mode 100644
index 0000000..5f4bb59
--- /dev/null
+++ b/mm/util.c
@@ -0,0 +1,39 @@
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/module.h>
+
+/**
+ * kzalloc - allocate memory. The memory is set to zero.
+ * @size: how many bytes of memory are required.
+ * @flags: the type of memory to allocate.
+ */
+void *kzalloc(size_t size, gfp_t flags)
+{
+ void *ret = kmalloc(size, flags);
+ if (ret)
+ memset(ret, 0, size);
+ return ret;
+}
+EXPORT_SYMBOL(kzalloc);
+
+/*
+ * kstrdup - allocate space for and copy an existing string
+ *
+ * @s: the string to duplicate
+ * @gfp: the GFP mask used in the kmalloc() call when allocating memory
+ */
+char *kstrdup(const char *s, gfp_t gfp)
+{
+ size_t len;
+ char *buf;
+
+ if (!s)
+ return NULL;
+
+ len = strlen(s) + 1;
+ buf = kmalloc(len, gfp);
+ if (buf)
+ memcpy(buf, s, len);
+ return buf;
+}
+EXPORT_SYMBOL(kstrdup);