[U-Boot] [PATCH v2 6/8] kconfig: malloc: add option for skip memset at malloc init

[Przemyslaw Marczak]

Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
---
 Kconfig | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/Kconfig b/Kconfig
index 4157da3..e08e44a 100644
--- a/Kconfig
+++ b/Kconfig
@@ -57,13 +57,25 @@ config CC_OPTIMIZE_FOR_SIZE
 	  This option is enabled by default for U-Boot.
 
 menuconfig EXPERT
-        bool "Configure standard U-Boot features (expert users)"
-        help
-          This option allows certain base U-Boot options and settings
-          to be disabled or tweaked. This is for specialized
-          environments which can tolerate a "non-standard" U-Boot.
-          Only use this if you really know what you are doing.
-
+	bool "Configure standard U-Boot features (expert users)"
+	help
+	  This option allows certain base U-Boot options and settings
+	  to be disabled or tweaked. This is for specialized
+	  environments which can tolerate a "non-standard" U-Boot.
+	  Only use this if you really know what you are doing.
+
+if EXPERT
+	config SYS_MALLOC_INIT_SKIP_ZEROING
+	bool "Skip memset at malloc init (reduce boot time)"
+	help
+	 This avoids zeroing memory reserved for malloc at malloc init.
+	 Significant boot time reduction is visible for configs in which
+	 CONFIG_SYS_MALLOC_LEN value, has more than few MiB.
+	 Useful for bzip2, bmp logo.
+	 Warning:
+	 When enable, make sure that calloc() is used when zeroed
+	 memory is needed.
+endif
 endmenu		# General setup
 
 menu "Boot images"
-- 
1.9.1