busybox: enable fractional sleep arguments

Fractional durations (e.g. 0.5s) for the sleep command are useful and
not terribly uncommon in practice, especially in scripts associated
with test cases (e.g. mdadm, lttng-tools).  Enable FEATURE_FLOAT_SLEEP
by default in order to avoid having to patch every instance of a
script using a fractional sleep.

The busybox binary gains a few hundred bytes in text (armv5e shown):

$ size -x busybox.nosuid.{before,after}
   text	   data	    bss	    dec	    hex	filename
0x89382	  0x71d	 0x2250	 572655	  8bcef	busybox.nosuid.before
0x8954e	  0x721	 0x2250	 573119	  8bebf	busybox.nosuid.after

Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

diff --git a/meta/recipes-core/busybox/busybox/defconfig b/meta/recipes-core/busybox/busybox/defconfig
index c0459d59612be1bcb60382a332c05b80b62fb82e..cbdb1391fd33db5311f592e52043516d0f161a0f 100644 (file)
--- a/meta/recipes-core/busybox/busybox/defconfig
+++ b/meta/recipes-core/busybox/busybox/defconfig
@@ -279,7 +279,7 @@ CONFIG_SEQ=y
 # CONFIG_SHA3SUM is not set
 CONFIG_SLEEP=y
 CONFIG_FEATURE_FANCY_SLEEP=y
-# CONFIG_FEATURE_FLOAT_SLEEP is not set
+CONFIG_FEATURE_FLOAT_SLEEP=y
 CONFIG_SORT=y
 CONFIG_FEATURE_SORT_BIG=y
 # CONFIG_SPLIT is not set