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| author |   Joshua Watt <JPEWhacker@gmail.com> | 2021-05-05 16:40:06 -0500 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-05-06 08:41:21 +0100 |
| commit | 15c65f90a3aa1e98c2beab2539403157df1fca08 (patch) | |
| tree | 3257dd434d61cb60da1ed46542019a405d96f5db | |
| parent | 0e9850486b74a3de934527ca1077df001d3a8d22 (diff) | |
| download | openembedded-core-15c65f90a3aa1e98c2beab2539403157df1fca08.tar.gz | |
classes/image: Use xargs to set file timestamps
Instead of having find directly invoke touch for each file in the root
file system, pass a list to xargs for batching. This significantly
reduces the number of times the touch program is invoked and speeds up
the do_image task time:
PKG TASK ABSDIFF RELDIFF CPUTIME1 -> CPUTIME2
my-image do_image -45.3s -94.2% 48.1s -> 2.8s
Cumulative cputime:
-44.3s -92.3% 00:48.1 (48.1s) -> 00:03.7 (3.7s)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/classes/image.bbclass | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass index 013455f492..353cc67175 100644 --- a/meta/classes/image.bbclass +++ b/meta/classes/image.bbclass @@ -657,7 +657,7 @@ reproducible_final_image_task () { fi # Set mtime of all files to a reproducible value bbnote "reproducible_final_image_task: mtime set to $REPRODUCIBLE_TIMESTAMP_ROOTFS" - find ${IMAGE_ROOTFS} -exec touch -h --date=@$REPRODUCIBLE_TIMESTAMP_ROOTFS {} \; + find ${IMAGE_ROOTFS} -print0 | xargs -0 touch -h --date=@$REPRODUCIBLE_TIMESTAMP_ROOTFS fi } |