From adf8a003e8414eb296b0e0b72d88ae3c6d34921c Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Mon, 17 Dec 2012 11:40:34 -0800 Subject: [PATCH] update_kernel: Save .5 seconds by avoiding tmp copy for kernel image There's no need to store to a temporary file when updating the kernel partition. Just stream straight to the right partition. This appears to save about .5 seconds. BUG=None TEST=Time update_kernel and see savings; verify that kernel still gets updated. Change-Id: I5afead3e70720ee6dc9e6a822ef1a98032d93b79 Reviewed-on: https://gerrit.chromium.org/gerrit/39783 Commit-Ready: Doug Anderson Reviewed-by: Doug Anderson Tested-by: Doug Anderson --- update_kernel.sh | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/update_kernel.sh b/update_kernel.sh index ebfcfbafef..395a2c2eb4 100755 --- a/update_kernel.sh +++ b/update_kernel.sh @@ -90,8 +90,7 @@ make_kernelimage() { } copy_kernelimage() { - remote_cp_to $TMP/new_kern.bin /tmp - remote_sh dd if=/tmp/new_kern.bin of="${FLAGS_partition}" + remote_sh dd of="${FLAGS_partition}" bs=4K < "${TMP}/new_kern.bin" } check_kernelbuildtime() {