From: Kieran Bingham <[email protected]> Rather that using shell parsing of each file when looking for a device node, use a combination of grep and sed to identify the device.
This is a remarkable speed optimisation for this code segment. Signed-off-by: Kieran Bingham <[email protected]> --- scripts/vin-tests.sh | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/scripts/vin-tests.sh b/scripts/vin-tests.sh index 7c81aa51c1c5..2e6214bc95e6 100644 --- a/scripts/vin-tests.sh +++ b/scripts/vin-tests.sh @@ -99,17 +99,9 @@ mc_get_mdev() { } mc_get_dev() { - name=$1 - mdev=$(mc_get_mdev) - - for dev in /sys/class/video4linux/*; do - if [[ "$(cat $dev/name)" == "$name" ]]; then - basename $dev - return 0 - fi - done - - error "Can't find device" + name="$1" + grep -l "$name" /sys/class/video4linux/video*/name | \ + sed 's#.*video4linux\(.*\)/name#/dev\1#g' } mc_log() { -- 2.7.4
