From 7e30d7728affe283ad960d1e7f37515dc4c79dd3 Mon Sep 17 00:00:00 2001 From: Kieran Bingham Date: Thu, 1 Dec 2016 21:31:47 +0000 Subject: logger: Log to the FTrace buffer if tracing is enabled Extend the logger such that it will detect the tracing system, and also append print statement to this ring buffer. This provides the relevant logging output interspersed in the ftrace logs for an effective solution to identifying the actions that caused the traces to occur Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- scripts/logger.sh | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/scripts/logger.sh b/scripts/logger.sh index 8123f0c..8412b0b 100755 --- a/scripts/logger.sh +++ b/scripts/logger.sh @@ -6,6 +6,17 @@ now() { label=${1:+ [$1]} +TRACE_MARKER=/sys/kernel/debug/tracing/trace_marker +if [ -e $TRACE_MARKER ]; then + extra_log_files=$TRACE_MARKER +fi + while read line ; do - echo "$(now)$label $line" + newline="$(now)$label $line" + + echo "$newline" + + for f in $extra_log_files; do + echo "$newline" >> $f; + done; done -- cgit v1.2.3