From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Kieran Bingham To: Laurent Pinchart , Kieran Bingham Cc: linux-renesas-soc@vger.kernel.org Subject: [PATCHv2 3/5] logger: Log to the FTrace buffer if tracing is enabled Date: Thu, 1 Dec 2016 21:31:47 +0000 Message-Id: <1480627909-19207-4-git-send-email-kieran.bingham+renesas@ideasonboard.com> In-Reply-To: <1480627909-19207-1-git-send-email-kieran.bingham+renesas@ideasonboard.com> References: <1480627909-19207-1-git-send-email-kieran.bingham+renesas@ideasonboard.com> List-ID: From: Kieran Bingham 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 --- scripts/logger.sh | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/scripts/logger.sh b/scripts/logger.sh index 8123f0c9f6e3..8412b0ba9a08 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 -- 2.7.4