Enabling ftrace for kernel debugging.

[kvmfornfv.git] / ci / envs / disable_trace.sh

diff --git a/ci/envs/disable_trace.sh b/ci/envs/disable_trace.sh
new file mode 100755 (executable)
index 0000000..1b04e62
--- /dev/null
+++ b/ci/envs/disable_trace.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -o xtrace
+curpwd=`pwd`
+TRACE_FILE=$1
+TRACEDIR=/sys/kernel/debug/tracing/
+
+sudo bash -c "echo 0 >$TRACEDIR/tracing_on"
+sleep 1
+sudo bash -c "cat $TRACEDIR/trace > $TRACE_FILE"
+sudo bash -c "echo > $TRACEDIR/set_event"
+sudo bash -c "echo > $TRACEDIR/trace"
+sudo sysctl kernel.ftrace_enabled=0
+sudo bash -c "echo nop > $TRACEDIR/current_tracer"
+
+set +o xtrace
+cd $curpwd