| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # description: Generic dynamic event - enable/disable tracepoint probe events |
| # requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README |
| |
| echo 0 > events/enable |
| echo > dynamic_events |
| |
| TRACEPOINT=sched_switch |
| ENABLEFILE=events/tracepoints/myprobe/enable |
| |
| :;: "Add tracepoint event on $TRACEPOINT" ;: |
| |
| echo "t:myprobe ${TRACEPOINT}" >> dynamic_events |
| |
| :;: "Check enable/disable to ensure it works" ;: |
| |
| echo 1 > $ENABLEFILE |
| |
| grep -q $TRACEPOINT trace |
| |
| echo 0 > $ENABLEFILE |
| |
| echo > trace |
| |
| ! grep -q $TRACEPOINT trace |
| |
| :;: "Repeat enable/disable to ensure it works" ;: |
| |
| echo 1 > $ENABLEFILE |
| |
| grep -q $TRACEPOINT trace |
| |
| echo 0 > $ENABLEFILE |
| |
| echo > trace |
| |
| ! grep -q $TRACEPOINT trace |
| |
| exit 0 |
