| #!/bin/sh | |
| # SPDX-License-Identifier: GPL-2.0 | |
| # description: event tracing - enable/disable with subsystem level files | |
| # flags: instance | |
| do_reset() { | |
| echo > set_event | |
| clear_trace | |
| } | |
| fail() { #msg | |
| do_reset | |
| echo $1 | |
| exit $FAIL | |
| } | |
| yield() { | |
| ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1 | |
| } | |
| if [ ! -f set_event -o ! -d events/sched ]; then | |
| echo "event tracing is not supported" | |
| exit_unsupported | |
| fi | |
| reset_tracer | |
| do_reset | |
| echo 'sched:*' > set_event | |
| yield | |
| count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` | |
| if [ $count -lt 3 ]; then | |
| fail "at least fork, exec and exit events should be recorded" | |
| fi | |
| do_reset | |
| echo 1 > events/sched/enable | |
| yield | |
| count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` | |
| if [ $count -lt 3 ]; then | |
| fail "at least fork, exec and exit events should be recorded" | |
| fi | |
| do_reset | |
| echo 0 > events/sched/enable | |
| yield | |
| count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l` | |
| if [ $count -ne 0 ]; then | |
| fail "any of scheduler events should not be recorded" | |
| fi | |
| do_reset | |
| exit 0 |