tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: trace_marker trigger - test histogram with synthetic event
   4 # flags:
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 if [ ! -f set_event ]; then
  12     echo "event tracing is not supported"
  13     exit_unsupported
  14 fi
  15
  16 if [ ! -f synthetic_events ]; then
  17     echo "synthetic events not supported"
  18     exit_unsupported
  19 fi
  20
  21 if [ ! -d events/ftrace/print ]; then
  22     echo "event trace_marker is not supported"
  23     exit_unsupported
  24 fi
  25
  26 if [ ! -f events/ftrace/print/trigger ]; then
  27     echo "event trigger is not supported"
  28     exit_unsupported
  29 fi
  30
  31 if [ ! -f events/ftrace/print/hist ]; then
  32     echo "hist trigger is not supported"
  33     exit_unsupported
  34 fi
  35
  36 echo "Test histogram trace_marker to trace_marker latency histogram trigger"
  37
  38 echo 'latency u64 lat' > synthetic_events
  39 echo 'hist:keys=common_pid:ts0=common_timestamp.usecs if buf == "start"' > events/ftrace/print/trigger
  40 echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(ftrace.print).latency($lat) if buf == "end"' >> events/ftrace/print/trigger
  41 echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
  42 echo -n "start" > trace_marker
  43 echo -n "end" > trace_marker
  44
  45 cnt=`grep 'hitcount: *1$' events/ftrace/print/hist | wc -l`
  46
  47 if [ $cnt -ne 2 ]; then
  48     fail "hist trace_marker trigger did not trigger correctly"
  49 fi
  50
  51 grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
  52     fail "hist trigger did not trigger "
  53
  54 exit 0