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 do_reset() {
   7     reset_trigger
   8     echo > set_event
   9     echo > synthetic_events
  10     clear_trace
  11 }
  12
  13 fail() { #msg
  14     do_reset
  15     echo $1
  16     exit_fail
  17 }
  18
  19 if [ ! -f set_event ]; then
  20     echo "event tracing is not supported"
  21     exit_unsupported
  22 fi
  23
  24 if [ ! -f synthetic_events ]; then
  25     echo "synthetic events not supported"
  26     exit_unsupported
  27 fi
  28
  29 if [ ! -d events/ftrace/print ]; then
  30     echo "event trace_marker is not supported"
  31     exit_unsupported
  32 fi
  33
  34 if [ ! -f events/ftrace/print/trigger ]; then
  35     echo "event trigger is not supported"
  36     exit_unsupported
  37 fi
  38
  39 if [ ! -f events/ftrace/print/hist ]; then
  40     echo "hist trigger is not supported"
  41     exit_unsupported
  42 fi
  43
  44 do_reset
  45
  46 echo "Test histogram trace_marker to trace_marker latency histogram trigger"
  47
  48 echo 'latency u64 lat' > synthetic_events
  49 echo 'hist:keys=common_pid:ts0=common_timestamp.usecs if buf == "start"' > events/ftrace/print/trigger
  50 echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(ftrace.print).latency($lat) if buf == "end"' >> events/ftrace/print/trigger
  51 echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
  52 echo -n "start" > trace_marker
  53 echo -n "end" > trace_marker
  54
  55 cnt=`grep 'hitcount: *1$' events/ftrace/print/hist | wc -l`
  56
  57 if [ $cnt -ne 2 ]; then
  58     fail "hist trace_marker trigger did not trigger correctly"
  59 fi
  60
  61 grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
  62     fail "hist trigger did not trigger "
  63
  64 do_reset
  65
  66 exit 0