Commit 76929ab5 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Steven Rostedt
Browse files

kselftests/ftrace: Add hist trigger testcases 

Add the hist trigger testcases for ftracetest.
This checks the basic histogram trigger behaviors like as;
 - Histogram trigger itself
 - Histogram with string key
 - Histogram with compound keys
 - Histogram with sort key
 - Histogram trigger modifiers (execname, hex, syscall)
 - Multiple histograms on an event
 - Named histogram
 - Named histogram on multi events

Here is the test result.
  ----
  # ./ftracetest test.d/trigger/*hist*.tc
  === Ftrace unit tests ===
  [1] event trigger - test histogram modifiers    [PASS]
  [2] event trigger - test histogram trigger      [PASS]
  [3] event trigger - test multiple histogram triggers    [PASS]

  # of passed:  3
  # of failed:  0
  # of unresolved:  0
  # of untested:  0
  # of unsupported:  0
  # of xfailed:  0
  # of undefined(test bug):  0
  ----

Link: http://lkml.kernel.org/r/17cb3a3d9eeadc3282645147905455a298e7fbeb.1457029949.git.tom.zanussi@linux.intel.com



Signed-off-by: default avatarMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: default avatarTom Zanussi <tom.zanussi@linux.intel.com>
[Tom Zanussi: Change multihist test from truncate ('>') to append ('>>')]
Reviewed-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent cfa0963d

tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc

0 → 100644
+65 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test histogram modifiers



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit $FAIL

}



if [ ! -f set_event -o ! -d events/sched ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f events/sched/sched_process_fork/trigger ]; then

    echo "event trigger is not supported"

    exit_unsupported

fi



reset_tracer

do_reset



FEATURE=`grep hist events/sched/sched_process_fork/trigger`

if [ -z "$FEATURE" ]; then

    echo "hist trigger is not supported"

    exit_unsupported

fi



echo "Test histogram with execname modifier"



echo 'hist:keys=common_pid.execname' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

COMM=`cat /proc/$$/comm`

grep "common_pid: $COMM" events/sched/sched_process_fork/hist > /dev/null || \

    fail "execname modifier on sched_process_fork did not work"



reset_trigger



echo "Test histogram with hex modifier"



echo 'hist:keys=parent_pid.hex' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

# Note that $$ is the parent pid. $PID is current PID.

HEX=`printf %x $PID`

grep "parent_pid: $HEX" events/sched/sched_process_fork/hist > /dev/null || \

    fail "hex modifier on sched_process_fork did not work"



reset_trigger



echo "Test histogram with syscall modifier"



echo 'hist:keys=id.syscall' > events/raw_syscalls/sys_exit/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep "id: sys_" events/raw_syscalls/sys_exit/hist > /dev/null || \

    fail "syscall modifier on raw_syscalls/sys_exit did not work"



do_reset



exit 0

tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc

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+83 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test histogram trigger



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit $FAIL

}



if [ ! -f set_event -o ! -d events/sched ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f events/sched/sched_process_fork/trigger ]; then

    echo "event trigger is not supported"

    exit_unsupported

fi



reset_tracer

do_reset



FEATURE=`grep hist events/sched/sched_process_fork/trigger`

if [ -z "$FEATURE" ]; then

    echo "hist trigger is not supported"

    exit_unsupported

fi



echo "Test histogram basic tigger"



echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \

    fail "hist trigger on sched_process_fork did not work"

grep child events/sched/sched_process_fork/hist > /dev/null || \

    fail "hist trigger on sched_process_fork did not work"



reset_trigger



echo "Test histogram with compound keys"



echo 'hist:keys=parent_pid,child_pid' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep '^{ parent_pid:.*, child_pid:.*}' events/sched/sched_process_fork/hist > /dev/null || \

    fail "compound keys on sched_process_fork did not work"



reset_trigger



echo "Test histogram with string key"



echo 'hist:keys=parent_comm' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

COMM=`cat /proc/$$/comm`

grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \

    fail "string key on sched_process_fork did not work"



reset_trigger



echo "Test histogram with sort key"



echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done



check_inc() {

    while [ $# -gt 1 ]; do

        [ $1 -gt $2 ] && return 1

        shift 1

    done

    return 0

}

check_inc `grep -o "child_pid:[[:space:]]*[[:digit:]]*" \

    events/sched/sched_process_fork/hist | cut -d: -f2 ` ||

    fail "sort param on sched_process_fork did not work"



do_reset



exit 0

tools/testing/selftests/ftrace/test.d/trigger/trigger-multihist.tc

0 → 100644
+73 −0
Original line number Diff line number Diff line 
#!/bin/sh

# description: event trigger - test multiple histogram triggers



do_reset() {

    reset_trigger

    echo > set_event

    clear_trace

}



fail() { #msg

    do_reset

    echo $1

    exit $FAIL

}



if [ ! -f set_event -o ! -d events/sched ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi



if [ ! -f events/sched/sched_process_fork/trigger ]; then

    echo "event trigger is not supported"

    exit_unsupported

fi



reset_tracer

do_reset



FEATURE=`grep hist events/sched/sched_process_fork/trigger`

if [ -z "$FEATURE" ]; then

    echo "hist trigger is not supported"

    exit_unsupported

fi



reset_trigger



echo "Test histogram multiple tiggers"



echo 'hist:keys=parent_pid:vals=child_pid' > events/sched/sched_process_fork/trigger

echo 'hist:keys=parent_comm:vals=child_pid' >> events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep parent_pid events/sched/sched_process_fork/hist > /dev/null || \

    fail "hist trigger on sched_process_fork did not work"

grep child events/sched/sched_process_fork/hist > /dev/null || \

    fail "hist trigger on sched_process_fork did not work"

COMM=`cat /proc/$$/comm`

grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \

    fail "string key on sched_process_fork did not work"



reset_trigger



echo "Test histogram with its name"



echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_fork/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep test_hist events/sched/sched_process_fork/hist > /dev/null || \

    fail "named event on sched_process_fork did not work"



echo "Test same named histogram on different events"



echo 'hist:name=test_hist:keys=common_pid' > events/sched/sched_process_exit/trigger

for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done

grep test_hist events/sched/sched_process_exit/hist > /dev/null || \

    fail "named event on sched_process_fork did not work"



diffs=`diff events/sched/sched_process_exit/hist events/sched/sched_process_fork/hist | wc -l`

test $diffs -eq 0 || fail "Same name histograms are not same"



reset_trigger



do_reset



exit 0

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