Add a test to test the event filter logic. It currently tests the following filters against sched:sched_switch event.
( prev_pid != 0 ) ( prev_pid == 0 ) ( prev_pid < 100 ) ( prev_pid <= $$ ) ( prev_pid > 100 ) ( prev_pid >= $$ ) ! ( prev_pid != 0 ) ! ( prev_pid == 0 ) ! ( prev_pid < 100 ) ! ( prev_pid <= $$ ) ! ( prev_pid > 100 ) ! ( prev_pid >= $$ ) ( prev_pid != 0 && next_pid > 10 ) ( prev_pid != 0 || next_pid > 10 ) ! ( prev_pid != 0 && next_pid > 10 ) ! ( prev_pid != 0 || next_pid > 10 ) ( prev_pid & 1 ) ( prev_pid & 2 ) ( prev_pid & 4 ) ( prev_pid & 8 ) ( prev_pid & 16 ) ! ( prev_pid & 1 ) ! ( prev_pid & 2 ) ! ( prev_pid & 4 ) ! ( prev_pid & 8 ) ! ( prev_pid & 16 ) ( next_comm ~ "ftrace-test-fil" ) ( next_comm != "ftrace-test-fil" ) ! ( next_comm ~ "ftrace-test-fil" ) ! ( next_comm != "ftrace-test-fil" ) Signed-off-by: Steven Rostedt <[email protected]> --- .../selftests/ftrace/test.d/ftrace/filter.tc | 197 +++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/filter.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/filter.tc b/tools/testing/selftests/ftrace/test.d/ftrace/filter.tc new file mode 100644 index 000000000000..eef7cc6320f2 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/filter.tc @@ -0,0 +1,197 @@ +#!/bin/sh +# description: ftrace - test filter logic + +EVENT=events/sched/sched_switch +FILTER=$EVENT/filter +ENABLE=$EVENT/enable + +FIELD1=prev_pid +FIELD2=next_pid +FIELD3=next_comm + +ITER=100 + +enable_event() { + echo 1 > $ENABLE +} + +disable_event() { + echo 0 > $ENABLE +} + +clear_filter() { + echo 0 > $FILTER +} + +do_reset() { + enable_tracing + disable_event + clear_filter + clear_trace +} + +fail() { # msg + do_reset + echo $1 + exit -1 +} + +run_code() { + # make lots of pids to filter on + for i in `seq $ITER`; do + ls /usr > /dev/null + done +} + +run_event() { + enable_event + run_code + disable_event +} + +disable_tracing +clear_trace +enable_tracing + +test_cmp() { + cmp=$1 + rval=$2 + filter=$3 + not=$4 + + echo "$not ( $FIELD1 $filter )" + echo "$not ( $FIELD1 $filter )" > $FILTER + + run_event + + cat trace | sed -ne "s/.*$FIELD1=\([^ ]*\).*/\1/p" | + while read pid; do + if [ "$pid" $cmp $rval ]; then + if [ "$not" = '!' ]; then + fail "$pid matched filter: $filter; but should not not have for $not" + fi + elif [ "$not" != '!' ]; then + fail "$pid does not match filter: $filter" + fi + done + clear_trace +} + +test_cmp2() { + cmp1=$1 + rval1=$2 + conj=$3 + cmp2=$4 + rval2=$5 + filter1=$6 + filter2=$7 + fconj=$8 + not=$9 + + echo "$not ( $FIELD1 $filter1 $fconj $FIELD2 $filter2 )" + echo "$not ( $FIELD1 $filter1 $fconj $FIELD2 $filter2 )" > $FILTER + + run_event + + cat trace | sed -ne "s/.*$FIELD1=\([^ ]*\).*$FIELD2=\([^ ]*\).*/\1 \2/p" | + while read pid1 pid2; do + if [ "$pid1" $cmp1 $rval1 $conj "$pid2" $cmp2 $rval2 ]; then + if [ "$not" = '!' ]; then + fail "$pid1 and $pid2 match not filter: $filter1 $fconj $filter2" + fi + elif [ "$not" != '!' ]; then + fail "$pid1 and $pid2 does not match filter: $filter1 $fconj $filter2" + fi + done + clear_trace +} + +# first simple compares +test_cmp -ne 0 "!= 0" "" +test_cmp -eq 0 "== 0" "" +test_cmp -lt 100 "< 100" "" +test_cmp -le $$ "<= $$" "" +test_cmp -gt 100 "> 100" "" +test_cmp -ge $$ ">= $$" "" + +# Now test the not case +test_cmp -ne 0 "!= 0" '!' +test_cmp -eq 0 "== 0" '!' +test_cmp -lt 100 "< 100" '!' +test_cmp -le $$ "<= $$" '!' +test_cmp -gt 100 "> 100" '!' +test_cmp -ge $$ ">= $$" '!' + +# Test more complex compares (&& and !!) +test_cmp2 -ne 0 -a -gt 10 "!= 0" "> 10" "&&" '' +test_cmp2 -ne 0 -o -gt 10 "!= 0" "> 10" "||" '' + +test_cmp2 -ne 0 -a -gt 10 "!= 0" "> 10" "&&" '!' +test_cmp2 -ne 0 -o -gt 10 "!= 0" "> 10" "||" '!' + +# test bitmask + +bit_test() { + not=$1 + + x=1 + for i in `seq 5`; do + echo "$not ( $FIELD1 & $x )" + echo "$not ( $FIELD1 & $x )" > $FILTER + run_event + + cat trace | sed -ne "s/.*$FIELD1=\([^ ]*\).*/\1/p" | + while read pid; do + + val=$(($pid & $x)) + + if [ $val -eq 0 ]; then + if [ "$not" != '!' ]; then + fail "$pid did not match bitmask $x" + fi + elif [ "$not" = '!' ]; then + fail "$pid did not match not bitmask $x" + fi + done + clear_trace + x=$(($x << 1)) + done +} + +bit_test '' +bit_test '!' + +test_string() { + cmp=$1 + filter=$2 + not=$3 + + comm=`cat /proc/$$/comm` + + echo "$not ( $FIELD3 $filter \"$comm\" )" + echo "$not ( $FIELD3 $filter \"$comm\" )" > $FILTER + + run_event + + cat trace | sed -ne "s/.*$FIELD3=\([^ ]*\).*/\1/p" | + while read com; do + if [ "$com" $cmp "$comm" ]; then + if [ "$not" = '!' ]; then + fail "$com matched filter: $filter; but should not not have for $not" + fi + elif [ "$not" != '!' ]; then + fail "$com does not match filter: $filter" + fi + done + clear_trace +} + +test_string "=" "~" '' +test_string "!=" "!=" '' + +test_string "=" "~" '!' +test_string "!=" "!=" '!' + +do_reset + +exit 0 -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
