diff options
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/trigger')
17 files changed, 273 insertions, 13 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc index 41119e0440e9..04c5dd7d0acc 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test field variable support -# requires: set_event synthetic_events events/sched/sched_process_fork/hist +# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc index 7449a4b8f1f9..f7447d800899 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event combined histogram trigger -# requires: set_event synthetic_events events/sched/sched_process_fork/hist +# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program fail() { #msg echo $1 @@ -25,12 +25,12 @@ echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger -echo 'waking+wakeup_latency u64 lat; pid_t pid' >> synthetic_events -echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking+wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger -echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking+wakeup_latency/trigger +echo 'waking_plus_wakeup_latency u64 lat; pid_t pid' >> synthetic_events +echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking_plus_wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger +echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking_plus_wakeup_latency/trigger ping $LOCALHOST -c 3 -if ! grep -q "pid:" events/synthetic/waking+wakeup_latency/hist; then +if ! grep -q "pid:" events/synthetic/waking_plus_wakeup_latency/hist; then fail "Failed to create combined histogram" fi diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc index adaabb873ed4..91339c130832 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger onchange action -# requires: set_event "onchange(var)":README +# requires: set_event "onchange(var)":README ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc index 20e39471052e..d645abcf11c4 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger onmatch action -# requires: set_event synthetic_events events/sched/sched_process_fork/hist +# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc index f4b03ab7c287..c369247efb35 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger onmatch-onmax action -# requires: set_event synthetic_events events/sched/sched_process_fork/hist +# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc index 71c9b5911c70..e28dc5f11b2b 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger onmax action -# requires: set_event synthetic_events events/sched/sched_process_fork/hist +# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc index 67fa328b830f..147967e86584 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger snapshot action -# requires: set_event snapshot events/sched/sched_process_fork/hist "onchange(var)":README "snapshot()":README +# requires: set_event snapshot events/sched/sched_process_fork/hist "onchange(var)":README "snapshot()":README ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-eprobe.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-eprobe.tc new file mode 100644 index 000000000000..c2a8ab01e13b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-eprobe.tc @@ -0,0 +1,53 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test inter-event histogram trigger eprobe on synthetic event +# requires: dynamic_events synthetic_events events/syscalls/sys_enter_openat/hist "e[:[<group>/][<event>]] <attached-group>.<attached-event> [<args>]":README + +echo 0 > events/enable + +clear_dynamic_events + +SYSTEM="syscalls" +START="sys_enter_openat" +END="sys_exit_openat" +FIELD="filename" +SYNTH="synth_open" +EPROBE="eprobe_open" + +echo "$SYNTH unsigned long filename; long ret;" > synthetic_events +echo "hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger +echo "hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger + +echo "e:$EPROBE synthetic/$SYNTH file=+0(\$filename):ustring ret=\$ret:s64" >> dynamic_events + +grep -q "$SYNTH" dynamic_events +grep -q "$EPROBE" dynamic_events +test -d events/synthetic/$SYNTH +test -d events/eprobes/$EPROBE + +echo 1 > events/eprobes/$EPROBE/enable +ls +echo 0 > events/eprobes/$EPROBE/enable + +content=`grep '^ *ls-' trace | grep 'file='` +nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."'` || true + +if [ -z "$content" ]; then + exit_fail +fi + +if [ ! -z "$nocontent" ]; then + exit_fail +fi + +echo "-:$EPROBE" >> dynamic_events +echo '!'"hist:keys=common_pid:filename=\$__arg__1,ret=ret:onmatch($SYSTEM.$START).trace($SYNTH,\$filename,\$ret)" > events/$SYSTEM/$END/trigger +echo '!'"hist:keys=common_pid:__arg__1=$FIELD" > events/$SYSTEM/$START/trigger +echo '!'"$SYNTH u64 filename; s64 ret;" >> synthetic_events + +! grep -q "$SYNTH" dynamic_events +! grep -q "$EPROBE" dynamic_events +! test -d events/synthetic/$SYNTH +! test -d events/eprobes/$EPROBE + +clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc new file mode 100644 index 000000000000..174376ddbc6c --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc @@ -0,0 +1,31 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test inter-event histogram trigger trace action with dynamic string param +# requires: set_event synthetic_events events/sched/sched_process_exec/hist "' >> synthetic_events":README ping:program + +fail() { #msg + echo $1 + exit_fail +} + +echo "Test create synthetic event" + +echo 'ping_test_latency u64 lat; char filename[]' > synthetic_events +if [ ! -d events/synthetic/ping_test_latency ]; then + fail "Failed to create ping_test_latency synthetic event" +fi + +echo "Test create histogram for synthetic event using trace action and dynamic strings" +echo "Test histogram dynamic string variables,simple expression support and trace action" + +echo 'hist:key=pid:filenamevar=filename:ts0=common_timestamp.usecs' > events/sched/sched_process_exec/trigger +echo 'hist:key=pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_process_exec).ping_test_latency($lat,$filenamevar) if comm == "ping"' > events/sched/sched_process_exit/trigger +echo 'hist:keys=filename,lat:sort=filename,lat' > events/synthetic/ping_test_latency/trigger + +ping $LOCALHOST -c 5 + +if ! grep -q "ping" events/synthetic/ping_test_latency/hist; then + fail "Failed to create dynamic string trace action inter-event histogram" +fi + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack-legacy.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack-legacy.tc new file mode 100644 index 000000000000..d0cd91a93069 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack-legacy.tc @@ -0,0 +1,24 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test inter-event histogram trigger trace action with dynamic string param (legacy stack) +# requires: set_event synthetic_events events/sched/sched_process_exec/hist "long[] stack' >> synthetic_events":README + +fail() { #msg + echo $1 + exit_fail +} + +echo "Test create synthetic event with stack" + +# Test the old stacktrace keyword (for backward compatibility) +echo 's:wake_lat pid_t pid; u64 delta; unsigned long[] stack;' > dynamic_events +echo 'hist:keys=next_pid:ts=common_timestamp.usecs,st=stacktrace if prev_state == 1||prev_state == 2' >> events/sched/sched_switch/trigger +echo 'hist:keys=prev_pid:delta=common_timestamp.usecs-$ts,s=$st:onmax($delta).trace(wake_lat,prev_pid,$delta,$s)' >> events/sched/sched_switch/trigger +echo 1 > events/synthetic/wake_lat/enable +sleep 1 + +if ! grep -q "=>.*sched" trace; then + fail "Failed to create synthetic event with stack" +fi + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc new file mode 100644 index 000000000000..8f1cc9a86a06 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.tc @@ -0,0 +1,23 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test inter-event histogram trigger trace action with dynamic string param +# requires: set_event synthetic_events events/sched/sched_process_exec/hist "can be any field, or the special string 'common_stacktrace'":README + +fail() { #msg + echo $1 + exit_fail +} + +echo "Test create synthetic event with stack" + +echo 's:wake_lat pid_t pid; u64 delta; unsigned long[] stack;' > dynamic_events +echo 'hist:keys=next_pid:ts=common_timestamp.usecs,st=common_stacktrace if prev_state == 1||prev_state == 2' >> events/sched/sched_switch/trigger +echo 'hist:keys=prev_pid:delta=common_timestamp.usecs-$ts,s=$st:onmax($delta).trace(wake_lat,prev_pid,$delta,$s)' >> events/sched/sched_switch/trigger +echo 1 > events/synthetic/wake_lat/enable +sleep 1 + +if ! grep -q "=>.*sched" trace; then + fail "Failed to create synthetic event with stack" +fi + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc index 59216f3cfb12..366f1f3ad906 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc @@ -32,6 +32,10 @@ grep "myevent[[:space:]]u64 var1" synthetic_events # it is not possible to add same name event ! echo "myevent u64 var2" >> synthetic_events +# make sure !synthetic event doesn't require a field +echo "!myevent" >> synthetic_events +echo "myevent u64 var1" >> synthetic_events + # Non-append open will cleanup all events and add new one echo "myevent u64 var2" > synthetic_events @@ -66,6 +70,12 @@ grep "myevent[[:space:]]unsigned long var" synthetic_events echo "myevent char var[10]" > synthetic_events grep "myevent[[:space:]]char\[10\] var" synthetic_events +if grep -q 'long\[\]' README; then + # test stacktrace type + echo "myevent unsigned long[] var" > synthetic_events + grep "myevent[[:space:]]unsigned long\[\] var" synthetic_events +fi + do_reset exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc new file mode 100644 index 000000000000..b927ee54c02d --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic_event_syntax_errors.tc @@ -0,0 +1,38 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test synthetic_events syntax parser errors +# requires: synthetic_events error_log "' >> synthetic_events":README + +check_error() { # command-with-error-pos-by-^ + ftrace_errlog_check 'synthetic_events' "$1" 'synthetic_events' +} + +check_dyn_error() { # command-with-error-pos-by-^ + ftrace_errlog_check 'synthetic_events' "$1" 'dynamic_events' +} + +check_error 'myevent ^chr arg' # INVALID_TYPE +check_error 'myevent ^unsigned arg' # INCOMPLETE_TYPE + +check_error 'myevent char ^str]; int v' # BAD_NAME +check_error '^mye-vent char str[]' # BAD_NAME +check_error 'myevent char ^st-r[]' # BAD_NAME + +check_error 'myevent char str;^[]' # INVALID_FIELD +check_error 'myevent char str; ^int' # INVALID_FIELD + +check_error 'myevent char ^str[; int v' # INVALID_ARRAY_SPEC +check_error 'myevent char ^str[kdjdk]' # INVALID_ARRAY_SPEC +check_error 'myevent char ^str[257]' # INVALID_ARRAY_SPEC + +check_error '^mye;vent char str[]' # INVALID_CMD +check_error '^myevent ; char str[]' # INVALID_CMD +check_error '^myevent; char str[]' # INVALID_CMD +check_error '^myevent ;char str[]' # INVALID_CMD +check_error '^; char str[]' # INVALID_CMD +check_error '^;myevent char str[]' # INVALID_CMD +check_error '^myevent' # INVALID_CMD + +check_dyn_error '^s:junk/myevent char str[' # INVALID_DYN_CMD + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-trace-action-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-trace-action-hist.tc index c126d2350a6d..d7312047ce28 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-trace-action-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-trace-action-hist.tc @@ -1,7 +1,7 @@ #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # description: event trigger - test inter-event histogram trigger trace action -# requires: set_event synthetic_events events/sched/sched_process_fork/hist "trace(<synthetic_event>":README +# requires: set_event synthetic_events events/sched/sched_process_fork/hist "trace(<synthetic_event>":README ping:program fail() { #msg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc new file mode 100644 index 000000000000..05ffba299dbf --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc @@ -0,0 +1,63 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event trigger - test histogram expression parsing +# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist error_log "<var1>=<field|var_ref|numeric_literal>":README + + +fail() { #msg + echo $1 + exit_fail +} + +test_hist_expr() { # test_name expression expected_val + trigger="events/sched/sched_process_fork/trigger" + + reset_trigger_file $trigger + + echo "Test hist trigger expressions - $1" + + echo "hist:keys=common_pid:x=$2" > $trigger + + for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done + + actual=`grep -o 'x=[[:digit:]]*' $trigger | awk -F= '{ print $2 }'` + + if [ $actual != $3 ]; then + fail "Failed hist trigger expression evaluation: Expression: $2 Expected: $3, Actual: $actual" + fi + + reset_trigger_file $trigger +} + +check_error() { # test_name command-with-error-pos-by-^ + trigger="events/sched/sched_process_fork/trigger" + + echo "Test hist trigger expressions - $1" + ftrace_errlog_check 'hist:sched:sched_process_fork' "$2" $trigger +} + +test_hist_expr "Variable assignment" "123" "123" + +test_hist_expr "Subtraction not associative" "16-8-4-2" "2" + +test_hist_expr "Division not associative" "64/8/4/2" "1" + +test_hist_expr "Same precedence operators (+,-) evaluated left to right" "16-8+4+2" "14" + +test_hist_expr "Same precedence operators (*,/) evaluated left to right" "4*3/2*2" "12" + +test_hist_expr "Multiplication evaluated before addition/subtraction" "4+3*2-2" "8" + +test_hist_expr "Division evaluated before addition/subtraction" "4+6/2-2" "5" + +# err pos for "too many subexpressions" is dependent on where +# the last subexpression was detected. This can vary depending +# on how the expression tree was generated. +check_error "Too many subexpressions" 'hist:keys=common_pid:x=32+^10*3/20-4' +check_error "Too many subexpressions" 'hist:keys=common_pid:x=^1+2+3+4+5' + +check_error "Unary minus not supported in subexpression" 'hist:keys=common_pid:x=-(^1)+2' + +check_error "Division by zero" 'hist:keys=common_pid:x=3/^0' + +exit 0 diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc index 4562e13cb26b..717898894ef7 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc @@ -40,7 +40,7 @@ grep "id: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \ reset_trigger -echo "Test histgram with log2 modifier" +echo "Test histogram with log2 modifier" echo 'hist:keys=bytes_req.log2' > events/kmem/kmalloc/trigger for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc index 2950bfbc6fce..adae72665500 100644 --- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc +++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc @@ -39,6 +39,24 @@ grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \ reset_trigger +echo "Test histogram with sym modifier" + +echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger +for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done +grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \ + fail "sym modifier on kmalloc call_site did not work" + +reset_trigger + +echo "Test histogram with sym-offset modifier" + +echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger +for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done +grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \ + fail "sym-offset modifier on kmalloc call_site 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 |