diff options
3 files changed, 31 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 78ed5f1baa8c..b90eecd27dfc 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5757,7 +5757,7 @@ static const char readme_msg[] = #ifdef CONFIG_SYNTH_EVENTS " events/synthetic_events\t- Create/append/remove/show synthetic events\n" "\t Write into this file to define/undefine new synthetic events.\n" - "\t example: echo 'myevent u64 lat; char name[]' >> synthetic_events\n" + "\t example: echo 'myevent u64 lat; char name[]; long[] stack' >> synthetic_events\n" #endif #endif ; 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..755dbe94ccf4 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-stack.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 +# requires: set_event synthetic_events events/sched/sched_process_exec/hist "long[]' >> synthetic_events":README + +fail() { #msg + echo $1 + exit_fail +} + +echo "Test create synthetic event with stack" + + +echo 's:wake_lat pid_t pid; u64 delta; unsigned long[] stack;' > dynamic_events +echo 'hist:keys=next_pid:ts=common_timestamp.usecs,st=stacktrace if prev_state == 1||prev_state == 2' >> events/sched/sched_switch/trigger +echo 'hist:keys=prev_pid:delta=common_timestamp.usecs-$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 2968cdc7df30..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 @@ -70,6 +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 |