440 lines
14 KiB
Diff
440 lines
14 KiB
Diff
From: Rajvi Jingar <rajvi.jingar@intel.com>
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Date: Fri, 17 Nov 2017 14:33:16 -0600
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Subject: [PATCH 37/37] selftests: ftrace: Add inter-event hist triggers
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testcases
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.14/older/patches-4.14.1-rt3.tar.xz
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This adds inter-event hist triggers testcases which covers following:
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- create/remove synthetic event
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- disable histogram for synthetic event
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- extended error support
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- field variable support
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- histogram variables
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- histogram trigger onmatch action
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- histogram trigger onmax action
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- histogram trigger onmatch-onmax action
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- simple expression support
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- combined histogram
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Here is the test result.
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=== Ftrace unit tests ===
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[1] event trigger - test extended error support [PASS]
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[2] event trigger - test field variable support [PASS]
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[3] event trigger - test inter-event combined histogram trigger [PASS]
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[4] event trigger - test inter-event histogram trigger onmatch action [PASS]
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[5] event trigger - test inter-event histogram trigger onmatch-onmax action [PASS]
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[6] event trigger - test inter-event histogram trigger onmax action [PASS]
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[7] event trigger - test synthetic event create remove [PASS]
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Signed-off-by: Rajvi Jingar <rajvi.jingar@intel.com>
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Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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tools/testing/selftests/ftrace/test.d/functions | 7 +
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-extended-error-support.tc | 39 ++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc | 54 +++++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc | 58 ++++++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc | 50 ++++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc | 50 ++++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc | 48 ++++++++
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tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc | 54 +++++++++
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8 files changed, 360 insertions(+)
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-extended-error-support.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc
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create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc
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--- a/tools/testing/selftests/ftrace/test.d/functions
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+++ b/tools/testing/selftests/ftrace/test.d/functions
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@@ -55,6 +55,13 @@ disable_events() {
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echo 0 > events/enable
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}
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+clear_synthetic_events() { # reset all current synthetic events
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+ grep -v ^# synthetic_events |
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+ while read line; do
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+ echo "!$line" >> synthetic_events
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+ done
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+}
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+
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initialize_ftrace() { # Reset ftrace to initial-state
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# As the initial state, ftrace will be set to nop tracer,
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# no events, no triggers, no filters, no function filters,
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-extended-error-support.tc
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@@ -0,0 +1,39 @@
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+#!/bin/sh
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+# description: event trigger - test extended error support
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+
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+reset_tracer
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+do_reset
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+
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+echo "Test extended error support"
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger &>/dev/null
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+if ! grep -q "ERROR:" events/sched/sched_wakeup/hist; then
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+ fail "Failed to generate extended error in histogram"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc
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@@ -0,0 +1,54 @@
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+#!/bin/sh
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+# description: event trigger - test field variable support
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+clear_synthetic_events
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+reset_tracer
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+do_reset
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+
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+echo "Test field variable support"
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+
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+echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
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+echo 'hist:keys=comm:ts0=$common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
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+echo 'hist:keys=next_comm:wakeup_lat=$common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
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+echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
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+
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+ping localhost -c 3
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+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
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+ fail "Failed to create inter-event histogram"
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+fi
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+
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+if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
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+ fail "Failed to create histogram with field variable"
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+fi
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+
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+echo '!hist:keys=next_comm:wakeup_lat=$common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).wakeup_latency($wakeup_lat,next_pid,sched.sched_waking.prio,next_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
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+
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+if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
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+ fail "Failed to remove histogram with field variable"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc
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@@ -0,0 +1,58 @@
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+#!/bin/sh
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+# description: event trigger - test inter-event combined histogram trigger
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+reset_tracer
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+do_reset
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+clear_synthetic_events
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+
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+echo "Test create synthetic event"
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+
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+echo 'waking_latency u64 lat pid_t pid' > synthetic_events
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+if [ ! -d events/synthetic/waking_latency ]; then
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+ fail "Failed to create waking_latency synthetic event"
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+fi
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+
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+echo "Test combined histogram"
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+
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
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+echo 'hist:keys=pid:waking_lat=$common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger
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+echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger
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+
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+echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events
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+echo 'hist:keys=pid:ts1=$common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger
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+echo 'hist:keys=next_pid:wakeup_lat=$common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger
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+
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+echo 'waking+wakeup_latency u64 lat; pid_t pid' >> synthetic_events
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+echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking+wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger
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+echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking+wakeup_latency/trigger
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+
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+ping localhost -c 3
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+if ! grep -q "pid:" events/synthetic/waking+wakeup_latency/hist; then
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+ fail "Failed to create combined histogram"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc
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@@ -0,0 +1,50 @@
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+#!/bin/sh
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+# description: event trigger - test inter-event histogram trigger onmatch action
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+clear_synthetic_events
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+reset_tracer
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+do_reset
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+
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+echo "Test create synthetic event"
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+
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+echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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+if [ ! -d events/synthetic/wakeup_latency ]; then
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+ fail "Failed to create wakeup_latency synthetic event"
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+fi
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+
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+echo "Test create histogram for synthetic event"
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+echo "Test histogram variables,simple expression support and onmatch action"
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+
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
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+echo 'hist:keys=next_pid:wakeup_lat=$common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
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+echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
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+ping localhost -c 5
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+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
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+ fail "Failed to create onmatch action inter-event histogram"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc
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@@ -0,0 +1,50 @@
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+#!/bin/sh
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+# description: event trigger - test inter-event histogram trigger onmatch-onmax action
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+clear_synthetic_events
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+reset_tracer
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+do_reset
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+
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+echo "Test create synthetic event"
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+
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+echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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+if [ ! -d events/synthetic/wakeup_latency ]; then
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+ fail "Failed to create wakeup_latency synthetic event"
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+fi
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+
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+echo "Test create histogram for synthetic event"
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+echo "Test histogram variables,simple expression support and onmatch-onmax action"
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+
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
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+echo 'hist:keys=next_pid:wakeup_lat=$common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm):onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
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+echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
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+ping localhost -c 5
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+if [ ! grep -q "ping" events/synthetic/wakeup_latency/hist -o ! grep -q "max:" events/sched/sched_switch/hist]; then
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+ fail "Failed to create onmatch-onmax action inter-event histogram"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc
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@@ -0,0 +1,48 @@
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+#!/bin/sh
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+# description: event trigger - test inter-event histogram trigger onmax action
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+
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+clear_synthetic_events
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+reset_tracer
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+do_reset
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+
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+echo "Test create synthetic event"
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+
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+echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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+if [ ! -d events/synthetic/wakeup_latency ]; then
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+ fail "Failed to create wakeup_latency synthetic event"
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+fi
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+
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+echo "Test onmax action"
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+
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+echo 'hist:keys=pid:ts0=$common_timestamp.usecs if comm=="ping"' >> events/sched/sched_waking/trigger
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+echo 'hist:keys=next_pid:wakeup_lat=$common_timestamp.usecs-$ts0:onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
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+ping localhost -c 3
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+if ! grep -q "max:" events/sched/sched_switch/hist; then
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+ fail "Failed to create onmax action inter-event histogram"
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+fi
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+
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+do_reset
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+
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+exit 0
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--- /dev/null
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+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc
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@@ -0,0 +1,54 @@
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+#!/bin/sh
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+# description: event trigger - test synthetic event create remove
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+do_reset() {
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+ reset_trigger
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+ echo > set_event
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+ clear_trace
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+}
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+
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+fail() { #msg
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+ do_reset
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+ echo $1
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+ exit_fail
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+}
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+
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+if [ ! -f set_event ]; then
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+ echo "event tracing is not supported"
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+ exit_unsupported
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+fi
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+
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+if [ ! -f synthetic_events ]; then
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+ echo "synthetic event is not supported"
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+ exit_unsupported
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+fi
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+
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+clear_synthetic_events
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+reset_tracer
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+do_reset
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+
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+echo "Test create synthetic event"
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+
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+echo 'wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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+if [ ! -d events/synthetic/wakeup_latency ]; then
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+ fail "Failed to create wakeup_latency synthetic event"
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+fi
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+
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+reset_trigger
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+
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+echo "Test create synthetic event with an error"
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+echo 'wakeup_latency u64 lat pid_t pid char' > synthetic_events > /dev/null
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+if [ -d events/synthetic/wakeup_latency ]; then
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+ fail "Created wakeup_latency synthetic event with an invalid format"
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+fi
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+
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+reset_trigger
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+
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+echo "Test remove synthetic event"
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+echo '!wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
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+if [ -d events/synthetic/wakeup_latency ]; then
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+ fail "Failed to delete wakeup_latency synthetic event"
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+fi
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+
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+do_reset
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+
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+exit 0
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