Resguardo inicial

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-action-hist-xfail.tc

@@ -0,0 +1,20 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test inter-event histogram trigger expected fail actions
+# requires: set_event snapshot "snapshot()":README
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test expected snapshot action failure"
+
+echo 'hist:keys=comm:onmatch(sched.sched_wakeup).snapshot()' >> events/sched/sched_waking/trigger && exit_fail
+
+echo "Test expected save action failure"
+
+echo 'hist:keys=comm:onmatch(sched.sched_wakeup).save(comm,prio)' >> events/sched/sched_waking/trigger && exit_fail
+
+exit_xfail

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-field-variable-support.tc

@@ -0,0 +1,33 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test field variable support"
+
+echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
+echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
+echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$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
+echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
+
+ping $LOCALHOST -c 3
+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
+    fail "Failed to create inter-event histogram"
+fi
+
+if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
+    fail "Failed to create histogram with field variable"
+fi
+
+echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-$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
+
+if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
+    fail "Failed to remove histogram with field variable"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-fully-qualified-var-ref.tc

@@ -0,0 +1,34 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test fully-qualified variable reference support
+# requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test fully-qualified variable reference support"
+
+echo 'wakeup_latency u64 lat; pid_t pid; int prio; char comm[16]' > synthetic_events
+echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
+echo 'hist:keys=comm:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
+echo 'hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-sched.sched_wakeup.$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
+echo 'hist:keys=pid,prio,comm:vals=lat:sort=pid,prio' > events/synthetic/wakeup_latency/trigger
+
+ping $LOCALHOST -c 3
+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
+    fail "Failed to create inter-event histogram"
+fi
+
+if ! grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
+    fail "Failed to create histogram with fully-qualified variable reference"
+fi
+
+echo '!hist:keys=next_comm:wakeup_lat=common_timestamp.usecs-sched.sched_wakeup.$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
+
+if grep -q "synthetic_prio=prio" events/sched/sched_waking/hist; then
+    fail "Failed to remove histogram with fully-qualified variable reference"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc

@@ -0,0 +1,37 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'waking_latency  u64 lat pid_t pid' > synthetic_events
+if [ ! -d events/synthetic/waking_latency ]; then
+    fail "Failed to create waking_latency synthetic event"
+fi
+
+echo "Test combined histogram"
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
+echo 'hist:keys=pid:waking_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger
+echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger
+
+echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events
+echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger
+
+echo 'waking_plus_wakeup_latency u64 lat; pid_t pid' >> synthetic_events
+echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$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_plus_wakeup_latency/hist; then
+    fail "Failed to create combined histogram"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-multi-actions-accept.tc

@@ -0,0 +1,22 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test multiple actions on hist trigger
+# requires: set_event synthetic_events events/sched/sched_process_fork/hist
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test multiple actions on hist trigger"
+echo 'wakeup_latency u64 lat; pid_t pid' >> synthetic_events
+TRIGGER1=events/sched/sched_wakeup/trigger
+TRIGGER2=events/sched/sched_switch/trigger
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="cyclictest"' > $TRIGGER1
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0 if next_comm=="cyclictest"' >> $TRIGGER2
+echo 'hist:keys=next_pid:onmatch(sched.sched_wakeup).wakeup_latency(sched.sched_switch.$wakeup_lat,next_pid) if next_comm=="cyclictest"' >> $TRIGGER2
+echo 'hist:keys=next_pid:onmatch(sched.sched_wakeup).wakeup_latency(sched.sched_switch.$wakeup_lat,prev_pid) if next_comm=="cyclictest"' >> $TRIGGER2
+echo 'hist:keys=next_pid if next_comm=="cyclictest"' >> $TRIGGER2
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onchange-action-hist.tc

@@ -0,0 +1,25 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test inter-event histogram trigger onchange action
+# requires: set_event "onchange(var)":README ping:program
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test onchange action"
+
+echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> events/sched/sched_waking/trigger
+
+ping $LOCALHOST -c 3
+nice -n 1 ping $LOCALHOST -c 3
+
+if ! grep -q "changed:" events/sched/sched_waking/hist; then
+    fail "Failed to create onchange action inter-event histogram"
+fi
+
+echo '!hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> events/sched/sched_waking/trigger
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-action-hist.tc

@@ -0,0 +1,30 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
+if [ ! -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to create wakeup_latency synthetic event"
+fi
+
+echo "Test create histogram for synthetic event"
+echo "Test histogram variables,simple expression support and onmatch action"
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
+echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
+
+ping $LOCALHOST -c 5
+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
+    fail "Failed to create onmatch action inter-event histogram"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmatch-onmax-action-hist.tc

@@ -0,0 +1,30 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
+if [ ! -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to create wakeup_latency synthetic event"
+fi
+
+echo "Test create histogram for synthetic event"
+echo "Test histogram variables,simple expression support and onmatch-onmax action"
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$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
+echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
+
+ping $LOCALHOST -c 5
+if [ ! grep -q "ping" events/synthetic/wakeup_latency/hist -o ! grep -q "max:" events/sched/sched_switch/hist]; then
+    fail "Failed to create onmatch-onmax action inter-event histogram"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-onmax-action-hist.tc

@@ -0,0 +1,28 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
+if [ ! -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to create wakeup_latency synthetic event"
+fi
+
+echo "Test onmax action"
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_waking/trigger
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
+
+ping $LOCALHOST -c 3
+if ! grep -q "max:" events/sched/sched_switch/hist; then
+    fail "Failed to create onmax action inter-event histogram"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-snapshot-action-hist.tc

@@ -0,0 +1,33 @@
+#!/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 ping:program
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test snapshot action"
+
+echo 1 > events/sched/enable
+
+echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> events/sched/sched_waking/trigger
+
+ping $LOCALHOST -c 3
+nice -n 1 ping $LOCALHOST -c 3
+
+echo 0 > tracing_on
+
+if ! grep -q "changed:" events/sched/sched_waking/hist; then
+    fail "Failed to create onchange action inter-event histogram"
+fi
+
+if ! grep -q "comm=ping" snapshot; then
+    fail "Failed to create snapshot action inter-event histogram"
+fi
+
+echo '!hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> events/sched/sched_waking/trigger
+
+exit 0

linux-7.2.3/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

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc

@@ -0,0 +1,34 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test synthetic event create remove
+# requires: set_event synthetic_events
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
+if [ ! -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to create wakeup_latency synthetic event"
+fi
+
+reset_trigger
+
+echo "Test remove synthetic event"
+echo '!wakeup_latency  u64 lat pid_t pid char comm[16]' >> synthetic_events
+if [ -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to delete wakeup_latency synthetic event"
+fi
+
+reset_trigger
+
+echo "Test create synthetic event with an error"
+echo 'wakeup_latency  u64 lat pid_t pid char' > synthetic_events > /dev/null
+if [ -d events/synthetic/wakeup_latency ]; then
+    fail "Created wakeup_latency synthetic event with an invalid format"
+fi
+
+exit 0

linux-7.2.3/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

linux-7.2.3/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

linux-7.2.3/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

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc

@@ -0,0 +1,81 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test synthetic_events syntax parser
+# requires: set_event synthetic_events
+
+do_reset() {
+    reset_trigger
+    echo > set_event
+    clear_trace
+}
+
+fail() { #msg
+    do_reset
+    echo $1
+    exit_fail
+}
+
+reset_tracer
+do_reset
+
+echo "Test synthetic_events syntax parser"
+
+echo > synthetic_events
+
+# synthetic event must have a field
+! echo "myevent" >> synthetic_events
+echo "myevent u64 var1" >> synthetic_events
+
+# synthetic event must be found in synthetic_events
+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
+
+# multiple fields with different spaces
+echo "myevent u64 var1; u64 var2;" > synthetic_events
+grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events
+echo "myevent u64 var1 ; u64 var2 ;" > synthetic_events
+grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events
+echo "myevent u64 var1 ;u64 var2" > synthetic_events
+grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events
+
+# test field types
+echo "myevent u32 var" > synthetic_events
+echo "myevent u16 var" > synthetic_events
+echo "myevent u8 var" > synthetic_events
+echo "myevent s64 var" > synthetic_events
+echo "myevent s32 var" > synthetic_events
+echo "myevent s16 var" > synthetic_events
+echo "myevent s8 var" > synthetic_events
+
+echo "myevent char var" > synthetic_events
+echo "myevent int var" > synthetic_events
+echo "myevent long var" > synthetic_events
+echo "myevent pid_t var" > synthetic_events
+
+echo "myevent unsigned char var" > synthetic_events
+echo "myevent unsigned int var" > synthetic_events
+echo "myevent unsigned long var" > synthetic_events
+grep "myevent[[:space:]]unsigned long var" synthetic_events
+
+# test string type
+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

linux-7.2.3/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

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-trace-action-hist.tc

@@ -0,0 +1,31 @@
+#!/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 ping:program
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test create synthetic event"
+
+echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
+if [ ! -d events/synthetic/wakeup_latency ]; then
+    fail "Failed to create wakeup_latency synthetic event"
+fi
+
+echo "Test create histogram for synthetic event using trace action"
+echo "Test histogram variables,simple expression support and trace action"
+
+echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
+echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).trace(wakeup_latency,$wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
+echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
+
+ping $LOCALHOST -c 5
+
+if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
+    fail "Failed to create trace action inter-event histogram"
+fi
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-eventonoff.tc

@@ -0,0 +1,45 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test event enable/disable trigger
+# requires: set_event events/sched/sched_process_fork/trigger
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+FEATURE=`grep enable_event events/sched/sched_process_fork/trigger`
+if [ -z "$FEATURE" ]; then
+    echo "event enable/disable trigger is not supported"
+    exit_unsupported
+fi
+
+echo "Test enable_event trigger"
+echo 0 > events/sched/sched_switch/enable
+echo 'enable_event:sched:sched_switch' > events/sched/sched_process_fork/trigger
+( echo "forked")
+if [ `cat events/sched/sched_switch/enable` != '1*' ]; then
+    fail "enable_event trigger on sched_process_fork did not work"
+fi
+
+reset_trigger
+
+echo "Test disable_event trigger"
+echo 1 > events/sched/sched_switch/enable
+echo 'disable_event:sched:sched_switch' > events/sched/sched_process_fork/trigger
+( echo "forked")
+if [ `cat events/sched/sched_switch/enable` != '0*' ]; then
+    fail "disable_event trigger on sched_process_fork did not work"
+fi
+
+reset_trigger
+
+echo "Test semantic error for event enable/disable trigger"
+! echo 'enable_event:nogroup:noevent' > events/sched/sched_process_fork/trigger
+! echo 'disable_event+1' > events/sched/sched_process_fork/trigger
+echo 'enable_event:sched:sched_switch' > events/sched/sched_process_fork/trigger
+! echo 'enable_event:sched:sched_switch' > events/sched/sched_process_fork/trigger
+! echo 'disable_event:sched:sched_switch' > events/sched/sched_process_fork/trigger
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-filter.tc

@@ -0,0 +1,38 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test trigger filter
+# requires: set_event events/sched/sched_process_fork/trigger
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test trigger filter"
+echo 1 > tracing_on
+echo 'traceoff if child_pid == 0' > events/sched/sched_process_fork/trigger
+( echo "forked")
+if [ `cat tracing_on` -ne 1 ]; then
+    fail "traceoff trigger on sched_process_fork did not work"
+fi
+
+reset_trigger
+
+echo "Test semantic error for trigger filter"
+! echo 'traceoff if a' > events/sched/sched_process_fork/trigger
+! echo 'traceoff if common_pid=0' > events/sched/sched_process_fork/trigger
+! echo 'traceoff if common_pid==b' > events/sched/sched_process_fork/trigger
+echo 'traceoff if common_pid == 0' > events/sched/sched_process_fork/trigger
+echo '!traceoff' > events/sched/sched_process_fork/trigger
+! echo 'traceoff if common_pid == child_pid' > events/sched/sched_process_fork/trigger
+echo 'traceoff if common_pid <= 0' > events/sched/sched_process_fork/trigger
+echo '!traceoff' > events/sched/sched_process_fork/trigger
+echo 'traceoff if common_pid >= 0' > events/sched/sched_process_fork/trigger
+echo '!traceoff' > events/sched/sched_process_fork/trigger
+echo 'traceoff if parent_pid >= 0 && child_pid >= 0' > events/sched/sched_process_fork/trigger
+echo '!traceoff' > events/sched/sched_process_fork/trigger
+echo 'traceoff if parent_pid >= 0 || child_pid >= 0' > events/sched/sched_process_fork/trigger
+echo '!traceoff' > events/sched/sched_process_fork/trigger
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-expressions.tc

@@ -0,0 +1,64 @@
+#!/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
+# flags: instance
+
+
+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

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-mod.tc

@@ -0,0 +1,50 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test histogram modifiers
+# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+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: \(unknown_\|sys_\)" events/raw_syscalls/sys_exit/hist > /dev/null || \
+    fail "syscall modifier on raw_syscalls/sys_exit did not work"
+
+
+reset_trigger
+
+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
+grep 'bytes_req: ~ 2^[0-9]*' events/kmem/kmalloc/hist > /dev/null || \
+    fail "log2 modifier on kmem/kmalloc did not work"
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-poll.tc

@@ -0,0 +1,74 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test poll wait on histogram
+# requires: set_event events/sched/sched_process_exit/trigger events/sched/sched_process_exit/hist
+# flags: instance
+
+POLL=${FTRACETEST_ROOT}/poll
+
+if [ ! -x ${POLL} ]; then
+  echo "poll program is not compiled!"
+  exit_unresolved
+fi
+
+EVENT=events/sched/sched_process_exit/
+
+# Check poll ops is supported. Before implementing poll on hist file, it
+# returns soon with POLLIN | POLLOUT, but not POLLPRI.
+
+# This must wait >1 sec and return 1 (timeout).
+set +e
+${POLL} -I -t 1000 ${EVENT}/hist
+ret=$?
+set -e
+if [ ${ret} != 1 ]; then
+  echo "poll on hist file is not supported"
+  exit_unsupported
+fi
+
+# Test POLLIN
+echo > trace
+echo 'hist:key=comm if comm =="sleep"' > ${EVENT}/trigger
+echo 1 > ${EVENT}/enable
+
+# This sleep command will exit after 2 seconds.
+sleep 2 &
+BGPID=$!
+# if timeout happens, poll returns 1.
+${POLL} -I -t 4000 ${EVENT}/hist
+echo 0 > tracing_on
+
+if [ -d /proc/${BGPID} ]; then
+  echo "poll exits too soon"
+  kill -KILL ${BGPID} ||:
+  exit_fail
+fi
+
+if ! grep -qw "sleep" trace; then
+  echo "poll exits before event happens"
+  exit_fail
+fi
+
+# Test POLLPRI
+echo > trace
+echo 1 > tracing_on
+
+# This sleep command will exit after 2 seconds.
+sleep 2 &
+BGPID=$!
+# if timeout happens, poll returns 1.
+${POLL} -P -t 4000 ${EVENT}/hist
+echo 0 > tracing_on
+
+if [ -d /proc/${BGPID} ]; then
+  echo "poll exits too soon"
+  kill -KILL ${BGPID} ||:
+  exit_fail
+fi
+
+if ! grep -qw "sleep" trace; then
+  echo "poll exits before event happens"
+  exit_fail
+fi
+
+exit_pass

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist-syntax-errors.tc

@@ -0,0 +1,16 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test histogram parser errors
+# requires: set_event events/kmem/kmalloc/trigger events/kmem/kmalloc/hist error_log
+
+check_error() { # command-with-error-pos-by-^
+    ftrace_errlog_check 'hist:kmem:kmalloc' "$1" 'events/kmem/kmalloc/trigger'
+}
+
+check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid,^junk'	# INVALID_SORT_FIELD
+check_error 'hist:keys=common_pid:vals=bytes_req:^sort='		# EMPTY_ASSIGNMENT
+check_error 'hist:keys=common_pid:vals=bytes_req:^sort=common_pid,'	# EMPTY_SORT_FIELD
+check_error 'hist:keys=common_pid:vals=bytes_req:sort=common_pid.^junk'	# INVALID_SORT_MODIFIER
+check_error 'hist:keys=common_pid:vals=bytes_req,bytes_alloc:^sort=common_pid,bytes_req,bytes_alloc'	# TOO_MANY_SORT_FIELDS
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc

@@ -0,0 +1,76 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test histogram trigger
+# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test histogram basic trigger"
+
+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 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
+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"
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-multihist.tc

@@ -0,0 +1,44 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test multiple histogram triggers
+# requires: set_event events/sched/sched_process_fork/trigger events/sched/sched_process_fork/hist
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test histogram multiple triggers"
+
+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"
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc

@@ -0,0 +1,36 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test snapshot-trigger
+# requires: set_event events/sched/sched_process_fork/trigger snapshot
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+FEATURE=`grep snapshot events/sched/sched_process_fork/trigger`
+if [ -z "$FEATURE" ]; then
+    echo "snapshot trigger is not supported"
+    exit_unsupported
+fi
+
+echo "Test snapshot trigger"
+echo 0 > snapshot
+echo 1 > events/sched/sched_process_fork/enable
+( echo "forked")
+echo 'snapshot:1' > events/sched/sched_process_fork/trigger
+( echo "forked")
+grep sched_process_fork snapshot > /dev/null || \
+    fail "snapshot trigger on sched_process_fork did not work"
+
+reset_trigger
+echo 0 > snapshot
+echo 0 > events/sched/sched_process_fork/enable
+
+echo "Test snapshot semantic errors"
+
+! echo "snapshot+1" > events/sched/sched_process_fork/trigger
+echo "snapshot" > events/sched/sched_process_fork/trigger
+! echo "snapshot" > events/sched/sched_process_fork/trigger
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-stacktrace.tc

@@ -0,0 +1,33 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test stacktrace-trigger
+# requires: set_event events/sched/sched_process_fork/trigger
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+FEATURE=`grep stacktrace events/sched/sched_process_fork/trigger`
+if [ -z "$FEATURE" ]; then
+    echo "stacktrace trigger is not supported"
+    exit_unsupported
+fi
+
+echo "Test stacktrace trigger"
+echo 0 > trace
+echo 0 > options/stacktrace
+echo 'stacktrace' > events/sched/sched_process_fork/trigger
+( echo "forked")
+grep "<stack trace>" trace > /dev/null || \
+    fail "stacktrace trigger on sched_process_fork did not work"
+
+reset_trigger
+
+echo "Test stacktrace semantic errors"
+
+! echo "stacktrace:foo" > events/sched/sched_process_fork/trigger
+echo "stacktrace" > events/sched/sched_process_fork/trigger
+! echo "stacktrace" > events/sched/sched_process_fork/trigger
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-hist.tc

@@ -0,0 +1,19 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: trace_marker trigger - test histogram trigger
+# requires: set_event events/ftrace/print/trigger events/ftrace/print/hist
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test histogram trace_marker trigger"
+
+echo 'hist:keys=common_pid' > events/ftrace/print/trigger
+for i in `seq 1 10` ; do echo "hello" > trace_marker; done
+grep 'hitcount: *10$' events/ftrace/print/hist > /dev/null || \
+    fail "hist trigger did not trigger correct times on trace_marker"
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc

@@ -0,0 +1,43 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: trace_marker trigger - test snapshot trigger
+# requires: set_event snapshot events/ftrace/print/trigger
+# flags: instance
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+test_trace() {
+    file=$1
+    x=$2
+
+    cat $file | while read line; do
+	comment=`echo $line | sed -e 's/^#//'`
+	if [ "$line" != "$comment" ]; then
+	    continue
+	fi
+	echo "testing $line for >$x<"
+	match=`echo $line | sed -e "s/>$x<//"`
+	if [ "$line" = "$match" ]; then
+	    fail "$line does not have >$x< in it"
+	fi
+	x=$((x+2))
+    done
+}
+
+echo "Test snapshot trace_marker trigger"
+
+echo 'snapshot' > events/ftrace/print/trigger
+
+# make sure the snapshot is allocated
+
+grep -q 'Snapshot is allocated' snapshot
+
+for i in `seq 1 10` ; do echo "hello >$i<" > trace_marker; done
+
+test_trace trace 1
+test_trace snapshot 2
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic-kernel.tc

@@ -0,0 +1,27 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: trace_marker trigger - test histogram with synthetic event against kernel event
+# requires: set_event synthetic_events events/sched/sched_waking events/ftrace/print/trigger events/ftrace/print/hist
+# flags:
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test histogram kernel event to trace_marker latency histogram trigger"
+
+echo 'latency u64 lat' > synthetic_events
+echo 'hist:keys=pid:ts0=common_timestamp.usecs' > events/sched/sched_waking/trigger
+echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).latency($lat)' > events/ftrace/print/trigger
+echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
+sleep 1
+echo "hello" > trace_marker
+
+grep 'hitcount: *1$' events/ftrace/print/hist > /dev/null || \
+    fail "hist trigger did not trigger correct times on trace_marker"
+
+grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
+    fail "hist trigger did not trigger "
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-synthetic.tc

@@ -0,0 +1,30 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: trace_marker trigger - test histogram with synthetic event
+# requires: set_event synthetic_events events/ftrace/print/trigger events/ftrace/print/hist
+# flags:
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test histogram trace_marker to trace_marker latency histogram trigger"
+
+echo 'latency u64 lat' > synthetic_events
+echo 'hist:keys=common_pid:ts0=common_timestamp.usecs if buf == "start"' > events/ftrace/print/trigger
+echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(ftrace.print).latency($lat) if buf == "end"' >> events/ftrace/print/trigger
+echo 'hist:keys=common_pid,lat:sort=lat' > events/synthetic/latency/trigger
+echo -n "start" > trace_marker
+echo -n "end" > trace_marker
+
+cnt=`grep 'hitcount: *1$' events/ftrace/print/hist | wc -l`
+
+if [ $cnt -ne 2 ]; then
+    fail "hist trace_marker trigger did not trigger correctly"
+fi
+
+grep 'hitcount: *1$' events/synthetic/latency/hist > /dev/null || \
+    fail "hist trigger did not trigger "
+
+exit 0

linux-7.2.3/tools/testing/selftests/ftrace/test.d/trigger/trigger-traceonoff.tc

@@ -0,0 +1,38 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test traceon/off trigger
+# requires: set_event events/sched/sched_process_fork/trigger
+
+fail() { #msg
+    echo $1
+    exit_fail
+}
+
+echo "Test traceoff trigger"
+echo 1 > tracing_on
+echo 'traceoff' > events/sched/sched_process_fork/trigger
+( echo "forked")
+if [ `cat tracing_on` -ne 0 ]; then
+    fail "traceoff trigger on sched_process_fork did not work"
+fi
+
+reset_trigger
+
+echo "Test traceon trigger"
+echo 0 > tracing_on
+echo 'traceon' > events/sched/sched_process_fork/trigger
+( echo "forked")
+if [ `cat tracing_on` -ne 1 ]; then
+    fail "traceoff trigger on sched_process_fork did not work"
+fi
+
+reset_trigger
+
+echo "Test semantic error for traceoff/on trigger"
+! echo 'traceoff:badparam' > events/sched/sched_process_fork/trigger
+! echo 'traceoff+0' > events/sched/sched_process_fork/trigger
+echo 'traceon' > events/sched/sched_process_fork/trigger
+! echo 'traceon' > events/sched/sched_process_fork/trigger
+! echo 'traceoff' > events/sched/sched_process_fork/trigger
+
+exit 0