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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc')
-rw-r--r-- | tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc b/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc new file mode 100644 index 000000000..9933ed24f --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/event/event-no-pid.tc @@ -0,0 +1,123 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: event tracing - restricts events based on pid notrace filtering +# requires: set_event events/sched set_event_pid set_event_notrace_pid +# flags: instance + +do_reset() { + echo > set_event + echo > set_event_pid + echo > set_event_notrace_pid + echo 0 > options/event-fork + echo 0 > events/enable + clear_trace + echo 1 > tracing_on +} + +fail() { #msg + cat trace + do_reset + echo $1 + exit_fail +} + +count_pid() { + pid=$@ + cat trace | grep -v '^#' | sed -e 's/[^-]*-\([0-9]*\).*/\1/' | grep $pid | wc -l +} + +count_no_pid() { + pid=$1 + cat trace | grep -v '^#' | sed -e 's/[^-]*-\([0-9]*\).*/\1/' | grep -v $pid | wc -l +} + +enable_system() { + system=$1 + + if [ -d events/$system ]; then + echo 1 > events/$system/enable + fi +} + +enable_events() { + echo 0 > tracing_on + # Enable common groups of events, as all events can allow for + # events to be traced via scheduling that we don't care to test. + enable_system syscalls + enable_system rcu + enable_system block + enable_system exceptions + enable_system irq + enable_system net + enable_system power + enable_system signal + enable_system sock + enable_system timer + enable_system thermal + echo 1 > tracing_on +} + +other_task() { + sleep .001 || usleep 1 || sleep 1 +} + +echo 0 > options/event-fork + +do_reset + +read mypid rest < /proc/self/stat + +echo $mypid > set_event_notrace_pid +grep -q $mypid set_event_notrace_pid + +enable_events + +yield + +echo 0 > tracing_on + +cnt=`count_pid $mypid` +if [ $cnt -ne 0 ]; then + fail "Filtered out task has events" +fi + +cnt=`count_no_pid $mypid` +if [ $cnt -eq 0 ]; then + fail "No other events were recorded" +fi + +do_reset + +echo $mypid > set_event_notrace_pid +echo 1 > options/event-fork + +enable_events + +yield & +child=$! +echo "child = $child" +wait $child + +# Be sure some other events will happen for small systems (e.g. 1 core) +other_task + +echo 0 > tracing_on + +cnt=`count_pid $mypid` +if [ $cnt -ne 0 ]; then + fail "Filtered out task has events" +fi + +cnt=`count_pid $child` +if [ $cnt -ne 0 ]; then + fail "Child of filtered out taskhas events" +fi + +cnt=`count_no_pid $mypid` +if [ $cnt -eq 0 ]; then + fail "No other events were recorded" +fi + +do_reset + +exit 0 |