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rtla/timerlat: Test BPF mode

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Using the RTLA_NO_BPF environmental variable, execute rtla-timerlat
tests both with and without BPF support to cover both paths.

If rtla is built without BPF or the osnoise:timerlat_sample trace event
is not available, test only the non-BPF path.

Cc: John Kacur <jkacur@redhat.com>
Cc: Luis Goncalves <lgoncalv@redhat.com>
Cc: Gabriele Monaco <gmonaco@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Link: https://lore.kernel.org/20250218145859.27762-9-tglozar@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Tomas Glozar 2025-02-18 15:58:59 +01:00 committed by Steven Rostedt (Google)
parent 9a82a3fd9e
commit 005682b403
1 changed files with 14 additions and 0 deletions
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14
tools/tracing/rtla/tests/timerlat.t
View File

@ -4,7 +4,20 @@ source tests/engine.sh
test_begin
set_timeout 2m
timerlat_sample_event='/sys/kernel/tracing/events/osnoise/timerlat_sample'
if ldd $RTLA | grep libbpf >/dev/null && [ -d "$timerlat_sample_event" ]
then
# rtla build with BPF and system supports BPF mode
no_bpf_options='0 1'
else
no_bpf_options='1'
fi
# Do every test with and without BPF
for option in $no_bpf_options
do
export RTLA_NO_BPF=$option
check "verify help page" \
"timerlat --help"
check "verify -s/--stack" \
@ -23,5 +36,6 @@ check "verify -c/--cpus" \
"timerlat hist -c 0 -d 30s"
check "hist test in nanoseconds" \
"timerlat hist -i 2 -c 0 -n -d 30s"
done
test_end