Commit 005682b4 authored by Tomas Glozar's avatar Tomas Glozar Committed by Steven Rostedt (Google)
Browse files

rtla/timerlat: Test BPF mode 

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: default avatarTomas Glozar <tglozar@redhat.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 9a82a3fd

tools/tracing/rtla/tests/timerlat.t

+14 −0
Original line number Diff line number Diff line
@@ -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