selftests/bpf: Use read_perf_max_sample_freq() in perf_event_stackmap

Browse source

[ Upstream commit de6d014a09 ]

Currently, perf_event sample period in perf_event_stackmap is set too low
that the test fails randomly. Fix this by using the max sample frequency,
from read_perf_max_sample_freq().

Move read_perf_max_sample_freq() to testing_helpers.c. Replace the CHECK()
with if-printf, as CHECK is not available in testing_helpers.c.

Fixes: 1da4864c2b ("selftests/bpf: Add callchain_stackid")
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230412210423.900851-2-song@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Song Liu 2023-04-12 14:04:21 -07:00 • committed by Greg Kroah-Hartman

parent 160fcf5c6b

commit 67c81ecbf7

4 changed files with 24 additions and 16 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

tools/testing/selftests/bpf/prog_tests/perf_event_stackmap.c

View file

15

tools/testing/selftests/bpf/prog_tests/stacktrace_build_id_nmi.c

View file

20

tools/testing/selftests/bpf/testing_helpers.c

View file

2

tools/testing/selftests/bpf/testing_helpers.h

View file