[PATCH bpf v4 01/14] bpf/tests: Allow different number of runs per test case
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STALE1850d
LANDED
From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Date: 2021-09-14 09:19:08
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), library code, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Andrew Morton, Linus Torvalds
Revision v4 of 4 in this series; landed in mainline as c2a228d69cef on 2021-09-28.
Revisions (4)
- v1 [diff vs current]
- v2 [diff vs current]
- v3 [diff vs current]
- v4 current
This patch allows a test cast to specify the number of runs to use. For compatibility with existing test case definitions, the default value 0 is interpreted as MAX_TESTRUNS. A reduced number of runs is useful for complex test programs where 1000 runs may take a very long time. Instead of reducing what is tested, one can instead reduce the number of times the test is run. Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com> --- lib/test_bpf.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 830a18ecffc8..c8bd3e9ab10a 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c@@ -80,6 +80,7 @@ struct bpf_test { int expected_errcode; /* used when FLAG_EXPECTED_FAIL is set in the aux */ __u8 frag_data[MAX_DATA]; int stack_depth; /* for eBPF only, since tests don't call verifier */ + int nr_testruns; /* Custom run count, defaults to MAX_TESTRUNS if 0 */ }; /* Large test cases need separate allocation and fill handler. */
@@ -8631,6 +8632,9 @@ static int run_one(const struct bpf_prog *fp, struct bpf_test *test) { int err_cnt = 0, i, runs = MAX_TESTRUNS; + if (test->nr_testruns) + runs = min(test->nr_testruns, MAX_TESTRUNS); + for (i = 0; i < MAX_SUBTESTS; i++) { void *data; u64 duration;
--
2.30.2