diff mbox series

[bpf,v4,01/14] bpf/tests: Allow different number of runs per test case

Message ID 20210914091842.4186267-2-johan.almbladh@anyfinetworks.com (mailing list archive)
State Accepted
Commit 540e44daebdf412f3457c222bd36b2bccca5d643
Delegated to: BPF
Headers show
Series bpf/tests: Extend JIT test suite coverage | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for bpf
netdev/subject_prefix success Link
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 100 this patch: 100
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 16 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 100 this patch: 100
netdev/header_inline success Link
bpf/vmtest-bpf-PR success PR summary
bpf/vmtest-bpf success VM_Test

Commit Message

Johan Almbladh Sept. 14, 2021, 9:18 a.m. UTC
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 mbox series

Patch

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;