Commit c2a228d6 authored by Johan Almbladh's avatar Johan Almbladh Committed by Daniel Borkmann
Browse files

bpf/tests: Allow different number of runs per test case 



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: default avatarJohan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210914091842.4186267-2-johan.almbladh@anyfinetworks.com
parent c3e8c44a

lib/test_bpf.c

+4 −0
Original line number Diff line number Diff line
@@ -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;