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From: Johan Almbladh <johan.almbladh@anyfinetworks.com>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org
Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
	john.fastabend@gmail.com, kpsingh@kernel.org, iii@linux.ibm.com,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	Johan Almbladh <johan.almbladh@anyfinetworks.com>
Subject: [PATCH bpf-next v3 01/13] bpf/tests: Allow different number of runs per test case
Date: Thu,  9 Sep 2021 16:32:51 +0200	[thread overview]
Message-ID: <20210909143303.811171-2-johan.almbladh@anyfinetworks.com> (raw)
In-Reply-To: <20210909143303.811171-1-johan.almbladh@anyfinetworks.com>

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


  reply	other threads:[~2021-09-09 14:44 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-09 14:32 [PATCH bpf-next v3 00/13] bpf/tests: Extend JIT test suite coverage Johan Almbladh
2021-09-09 14:32 ` Johan Almbladh [this message]
2021-09-09 14:32 ` [PATCH bpf-next v3 02/13] bpf/tests: Reduce memory footprint of test suite Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 03/13] bpf/tests: Add exhaustive tests of ALU shift values Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 04/13] bpf/tests: Add exhaustive tests of ALU operand magnitudes Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 05/13] bpf/tests: Add exhaustive tests of JMP " Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 06/13] bpf/tests: Add staggered JMP and JMP32 tests Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 07/13] bpf/tests: Add exhaustive test of LD_IMM64 immediate magnitudes Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 08/13] bpf/tests: Add test case flag for verifier zero-extension Johan Almbladh
2021-09-09 14:32 ` [PATCH bpf-next v3 09/13] bpf/tests: Add JMP tests with small offsets Johan Almbladh
2021-09-09 14:33 ` [PATCH bpf-next v3 10/13] bpf/tests: Add JMP tests with degenerate conditional Johan Almbladh
2021-09-09 14:33 ` [PATCH bpf-next v3 11/13] bpf/tests: Expand branch conversion JIT test Johan Almbladh
2021-09-09 14:33 ` [PATCH bpf-next v3 12/13] bpf/tests: Add more BPF_END byte order conversion tests Johan Almbladh
2021-09-09 14:33 ` [PATCH bpf-next v3 13/13] bpf/tests: Add tail call limit test with external function call Johan Almbladh
2021-09-10 19:47   ` Daniel Borkmann

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