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selftests/bpf: Skip all serial_test_get_branch_snapshot in vm

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Skipping the second half of the test is not enough to silent the warning
in dmesg. Skip the whole test before we can either properly silent the
warning in kernel, or fix LBR snapshot for VM.

Fixes: 025bd7c753 ("selftests/bpf: Add test for bpf_get_branch_snapshot")
Fixes: aa67fdb464 ("selftests/bpf: Skip the second half of get_branch_snapshot in vm")
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026000733.477714-1-songliubraving@fb.com
This commit is contained in:
Song Liu 2021-10-25 17:07:33 -07:00 committed by Andrii Nakryiko
parent e02daf4ce5
commit b4e8707276
1 changed files with 6 additions and 10 deletions
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16
tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
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@ -78,6 +78,12 @@ void serial_test_get_branch_snapshot(void)
struct get_branch_snapshot *skel = NULL;
int err;
/* Skip the test before we fix LBR snapshot for hypervisor. */
if (is_hypervisor()) {
test__skip();
return;
}
if (create_perf_events()) {
test__skip(); /* system doesn't support LBR */
goto cleanup;
@ -107,16 +113,6 @@ void serial_test_get_branch_snapshot(void)
goto cleanup;
}
if (is_hypervisor()) {
/* As of today, LBR in hypervisor cannot be stopped before
* too many entries are flushed. Skip the hit/waste test
* for now in hypervisor until we optimize the LBR in
* hypervisor.
*/
test__skip();
goto cleanup;
}
ASSERT_GT(skel->bss->test1_hits, 6, "find_looptest_in_lbr");
/* Given we stop LBR in software, we will waste a few entries.