Re: [PATCH RFC 15/15] tests: Add postcopy preempt test

[Dr. David Alan Gilbert]

* Peter Xu (peterx@redhat.com) wrote:
> Signed-off-by: Peter Xu <peterx@redhat.com>

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

> ---
>  tests/qtest/migration-test.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
> index 7b42f6fd90..93ff43bb3f 100644
> --- a/tests/qtest/migration-test.c
> +++ b/tests/qtest/migration-test.c
> @@ -470,6 +470,7 @@ typedef struct {
>       */
>      bool hide_stderr;
>      bool use_shmem;
> +    bool postcopy_preempt;
>      /* only launch the target process */
>      bool only_target;
>      /* Use dirty ring if true; dirty logging otherwise */
> @@ -673,6 +674,11 @@ static int migrate_postcopy_prepare(QTestState 
> **from_ptr,
>      migrate_set_capability(to, "postcopy-ram", true);
>      migrate_set_capability(to, "postcopy-blocktime", true);
>  
> +    if (args->postcopy_preempt) {
> +        migrate_set_capability(from, "postcopy-preempt", true);
> +        migrate_set_capability(to, "postcopy-preempt", true);
> +    }
> +
>      /* We want to pick a speed slow enough that the test completes
>       * quickly, but that it doesn't complete precopy even on a slow
>       * machine, so also set the downtime.
> @@ -719,6 +725,20 @@ static void test_postcopy(void)
>      migrate_postcopy_complete(from, to);
>  }
>  
> +static void test_postcopy_preempt(void)
> +{
> +    MigrateStart *args = migrate_start_new();
> +    QTestState *from, *to;
> +
> +    args->postcopy_preempt = true;
> +
> +    if (migrate_postcopy_prepare(&from, &to, args)) {
> +        return;
> +    }
> +    migrate_postcopy_start(from, to);
> +    migrate_postcopy_complete(from, to);
> +}
> +
>  static void test_postcopy_recovery(void)
>  {
>      MigrateStart *args = migrate_start_new();
> @@ -1458,6 +1478,7 @@ int main(int argc, char **argv)
>      module_call_init(MODULE_INIT_QOM);
>  
>      qtest_add_func("/migration/postcopy/unix", test_postcopy);
> +    qtest_add_func("/migration/postcopy/preempt", test_postcopy_preempt);
>      qtest_add_func("/migration/postcopy/recovery", test_postcopy_recovery);
>      qtest_add_func("/migration/bad_dest", test_baddest);
>      qtest_add_func("/migration/precopy/unix", test_precopy_unix);
> -- 
> 2.32.0
> 
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK