linux-kernel - Re: [PATCH v4 5/9] KVM: s390: selftest: memop: Move testlist into main

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Message-ID: <fbe79380237a2d6f4aca0c6b6909afd20b35a058.camel@linux.ibm.com>
Date:   Mon, 19 Dec 2022 17:13:20 +0100
From:   Janis Schoetterl-Glausch <scgl@...ux.ibm.com>
To:     Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Jonathan Corbet <corbet@....net>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-s390@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Thomas Huth <thuth@...hat.com>
Subject: Re: [PATCH v4 5/9] KVM: s390: selftest: memop: Move testlist into
 main

On Tue, 2022-12-13 at 17:54 +0100, Janis Schoetterl-Glausch wrote:
> This allows checking if the necessary requirements for a test case are
> met via an arbitrary expression. In particular, it is easy to check if
> certain bits are set in the memop extension capability.
> 
> Signed-off-by: Janis Schoetterl-Glausch <scgl@...ux.ibm.com>
> Reviewed-by: Thomas Huth <thuth@...hat.com>
> ---
>  tools/testing/selftests/kvm/s390x/memop.c | 132 +++++++++++-----------
>  1 file changed, 66 insertions(+), 66 deletions(-)
> 
> diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
> index 286185a59238..10f34c629cac 100644
> --- a/tools/testing/selftests/kvm/s390x/memop.c
> +++ b/tools/testing/selftests/kvm/s390x/memop.c
> @@ -690,87 +690,87 @@ static void test_errors(void)
>  	kvm_vm_free(t.kvm_vm);
>  }
>  
[...]
>  
>  int main(int argc, char *argv[])
>  {
>  	int extension_cap, idx;
>  
> +	setbuf(stdout, NULL);	/* Tell stdout not to buffer its content */
>  	TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_MEM_OP));
> +	extension_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP_EXTENSION);
>  
[...]
>  
>  	ksft_print_header();
> -
>  	ksft_set_plan(ARRAY_SIZE(testlist));
>  
> -	extension_cap = kvm_check_cap(KVM_CAP_S390_MEM_OP_EXTENSION);
>  	for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
> -		if (extension_cap >= testlist[idx].extension) {
> +		if (testlist[idx].requirements_met) {
>  			testlist[idx].test();
>  			ksft_test_result_pass("%s\n", testlist[idx].name);
>  		} else {
> -			ksft_test_result_skip("%s - extension level %d not supported\n",
> -					      testlist[idx].name,
> -					      testlist[idx].extension);
> +			ksft_test_result_skip("%s - requirements not met (kernel has extension cap %#x\n)",

                                                                                oops, should be )\n ofc ^

> +					      testlist[idx].name, extension_cap);
>  		}
>  	}
>