[kvm-unit-tests,v2,2/7] s390x: smp: Only use smp_cpu_setup once
diff mbox series

Message ID 20200116120513.2244-3-frankja@linux.ibm.com
State New
Headers show
Series
  • s390x: smp: Improve smp code and reset checks
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Commit Message

Janosch Frank Jan. 16, 2020, 12:05 p.m. UTC
Let's stop and start instead of using setup to run a function on a
cpu.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
 s390x/smp.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

Comments

David Hildenbrand Jan. 16, 2020, 12:18 p.m. UTC | #1
On 16.01.20 13:05, Janosch Frank wrote:
> Let's stop and start instead of using setup to run a function on a
> cpu.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> ---
>  s390x/smp.c | 20 +++++++++++++-------
>  1 file changed, 13 insertions(+), 7 deletions(-)
> 
> diff --git a/s390x/smp.c b/s390x/smp.c
> index 02204fd..d430638 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c
> @@ -47,7 +47,7 @@ static void test_start(void)
>  	psw.mask = extract_psw_mask();
>  	psw.addr = (unsigned long)test_func;
>  
> -	smp_cpu_setup(1, psw);
> +	smp_cpu_start(1, psw);
>  	wait_for_flag();
>  	report(1, "start");
>  }
> @@ -132,9 +132,8 @@ static void test_ecall(void)
>  
>  	report_prefix_push("ecall");
>  	testflag = 0;
> -	smp_cpu_destroy(1);
>  
> -	smp_cpu_setup(1, psw);
> +	smp_cpu_start(1, psw);
>  	wait_for_flag();
>  	testflag = 0;
>  	sigp(1, SIGP_EXTERNAL_CALL, 0, NULL);
> @@ -167,9 +166,8 @@ static void test_emcall(void)
>  
>  	report_prefix_push("emcall");
>  	testflag = 0;
> -	smp_cpu_destroy(1);
>  
> -	smp_cpu_setup(1, psw);
> +	smp_cpu_start(1, psw);
>  	wait_for_flag();
>  	testflag = 0;
>  	sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL);
> @@ -187,7 +185,7 @@ static void test_reset_initial(void)
>  	psw.addr = (unsigned long)test_func;
>  
>  	report_prefix_push("reset initial");
> -	smp_cpu_setup(1, psw);
> +	smp_cpu_start(1, psw);
>  
>  	sigp_retry(1, SIGP_INITIAL_CPU_RESET, 0, NULL);
>  	sigp(1, SIGP_STORE_STATUS_AT_ADDRESS, (uintptr_t)status, NULL);
> @@ -218,7 +216,7 @@ static void test_reset(void)
>  	psw.addr = (unsigned long)test_func;
>  
>  	report_prefix_push("cpu reset");
> -	smp_cpu_setup(1, psw);
> +	smp_cpu_start(1, psw);
>  
>  	sigp_retry(1, SIGP_CPU_RESET, 0, NULL);
>  	report(smp_cpu_stopped(1), "cpu stopped");
> @@ -227,6 +225,7 @@ static void test_reset(void)
>  
>  int main(void)
>  {
> +	struct psw psw;
>  	report_prefix_push("smp");
>  
>  	if (smp_query_num_cpus() == 1) {
> @@ -234,6 +233,12 @@ int main(void)
>  		goto done;
>  	}
>  
> +	/* Setting up the cpu to give it a stack and lowcore */
> +	psw.mask = extract_psw_mask();
> +	psw.addr = (unsigned long)cpu_loop;
> +	smp_cpu_setup(1, psw);
> +	smp_cpu_stop(1);
> +
>  	test_start();
>  	test_stop();
>  	test_stop_store_status();
> @@ -242,6 +247,7 @@ int main(void)
>  	test_emcall();
>  	test_reset();
>  	test_reset_initial();
> +	smp_cpu_destroy(1);
>  
>  done:
>  	report_prefix_pop();
> 

Acked-by: David Hildenbrand <david@redhat.com>
Janosch Frank Jan. 16, 2020, 1:01 p.m. UTC | #2
On 1/16/20 1:18 PM, David Hildenbrand wrote:
> On 16.01.20 13:05, Janosch Frank wrote:
>> Let's stop and start instead of using setup to run a function on a
>> cpu.
>>
>> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
>> Reviewed-by: Thomas Huth <thuth@redhat.com>
>> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
>> ---
>>  s390x/smp.c | 20 +++++++++++++-------
>>  1 file changed, 13 insertions(+), 7 deletions(-)
>>
>> diff --git a/s390x/smp.c b/s390x/smp.c
>> index 02204fd..d430638 100644
>> --- a/s390x/smp.c
>> +++ b/s390x/smp.c
>> @@ -47,7 +47,7 @@ static void test_start(void)
>>  	psw.mask = extract_psw_mask();
>>  	psw.addr = (unsigned long)test_func;
>>  
>> -	smp_cpu_setup(1, psw);
>> +	smp_cpu_start(1, psw);
>>  	wait_for_flag();
>>  	report(1, "start");
>>  }
>> @@ -132,9 +132,8 @@ static void test_ecall(void)
>>  
>>  	report_prefix_push("ecall");
>>  	testflag = 0;
>> -	smp_cpu_destroy(1);
>>  
>> -	smp_cpu_setup(1, psw);
>> +	smp_cpu_start(1, psw);
>>  	wait_for_flag();
>>  	testflag = 0;
>>  	sigp(1, SIGP_EXTERNAL_CALL, 0, NULL);
>> @@ -167,9 +166,8 @@ static void test_emcall(void)
>>  
>>  	report_prefix_push("emcall");
>>  	testflag = 0;
>> -	smp_cpu_destroy(1);
>>  
>> -	smp_cpu_setup(1, psw);
>> +	smp_cpu_start(1, psw);
>>  	wait_for_flag();
>>  	testflag = 0;
>>  	sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL);
>> @@ -187,7 +185,7 @@ static void test_reset_initial(void)
>>  	psw.addr = (unsigned long)test_func;
>>  
>>  	report_prefix_push("reset initial");
>> -	smp_cpu_setup(1, psw);
>> +	smp_cpu_start(1, psw);
>>  
>>  	sigp_retry(1, SIGP_INITIAL_CPU_RESET, 0, NULL);
>>  	sigp(1, SIGP_STORE_STATUS_AT_ADDRESS, (uintptr_t)status, NULL);
>> @@ -218,7 +216,7 @@ static void test_reset(void)
>>  	psw.addr = (unsigned long)test_func;
>>  
>>  	report_prefix_push("cpu reset");
>> -	smp_cpu_setup(1, psw);
>> +	smp_cpu_start(1, psw);
>>  
>>  	sigp_retry(1, SIGP_CPU_RESET, 0, NULL);
>>  	report(smp_cpu_stopped(1), "cpu stopped");
>> @@ -227,6 +225,7 @@ static void test_reset(void)
>>  
>>  int main(void)
>>  {
>> +	struct psw psw;
>>  	report_prefix_push("smp");
>>  
>>  	if (smp_query_num_cpus() == 1) {
>> @@ -234,6 +233,12 @@ int main(void)
>>  		goto done;
>>  	}
>>  
>> +	/* Setting up the cpu to give it a stack and lowcore */
>> +	psw.mask = extract_psw_mask();
>> +	psw.addr = (unsigned long)cpu_loop;
>> +	smp_cpu_setup(1, psw);
>> +	smp_cpu_stop(1);
>> +
>>  	test_start();
>>  	test_stop();
>>  	test_stop_store_status();
>> @@ -242,6 +247,7 @@ int main(void)
>>  	test_emcall();
>>  	test_reset();
>>  	test_reset_initial();
>> +	smp_cpu_destroy(1);
>>  
>>  done:
>>  	report_prefix_pop();
>>
> 
> Acked-by: David Hildenbrand <david@redhat.com>
Thanks!

Patch
diff mbox series

diff --git a/s390x/smp.c b/s390x/smp.c
index 02204fd..d430638 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -47,7 +47,7 @@  static void test_start(void)
 	psw.mask = extract_psw_mask();
 	psw.addr = (unsigned long)test_func;
 
-	smp_cpu_setup(1, psw);
+	smp_cpu_start(1, psw);
 	wait_for_flag();
 	report(1, "start");
 }
@@ -132,9 +132,8 @@  static void test_ecall(void)
 
 	report_prefix_push("ecall");
 	testflag = 0;
-	smp_cpu_destroy(1);
 
-	smp_cpu_setup(1, psw);
+	smp_cpu_start(1, psw);
 	wait_for_flag();
 	testflag = 0;
 	sigp(1, SIGP_EXTERNAL_CALL, 0, NULL);
@@ -167,9 +166,8 @@  static void test_emcall(void)
 
 	report_prefix_push("emcall");
 	testflag = 0;
-	smp_cpu_destroy(1);
 
-	smp_cpu_setup(1, psw);
+	smp_cpu_start(1, psw);
 	wait_for_flag();
 	testflag = 0;
 	sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL);
@@ -187,7 +185,7 @@  static void test_reset_initial(void)
 	psw.addr = (unsigned long)test_func;
 
 	report_prefix_push("reset initial");
-	smp_cpu_setup(1, psw);
+	smp_cpu_start(1, psw);
 
 	sigp_retry(1, SIGP_INITIAL_CPU_RESET, 0, NULL);
 	sigp(1, SIGP_STORE_STATUS_AT_ADDRESS, (uintptr_t)status, NULL);
@@ -218,7 +216,7 @@  static void test_reset(void)
 	psw.addr = (unsigned long)test_func;
 
 	report_prefix_push("cpu reset");
-	smp_cpu_setup(1, psw);
+	smp_cpu_start(1, psw);
 
 	sigp_retry(1, SIGP_CPU_RESET, 0, NULL);
 	report(smp_cpu_stopped(1), "cpu stopped");
@@ -227,6 +225,7 @@  static void test_reset(void)
 
 int main(void)
 {
+	struct psw psw;
 	report_prefix_push("smp");
 
 	if (smp_query_num_cpus() == 1) {
@@ -234,6 +233,12 @@  int main(void)
 		goto done;
 	}
 
+	/* Setting up the cpu to give it a stack and lowcore */
+	psw.mask = extract_psw_mask();
+	psw.addr = (unsigned long)cpu_loop;
+	smp_cpu_setup(1, psw);
+	smp_cpu_stop(1);
+
 	test_start();
 	test_stop();
 	test_stop_store_status();
@@ -242,6 +247,7 @@  int main(void)
 	test_emcall();
 	test_reset();
 	test_reset_initial();
+	smp_cpu_destroy(1);
 
 done:
 	report_prefix_pop();