Re: [dpdk-dev] [PATCH 3/3] test: add UT for power turbo feature

["Krakowiak, LukaszX" <lukaszx.krakowiak@intel.com>]

Hi, 

> On 07-Mar-19 1:59 PM, Lukasz Krakowiak wrote:
> > Add UT check_power_turbo.
> >
> > Signed-off-by: Lukasz Krakowiak <lukaszx.krakowiak@intel.com>
> > ---
> >   app/test/test_power_cpufreq.c | 72
> +++++++++++++++++++++++++++++++++++
> >   1 file changed, 72 insertions(+)
> >
> > diff --git a/app/test/test_power_cpufreq.c
> > b/app/test/test_power_cpufreq.c index d099f2f47..c75c9bf1c 100644
> > --- a/app/test/test_power_cpufreq.c
> > +++ b/app/test/test_power_cpufreq.c
> > @@ -366,6 +366,59 @@ check_power_freq_min(void)
> >   	return 0;
> >   }
> >
> > +/* Check rte_power_turbo() */
> > +static int
> > +check_power_turbo(void)
> > +{
> > +	int ret;
> > +
> > +	if (rte_power_turbo_status(TEST_POWER_LCORE_ID) == 0) {
> > +		printf("Turbo not available on lcore %u, skipping test\n",
> > +		TEST_POWER_LCORE_ID);
> 
> Misleading indentation, please add two tabs to the second line of
> printf() statement.
> 
> > +		return 0;
> > +	}
> > +
> > +	/* test with an invalid lcore id */
> > +	ret = rte_power_freq_enable_turbo(TEST_POWER_LCORE_INVALID);
> > +	if (ret >= 0) {
> > +		printf("Unexpectedly enable turbo successfully "
> > +				"on lcore %u\n",
> TEST_POWER_LCORE_INVALID);
> 
> Please don't break up strings to multiple lines.
> 
> > +		return -1;
> > +	}
> > +	ret = rte_power_freq_enable_turbo(TEST_POWER_LCORE_ID);
> > +	if (ret < 0) {
> > +		printf("Fail to enable turbo on lcore %u\n",
> > +
> 	TEST_POWER_LCORE_ID);
> 
> I wish there was a middle ground between no indentation and way too much
> indentation...
> 
> > +		return -1;
> > +	}
> > +
> > +	/* Check the current frequency */
> > +	ret = check_cur_freq(TEST_POWER_LCORE_ID, 0);
> > +	if (ret < 0)
> > +		return -1;
> > +
> > +	/* test with an invalid lcore id */
> > +	ret = rte_power_freq_disable_turbo(TEST_POWER_LCORE_INVALID);
> > +	if (ret >= 0) {
> > +		printf("Unexpectedly disable turbo successfully "
> > +				"on lcore %u\n",
> TEST_POWER_LCORE_INVALID);
> 
> Same as above, don't break up strings.
> 
> > +		return -1;
> > +	}
> > +	ret = rte_power_freq_disable_turbo(TEST_POWER_LCORE_ID);
> > +	if (ret < 0) {
> > +		printf("Fail to disable turbo on lcore %u\n",
> > +
> 	TEST_POWER_LCORE_ID);
> 
> Same as above, two tabs is enough indentation.
> 
> > +		return -1;
> > +	}
> > +
> > +	/* Check the current frequency */
> > +	ret = check_cur_freq(TEST_POWER_LCORE_ID, 1);
> > +	if (ret < 0)
> > +		return -1;
> > +
> > +	return 0;
> > +}
> > +
> >   static int
> >   test_power_cpufreq(void)
> >   {
> > @@ -427,6 +480,21 @@ test_power_cpufreq(void)
> >   				"been initialised\n");
> >   		goto fail_all;
> >   	}
> > +	if (rte_power_turbo_status == NULL) {
> > +		printf("rte_power_turbo_status should not be NULL,
> environment has not "
> > +				"been initialised\n");
> 
> Here and below:
> 
> I don't think saying *why* it should not be NULL - just saying that it shouldn't be
> NULL is enough. Maybe mention why it's supposed to be not NULL in comments
> here.
> 
> Also, i have a suspicion that the message is wrong - why would status be null if
> the environment was initialized? Presumably it's the other way around?

I think this is correctly: if env was initialized, pointer != NULL, otherwise env wasn't initialized.
Rest of all, you are right: coding style issues. Thanks.
> 
> > +		goto fail_all;
> > +	}
> > +	if (rte_power_freq_enable_turbo == NULL) {
> > +		printf("rte_power_freq_enable_turbo should not be NULL,
> environment has not "
> > +				"been initialised\n");
> > +		goto fail_all;
> > +	}
> > +	if (rte_power_freq_disable_turbo == NULL) {
> > +		printf("rte_power_freq_disable_turbo should not be NULL,
> environment has not "
> > +				"been initialised\n");
> > +		goto fail_all;
> > +	}
> >
> >   	ret = rte_power_exit(TEST_POWER_LCORE_ID);
> >   	if (ret < 0) {
> > @@ -502,6 +570,10 @@ test_power_cpufreq(void)
> >   	if (ret < 0)
> >   		goto fail_all;
> >
> > +	ret = check_power_turbo();
> > +	if (ret < 0)
> > +		goto fail_all;
> > +
> >   	ret = rte_power_exit(TEST_POWER_LCORE_ID);
> >   	if (ret < 0) {
> >   		printf("Cannot exit power management for lcore %u\n",
> >
> 
> 
> --
> Thanks,
> Anatoly