test/power: fix CPU frequency check for intel_pstate

[ upstream commit cf1e803 ]

For acpi_cpufreq and cppc_cpufreq, both cpuinfo_cur_freq and
scaling_cur_freq exist. For pstate, only scaling_cur_freq exists.
And value in scaling_cur_freq and cpuinfo_cur_freq may not be the
same. For acpi_cpufreq and cppc_cpufreq, we should check
cpuinfo_cur_freq but not scaling_cur_freq. So here change the
check sequence to make sure it works for all cpufreq drivers.
Besides, add rounding for pstate driver.

Fixes: ff6dfb8 ("test/power: fix CPU frequency check")

Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
Acked-by: David Hunt <david.hunt@intel.com>

app/test/test_power_cpufreq.c

@@ -62,13 +62,13 @@ check_cur_freq(unsigned int lcore_id, uint32_t idx, bool turbo)
 	int i;
 
 	if (snprintf(fullpath, sizeof(fullpath),
-		TEST_POWER_SYSFILE_SCALING_FREQ, lcore_id) < 0) {
+		TEST_POWER_SYSFILE_CPUINFO_FREQ, lcore_id) < 0) {
 		return 0;
 	}
 	f = fopen(fullpath, "r");
 	if (f == NULL) {
 		if (snprintf(fullpath, sizeof(fullpath),
-			TEST_POWER_SYSFILE_CPUINFO_FREQ, lcore_id) < 0) {
+			TEST_POWER_SYSFILE_SCALING_FREQ, lcore_id) < 0) {
 			return 0;
 		}
 		f = fopen(fullpath, "r");
@@ -85,7 +85,7 @@ check_cur_freq(unsigned int lcore_id, uint32_t idx, bool turbo)
 		freq_conv = cur_freq;
 
 		env = rte_power_get_env();
-		if (env == PM_ENV_CPPC_CPUFREQ) {
+		if (env == PM_ENV_CPPC_CPUFREQ || env == PM_ENV_PSTATE_CPUFREQ) {
 			/* convert the frequency to nearest 100000 value
 			 * Ex: if cur_freq=1396789 then freq_conv=1400000
 			 * Ex: if cur_freq=800030 then freq_conv=800000