From: Richael Zhuang <richael.zhuang@arm.com> To: dev@dpdk.org Cc: yux.jiang@intel.com, richael.zhuang@arm.com, stable@dpdk.org, David Hunt <david.hunt@intel.com> Subject: [dpdk-stable] [PATCH v4 2/2] test/power: round cpuinfo cur freq only when using CPPC cpufreq Date: Wed, 23 Jun 2021 11:55:41 +0800 Message-ID: <20210623035541.50543-3-richael.zhuang@arm.com> (raw) In-Reply-To: <20210623035541.50543-1-richael.zhuang@arm.com> On arm platform, the value in "/sys/.../cpuinfo_cur_freq" may not be exactly the same as what was set when using CPPC cpufreq driver. For other cpufreq driver, no need to round it currently, or else this check will fail with turbo enabled. For example, with acpi_cpufreq, cpuinfo_cur_freq can be 2401000 which is equal to freqs[0].It should not be rounded to 2400000. Fixes: 606a234c6d360 ("test/power: round CPU frequency to check") Cc: richael.zhuang@arm.com Cc: stable@dpdk.org Signed-off-by: Richael Zhuang <richael.zhuang@arm.com> --- app/test/test_power_cpufreq.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/app/test/test_power_cpufreq.c b/app/test/test_power_cpufreq.c index 8516df4ca..b8fc53925 100644 --- a/app/test/test_power_cpufreq.c +++ b/app/test/test_power_cpufreq.c @@ -55,7 +55,9 @@ check_cur_freq(unsigned int lcore_id, uint32_t idx, bool turbo) FILE *f; char fullpath[PATH_MAX]; char buf[BUFSIZ]; + enum power_management_env env; uint32_t cur_freq; + uint32_t freq_conv; int ret = -1; int i; @@ -80,15 +82,18 @@ check_cur_freq(unsigned int lcore_id, uint32_t idx, bool turbo) goto fail_all; cur_freq = strtoul(buf, NULL, TEST_POWER_CONVERT_TO_DECIMAL); - - /* 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 - */ - unsigned int freq_conv = 0; - freq_conv = (cur_freq + TEST_FREQ_ROUNDING_DELTA) - / TEST_ROUND_FREQ_TO_N_100000; - freq_conv = freq_conv * TEST_ROUND_FREQ_TO_N_100000; + freq_conv = cur_freq; + + env = rte_power_get_env(); + if (env == PM_ENV_CPPC_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 + */ + freq_conv = (cur_freq + TEST_FREQ_ROUNDING_DELTA) + / TEST_ROUND_FREQ_TO_N_100000; + freq_conv = freq_conv * TEST_ROUND_FREQ_TO_N_100000; + } if (turbo) ret = (freqs[idx] <= freq_conv ? 0 : -1); -- 2.20.1
next parent reply other threads:[~2021-06-23 3:56 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <20210512035709.37755-2-richael.zhuang@arm.com> [not found] ` <20210623035541.50543-1-richael.zhuang@arm.com> 2021-06-23 3:55 ` Richael Zhuang [this message] 2021-06-23 14:13 ` David Hunt
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