当core处于wfi/wfe时,amu计数器停止工作,这时计算出的性能等于其期望频率 参考cppc_cpufreq.c文件中的函数cppc_perf_from_fbctrs Reference linaro视频https://resources.linaro.org/en/resource/ddCcrnP8BEsCAasQrGiwrk linaro pdfhttps://static.linaro.org/connect/lvc21/presentations/lvc21-219.pdf kernel docht...
static struct cppc_cpudata **all_cpu_data; static bool boost_supported; struct cppc_workaround_oem_info { char oem_id[ACPI_OEM_ID_SIZE + 1]; char oem_table_id[ACPI_OEM_TABLE_ID_SIZE + 1]; u32 oem_revision; }; static...
@@ -291,105 +284,17 @@ static inline void cppc_freq_invariance_exit(void) } #endif /* CONFIG_ACPI_CPPC_CPUFREQ_FIE *//* Callback function used to retrieve the max frequency from DMI */ static void cppc_find_dmi_mhz(const struct dmi_header *dm, void *private) ...
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if (cppc_highest_perf_diff && cpumask_equal(&core_prior_mask, cpu_online_mask)) ERROR:OPEN_BRACE: that open brace { should be on the previous line #106: FILE: drivers/cpufreq/acpi-cpufreq.c:701: if (cppc_highest_perf_diff && cpumask_equal(&core_prior_mask, cpu_online_mask)) {...
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Similar to the ACPI CPUFreq and AMD/Intel P-State CPU frequency scaling driver and scaling governor benchmarks and power efficiency comparisons I routinely do on Phoronix, when recently having the Supermicro AmpereOne server in the lab with the 192-core
国外知名第三方Linux内核团队,只为打造精简快速的Linux内核体验!核心和进程调度、负载平衡、缓存、虚拟内存管理器和 CPUFreq 调节器针对繁重的工作负载进行了优化。 完整的多核块层运行队列请求,以实现高 I/O 吞吐量。 用于内核堆栈跟踪(调试信息)实现的ORC开卷器。 实
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