函数逻辑报告 |
Source Code:arch\x86\kernel\tsc.c |
Create Date:2022-07-27 08:46:19 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
首页 | 函数Tree |
注解内核,赢得工具 | 下载SCCT | English |
函数名称:alibrate cpu using pit, hpet, and ptimer methods. They are available* later in boot after acpi is initialized.
函数原型:static unsigned long pit_hpet_ptimer_calibrate_cpu(void)
返回类型:unsigned long
参数:无
712 | tsc_pit_min等于ULONG_MAX, tsc_ref_min等于ULONG_MAX |
714 | hpet等于is_hpet_enabled() |
744 | loopmin等于CAL_PIT_LOOPS |
755 | local_irq_save(flags) |
757 | tsc_pit_khz等于Try to calibrate the TSC against the Programmable* Interrupt Timer and return the frequency of the TSC* in kHz.* Return ULONG_MAX on failure to calibrate. |
759 | local_irq_restore(flags) |
762 | tsc_pit_min等于两数取小(tsc_pit_min, tsc_pit_khz) |
769 | 如果tsc1恒等于ULLONG_MAX或tsc2恒等于ULLONG_MAX则继续下一循环 |
778 | tsc_ref_min等于两数取小(tsc_ref_min, (unsignedlong)tsc2) |
781 | delta等于tsc_pit_min乘100 |
793 | 返回:tsc_ref_min |
802 | 如果i恒等于1且tsc_pit_min恒等于ULONG_MAX则 |
812 | 如果tsc_pit_min恒等于ULONG_MAX则 |
814 | 打印警告信息("Unable to calibrate against PIT\n") |
818 | 打印注释信息("No reference (HPET/PMTIMER) available\n") |
819 | 返回:0 |
823 | 如果tsc_ref_min恒等于ULONG_MAX则 |
824 | 打印警告信息("HPET/PMTIMER calibration failed\n") |
825 | 返回:0 |
832 | 返回:tsc_ref_min |
837 | 打印信息("Using PIT calibration value\n") |
838 | 返回:tsc_pit_min |
842 | 如果tsc_ref_min恒等于ULONG_MAX则 |
843 | 打印警告信息("HPET/PMTIMER calibration failed. Using PIT calibration.\n") |
844 | 返回:tsc_pit_min |
852 | 打印警告信息("PIT calibration deviates from %s: %lu %lu\n", hpet ? "HPET" : "PMTIMER", tsc_pit_min, tsc_ref_min) |
854 | 打印信息("Using PIT calibration value\n") |
855 | 返回:tsc_pit_min |
名称 | 描述 |
---|---|
native_calibrate_cpu | ative_calibrate_cpu - calibrate the cpu |
determine_cpu_tsc_frequencies |
源代码转换工具 开放的插件接口 | X |
---|---|
支持:c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现:逻辑报告 代码生成和批量转换代码 |