Function report |
Source Code:arch\x86\kernel\apic\apic.c |
Create Date:2022-07-28 08:26:47 |
| Last Modify:2020-03-16 21:21:31 | Copyright©Brick |
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| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Temporary interrupt handler and polled calibration function.
Proto:static void __init lapic_cal_handler(struct clock_event_device *dev)
Type:void
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct clock_event_device * | dev |
| 729 | tsc = 0 |
| 730 | tapic = apic_read(APIC_TMCCT) |
| 731 | pm = acpi_pm_read_early() |
| 733 | If boot_cpu_has(Time Stamp Counter ) Then tsc = dtsc() - returns the current TSC without ordering constraints* rdtsc() returns the result of RDTSC as a 64-bit integer |
| 737 | Case ++ == 0 |
| 738 | lapic_cal_t1 = tapic |
| 739 | lapic_cal_tsc1 = tsc |
| 740 | lapic_cal_pm1 = pm |
| 741 | lapic_cal_j1 = jiffies |
| 742 | Break |
| 745 | lapic_cal_t2 = tapic |
| 746 | lapic_cal_tsc2 = tsc |
| 747 | If pm < lapic_cal_pm1 Then pm += Overrun value |
| 749 | lapic_cal_pm2 = pm |
| 750 | lapic_cal_j2 = jiffies |
| 751 | Break |
| Name | Describe |
|---|---|
| calibrate_APIC_clock |
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