Function report |
Source Code:arch\x86\kernel\cpu\aperfmperf.c |
Create Date:2022-07-28 07:56:37 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:arch_freq_prepare_all
Proto:void arch_freq_prepare_all(void)
Type:void
Parameter:Nothing
99 | bool wait = false |
102 | If Not TSC clocks / usec, not used here Then Return |
105 | If Not boot_cpu_has(P-State hardware coordination feedback capability (APERF/MPERF MSRs) ) Then Return |
108 | for_each_online_cpu(cpu) |
109 | If Not housekeeping_cpu(cpu, HK_FLAG_MISC) Then Continue |
111 | If Not aperfmperf_snapshot_cpu(cpu, now, false) Then wait = true |
115 | If wait Then msleep(APERFMPERF_REFRESH_DELAY_MS) |
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