Function report |
Source Code:kernel\watchdog_hld.c |
Create Date:2022-07-28 11:45:44 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Callback function for perf event subsystem
Proto:static void watchdog_overflow_callback(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct perf_event * | event | |
struct perf_sample_data * | data | |
struct pt_regs * | regs |
115 | interrupts = 0 |
118 | __this_cpu_write(watchdog_nmi_touch, false) |
119 | Return |
122 | If Not watchdog_check_timestamp() Then Return |
131 | If is_hardlockup() Then |
132 | this_cpu = smp_processor_id() |
135 | If (Operations for contexts that are safe from preemption/interrupts. These* operations verify that preemption is disabled.(hard_watchdog_warn) == true) Then Return |
144 | Else dump_stack() |
158 | __this_cpu_write(hard_watchdog_warn, true) |
159 | Return |
162 | __this_cpu_write(hard_watchdog_warn, false) |
163 | Return |
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