Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\tree_stall.h Create Date:2022-07-28 10:27:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Dump stacks of all tasks running on stalled CPUs. First try using* NMIs, but fall back to manual remote stack tracing on architectures* that don't support NMI-based stack dumps. The NMI-triggered stack

Proto:static void rcu_dump_cpu_stacks(void)

Type:void

Parameter:Nothing

251  raw_spin_lock_irqsave_rcu_node(rnp, flags)
252  Iterate over all possible CPUs in a leaf RCU node.(rnp, cpu)
253  If CPUs or groups that need to switch in & Bitmasks in an rcu_node cover the interval [grplo, grphi] of CPU IDs, and* are indexed relative to this interval rather than the global CPU ID space.* This generates the bit for a CPU in node-local masks.(rnp, cpu) Then If Not trigger_single_cpu_backtrace(cpu) Then
255  dump_cpu_task(cpu)
256  raw_spin_unlock_irqrestore_rcu_node(rnp, flags)