函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\tree_stall.h Create Date:2022-07-27 11:27:54
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称: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

函数原型:static void rcu_dump_cpu_stacks(void)

返回类型:void

参数:

251  raw_spin_lock_irqsave_rcu_node(rnp, flags)
252  Iterate over all possible CPUs in a leaf RCU node.(rnp, cpu)
253  如果CPUs or groups that need to switch in 按位与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)则如果非trigger_single_cpu_backtrace(cpu)则
255  dump_cpu_task(cpu)
256  raw_spin_unlock_irqrestore_rcu_node(rnp, flags)
调用者
名称描述
print_other_cpu_stall
print_cpu_stall