Kernel panic in the function select_ task_rq _fair() due to an invalid memory access Solution Verified – Updated 2020-01-09T07:42:00+00:00 – English, divide error: 0000 [#1] SMP last sysfs file: CPU 1 Modules linked in: Pid: 2, comm: kthreadd Not tainted 2.6.37-rc1-00027-gff8b16d #271 /ProLiant DL980 G7 RIP: 0010:[ ] [ ] select_ task_rq _fair+0x62a/0x7a0 Complete dmesg below; let me know if you need more info.
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RIP: 0010:[ ] [ ] select_ task_rq _fair+0x62a/0x7a0 Complete dmesg below; let me know if you need more info. Bjorn [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu, 12/15/2010 · RIP: 0010:[ ] [ ] select_ task_rq _fair+0x62a/0x7a0. Complete dmesg below; let me know if you need more info. Bjorn [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu, 7/9/2020 · fair:: .select_task_rq = select_ task_rq _fair fair::select_ task_rq _fair() // 1) Slow-path: find idle CPU with shallowest idle states find_idlest_cpu() // 2) Fast-path: find idle CPU fair:select_idle_sibling() // Wake up on idle core if available fair:select_idle_core() // Else wakeup on idle CPU if available fair:select_idle_cpu() fair:select …
When EAS is enabled, select_ task_rq _fair() calls find_energy_efficient_cpu() to do the placement decision. This function looks for the CPU with the highest spare capacity (CPU capacity – CPU utilization) in each performance domain since it is the one which will allow us to keep the frequency the lowest.
8/11/2017 · select_ task_rq _fair can then use the information to detect that it needs to widen the search space for task placement in order to avoid overloading the last-level cache domain’s CPUs. * * * The reason I am investigating this change is the following use case on ARM big.LITTLE (asymmetrical CPU capacity): 1 task per CPU, which
