Messages in this thread | | | From | Wang Qing <> | Subject | [PATCH 0/2] fixed dump_backtrace() when task running on another cpu | Date | Mon, 13 Apr 2020 20:04:22 +0800 |
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We cannot get FP and PC when the task is running on another CPU, task->thread.cpu_context is the last time the task was switched out, it's better to give a reminder than to provide wrong information.
We have no interface whether the task is running, so we need to add an interface and distinguish CONFIG_SMP.
Wang Qing (2): [V2 1/2]sched:add task_running_oncpu [V2 2/2]ARM64:fixed dump_backtrace() when task running on another cpu
arch/arm64/kernel/traps.c | 7 +++++++ include/linux/sched.h | 10 ++++++++++ 2 files changed, 17 insertions(+)
-- 2.7.4
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