Messages in this thread | | | From | Wang Qing <> | Subject | [V3 0/3] Fixed dump_backtrace() when task running on another cpu | Date | Tue, 14 Apr 2020 20:36:29 +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 for example when Task blocked in spinlock/interrupt/busy loop.
The task_running() should be renamed to task_running_on_rq() like the naming of task_running_on_cpu(), this is what it originally mean.
Add task_running() no rq required.
V2: - Add task_running_oncpu() v3: - Renamed task_running() to task_running_on_rq() - Renamed task_running_oncpu() to task_running()
Wang Qing (3): ARM64:fixed dump_backtrace() when task running on another cpu sched:add task_running() sched:rename task_running() and to task_running_on_rq
arch/arm64/kernel/traps.c | 7 +++++++ include/linux/sched.h | 10 ++++++++++ kernel/sched/core.c | 14 +++++++------- kernel/sched/deadline.c | 6 +++--- kernel/sched/fair.c | 2 +- kernel/sched/rt.c | 6 +++--- kernel/sched/sched.h | 2 +- 7 files changed, 32 insertions(+), 15 deletions(-)
-- 2.7.4
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