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1. use task->state to mark the state of task in taskqueue. 2. add delay work in case of hardware dead, then abort current task. 3. if wait timeout, set task->abort_requet for work thread to abort it. relative dump stack: <4>[84461.189906] __list_del_entry_valid+0x30/0x9c <4>[84461.190616] cc60 00000000 00000000 00000000 00000048 00014b0e 00000550 00000598 00000620 <4>[84461.191018] mpp_task_finish+0x108/0x15c <4>[84461.191735] <4>[84461.191735] X29: 0xffffff800e0cba50: <4>[84461.192100] vdpu_isr+0x60/0xbc <4>[84461.192536] ba50 00000000 ffffff80 f153c4c0 ffffffc0 08109fe0 ffffff80 0e0cba68 ffffff80 <4>[84461.192828] mpp_dev_isr_sched+0x4c/0x94 <4>[84461.193545] ba70 0e0cba68 ffffff80 b8a42e00 04d029b0 f0401000 ffffffc0 00000000 00000000 Change-Id: I2391a97fca4b6a7fddbf88a05cedf6f2fe564be0 Signed-off-by: Ding Wei <leo.ding@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.