Documentation/scheduler/sched-ext.rst

6 programs - the BPF scheduler.
8 * sched_ext exports a full scheduling interface so that any scheduling
19   :kbd:`SysRq-S`.
24   `sched_ext_dump` tracepoint. The SysRq key sequence :kbd:`SysRq-D`
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54 in ``ops->flags``, all ``SCHED_NORMAL``, ``SCHED_BATCH``, ``SCHED_IDLE``, and
58 set in ``ops->flags``, only tasks with the ``SCHED_EXT`` policy are scheduled
62 Terminating the sched_ext scheduler program, triggering :kbd:`SysRq-S`, or
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68     # make -j16 -C tools/sched_ext
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127 .. code-block:: c
183             exit_type = ei->type;
196 ---------------
206 DSQ. A non-local DSQ is "consumed" to transfer a task to the consuming CPU's
215 ----------------
228    A side-effect of selecting a CPU is waking it up from idle. While a BPF
250    * Immediately dispatch the task to a custom DSQ by calling
261      be used - ``SCX_DSQ_LOCAL``, ``SCX_DSQ_LOCAL_ON | cpu``,
262      ``SCX_DSQ_GLOBAL`` or a custom DSQ. While ``scx_bpf_dispatch()``
268    * ``scx_bpf_consume()`` tranfers a task from the specified non-local DSQ
287 built-in DSQs are used, there is no need to implement ``ops.dispatch()`` as
293 ``SCX_DSQ_LOCAL`` and ``SCX_DSQ_GLOBAL`` do not support priority-queue
311     custom DSQ.
313   * ``scx_qmap[.bpf].c``: A multi-level FIFO scheduler supporting five