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SubjectRe: [RFC PATCH v5 3/3] docs: scheduler: Add introduction to scheduler context-switch
* john mathew <john.mathew@unikie.com> [2020-05-14 12:26:37]:

> +
> +Context Switching
> +-----------------
> +
> +Context switching, the switching from a running task to another,
> +is done by the context_switch() function defined in kernel/sched.c.

context_switch is defined in kernel/sched/core.c

> +It is called by __schedule() when a new process has been selected to run.
> +The execution flow is as follows:
> +
> +
> + For a kernel task switching to a user task, switch_mm_irqs_off()
> + replaces the address space of prev kernel task with the next from the user
> + task. Same as for exiting process in this case, the context_switch()

Did you mean existing instead of exiting?

> + function saves the pointer to the memory descriptor used by prev in the
> + runqueue???s prev_mm field and resets prev task active address space.
> +
--
Thanks and Regards
Srikar Dronamraju

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