• Andrew Murray's avatar
    Documentation: preempt-locking: Use better example · 44280690
    Andrew Murray authored
    The existing wording implies that the use of spin_unlock whilst irqs are
    disabled might trigger a reschedule. However the preemptible() test in
    preempt_schedule will prevent a reschedule if irqs are disabled.
    Lets improve the clarity of this wording to change the example from
    spin_unlock to cond_resched() and cond_resched_lock() as these are
    functions that will trigger a reschedule if the preempt count is 0 without
    testing that irqs are disabled.
    Also remove the 'Last Updated' line as this is not up to date and better
    tracked via GIT.
    Signed-off-by: default avatarAndrew Murray <andrew.murray@arm.com>
    Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
preempt-locking.txt 5.58 KB