Re: kernel timer races

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri May 26 2000 - 12:11:06 EDT

  • Next message: James Wilson: "VM questions"

    > Sure. But del_timer() + wait_on_timers() + dont-re-add-flag ==
    > del_timer_sync()?

    Yep - just remember to check mod_timer too for the flag

    > The problem is, in many of the above cases I simply replaced del_timer
    > with del_timer_async, so the races which some of the above files have
    > will remain in place. But the potential problems are identified and I
    > can now bug people :).

    Where you did this and there were problems did you add a #warning or comment ?

    > 1: Give del_timer synchronous semantics and patch the
    > above 25 files or

    #1 is ok providing it has good debugging and barfs loudly on a potential
    deadlock

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