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    SubjectRe: [PATCH 2/3, RFC] watchdog dev BKL pushdown
    On Tuesday 20 May 2008, Christoph Hellwig wrote:
    > On Tue, May 20, 2008 at 01:14:23AM +0200, Arnd Bergmann wrote:
    > > The Big Kernel Lock has been pushed down from chardev_open
    > > to misc_open, this change moves it to the individual watchdog
    > > driver open functions.
    > >
    > > As before, the change was purely mechanical, most drivers
    > > should actually not need the BKL.
    > Actually I'd prefer to fix this for real.  This single open stuff aswell
    > as same set of ioctls are duplicated all over the watchdog drivers.  We'd
    > be much better off introducing a simple watchdog layer that handles this
    > plus proper locking and convert drivers over to it gradually.

    I fully agree, I thought the same thing when I did the patches. I remember
    that Wim had a git tree doing this, which is still active at;a=commitdiff;h=732c54027e6c866f98857c4a6d1c6c466459dcd5

    Unfortunately, it hasn't seen much activitity over the last two years, and
    the number of watchdog drivers seems to have exploded: I count 67 of them,
    including some outside of drivers/watchdog.

    Wim, was there anything preventing you from integrating the generic
    watchdog layer back then?

    Arnd <><
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