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    SubjectRe: [PATCH] An RCU for SMP with a single CPU garbage collector
    On Mon, Mar 07, 2011 at 05:51:10PM -0500, Joe Korty wrote:
    > On Mon, Mar 07, 2011 at 04:16:13PM -0500, Joe Korty wrote:
    > > On Mon, Mar 07, 2011 at 04:01:57PM -0500, Paul E. McKenney wrote:
    > >> But I would really prefer leveraging the existing RCU implementations
    > >> to the extent possible. Are the user-dedicated CPUs able to invoke
    > >> system calls? If so, something like Frederic's approach should permit
    > >> the existing RCU implementations to operate normally. If not, what is
    > >> doing the RCU read-side critical sections on the dedicated CPUs?
    > >
    > > I thought about the system call approach but rejected it.
    > > Some (maybe many) customers needing dedicated CPUs will
    > > have apps that never make any system calls at all.
    > Hi Paul,
    > Thinking about it some more, the tap-into-syscall approach might
    > work in my implementation, in which case the tap-into-preempt-enable
    > code could go away.

    OK, please let me know how that goes!

    > Nice thing about RCU, the algorithms are infinitely mallable :)

    Just trying to keep the code size finite. ;-)

    Thanx, Paul

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