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    SubjectRe: 2.6.24-rc6-mm1

    * Herbert Xu <herbert@gondor.apana.org.au> wrote:

    > > Ingo, it's not good that we have cond_resched() definitions
    > > conditionally duplicated in kernel.h - that's increasing the risk of
    > > bugs like this one.
    >
    > Actually, why do we even have cond_resched when real preemption is on?
    > It seems to be a waste of space and time.

    due to the BKL. cond_resched() in BKL code breaks up BKL latencies.

    i dont mind not doing that though - we should increase the pain for BKL
    users, so that subsystems finally get rid of it altogether.
    lock_kernel() use within the kernel is still rampant - there are still
    more than 400 callsites to lock_kernel().

    Ingo


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