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    SubjectRe: [PATCH 2/2] powerpc: Switch to generic WARN_ON()/BUG_ON()
    On Fri, Oct 12, 2007 at 11:23:39AM +1000, Paul Mackerras wrote:
    > Olof Johansson writes:
    > > Not using the ppc-specific WARN_ON/BUG_ON constructs actually saves about
    > > 4K text on a ppc64_defconfig. The main reason seems to be that prepping
    > > the arguments to the conditional trap instructions is more work than
    > > just doing a compare and branch.
    > It might be more instructions but it takes fewer cycles, I would
    > expect. Do you have the actual instruction sequences to compare?

    I really hope WARN_ON/BUG_ON aren't hotpaths on powerpc. ;-)

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