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On Thu, 2006-04-20 at 08:21 -0500, Serge E. Hallyn wrote: > Tony, do you have any performance measurements? Both for unconfined and > confined apps? Presumably unconfined processes should have 0 performance > hit, right? Preferably something that exercises open, mkdir, link... and friends intensively, not just the old WebStone data that I've seen posted before. But you don't really need the benchmarks - just look at the code, and think about the implications of allocating a page and calling d_path on every permission(9) call (on every component) plus from the separate hooks in the vfs_ helpers and further consider the impact of taking the dcache lock all the time there. And look at the iterators being used in aa_perm_dentry as well as the truly fun ones in aa_link. All because they are doing it from LSM hooks that were never intended to be used this way. -- Stephen Smalley National Security Agency - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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