Messages in this thread | | | Date | Tue, 25 Sep 2007 14:21:29 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH] Uninline kcalloc() |
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On Mon, 24 Sep 2007, Valdis.Kletnieks@vt.edu wrote:
> I think I looked at that, and it wasn't as easy as it looked, because there > were ugly corner cases for what __builtin_return_address() returned depending > on exactly what did or didn't get inlined. Basically, it's ugly stuff - if you > try to use __builtin_retur_address inside kcalloc to pass to __kmalloc, and > then kcalloc gets inlined, you end up passing not the routine you wanted (the > caller of kcalloc), but the *parent* of that...
Note that this can be done in a clean way in SLUB using slab_alloc() which takes a address parameter as obtained from __builtin_return_address().
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