On Tue, 19 Jun 2007, Matt Mackall wrote: > > I worry a bit about adding another branch checking __GFP_ZERO in such > > a hot path for SLAB/SLUB.
On Tue, 19 Jun 2007, Christoph Lameter wrote: > Its checking the gfpflags variable on the stack. In a recently touched > cachline. The variable could be in a register too but it's the _branch instruction_ that is bit worrisome especially for embedded devices (think slob). I haven't measured this, so consider this as pure speculation and hand-waving from my part. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
