Messages in this thread | | | Date | Mon, 18 Jun 2007 15:34:06 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [patch 05/26] Slab allocators: Cleanup zeroing allocations |
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On Mon, 18 Jun 2007, Pekka Enberg wrote:
> On 6/18/07, Pekka Enberg <penberg@cs.helsinki.fi> wrote: > > Hmm, did you check kernel text size before and after this change? > > Setting the __GFP_ZERO flag at every kzalloc call-site seems like a > > bad idea. > > Aah but most call-sites, of course, use constants such as GFP_KERNEL > only which should be folded nicely by the compiler. So this probably > doesn't have much impact. Would be nice if you'd check, though.
IA64
Before:
text data bss dec hex filename 10486815 4128471 3686044 18301330 1174192 vmlinux
After:
text data bss dec hex filename 10486335 4128439 3686044 18300818 1173f92 vmlinux
Saved ~500 bytes in text size.
x86_64:
Before:
text data bss dec hex filename 3823932 333840 220484 4378256 42ce90 vmlinux
After
text data bss dec hex filename 3823716 333840 220484 4378040 42cdb8 vmlinux
200 bytes saved.
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