Messages in this thread |  | | Date | Sun, 24 Sep 2000 16:52:44 +0100 (BST) | From | Tigran Aivazian <> | Subject | Re: how interesting are data->bss patches? |
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Hi Peter,
The question you ask can be answered trivially - yes, it is definitely a good idea, please make such a patch. But what is far from being trivial is the magic reg. expression that is capable of catching all "globals initialized to 0 or NULL". It would be very useful if you showed everyone how you did it. I seriously thought of "simply" reading entire 2279844 lines of C code to catch all "data->bss" cases but if you can have grep(1) do that for me then that may save quite a lot of time :)
Regards, Tigran
On Sat, 23 Sep 2000, Peter Samuelson wrote:
> > Not that any of us who don't do embedded projects ought to care very > much, but I was curious. I grepped test9pre6 for globals initialized > to 0 or NULL and came up with 2495 lines, first iteration. At 4-byte > alignment this works out to something over 9k of .data that should be > .bss (not that anyone compiles very much of this in at a time). > > A lot of recent Linus patches seem to have this conversion in them, so > it seems someone *does* care about image size. (Presumably people > running the kernel in-place from flash, right?) Would anyone be > interested in patches to uninitialize these variables? I'd be willing > to proofread my grep output. > > (A related question: __initdata *does* have to be initialized, right?) > > Peter > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ >
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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