Re: [patch] generic-hardirqs.patch, 2.6.9-rc1-bk14
From: Christoph Hellwig
Date: Wed Sep 08 2004 - 08:27:01 EST
On Wed, Sep 08, 2004 at 03:05:52PM +0200, Ingo Molnar wrote:
> i disagree. It's the same as the VFS model: we have generic_block_bmap()
> which a filesystem might or might not make use of. It's still around
> even if no filesystem makes use of it but do we care? I'd prefer fixing
> our linking logic to get rid of unused functions than complicating code
> and the architecture with conditionals.
Completley different model. VFS supports lots of filesystem implementation
with one interface. IRQ code is a a single implementation for each
architecture.
> is there any architecture that cannot make use of kernel/hardirq.c _at
> all_?
s390 doesn't need it at all because it doesn't have the concept of hardirqs.
At least arm{,26}, m68k{,nommu} and parisc and sparc{,64} use extremly
different models for irq handling
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