Re: [PATCH] __cacheline_aligned_in_smp?

David S. Miller (davem@redhat.com)
Wed, 15 Jan 2003 23:21:04 -0800 (PST)


From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 15 Jan 2003 19:02:20 +1100

> I want alignment on cache line boundary, and I don't want anything
> else in that cacheline.

A "read-mostly" section might be appropriate, then. Of course, you'd
have to split the structure, in that case, and it's not worth it if
there are only a few of these.

Have I finally got it through my thick skull now?

I think so. A read-mostly section would allow us to exploit this
more for other things.

BTW, the tcp_hashinfo struct exists only because the linker could
otherwise legally reorder data section members.
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