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From: "David S. Miller" <davem@redhat.com>
To: rusty@rustcorp.com.au
Cc: akpm@zip.com.au, torvalds@transmeta.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] __cacheline_aligned_in_smp?
Date: Wed, 15 Jan 2003 23:21:04 -0800 (PST)	[thread overview]
Message-ID: <20030115.232104.52604347.davem@redhat.com> (raw)
In-Reply-To: <20030115082444.0CFFA2C123@lists.samba.org>

   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.

  reply	other threads:[~2003-01-16  7:22 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-13  7:24 [PATCH] __cacheline_aligned_in_smp? Rusty Russell
2003-01-13  7:35 ` David S. Miller
2003-01-14  1:10   ` Rusty Russell
2003-01-14  6:32     ` David S. Miller
2003-01-15  8:02       ` Rusty Russell
2003-01-16  7:21         ` David S. Miller [this message]
2003-01-21 14:09       ` Bill Davidsen
2003-01-13  7:45 ` Jeff Garzik
2003-01-14  2:22   ` Rusty Russell
2003-01-13  9:41 ` David Gibson

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