Re: x86: 4kstacks default

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To: Andi Kleen <andi@...>

Cc: Jörn <joern@...>, Willy Tarreau <w@...>, Mark Lord <lkml@...>, Adrian Bunk <bunk@...>, Alan Cox <alan@...>, Shawn Bohrer <shawn.bohrer@...>, Ingo Molnar <mingo@...>, Andrew Morton <akpm@...>, Linux Kernel Mailing List <linux-kernel@...>, Thomas Gleixner <tglx@...>

Subject: Re: x86: 4kstacks default

Date: Sunday, April 20, 2008 - 2:50 pm

On Sun, 20 Apr 2008 20:19:30 +0200
Andi Kleen <andi@firstfloor.org> wrote:

quoted text> In theory if you e.g. convert a recursive algorithm
> to iterative you might save some cache foot print, but I don't
> think that really happens in kernel code.
> 

this is what Al did for the symlink recursion thing, and Jens did for the block layer...
so yes this conversion does happen for real.

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Messages in current thread:

Re: x86: 4kstacks default, Andrew Morton, (Fri Apr 18, 5:29 pm)

Re: x86: 4kstacks default, Ingo Molnar, (Sat Apr 19, 10:23 am)

Re: x86: 4kstacks default, Benjamin Herrenschmidt, (Wed Apr 23, 1:27 am)

Re: x86: 4kstacks default, David Chinner, (Wed Apr 23, 7:36 pm)

Re: x86: 4kstacks default, Benjamin Herrenschmidt, (Wed Apr 23, 8:56 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Wed Apr 23, 8:45 pm)

Re: x86: 4kstacks default, Christoph Hellwig, (Thu Apr 24, 5:52 am)

Re: x86: 4kstacks default, Chris Mason, (Thu Apr 24, 11:41 am)

Re: x86: 4kstacks default, Alexander van Heukelum, (Thu Apr 24, 2:30 pm)

Re: x86: 4kstacks default, Peter Zijlstra, (Thu Apr 24, 8:25 am)

Re: x86: 4kstacks default, Oliver Pinter, (Sat Apr 19, 10:35 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sat Apr 19, 11:19 am)

Re: x86: 4kstacks default, Oliver Pinter, (Sat Apr 19, 11:42 am)

Re: x86: 4kstacks default, Eric Sandeen, (Sat Apr 19, 9:56 pm)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 3:42 am)

Re: x86: 4kstacks default, Chris Wedgwood, (Sun Apr 20, 12:59 pm)

Re: x86: 4kstacks default, Eric Sandeen, (Sat Apr 19, 11:29 pm)

Re: x86: 4kstacks default, Ingo Molnar, (Mon Apr 21, 10:31 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 8:36 am)

Re: x86: 4kstacks default, Shawn Bohrer, (Sat Apr 19, 10:59 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 4:09 am)

Re: x86: 4kstacks default, Alan Cox, (Sun Apr 20, 4:06 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 4:51 am)

Re: x86: 4kstacks default, Alan Cox, (Sun Apr 20, 5:36 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 6:44 am)

Re: x86: 4kstacks default, Mark Lord, (Sun Apr 20, 9:22 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 8:27 am)

Re: x86: 4kstacks default, Daniel Hazelton, (Sun Apr 20, 11:44 am)

Re: x86: 4kstacks default, Romano Giannetti, (Tue Apr 22, 2:20 pm)

Re: x86: 4kstacks default, Denys Vlasenko, (Wed Apr 23, 1:03 am)

Re: x86: 4kstacks default, Daniel Hazelton, (Wed Apr 23, 1:21 am)

Re: x86: 4kstacks default, , (Wed Apr 23, 1:25 am)

Re: x86: 4kstacks default, Daniel Hazelton, (Wed Apr 23, 1:41 am)

Re: x86: 4kstacks default, Romano Giannetti, (Wed Apr 23, 3:46 am)

Re: x86: 4kstacks default, Stefan Richter, (Wed Apr 23, 7:24 am)

Re: x86: 4kstacks default, Romano Giannetti, (Wed Apr 23, 8:15 am)

Re: x86: 4kstacks default, Lennart Sorensen, (Wed Apr 23, 11:59 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 1:26 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Sun Apr 20, 2:48 pm)

Re: x86: 4kstacks default, Andrew Morton, (Sun Apr 20, 5:45 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 5:51 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 4:01 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Sun Apr 20, 6:33 pm)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 20, 11:06 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 7:16 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Mon Apr 21, 1:53 am)

Re: x86: 4kstacks default, Daniel Hazelton, (Sun Apr 20, 4:43 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 5:40 pm)

Re: x86: 4kstacks default, Daniel Hazelton, (Sun Apr 20, 9:45 pm)

Re: x86: 4kstacks default, Andi Kleen, (Mon Apr 21, 3:51 am)

Re: x86: 4kstacks default, Daniel Hazelton, (Mon Apr 21, 1:34 pm)

Re: x86: 4kstacks default, Bernd Eckenfels, (Sun Apr 20, 6:17 pm)

Re: x86: 4kstacks default, Avi Kivity, (Sun Apr 20, 7:48 pm)

Re: x86: 4kstacks default, Willy Tarreau, (Sun Apr 20, 8:47 am)

Re: x86: 4kstacks default, Mark Lord, (Sun Apr 20, 9:27 am)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 20, 10:09 am)

Re: x86: 4kstacks default, Willy Tarreau, (Sun Apr 20, 10:20 am)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 20, 10:40 am)

Re: x86: 4kstacks default, Willy Tarreau, (Sun Apr 20, 9:38 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 10:19 am)

Re: x86: 4kstacks default, Jörn, (Sun Apr 20, 12:41 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 1:19 pm)

Re: x86: 4kstacks default, Jörn, (Sun Apr 20, 1:43 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 2:19 pm)

Re: x86: 4kstacks default, Jörn, (Sun Apr 20, 4:35 pm)

Re: x86: 4kstacks default, Jörn, (Sun Apr 20, 4:32 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Sun Apr 20, 2:50 pm)

Re: x86: 4kstacks default, Andrew Morton, (Sun Apr 20, 5:50 pm)

Re: x86: 4kstacks default, Ingo Molnar, (Mon Apr 21, 10:29 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 5:55 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 4:09 pm)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 9:21 am)

Re: x86: 4kstacks default, Bill Davidsen, (Mon Apr 28, 2:38 pm)

Re: x86: 4kstacks default, Helge Hafting, (Wed Apr 23, 5:13 am)

Re: x86: 4kstacks default, Eric Sandeen, (Thu Apr 24, 11:46 am)

Re: x86: 4kstacks default, David Chinner, (Wed Apr 23, 7:29 pm)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 9:06 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 9:30 am)

Re: x86: 4kstacks default, Bill Davidsen, (Mon Apr 28, 1:56 pm)

Re: x86: 4kstacks default, Willy Tarreau, (Sun Apr 20, 9:34 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 10:04 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 8:32 am)

Re: x86: 4kstacks default, Alan Cox, (Sun Apr 20, 7:02 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 7:54 am)

Re: x86: 4kstacks default, Andi Kleen, (Sun Apr 20, 8:37 am)

Re: x86: 4kstacks default, Alan Cox, (Sun Apr 20, 7:37 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 8:18 am)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 20, 10:05 am)

Re: x86: 4kstacks default, Denys Vlasenko, (Mon Apr 21, 3:45 am)

Re: x86: 4kstacks default, Eric Sandeen, (Mon Apr 21, 9:29 am)

Re: x86: 4kstacks default, Denys Vlasenko, (Mon Apr 21, 3:51 pm)

Re: x86: 4kstacks default, David Chinner, (Mon Apr 21, 9:28 pm)

Re: x86: 4kstacks default, Jörn, (Sun Apr 27, 3:27 pm)

Re: x86: 4kstacks default, Denys Vlasenko, (Sun Apr 27, 7:02 pm)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 27, 7:08 pm)

Re: x86: 4kstacks default, Denys Vlasenko, (Sun Apr 27, 8:00 pm)

Re: x86: 4kstacks default, Denys Vlasenko, (Tue Apr 22, 8:48 am)

Re: x86: 4kstacks default, Adrian Bunk, (Tue Apr 22, 9:01 am)

Re: x86: 4kstacks default, Denys Vlasenko, (Tue Apr 22, 9:51 am)

[PATCH] xfs: do not pass size into kmem_free, it's unused, Denys Vlasenko, (Mon Apr 21, 10:33 pm)

Re: [PATCH] xfs: do not pass size into kmem_free, it's unused, David Chinner, (Tue Apr 22, 6:02 pm)

Re: [PATCH] xfs: do not pass size into kmem_free, it's unused, Eric Sandeen, (Mon Apr 21, 11:09 pm)

Re: [PATCH] xfs: do not pass size into kmem_free, it's unused, Eric Sandeen, (Mon Apr 21, 11:35 pm)

[PATCH] xfs: do not pass unused params to xfs_flush_pages, Denys Vlasenko, (Mon Apr 21, 11:03 pm)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, David Chinner, (Tue Apr 22, 6:07 pm)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, Eric Sandeen, (Mon Apr 21, 11:15 pm)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, Denys Vlasenko, (Tue Apr 22, 4:57 am)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, Eric Sandeen, (Tue Apr 22, 8:51 am)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, Jakub Jelinek, (Tue Apr 22, 5:56 am)

Re: [PATCH] xfs: do not pass unused params to xfs_flush_pages, Denys Vlasenko, (Tue Apr 22, 6:33 am)

[PATCH] xfs: use smaller int param in call to xfs_flush_pages, Denys Vlasenko, (Mon Apr 21, 11:14 pm)

Re: [PATCH] xfs: use smaller int param in call to xfs_flush_..., David Chinner, (Tue Apr 22, 6:08 pm)

[PATCH] xfs: remove unused parameter of xfs_qm_dqpurge, Denys Vlasenko, (Tue Apr 22, 5:42 am)

Re: [PATCH] xfs: remove unused parameter of xfs_qm_dqpurge, Christoph Hellwig, (Wed Apr 23, 4:18 am)

Re: [PATCH] xfs: remove unused parameter of xfs_qm_dqpurge, David Chinner, (Tue Apr 22, 6:11 pm)

[PATCH] xfs: remove unused parameter of xfs_iomap_write_allo..., Denys Vlasenko, (Tue Apr 22, 6:16 am)

Re: [PATCH] xfs: remove unused parameter of xfs_iomap_write_..., David Chinner, (Tue Apr 22, 6:33 pm)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., Denys Vlasenko, (Tue Apr 22, 7:20 am)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., David Chinner, (Tue Apr 22, 6:43 pm)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., Adrian Bunk, (Tue Apr 22, 10:28 am)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., Denys Vlasenko, (Tue Apr 22, 12:17 pm)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., Adrian Bunk, (Tue Apr 22, 1:21 pm)

Re: [PATCH] xfs: #define out unused parameters of xfs_bmap_a..., Eric Sandeen, (Tue Apr 22, 1:26 pm)

Re: [PATCH] xfs: #define out unused parameters , Denys Vlasenko, (Tue Apr 22, 4:46 pm)

Re: [PATCH] xfs: #define out unused parameters , Denys Vlasenko, (Tue Apr 22, 1:50 pm)

Re: [PATCH] xfs: #define out unused parameters of?xfs_bmap_a..., Adrian Bunk, (Tue Apr 22, 2:28 pm)

Re: [PATCH] xfs: #define out unused parameters of?xfs_bmap_a..., Denys Vlasenko, (Tue Apr 22, 3:32 pm)

Re: [PATCH] xfs: #define out unused parameters of?xfs_bmap_a..., Adrian Bunk, (Tue Apr 22, 7:53 pm)

[PATCH] xfs: #define out unused parameters for seven functio..., Denys Vlasenko, (Tue Apr 22, 7:51 am)

Re: [PATCH] xfs: #define out unused parameters for seven fun..., David Chinner, (Tue Apr 22, 6:47 pm)

[PATCH] xfs: remove unused params from functions in xfs_dir2..., Denys Vlasenko, (Tue Apr 22, 9:32 am)

[PATCH] xfs: remove unused params from functions in xfs/quot..., Denys Vlasenko, (Tue Apr 22, 9:40 am)

Re: [PATCH] xfs: remove unused params from functions in xfs/..., David Chinner, (Tue Apr 22, 7:08 pm)

[PATCH] xfs: expose no-op xfs_put_perag(), Denys Vlasenko, (Tue Apr 22, 9:46 am)

Re: [PATCH] xfs: expose no-op xfs_put_perag(), David Chinner, (Tue Apr 22, 7:16 pm)

Re: [PATCH] xfs: expose no-op xfs_put_perag(), Eric Sandeen, (Tue Apr 22, 10:08 am)

[PATCH] xfs: #define out unused parameters for seven functio..., Denys Vlasenko, (Tue Apr 22, 7:48 am)

Re: [PATCH] xfs: use smaller int param in call to xfs_flush_..., Eric Sandeen, (Mon Apr 21, 11:18 pm)

Re: [PATCH] xfs: use smaller int param in call to xfs_flush_..., David Chinner, (Tue Apr 22, 12:10 am)

Re: x86: 4kstacks default, Denys Vlasenko, (Mon Apr 21, 4:28 pm)

Re: x86: 4kstacks default, Andi Kleen, (Mon Apr 21, 5:55 am)

Re: x86: 4kstacks default, Arjan van de Ven, (Sun Apr 20, 11:41 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 12:03 pm)

Re: x86: 4kstacks default, Alexander E. Patrakov, (Sun Apr 20, 11:30 pm)

Re: x86: 4kstacks default, Helge Hafting, (Wed Apr 23, 4:57 am)

Re: x86: 4kstacks default, Adrian Bunk, (Sun Apr 20, 10:21 am)

Re: x86: 4kstacks default, Eric Sandeen, (Sun Apr 20, 10:56 am)

Re: x86: 4kstacks default, Arjan van de Ven, (Sat Apr 19, 2:00 pm)

Re: x86: 4kstacks default, Eric Sandeen, (Sat Apr 19, 10:36 pm)

Re: x86: 4kstacks default, David Chinner, (Sun Apr 20, 6:53 pm)

Re: x86: 4kstacks default, Arjan van de Ven, (Sun Apr 20, 2:11 am)

Re: x86: 4kstacks default, Ingo Molnar, (Sat Apr 19, 2:33 pm)

Re: x86: 4kstacks default, Stefan Richter, (Sat Apr 19, 3:10 pm)

Re: x86: 4kstacks default, Andrew Morton, (Sat Apr 19, 1:49 pm)

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