Home » Mailing list archives » linux-kernel » 2010 » October » 27

Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
[view in full thread]
From: Tejun Heo
Subject: Re: [PATCH] x86-32: Allocate irq stacks seperate from percpu area
Date: Wednesday, October 27, 2010 - 7:39 am

On 10/27/2010 04:24 PM, Eric Dumazet wrote:

Weird, then why did the percpu code interleaved cpus 16-31 between
node 0 and 1?  Percpu layout code tries pretty hard to group cpus into
percpu units according to NUMA mapping but if the nodes are too
unbalanced that doing so would result in too big waste of address
space, it gives up.  I _think_ that's what happened with the weird
24:8 NUMA split on 32bit.  So, the interesting part is cpus 16-31 not
0-15.

-- 
tejun
--
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
Messages in current thread:
[PATCH] MN10300: Fix the PERCPU() alignment to allow for w ..., David Howells, (Mon Oct 25, 3:41 pm)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., Tejun Heo, (Tue Oct 26, 2:10 am)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., David Howells, (Tue Oct 26, 3:22 am)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., Tejun Heo, (Tue Oct 26, 5:14 am)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., Tejun Heo, (Tue Oct 26, 5:27 am)
[PATCH] x86, percpu: revert commit fe8e0c25, Tejun Heo, (Tue Oct 26, 5:45 am)
Re: [PATCH] x86, percpu: revert commit fe8e0c25, Ingo Molnar, (Tue Oct 26, 6:25 am)
Re: [PATCH] x86, percpu: revert commit fe8e0c25, Tejun Heo, (Tue Oct 26, 6:34 am)
Re: [PATCH] x86, percpu: revert commit fe8e0c25, Brian Gerst, (Tue Oct 26, 6:49 am)
[RFC PATCH] percpu: always align percpu output section to ..., Tejun Heo, (Tue Oct 26, 7:06 am)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., David Howells, (Tue Oct 26, 7:50 am)
Re: [PATCH] MN10300: Fix the PERCPU() alignment to allow f ..., Tejun Heo, (Tue Oct 26, 7:56 am)
Re: [PATCH] x86, percpu: revert commit fe8e0c25, Linus Torvalds, (Tue Oct 26, 8:08 am)
[PATCH] x86-32: Allocate irq stacks seperate from percpu area, Brian Gerst, (Tue Oct 26, 10:43 pm)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Tue Oct 26, 11:07 pm)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Peter Zijlstra, (Wed Oct 27, 2:57 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 6:33 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 6:42 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 6:57 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 7:00 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 7:24 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 7:39 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 7:39 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 7:43 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Linus Torvalds, (Wed Oct 27, 8:19 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 8:21 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Ingo Molnar, (Wed Oct 27, 8:30 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Ingo Molnar, (Wed Oct 27, 8:33 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 8:35 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Wed Oct 27, 8:40 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Ingo Molnar, (Wed Oct 27, 8:43 am)
[tip:x86/urgent] x86-32: Allocate irq stacks seperate from ..., tip-bot for Brian Gerst, (Wed Oct 27, 9:03 am)
[tip:x86/urgent] percpu: Remove the multi-page alignment f ..., tip-bot for Ingo Molnar, (Wed Oct 27, 9:04 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 9:07 am)
[PATCH] numa: fix slab_node(MPOL_BIND), Eric Dumazet, (Wed Oct 27, 10:33 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Wed Oct 27, 1:55 pm)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Tejun Heo, (Thu Oct 28, 5:01 am)
Re: [PATCH] x86-32: Allocate irq stacks seperate from perc ..., Eric Dumazet, (Thu Oct 28, 5:30 am)
[PATCH] x86-32: NUMA irq stacks allocations, Eric Dumazet, (Thu Oct 28, 7:40 am)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Linus Torvalds, (Thu Oct 28, 8:59 am)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Eric Dumazet, (Thu Oct 28, 9:27 am)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Mel Gorman, (Thu Oct 28, 9:45 am)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Christoph Lameter, (Thu Oct 28, 9:55 am)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Andrew Morton, (Thu Oct 28, 2:07 pm)
[tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware all ..., tip-bot for Eric Dumazet, (Thu Oct 28, 11:43 pm)
Re: [PATCH] numa: fix slab_node(MPOL_BIND), Christoph Lameter, (Fri Oct 29, 7:55 am)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Peter Zijlstra, (Fri Oct 29, 11:32 am)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Cyrill Gorcunov, (Fri Oct 29, 1:09 pm)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Cyrill Gorcunov, (Fri Oct 29, 1:28 pm)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Eric Dumazet, (Fri Oct 29, 1:53 pm)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Eric Dumazet, (Fri Oct 29, 1:58 pm)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Cyrill Gorcunov, (Fri Oct 29, 1:59 pm)
Re: [tip:x86/urgent] x86-32: Restore irq stacks NUMA-aware ..., Cyrill Gorcunov, (Fri Oct 29, 2:21 pm)