From: Rik van Riel <riel@redhat.com>
To: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrea Arcangeli <aarcange@redhat.com>,
Ingo Molnar <mingo@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Hugh Dickins <hughd@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 14/43] mm: mempolicy: Use _PAGE_NUMA to migrate pages
Date: Fri, 16 Nov 2012 11:08:51 -0500 [thread overview]
Message-ID: <50A66513.3010900@redhat.com> (raw)
In-Reply-To: <1353064973-26082-15-git-send-email-mgorman@suse.de>
On 11/16/2012 06:22 AM, Mel Gorman wrote:
> Note: Based on "mm/mpol: Use special PROT_NONE to migrate pages" but
> sufficiently different that the signed-off-bys were dropped
>
> Combine our previous _PAGE_NUMA, mpol_misplaced and migrate_misplaced_page()
> pieces into an effective migrate on fault scheme.
>
> Note that (on x86) we rely on PROT_NONE pages being !present and avoid
> the TLB flush from try_to_unmap(TTU_MIGRATION). This greatly improves the
> page-migration performance.
>
> Based-on-work-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
(this is getting easier, I must have reviewed this code 4x now)
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next prev parent reply other threads:[~2012-11-16 16:09 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-16 11:22 [RFC PATCH 00/43] Automatic NUMA Balancing V3 Mel Gorman
2012-11-16 11:22 ` [PATCH 01/43] mm: compaction: Move migration fail/success stats to migrate.c Mel Gorman
2012-11-16 11:22 ` [PATCH 02/43] mm: migrate: Add a tracepoint for migrate_pages Mel Gorman
2012-11-16 11:22 ` [PATCH 03/43] mm: compaction: Add scanned and isolated counters for compaction Mel Gorman
2012-11-16 11:22 ` [PATCH 04/43] mm: numa: define _PAGE_NUMA Mel Gorman
2012-11-16 11:22 ` [PATCH 05/43] mm: numa: pte_numa() and pmd_numa() Mel Gorman
2012-11-16 11:22 ` [PATCH 06/43] mm: numa: Make pte_numa() and pmd_numa() a generic implementation Mel Gorman
2012-11-16 14:09 ` Rik van Riel
2012-11-16 14:41 ` Mel Gorman
2012-11-16 15:32 ` Linus Torvalds
2012-11-16 16:08 ` Ingo Molnar
2012-11-16 16:56 ` Mel Gorman
2012-11-16 17:12 ` Ingo Molnar
2012-11-16 17:48 ` Mel Gorman
2012-11-16 18:04 ` Ingo Molnar
2012-11-16 18:55 ` Mel Gorman
2012-11-16 17:26 ` Rik van Riel
2012-11-16 17:37 ` Ingo Molnar
2012-11-16 18:44 ` Mel Gorman
2012-11-16 16:19 ` Mel Gorman
2012-11-16 11:22 ` [PATCH 07/43] mm: numa: Support NUMA hinting page faults from gup/gup_fast Mel Gorman
2012-11-16 14:09 ` Rik van Riel
2012-11-16 11:22 ` [PATCH 08/43] mm: numa: split_huge_page: transfer the NUMA type from the pmd to the pte Mel Gorman
2012-11-16 11:22 ` [PATCH 09/43] mm: numa: Create basic numa page hinting infrastructure Mel Gorman
2012-11-16 11:22 ` [PATCH 10/43] mm: mempolicy: Make MPOL_LOCAL a real policy Mel Gorman
2012-11-16 11:22 ` [PATCH 11/43] mm: mempolicy: Add MPOL_MF_NOOP Mel Gorman
2012-11-16 11:22 ` [PATCH 12/43] mm: mempolicy: Check for misplaced page Mel Gorman
2012-11-16 11:22 ` [PATCH 13/43] mm: migrate: Introduce migrate_misplaced_page() Mel Gorman
2012-11-19 19:44 ` [tip:numa/core] mm/migration: Improve migrate_misplaced_page() tip-bot for Mel Gorman
2012-11-16 11:22 ` [PATCH 14/43] mm: mempolicy: Use _PAGE_NUMA to migrate pages Mel Gorman
2012-11-16 16:08 ` Rik van Riel [this message]
2012-11-16 11:22 ` [PATCH 15/43] mm: mempolicy: Add MPOL_MF_LAZY Mel Gorman
2012-11-16 11:22 ` [PATCH 16/43] mm: mempolicy: Hide MPOL_NOOP and MPOL_MF_LAZY from userspace for now Mel Gorman
2012-11-16 16:22 ` Rik van Riel
2012-11-16 11:22 ` [PATCH 17/43] sched, mm, x86: Add the ARCH_SUPPORTS_NUMA_BALANCING flag Mel Gorman
2012-11-16 11:22 ` [PATCH 18/43] mm: numa: Add fault driven placement and migration Mel Gorman
2012-11-16 11:22 ` [PATCH 19/43] mm: numa: Avoid double faulting after migrating misplaced page Mel Gorman
2012-11-16 11:22 ` [PATCH 20/43] mm: sched: numa: Implement constant, per task Working Set Sampling (WSS) rate Mel Gorman
2012-11-16 11:22 ` [PATCH 21/43] sched, numa, mm: Count WS scanning against present PTEs, not virtual memory ranges Mel Gorman
2012-11-16 11:22 ` [PATCH 22/43] mm: sched: numa: Implement slow start for working set sampling Mel Gorman
2012-11-16 11:22 ` [PATCH 23/43] mm: numa: Add pte updates, hinting and migration stats Mel Gorman
2012-11-16 11:22 ` [PATCH 24/43] mm: numa: Migrate on reference policy Mel Gorman
2012-11-16 11:22 ` [PATCH 25/43] mm: numa: Migrate pages handled during a pmd_numa hinting fault Mel Gorman
2012-11-16 11:22 ` [PATCH 26/43] mm: numa: Only mark a PMD pmd_numa if the pages are all on the same node Mel Gorman
2012-11-16 11:22 ` [PATCH 27/43] mm: numa: Structures for Migrate On Fault per NUMA migration rate limiting Mel Gorman
2012-11-16 11:22 ` [PATCH 28/43] mm: numa: Rate limit the amount of memory that is migrated between nodes Mel Gorman
2012-11-16 11:22 ` [PATCH 29/43] mm: numa: Rate limit setting of pte_numa if node is saturated Mel Gorman
2012-11-16 11:22 ` [PATCH 30/43] sched: numa: Slowly increase the scanning period as NUMA faults are handled Mel Gorman
2012-11-16 11:22 ` [PATCH 31/43] mm: numa: Introduce last_nid to the page frame Mel Gorman
2012-11-16 11:22 ` [PATCH 32/43] mm: numa: Use a two-stage filter to restrict pages being migrated for unlikely task<->node relationships Mel Gorman
2012-11-16 11:22 ` [PATCH 33/43] x86: mm: only do a local tlb flush in ptep_set_access_flags() Mel Gorman
2012-11-16 11:22 ` [PATCH 34/43] x86: mm: drop TLB flush from ptep_set_access_flags Mel Gorman
2012-11-16 11:22 ` [PATCH 35/43] mm,generic: only flush the local TLB in ptep_set_access_flags Mel Gorman
2012-11-16 11:22 ` [PATCH 36/43] sched: numa: Introduce tsk_home_node() Mel Gorman
2012-11-16 11:22 ` [PATCH 37/43] sched: numa: Make find_busiest_queue() a method Mel Gorman
2012-11-16 11:22 ` [PATCH 38/43] sched: numa: Implement home-node awareness Mel Gorman
2012-11-16 11:22 ` [PATCH 39/43] sched: numa: Introduce per-mm and per-task structures Mel Gorman
2012-11-16 11:22 ` [PATCH 40/43] sched: numa: CPU follows memory Mel Gorman
2012-11-16 11:22 ` [PATCH 41/43] sched: numa: Rename mempolicy to HOME Mel Gorman
2012-11-16 11:22 ` [PATCH 42/43] sched: numa: Consider only one CPU per node for CPU-follows-memory Mel Gorman
2012-11-16 11:22 ` [PATCH 43/43] sched: numa: Increase and decrease a tasks scanning period based on task fault statistics Mel Gorman
2012-11-16 14:56 ` [RFC PATCH 00/43] Automatic NUMA Balancing V3 Mel Gorman
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