From: Mel Gorman <mgorman@techsingularity.net>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 28/28] mm, page_alloc: Defer debugging checks of pages allocated from the PCP
Date: Wed, 27 Apr 2016 16:31:21 +0100 [thread overview]
Message-ID: <20160427153121.GK2858@techsingularity.net> (raw)
In-Reply-To: <5720C753.2000804@suse.cz>
On Wed, Apr 27, 2016 at 04:06:11PM +0200, Vlastimil Babka wrote:
> From afdefd87f2d8d07cba4bd2a2f3531dc8bb0b7a19 Mon Sep 17 00:00:00 2001
> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Wed, 27 Apr 2016 15:47:29 +0200
> Subject: [PATCH] mm, page_alloc: uninline the bad page part of
> check_new_page()
>
> Bad pages should be rare so the code handling them doesn't need to be inline
> for performance reasons. Put it to separate function which returns void.
> This also assumes that the initial page_expected_state() result will match the
> result of the thorough check, i.e. the page doesn't become "good" in the
> meanwhile. This matches the same expectations already in place in
> free_pages_check().
>
> !DEBUG_VM bloat-o-meter:
>
> add/remove: 1/0 grow/shrink: 0/1 up/down: 134/-274 (-140)
> function old new delta
> check_new_page_bad - 134 +134
> get_page_from_freelist 3468 3194 -274
>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Andrew, if you pick up v2 of of the follow-up series then can you also
add this patch on top if it's convenient please?
--
Mel Gorman
SUSE Labs
WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@techsingularity.net>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 28/28] mm, page_alloc: Defer debugging checks of pages allocated from the PCP
Date: Wed, 27 Apr 2016 16:31:21 +0100 [thread overview]
Message-ID: <20160427153121.GK2858@techsingularity.net> (raw)
In-Reply-To: <5720C753.2000804@suse.cz>
On Wed, Apr 27, 2016 at 04:06:11PM +0200, Vlastimil Babka wrote:
> From afdefd87f2d8d07cba4bd2a2f3531dc8bb0b7a19 Mon Sep 17 00:00:00 2001
> From: Vlastimil Babka <vbabka@suse.cz>
> Date: Wed, 27 Apr 2016 15:47:29 +0200
> Subject: [PATCH] mm, page_alloc: uninline the bad page part of
> check_new_page()
>
> Bad pages should be rare so the code handling them doesn't need to be inline
> for performance reasons. Put it to separate function which returns void.
> This also assumes that the initial page_expected_state() result will match the
> result of the thorough check, i.e. the page doesn't become "good" in the
> meanwhile. This matches the same expectations already in place in
> free_pages_check().
>
> !DEBUG_VM bloat-o-meter:
>
> add/remove: 1/0 grow/shrink: 0/1 up/down: 134/-274 (-140)
> function old new delta
> check_new_page_bad - 134 +134
> get_page_from_freelist 3468 3194 -274
>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Andrew, if you pick up v2 of of the follow-up series then can you also
add this patch on top if it's convenient please?
--
Mel Gorman
SUSE Labs
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-04-27 15:31 UTC|newest]
Thread overview: 160+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-15 8:58 [PATCH 00/28] Optimise page alloc/free fast paths v3 Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-15 8:58 ` [PATCH 01/28] mm, page_alloc: Only check PageCompound for high-order pages Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-25 9:33 ` Vlastimil Babka
2016-04-25 9:33 ` Vlastimil Babka
2016-04-26 10:33 ` Mel Gorman
2016-04-26 10:33 ` Mel Gorman
2016-04-26 11:20 ` Vlastimil Babka
2016-04-26 11:20 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 02/28] mm, page_alloc: Use new PageAnonHead helper in the free page fast path Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-25 9:56 ` Vlastimil Babka
2016-04-25 9:56 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 03/28] mm, page_alloc: Reduce branches in zone_statistics Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-25 11:15 ` Vlastimil Babka
2016-04-25 11:15 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 04/28] mm, page_alloc: Inline zone_statistics Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-25 11:17 ` Vlastimil Babka
2016-04-25 11:17 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 05/28] mm, page_alloc: Inline the fast path of the zonelist iterator Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-25 14:50 ` Vlastimil Babka
2016-04-25 14:50 ` Vlastimil Babka
2016-04-26 10:30 ` Mel Gorman
2016-04-26 10:30 ` Mel Gorman
2016-04-26 11:05 ` Vlastimil Babka
2016-04-26 11:05 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 06/28] mm, page_alloc: Use __dec_zone_state for order-0 page allocation Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-26 11:25 ` Vlastimil Babka
2016-04-26 11:25 ` Vlastimil Babka
2016-04-15 8:58 ` [PATCH 07/28] mm, page_alloc: Avoid unnecessary zone lookups during pageblock operations Mel Gorman
2016-04-15 8:58 ` Mel Gorman
2016-04-26 11:29 ` Vlastimil Babka
2016-04-26 11:29 ` Vlastimil Babka
2016-04-15 8:59 ` [PATCH 08/28] mm, page_alloc: Convert alloc_flags to unsigned Mel Gorman
2016-04-15 8:59 ` Mel Gorman
2016-04-26 11:31 ` Vlastimil Babka
2016-04-26 11:31 ` Vlastimil Babka
2016-04-15 8:59 ` [PATCH 09/28] mm, page_alloc: Convert nr_fair_skipped to bool Mel Gorman
2016-04-15 8:59 ` Mel Gorman
2016-04-26 11:37 ` Vlastimil Babka
2016-04-26 11:37 ` Vlastimil Babka
2016-04-15 8:59 ` [PATCH 10/28] mm, page_alloc: Remove unnecessary local variable in get_page_from_freelist Mel Gorman
2016-04-15 8:59 ` Mel Gorman
2016-04-26 11:38 ` Vlastimil Babka
2016-04-26 11:38 ` Vlastimil Babka
2016-04-15 8:59 ` [PATCH 11/28] mm, page_alloc: Remove unnecessary initialisation " Mel Gorman
2016-04-15 8:59 ` Mel Gorman
2016-04-26 11:39 ` Vlastimil Babka
2016-04-26 11:39 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 13/28] mm, page_alloc: Remove redundant check for empty zonelist Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-15 9:07 ` [PATCH 14/28] mm, page_alloc: Simplify last cpupid reset Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 13:30 ` Vlastimil Babka
2016-04-26 13:30 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 15/28] mm, page_alloc: Move might_sleep_if check to the allocator slowpath Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 13:41 ` Vlastimil Babka
2016-04-26 13:41 ` Vlastimil Babka
2016-04-26 14:50 ` Mel Gorman
2016-04-26 14:50 ` Mel Gorman
2016-04-26 15:16 ` Vlastimil Babka
2016-04-26 15:16 ` Vlastimil Babka
2016-04-26 16:29 ` Mel Gorman
2016-04-26 16:29 ` Mel Gorman
2016-04-15 9:07 ` [PATCH 16/28] mm, page_alloc: Move __GFP_HARDWALL modifications out of the fastpath Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 14:13 ` Vlastimil Babka
2016-04-26 14:13 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 17/28] mm, page_alloc: Check once if a zone has isolated pageblocks Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 14:27 ` Vlastimil Babka
2016-04-26 14:27 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 18/28] mm, page_alloc: Shorten the page allocator fast path Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 15:23 ` Vlastimil Babka
2016-04-26 15:23 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 19/28] mm, page_alloc: Reduce cost of fair zone allocation policy retry Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 17:24 ` Vlastimil Babka
2016-04-26 17:24 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 20/28] mm, page_alloc: Shortcut watermark checks for order-0 pages Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 17:32 ` Vlastimil Babka
2016-04-26 17:32 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 21/28] mm, page_alloc: Avoid looking up the first zone in a zonelist twice Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 17:46 ` Vlastimil Babka
2016-04-26 17:46 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 22/28] mm, page_alloc: Remove field from alloc_context Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-15 9:07 ` [PATCH 23/28] mm, page_alloc: Check multiple page fields with a single branch Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 18:41 ` Vlastimil Babka
2016-04-26 18:41 ` Vlastimil Babka
2016-04-27 10:07 ` Mel Gorman
2016-04-27 10:07 ` Mel Gorman
2016-04-15 9:07 ` [PATCH 24/28] mm, page_alloc: Remove unnecessary variable from free_pcppages_bulk Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 18:43 ` Vlastimil Babka
2016-04-26 18:43 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 25/28] mm, page_alloc: Inline pageblock lookup in page free fast paths Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 19:10 ` Vlastimil Babka
2016-04-26 19:10 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 26/28] cpuset: use static key better and convert to new API Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-26 19:49 ` Vlastimil Babka
2016-04-26 19:49 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 27/28] mm, page_alloc: Defer debugging checks of freed pages until a PCP drain Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-27 11:59 ` Vlastimil Babka
2016-04-27 11:59 ` Vlastimil Babka
2016-04-27 12:01 ` [PATCH 1/3] mm, page_alloc: un-inline the bad part of free_pages_check Vlastimil Babka
2016-04-27 12:01 ` Vlastimil Babka
2016-04-27 12:01 ` [PATCH 2/3] mm, page_alloc: pull out side effects from free_pages_check Vlastimil Babka
2016-04-27 12:01 ` Vlastimil Babka
2016-04-27 12:41 ` Mel Gorman
2016-04-27 12:41 ` Mel Gorman
2016-04-27 13:00 ` Vlastimil Babka
2016-04-27 13:00 ` Vlastimil Babka
2016-04-27 12:01 ` [PATCH 3/3] mm, page_alloc: don't duplicate code in free_pcp_prepare Vlastimil Babka
2016-04-27 12:01 ` Vlastimil Babka
2016-04-27 12:37 ` [PATCH 1/3] mm, page_alloc: un-inline the bad part of free_pages_check Mel Gorman
2016-04-27 12:37 ` Mel Gorman
2016-04-27 12:53 ` Vlastimil Babka
2016-04-27 12:53 ` Vlastimil Babka
2016-04-15 9:07 ` [PATCH 28/28] mm, page_alloc: Defer debugging checks of pages allocated from the PCP Mel Gorman
2016-04-15 9:07 ` Mel Gorman
2016-04-27 14:06 ` Vlastimil Babka
2016-04-27 14:06 ` Vlastimil Babka
2016-04-27 15:31 ` Mel Gorman [this message]
2016-04-27 15:31 ` Mel Gorman
2016-05-17 6:41 ` Naoya Horiguchi
2016-05-17 6:41 ` Naoya Horiguchi
2016-05-18 7:51 ` Vlastimil Babka
2016-05-18 7:51 ` Vlastimil Babka
2016-05-18 7:55 ` Vlastimil Babka
2016-05-18 7:55 ` Vlastimil Babka
2016-05-18 8:49 ` Mel Gorman
2016-05-18 8:49 ` Mel Gorman
2016-04-26 12:04 ` [PATCH 13/28] mm, page_alloc: Remove redundant check for empty zonelist Vlastimil Babka
2016-04-26 12:04 ` Vlastimil Babka
2016-04-26 13:00 ` Mel Gorman
2016-04-26 13:00 ` Mel Gorman
2016-04-26 19:11 ` Andrew Morton
2016-04-26 19:11 ` Andrew Morton
2016-04-15 12:44 ` [PATCH 00/28] Optimise page alloc/free fast paths v3 Jesper Dangaard Brouer
2016-04-15 12:44 ` Jesper Dangaard Brouer
2016-04-15 13:08 ` Mel Gorman
2016-04-15 13:08 ` Mel Gorman
2016-04-16 7:21 ` [PATCH 12/28] mm, page_alloc: Remove unnecessary initialisation from __alloc_pages_nodemask() Mel Gorman
2016-04-16 7:21 ` Mel Gorman
2016-04-26 11:41 ` Vlastimil Babka
2016-04-26 11:41 ` Vlastimil Babka
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160427153121.GK2858@techsingularity.net \
--to=mgorman@techsingularity.net \
--cc=akpm@linux-foundation.org \
--cc=brouer@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=vbabka@suse.cz \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.