From: Vlastimil Babka <vbabka@suse.cz> To: Andrew Morton <akpm@linux-foundation.org>, David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com>, Greg Thelen <gthelen@google.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka <vbabka@suse.cz>, Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>, Michal Nazarewicz <mina86@mina86.com>, Christoph Lameter <cl@linux.com>, Rik van Riel <riel@redhat.com> Subject: [PATCH v2 1/2] mm/compaction: do not count migratepages when unnecessary Date: Wed, 7 May 2014 14:09:09 +0200 [thread overview] Message-ID: <1399464550-26447-1-git-send-email-vbabka@suse.cz> (raw) In-Reply-To: <alpine.DEB.2.02.1405061922220.18635@chino.kir.corp.google.com> During compaction, update_nr_listpages() has been used to count remaining non-migrated and free pages after a call to migrage_pages(). The freepages counting has become unneccessary, and it turns out that migratepages counting is also unnecessary in most cases. The only situation when it's needed to count cc->migratepages is when migrate_pages() returns with a negative error code. Otherwise, the non-negative return value is the number of pages that were not migrated, which is exactly the count of remaining pages in the cc->migratepages list. Furthermore, any non-zero count is only interesting for the tracepoint of mm_compaction_migratepages events, because after that all remaining unmigrated pages are put back and their count is set to 0. This patch therefore removes update_nr_listpages() completely, and changes the tracepoint definition so that the manual counting is done only when the tracepoint is enabled, and only when migrate_pages() returns a negative error code. Furthermore, migrate_pages() and the tracepoints won't be called when there's nothing to migrate. This potentially avoids some wasted cycles and reduces the volume of uninteresting mm_compaction_migratepages events where "nr_migrated=0 nr_failed=0". In the stress-highalloc mmtest, this was about 75% of the events. The mm_compaction_isolate_migratepages event is better for determining that nothing was isolated for migration, and this one was just duplicating the info. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Christoph Lameter <cl@linux.com> Cc: Rik van Riel <riel@redhat.com> --- v2: checkpack and other non-functional fixes suggested by Naoya Horiguchi include/trace/events/compaction.h | 26 ++++++++++++++++++++++---- mm/compaction.c | 31 +++++++------------------------ 2 files changed, 29 insertions(+), 28 deletions(-) diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h index 06f544e..aacaf0f 100644 --- a/include/trace/events/compaction.h +++ b/include/trace/events/compaction.h @@ -5,7 +5,9 @@ #define _TRACE_COMPACTION_H #include <linux/types.h> +#include <linux/list.h> #include <linux/tracepoint.h> +#include <linux/mm_types.h> #include <trace/events/gfpflags.h> DECLARE_EVENT_CLASS(mm_compaction_isolate_template, @@ -47,10 +49,11 @@ DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_freepages, TRACE_EVENT(mm_compaction_migratepages, - TP_PROTO(unsigned long nr_migrated, - unsigned long nr_failed), + TP_PROTO(unsigned long nr_all, + int migrate_rc, + struct list_head *migratepages), - TP_ARGS(nr_migrated, nr_failed), + TP_ARGS(nr_all, migrate_rc, migratepages), TP_STRUCT__entry( __field(unsigned long, nr_migrated) @@ -58,7 +61,22 @@ TRACE_EVENT(mm_compaction_migratepages, ), TP_fast_assign( - __entry->nr_migrated = nr_migrated; + unsigned long nr_failed = 0; + struct page *page; + + /* + * migrate_pages() returns either a non-negative number + * with the number of pages that failed migration, or an + * error code, in which case we need to count the remaining + * pages manually + */ + if (migrate_rc >= 0) + nr_failed = migrate_rc; + else + list_for_each_entry(page, migratepages, lru) + nr_failed++; + + __entry->nr_migrated = nr_all - nr_failed; __entry->nr_failed = nr_failed; ), diff --git a/mm/compaction.c b/mm/compaction.c index 6f4b218..383d562 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -819,22 +819,6 @@ static void compaction_free(struct page *page, unsigned long data) cc->nr_freepages++; } -/* - * We cannot control nr_migratepages fully when migration is running as - * migrate_pages() has no knowledge of of compact_control. When migration is - * complete, we count the number of pages on the list by hand. - */ -static void update_nr_listpages(struct compact_control *cc) -{ - int nr_migratepages = 0; - struct page *page; - - list_for_each_entry(page, &cc->migratepages, lru) - nr_migratepages++; - - cc->nr_migratepages = nr_migratepages; -} - /* possible outcome of isolate_migratepages */ typedef enum { ISOLATE_ABORT, /* Abort compaction now */ @@ -1029,7 +1013,6 @@ static int compact_zone(struct zone *zone, struct compact_control *cc) migrate_prep_local(); while ((ret = compact_finished(zone, cc)) == COMPACT_CONTINUE) { - unsigned long nr_migrate, nr_remaining; int err; switch (isolate_migratepages(zone, cc)) { @@ -1044,20 +1027,20 @@ static int compact_zone(struct zone *zone, struct compact_control *cc) ; } - nr_migrate = cc->nr_migratepages; + if (!cc->nr_migratepages) + continue; + err = migrate_pages(&cc->migratepages, compaction_alloc, compaction_free, (unsigned long)cc, cc->mode, MR_COMPACTION); - update_nr_listpages(cc); - nr_remaining = cc->nr_migratepages; - trace_mm_compaction_migratepages(nr_migrate - nr_remaining, - nr_remaining); + trace_mm_compaction_migratepages(cc->nr_migratepages, err, + &cc->migratepages); - /* Release isolated pages not migrated */ + /* All pages were either migrated or will be released */ + cc->nr_migratepages = 0; if (err) { putback_movable_pages(&cc->migratepages); - cc->nr_migratepages = 0; /* * migrate_pages() may return -ENOMEM when scanners meet * and we want compact_finished() to detect it -- 1.8.4.5
WARNING: multiple messages have this Message-ID (diff)
From: Vlastimil Babka <vbabka@suse.cz> To: Andrew Morton <akpm@linux-foundation.org>, David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com>, Greg Thelen <gthelen@google.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka <vbabka@suse.cz>, Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>, Michal Nazarewicz <mina86@mina86.com>, Christoph Lameter <cl@linux.com>, Rik van Riel <riel@redhat.com> Subject: [PATCH v2 1/2] mm/compaction: do not count migratepages when unnecessary Date: Wed, 7 May 2014 14:09:09 +0200 [thread overview] Message-ID: <1399464550-26447-1-git-send-email-vbabka@suse.cz> (raw) In-Reply-To: <alpine.DEB.2.02.1405061922220.18635@chino.kir.corp.google.com> During compaction, update_nr_listpages() has been used to count remaining non-migrated and free pages after a call to migrage_pages(). The freepages counting has become unneccessary, and it turns out that migratepages counting is also unnecessary in most cases. The only situation when it's needed to count cc->migratepages is when migrate_pages() returns with a negative error code. Otherwise, the non-negative return value is the number of pages that were not migrated, which is exactly the count of remaining pages in the cc->migratepages list. Furthermore, any non-zero count is only interesting for the tracepoint of mm_compaction_migratepages events, because after that all remaining unmigrated pages are put back and their count is set to 0. This patch therefore removes update_nr_listpages() completely, and changes the tracepoint definition so that the manual counting is done only when the tracepoint is enabled, and only when migrate_pages() returns a negative error code. Furthermore, migrate_pages() and the tracepoints won't be called when there's nothing to migrate. This potentially avoids some wasted cycles and reduces the volume of uninteresting mm_compaction_migratepages events where "nr_migrated=0 nr_failed=0". In the stress-highalloc mmtest, this was about 75% of the events. The mm_compaction_isolate_migratepages event is better for determining that nothing was isolated for migration, and this one was just duplicating the info. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Christoph Lameter <cl@linux.com> Cc: Rik van Riel <riel@redhat.com> --- v2: checkpack and other non-functional fixes suggested by Naoya Horiguchi include/trace/events/compaction.h | 26 ++++++++++++++++++++++---- mm/compaction.c | 31 +++++++------------------------ 2 files changed, 29 insertions(+), 28 deletions(-) diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h index 06f544e..aacaf0f 100644 --- a/include/trace/events/compaction.h +++ b/include/trace/events/compaction.h @@ -5,7 +5,9 @@ #define _TRACE_COMPACTION_H #include <linux/types.h> +#include <linux/list.h> #include <linux/tracepoint.h> +#include <linux/mm_types.h> #include <trace/events/gfpflags.h> DECLARE_EVENT_CLASS(mm_compaction_isolate_template, @@ -47,10 +49,11 @@ DEFINE_EVENT(mm_compaction_isolate_template, mm_compaction_isolate_freepages, TRACE_EVENT(mm_compaction_migratepages, - TP_PROTO(unsigned long nr_migrated, - unsigned long nr_failed), + TP_PROTO(unsigned long nr_all, + int migrate_rc, + struct list_head *migratepages), - TP_ARGS(nr_migrated, nr_failed), + TP_ARGS(nr_all, migrate_rc, migratepages), TP_STRUCT__entry( __field(unsigned long, nr_migrated) @@ -58,7 +61,22 @@ TRACE_EVENT(mm_compaction_migratepages, ), TP_fast_assign( - __entry->nr_migrated = nr_migrated; + unsigned long nr_failed = 0; + struct page *page; + + /* + * migrate_pages() returns either a non-negative number + * with the number of pages that failed migration, or an + * error code, in which case we need to count the remaining + * pages manually + */ + if (migrate_rc >= 0) + nr_failed = migrate_rc; + else + list_for_each_entry(page, migratepages, lru) + nr_failed++; + + __entry->nr_migrated = nr_all - nr_failed; __entry->nr_failed = nr_failed; ), diff --git a/mm/compaction.c b/mm/compaction.c index 6f4b218..383d562 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -819,22 +819,6 @@ static void compaction_free(struct page *page, unsigned long data) cc->nr_freepages++; } -/* - * We cannot control nr_migratepages fully when migration is running as - * migrate_pages() has no knowledge of of compact_control. When migration is - * complete, we count the number of pages on the list by hand. - */ -static void update_nr_listpages(struct compact_control *cc) -{ - int nr_migratepages = 0; - struct page *page; - - list_for_each_entry(page, &cc->migratepages, lru) - nr_migratepages++; - - cc->nr_migratepages = nr_migratepages; -} - /* possible outcome of isolate_migratepages */ typedef enum { ISOLATE_ABORT, /* Abort compaction now */ @@ -1029,7 +1013,6 @@ static int compact_zone(struct zone *zone, struct compact_control *cc) migrate_prep_local(); while ((ret = compact_finished(zone, cc)) == COMPACT_CONTINUE) { - unsigned long nr_migrate, nr_remaining; int err; switch (isolate_migratepages(zone, cc)) { @@ -1044,20 +1027,20 @@ static int compact_zone(struct zone *zone, struct compact_control *cc) ; } - nr_migrate = cc->nr_migratepages; + if (!cc->nr_migratepages) + continue; + err = migrate_pages(&cc->migratepages, compaction_alloc, compaction_free, (unsigned long)cc, cc->mode, MR_COMPACTION); - update_nr_listpages(cc); - nr_remaining = cc->nr_migratepages; - trace_mm_compaction_migratepages(nr_migrate - nr_remaining, - nr_remaining); + trace_mm_compaction_migratepages(cc->nr_migratepages, err, + &cc->migratepages); - /* Release isolated pages not migrated */ + /* All pages were either migrated or will be released */ + cc->nr_migratepages = 0; if (err) { putback_movable_pages(&cc->migratepages); - cc->nr_migratepages = 0; /* * migrate_pages() may return -ENOMEM when scanners meet * and we want compact_finished() to detect it -- 1.8.4.5 -- 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:[~2014-05-07 12:09 UTC|newest] Thread overview: 267+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-05-01 0:45 [patch 1/2] mm, migration: add destination page freeing callback David Rientjes 2014-05-01 0:45 ` David Rientjes 2014-05-01 0:45 ` [patch 2/2] mm, compaction: return failed migration target pages back to freelist David Rientjes 2014-05-01 0:45 ` David Rientjes 2014-05-01 5:10 ` Naoya Horiguchi 2014-05-01 21:02 ` David Rientjes 2014-05-01 21:02 ` David Rientjes 2014-05-01 5:08 ` [patch 1/2] mm, migration: add destination page freeing callback Naoya Horiguchi [not found] ` <5361d71e.236ec20a.1b3d.ffffc8aeSMTPIN_ADDED_BROKEN@mx.google.com> 2014-05-01 21:02 ` David Rientjes 2014-05-01 21:02 ` David Rientjes 2014-05-01 21:35 ` [patch v2 1/4] " David Rientjes 2014-05-01 21:35 ` David Rientjes 2014-05-01 21:35 ` [patch v2 2/4] mm, compaction: return failed migration target pages back to freelist David Rientjes 2014-05-01 21:35 ` David Rientjes 2014-05-02 10:11 ` Mel Gorman 2014-05-02 10:11 ` Mel Gorman 2014-05-02 15:23 ` Vlastimil Babka 2014-05-02 15:23 ` Vlastimil Babka 2014-05-02 15:26 ` [PATCH] mm/compaction: do not count migratepages when unnecessary Vlastimil Babka 2014-05-06 21:18 ` Naoya Horiguchi [not found] ` <1399411134-k43fsr0p@n-horiguchi@ah.jp.nec.com> 2014-05-07 9:33 ` Vlastimil Babka 2014-05-07 9:33 ` Vlastimil Babka 2014-05-02 15:27 ` [PATCH 2/2] mm/compaction: avoid rescanning pageblocks in isolate_freepages Vlastimil Babka 2014-05-02 15:27 ` Vlastimil Babka 2014-05-06 22:19 ` Naoya Horiguchi [not found] ` <1399414778-xakujfb3@n-horiguchi@ah.jp.nec.com> 2014-05-07 9:22 ` Vlastimil Babka 2014-05-07 9:22 ` Vlastimil Babka 2014-05-02 15:29 ` [PATCH 1/2] mm/compaction: do not count migratepages when unnecessary Vlastimil Babka 2014-05-02 15:29 ` Vlastimil Babka 2014-05-01 21:35 ` [patch v2 3/4] mm, compaction: add per-zone migration pfn cache for async compaction David Rientjes 2014-05-01 21:35 ` David Rientjes 2014-05-05 9:34 ` Vlastimil Babka 2014-05-05 9:34 ` Vlastimil Babka 2014-05-05 9:51 ` David Rientjes 2014-05-05 9:51 ` David Rientjes 2014-05-05 14:24 ` Vlastimil Babka 2014-05-05 14:24 ` Vlastimil Babka 2014-05-06 0:29 ` David Rientjes 2014-05-06 0:29 ` David Rientjes 2014-05-06 11:52 ` Vlastimil Babka 2014-05-06 11:52 ` Vlastimil Babka 2014-05-01 21:35 ` [patch v2 4/4] mm, thp: do not perform sync compaction on pagefault David Rientjes 2014-05-01 21:35 ` David Rientjes 2014-05-02 10:22 ` Mel Gorman 2014-05-02 10:22 ` Mel Gorman 2014-05-02 11:22 ` David Rientjes 2014-05-02 11:22 ` David Rientjes 2014-05-02 11:58 ` Mel Gorman 2014-05-02 20:29 ` David Rientjes 2014-05-02 20:29 ` David Rientjes 2014-05-05 14:48 ` Vlastimil Babka 2014-05-05 14:48 ` Vlastimil Babka 2014-05-06 8:55 ` Mel Gorman 2014-05-06 8:55 ` Mel Gorman 2014-05-06 15:05 ` Vlastimil Babka 2014-05-06 15:05 ` Vlastimil Babka 2014-05-02 10:10 ` [patch v2 1/4] mm, migration: add destination page freeing callback Mel Gorman 2014-05-07 2:22 ` [patch v3 1/6] " David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 2:22 ` [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 14:14 ` Naoya Horiguchi 2014-05-07 21:15 ` Andrew Morton 2014-05-07 21:15 ` Andrew Morton 2014-05-07 21:21 ` David Rientjes 2014-05-07 21:21 ` David Rientjes 2014-05-12 8:35 ` Vlastimil Babka 2014-05-12 8:35 ` Vlastimil Babka 2014-05-07 21:39 ` Greg Thelen 2014-05-07 21:39 ` Greg Thelen 2014-05-12 8:37 ` Vlastimil Babka 2014-05-12 8:37 ` Vlastimil Babka 2014-05-07 2:22 ` [patch v3 3/6] mm, compaction: add per-zone migration pfn cache for async compaction David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 9:34 ` Vlastimil Babka 2014-05-07 9:34 ` Vlastimil Babka 2014-05-07 20:56 ` Naoya Horiguchi 2014-05-07 2:22 ` [patch v3 4/6] mm, compaction: embed migration mode in compact_control David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 9:55 ` Vlastimil Babka 2014-05-07 9:55 ` Vlastimil Babka 2014-05-07 10:36 ` [patch v4 " David Rientjes 2014-05-07 10:36 ` David Rientjes 2014-05-09 22:03 ` Andrew Morton 2014-05-09 22:03 ` Andrew Morton 2014-05-07 2:22 ` [patch v3 5/6] mm, thp: avoid excessive compaction latency during fault David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 9:39 ` Mel Gorman 2014-05-07 9:39 ` Mel Gorman 2014-05-08 5:30 ` [patch -mm] mm, thp: avoid excessive compaction latency during fault fix David Rientjes 2014-05-08 5:30 ` David Rientjes 2014-05-13 10:00 ` Vlastimil Babka 2014-05-13 10:00 ` Vlastimil Babka 2014-05-22 2:49 ` David Rientjes 2014-05-22 2:49 ` David Rientjes 2014-05-22 8:43 ` Vlastimil Babka 2014-05-22 8:43 ` Vlastimil Babka 2014-05-07 2:22 ` [patch v3 6/6] mm, compaction: terminate async compaction when rescheduling David Rientjes 2014-05-07 2:22 ` David Rientjes 2014-05-07 9:41 ` Mel Gorman 2014-05-07 9:41 ` Mel Gorman 2014-05-07 12:09 ` Vlastimil Babka [this message] 2014-05-07 12:09 ` [PATCH v2 1/2] mm/compaction: do not count migratepages when unnecessary Vlastimil Babka 2014-05-07 12:09 ` [PATCH v2 2/2] mm/compaction: avoid rescanning pageblocks in isolate_freepages Vlastimil Babka 2014-05-07 12:09 ` Vlastimil Babka 2014-05-07 21:47 ` David Rientjes 2014-05-07 21:47 ` David Rientjes 2014-05-07 22:06 ` Naoya Horiguchi 2014-05-08 5:28 ` Joonsoo Kim 2014-05-08 5:28 ` Joonsoo Kim 2014-05-12 9:09 ` Vlastimil Babka 2014-05-12 9:09 ` Vlastimil Babka 2014-05-13 1:15 ` Joonsoo Kim 2014-05-13 1:15 ` Joonsoo Kim 2014-05-09 15:49 ` Michal Nazarewicz 2014-05-09 15:49 ` Michal Nazarewicz 2014-05-19 10:14 ` Vlastimil Babka 2014-05-19 10:14 ` Vlastimil Babka 2014-05-22 2:51 ` David Rientjes 2014-05-22 2:51 ` David Rientjes 2014-05-07 21:44 ` [PATCH v2 1/2] mm/compaction: do not count migratepages when unnecessary David Rientjes 2014-05-07 21:44 ` David Rientjes 2014-05-09 15:48 ` Michal Nazarewicz 2014-05-09 15:48 ` Michal Nazarewicz 2014-05-12 9:51 ` Vlastimil Babka 2014-05-12 9:51 ` Vlastimil Babka 2014-05-07 12:10 ` [patch v3 6/6] mm, compaction: terminate async compaction when rescheduling Vlastimil Babka 2014-05-07 12:10 ` Vlastimil Babka 2014-05-07 21:20 ` Andrew Morton 2014-05-07 21:20 ` Andrew Morton 2014-05-07 21:28 ` David Rientjes 2014-05-07 21:28 ` David Rientjes 2014-05-08 5:17 ` Joonsoo Kim 2014-05-08 5:17 ` Joonsoo Kim 2014-05-12 14:15 ` [PATCH] mm, compaction: properly signal and act upon lock and need_sched() contention Vlastimil Babka 2014-05-12 14:15 ` Vlastimil Babka 2014-05-12 15:34 ` Naoya Horiguchi [not found] ` <1399908847-ouuxeneo@n-horiguchi@ah.jp.nec.com> 2014-05-12 15:45 ` Vlastimil Babka 2014-05-12 15:45 ` Vlastimil Babka 2014-05-12 15:53 ` Naoya Horiguchi 2014-05-12 20:28 ` David Rientjes 2014-05-12 20:28 ` David Rientjes 2014-05-13 8:50 ` Vlastimil Babka 2014-05-13 8:50 ` Vlastimil Babka 2014-05-13 0:44 ` Joonsoo Kim 2014-05-13 0:44 ` Joonsoo Kim 2014-05-13 8:54 ` Vlastimil Babka 2014-05-13 8:54 ` Vlastimil Babka 2014-05-15 2:21 ` Joonsoo Kim 2014-05-15 2:21 ` Joonsoo Kim 2014-05-16 9:47 ` [PATCH v2] " Vlastimil Babka 2014-05-16 9:47 ` Vlastimil Babka 2014-05-16 17:33 ` Michal Nazarewicz 2014-05-16 17:33 ` Michal Nazarewicz 2014-05-19 23:37 ` Andrew Morton 2014-05-19 23:37 ` Andrew Morton 2014-05-21 14:13 ` Vlastimil Babka 2014-05-21 14:13 ` Vlastimil Babka 2014-05-21 20:11 ` Andrew Morton 2014-05-21 20:11 ` Andrew Morton 2014-05-22 3:20 ` compaction is still too expensive for thp (was: [PATCH v2] mm, compaction: properly signal and act upon lock and need_sched() contention) David Rientjes 2014-05-22 3:20 ` David Rientjes 2014-05-22 8:10 ` compaction is still too expensive for thp Vlastimil Babka 2014-05-22 8:10 ` Vlastimil Babka 2014-05-22 8:55 ` David Rientjes 2014-05-22 8:55 ` David Rientjes 2014-05-22 12:03 ` Vlastimil Babka 2014-05-22 12:03 ` Vlastimil Babka 2014-06-04 0:29 ` [patch -mm 1/3] mm: rename allocflags_to_migratetype for clarity David Rientjes 2014-06-04 0:29 ` David Rientjes 2014-06-04 0:29 ` [patch -mm 2/3] mm, compaction: pass gfp mask to compact_control David Rientjes 2014-06-04 0:29 ` David Rientjes 2014-06-04 0:30 ` [patch -mm 3/3] mm, compaction: avoid compacting memory for thp if pageblock cannot become free David Rientjes 2014-06-04 0:30 ` David Rientjes 2014-06-04 11:04 ` Mel Gorman 2014-06-04 11:04 ` Mel Gorman 2014-06-04 22:02 ` David Rientjes 2014-06-04 22:02 ` David Rientjes 2014-06-04 16:07 ` Vlastimil Babka 2014-06-04 16:07 ` Vlastimil Babka 2014-06-04 16:11 ` [RFC PATCH 1/6] mm, compaction: periodically drop lock and restore IRQs in scanners Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-04 16:11 ` [RFC PATCH 2/6] mm, compaction: skip rechecks when lock was already held Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-04 23:46 ` David Rientjes 2014-06-04 23:46 ` David Rientjes 2014-06-04 16:11 ` [RFC PATCH 3/6] mm, compaction: remember position within pageblock in free pages scanner Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-04 16:11 ` [RFC PATCH 4/6] mm, compaction: skip buddy pages by their order in the migrate scanner Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-05 0:02 ` David Rientjes 2014-06-05 0:02 ` David Rientjes 2014-06-05 9:24 ` Vlastimil Babka 2014-06-05 9:24 ` Vlastimil Babka 2014-06-05 21:30 ` David Rientjes 2014-06-05 21:30 ` David Rientjes 2014-06-06 7:20 ` Vlastimil Babka 2014-06-06 7:20 ` Vlastimil Babka 2014-06-09 9:09 ` David Rientjes 2014-06-09 9:09 ` David Rientjes 2014-06-09 11:35 ` Vlastimil Babka 2014-06-09 11:35 ` Vlastimil Babka 2014-06-09 22:25 ` David Rientjes 2014-06-09 22:25 ` David Rientjes 2014-06-10 7:26 ` Vlastimil Babka 2014-06-10 7:26 ` Vlastimil Babka 2014-06-10 23:54 ` David Rientjes 2014-06-10 23:54 ` David Rientjes 2014-06-11 12:18 ` Vlastimil Babka 2014-06-11 12:18 ` Vlastimil Babka 2014-06-12 0:21 ` David Rientjes 2014-06-12 0:21 ` David Rientjes 2014-06-12 11:56 ` Vlastimil Babka 2014-06-12 11:56 ` Vlastimil Babka 2014-06-12 21:48 ` David Rientjes 2014-06-12 21:48 ` David Rientjes 2014-06-04 16:11 ` [RFC PATCH 5/6] mm, compaction: try to capture the just-created high-order freepage Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-04 16:11 ` [RFC PATCH 6/6] mm, compaction: don't migrate in blocks that cannot be fully compacted in async direct compaction Vlastimil Babka 2014-06-04 16:11 ` Vlastimil Babka 2014-06-05 0:08 ` David Rientjes 2014-06-05 0:08 ` David Rientjes 2014-06-05 15:38 ` Vlastimil Babka 2014-06-05 15:38 ` Vlastimil Babka 2014-06-05 21:38 ` David Rientjes 2014-06-05 21:38 ` David Rientjes 2014-06-06 7:33 ` Vlastimil Babka 2014-06-06 7:33 ` Vlastimil Babka 2014-06-09 9:06 ` David Rientjes 2014-06-09 9:06 ` David Rientjes 2014-06-12 12:18 ` Vlastimil Babka 2014-06-12 12:18 ` Vlastimil Babka 2014-06-04 23:39 ` [RFC PATCH 1/6] mm, compaction: periodically drop lock and restore IRQs in scanners David Rientjes 2014-06-04 23:39 ` David Rientjes 2014-06-05 9:05 ` Vlastimil Babka 2014-06-05 9:05 ` Vlastimil Babka 2014-05-22 23:49 ` [PATCH v2] mm, compaction: properly signal and act upon lock and need_sched() contention Kevin Hilman 2014-05-22 23:49 ` Kevin Hilman 2014-05-23 2:48 ` Shawn Guo 2014-05-23 2:48 ` Shawn Guo 2014-05-23 2:48 ` Shawn Guo 2014-05-23 8:34 ` Vlastimil Babka 2014-05-23 8:34 ` Vlastimil Babka 2014-05-23 8:34 ` Vlastimil Babka 2014-05-23 10:49 ` Shawn Guo 2014-05-23 10:49 ` Shawn Guo 2014-05-23 10:49 ` Shawn Guo 2014-05-23 15:07 ` Kevin Hilman 2014-05-23 15:07 ` Kevin Hilman 2014-05-23 15:07 ` Kevin Hilman 2014-05-30 16:59 ` Stephen Warren 2014-05-30 16:59 ` Stephen Warren 2014-05-30 16:59 ` Stephen Warren 2014-06-02 13:35 ` Fabio Estevam 2014-06-02 13:35 ` Fabio Estevam 2014-06-02 13:35 ` Fabio Estevam 2014-06-02 14:33 ` [PATCH -mm] mm, compaction: properly signal and act upon lock and need_sched() contention - fix Vlastimil Babka 2014-06-02 14:33 ` Vlastimil Babka 2014-06-02 14:33 ` Vlastimil Babka 2014-06-02 15:18 ` Fabio Estevam 2014-06-02 15:18 ` Fabio Estevam 2014-06-02 15:18 ` Fabio Estevam 2014-06-02 20:09 ` David Rientjes 2014-06-02 20:09 ` David Rientjes 2014-06-02 20:09 ` David Rientjes 2014-05-02 13:16 ` [patch 1/2] mm, migration: add destination page freeing callback Vlastimil Babka 2014-05-02 13:16 ` Vlastimil Babka
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