diff options
author | Mel Gorman <mgorman@suse.de> | 2012-10-19 14:07:31 +0100 |
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committer | Mel Gorman <mgorman@suse.de> | 2012-12-11 14:28:35 +0000 |
commit | 7b2a2d4a18fffac3c4872021529b0657896db788 (patch) | |
tree | a0f05be191f12711a774368f6feb15bcd2eebf1a /mm | |
parent | 5647bc293ab15f66a7b1cda850c5e9d162a6c7c2 (diff) | |
download | op-kernel-dev-7b2a2d4a18fffac3c4872021529b0657896db788.zip op-kernel-dev-7b2a2d4a18fffac3c4872021529b0657896db788.tar.gz |
mm: migrate: Add a tracepoint for migrate_pages
The pgmigrate_success and pgmigrate_fail vmstat counters tells the user
about migration activity but not the type or the reason. This patch adds
a tracepoint to identify the type of page migration and why the page is
being migrated.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Diffstat (limited to 'mm')
-rw-r--r-- | mm/compaction.c | 3 | ||||
-rw-r--r-- | mm/memory-failure.c | 3 | ||||
-rw-r--r-- | mm/memory_hotplug.c | 3 | ||||
-rw-r--r-- | mm/mempolicy.c | 6 | ||||
-rw-r--r-- | mm/migrate.c | 10 | ||||
-rw-r--r-- | mm/page_alloc.c | 3 |
6 files changed, 20 insertions, 8 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 00ad883..2c077a7 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -990,7 +990,8 @@ static int compact_zone(struct zone *zone, struct compact_control *cc) nr_migrate = cc->nr_migratepages; err = migrate_pages(&cc->migratepages, compaction_alloc, (unsigned long)cc, false, - cc->sync ? MIGRATE_SYNC_LIGHT : MIGRATE_ASYNC); + cc->sync ? MIGRATE_SYNC_LIGHT : MIGRATE_ASYNC, + MR_COMPACTION); update_nr_listpages(cc); nr_remaining = cc->nr_migratepages; diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 6c5899b..ddb68a1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1558,7 +1558,8 @@ int soft_offline_page(struct page *page, int flags) page_is_file_cache(page)); list_add(&page->lru, &pagelist); ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, - false, MIGRATE_SYNC); + false, MIGRATE_SYNC, + MR_MEMORY_FAILURE); if (ret) { putback_lru_pages(&pagelist); pr_info("soft offline: %#lx: migration failed %d, type %lx\n", diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index e4eeaca..e598bd1 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -812,7 +812,8 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) * migrate_pages returns # of failed pages. */ ret = migrate_pages(&source, alloc_migrate_target, 0, - true, MIGRATE_SYNC); + true, MIGRATE_SYNC, + MR_MEMORY_HOTPLUG); if (ret) putback_lru_pages(&source); } diff --git a/mm/mempolicy.c b/mm/mempolicy.c index d04a8a5..66e90ec 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -961,7 +961,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, if (!list_empty(&pagelist)) { err = migrate_pages(&pagelist, new_node_page, dest, - false, MIGRATE_SYNC); + false, MIGRATE_SYNC, + MR_SYSCALL); if (err) putback_lru_pages(&pagelist); } @@ -1202,7 +1203,8 @@ static long do_mbind(unsigned long start, unsigned long len, if (!list_empty(&pagelist)) { nr_failed = migrate_pages(&pagelist, new_vma_page, (unsigned long)vma, - false, MIGRATE_SYNC); + false, MIGRATE_SYNC, + MR_MEMPOLICY_MBIND); if (nr_failed) putback_lru_pages(&pagelist); } diff --git a/mm/migrate.c b/mm/migrate.c index 04687f6..27be9c9 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -38,6 +38,9 @@ #include <asm/tlbflush.h> +#define CREATE_TRACE_POINTS +#include <trace/events/migrate.h> + #include "internal.h" /* @@ -958,7 +961,7 @@ out: */ int migrate_pages(struct list_head *from, new_page_t get_new_page, unsigned long private, bool offlining, - enum migrate_mode mode) + enum migrate_mode mode, int reason) { int retry = 1; int nr_failed = 0; @@ -1004,6 +1007,8 @@ out: count_vm_events(PGMIGRATE_SUCCESS, nr_succeeded); if (nr_failed) count_vm_events(PGMIGRATE_FAIL, nr_failed); + trace_mm_migrate_pages(nr_succeeded, nr_failed, mode, reason); + if (!swapwrite) current->flags &= ~PF_SWAPWRITE; @@ -1145,7 +1150,8 @@ set_status: err = 0; if (!list_empty(&pagelist)) { err = migrate_pages(&pagelist, new_page_node, - (unsigned long)pm, 0, MIGRATE_SYNC); + (unsigned long)pm, 0, MIGRATE_SYNC, + MR_SYSCALL); if (err) putback_lru_pages(&pagelist); } diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7bb35ac..5953dc2 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5707,7 +5707,8 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, ret = migrate_pages(&cc->migratepages, alloc_migrate_target, - 0, false, MIGRATE_SYNC); + 0, false, MIGRATE_SYNC, + MR_CMA); } putback_lru_pages(&cc->migratepages); |