From: Mel Gorman <mgorman@suse.de>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrea Arcangeli <aarcange@redhat.com>,
Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Hugh Dickins <hughd@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Paul Turner <pjt@google.com>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Alex Shi <lkml.alex@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [PATCH 09/46] mm: migrate: Add a tracepoint for migrate_pages
Date: Wed, 21 Nov 2012 10:21:15 +0000 [thread overview]
Message-ID: <1353493312-8069-10-git-send-email-mgorman@suse.de> (raw)
In-Reply-To: <1353493312-8069-1-git-send-email-mgorman@suse.de>
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>
---
include/linux/migrate.h | 13 ++++++++--
include/trace/events/migrate.h | 51 ++++++++++++++++++++++++++++++++++++++++
mm/compaction.c | 3 ++-
mm/memory-failure.c | 3 ++-
mm/memory_hotplug.c | 3 ++-
mm/mempolicy.c | 6 +++--
mm/migrate.c | 10 ++++++--
mm/page_alloc.c | 3 ++-
8 files changed, 82 insertions(+), 10 deletions(-)
create mode 100644 include/trace/events/migrate.h
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index ce7e667..9d1c159 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -7,6 +7,15 @@
typedef struct page *new_page_t(struct page *, unsigned long private, int **);
+enum migrate_reason {
+ MR_COMPACTION,
+ MR_MEMORY_FAILURE,
+ MR_MEMORY_HOTPLUG,
+ MR_SYSCALL, /* also applies to cpusets */
+ MR_MEMPOLICY_MBIND,
+ MR_CMA
+};
+
#ifdef CONFIG_MIGRATION
extern void putback_lru_pages(struct list_head *l);
@@ -14,7 +23,7 @@ extern int migrate_page(struct address_space *,
struct page *, struct page *, enum migrate_mode);
extern int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- enum migrate_mode mode);
+ enum migrate_mode mode, int reason);
extern int migrate_huge_page(struct page *, new_page_t x,
unsigned long private, bool offlining,
enum migrate_mode mode);
@@ -35,7 +44,7 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping,
static inline void putback_lru_pages(struct list_head *l) {}
static inline int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, bool offlining,
- enum migrate_mode mode) { return -ENOSYS; }
+ enum migrate_mode mode, int reason) { return -ENOSYS; }
static inline int migrate_huge_page(struct page *page, new_page_t x,
unsigned long private, bool offlining,
enum migrate_mode mode) { return -ENOSYS; }
diff --git a/include/trace/events/migrate.h b/include/trace/events/migrate.h
new file mode 100644
index 0000000..ec2a6cc
--- /dev/null
+++ b/include/trace/events/migrate.h
@@ -0,0 +1,51 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM migrate
+
+#if !defined(_TRACE_MIGRATE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MIGRATE_H
+
+#define MIGRATE_MODE \
+ {MIGRATE_ASYNC, "MIGRATE_ASYNC"}, \
+ {MIGRATE_SYNC_LIGHT, "MIGRATE_SYNC_LIGHT"}, \
+ {MIGRATE_SYNC, "MIGRATE_SYNC"}
+
+#define MIGRATE_REASON \
+ {MR_COMPACTION, "compaction"}, \
+ {MR_MEMORY_FAILURE, "memory_failure"}, \
+ {MR_MEMORY_HOTPLUG, "memory_hotplug"}, \
+ {MR_SYSCALL, "syscall_or_cpuset"}, \
+ {MR_MEMPOLICY_MBIND, "mempolicy_mbind"}, \
+ {MR_CMA, "cma"}
+
+TRACE_EVENT(mm_migrate_pages,
+
+ TP_PROTO(unsigned long succeeded, unsigned long failed,
+ enum migrate_mode mode, int reason),
+
+ TP_ARGS(succeeded, failed, mode, reason),
+
+ TP_STRUCT__entry(
+ __field( unsigned long, succeeded)
+ __field( unsigned long, failed)
+ __field( enum migrate_mode, mode)
+ __field( int, reason)
+ ),
+
+ TP_fast_assign(
+ __entry->succeeded = succeeded;
+ __entry->failed = failed;
+ __entry->mode = mode;
+ __entry->reason = reason;
+ ),
+
+ TP_printk("nr_succeeded=%lu nr_failed=%lu mode=%s reason=%s",
+ __entry->succeeded,
+ __entry->failed,
+ __print_symbolic(__entry->mode, MIGRATE_MODE),
+ __print_symbolic(__entry->reason, MIGRATE_REASON))
+);
+
+#endif /* _TRACE_MIGRATE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
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);
--
1.7.9.2
next prev parent reply other threads:[~2012-11-21 10:31 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-21 10:21 [PATCH 00/46] Automatic NUMA Balancing V4 Mel Gorman
2012-11-21 10:21 ` [PATCH 01/46] x86: mm: only do a local tlb flush in ptep_set_access_flags() Mel Gorman
2012-11-21 10:21 ` [PATCH 02/46] x86: mm: drop TLB flush from ptep_set_access_flags Mel Gorman
2012-11-21 10:21 ` [PATCH 03/46] mm,generic: only flush the local TLB in ptep_set_access_flags Mel Gorman
2012-11-21 10:21 ` [PATCH 04/46] x86/mm: Introduce pte_accessible() Mel Gorman
2012-11-21 10:21 ` [PATCH 05/46] mm: Only flush the TLB when clearing an accessible pte Mel Gorman
2012-11-21 10:21 ` [PATCH 06/46] mm: Count the number of pages affected in change_protection() Mel Gorman
2012-11-21 10:21 ` [PATCH 07/46] mm: Optimize the TLB flush of sys_mprotect() and change_protection() users Mel Gorman
2012-11-21 10:21 ` [PATCH 08/46] mm: compaction: Move migration fail/success stats to migrate.c Mel Gorman
2012-11-21 10:21 ` Mel Gorman [this message]
2012-11-21 10:21 ` [PATCH 10/46] mm: compaction: Add scanned and isolated counters for compaction Mel Gorman
2012-11-21 10:21 ` [PATCH 11/46] mm: numa: define _PAGE_NUMA Mel Gorman
2012-11-21 10:21 ` [PATCH 12/46] mm: numa: pte_numa() and pmd_numa() Mel Gorman
2012-11-21 10:21 ` [PATCH 13/46] mm: numa: Support NUMA hinting page faults from gup/gup_fast Mel Gorman
2012-11-21 10:21 ` [PATCH 14/46] mm: numa: split_huge_page: transfer the NUMA type from the pmd to the pte Mel Gorman
2012-11-21 10:21 ` [PATCH 15/46] mm: numa: Create basic numa page hinting infrastructure Mel Gorman
2012-11-21 10:21 ` [PATCH 16/46] mm: mempolicy: Make MPOL_LOCAL a real policy Mel Gorman
2012-11-21 10:21 ` [PATCH 17/46] mm: mempolicy: Add MPOL_MF_NOOP Mel Gorman
2012-11-21 10:21 ` [PATCH 18/46] mm: mempolicy: Check for misplaced page Mel Gorman
2012-11-21 10:21 ` [PATCH 19/46] mm: migrate: Introduce migrate_misplaced_page() Mel Gorman
2012-11-21 10:21 ` [PATCH 20/46] mm: mempolicy: Use _PAGE_NUMA to migrate pages Mel Gorman
2012-11-21 10:21 ` [PATCH 21/46] mm: mempolicy: Add MPOL_MF_LAZY Mel Gorman
2012-11-21 10:21 ` [PATCH 22/46] mm: mempolicy: Implement change_prot_numa() in terms of change_protection() Mel Gorman
2012-11-21 10:21 ` [PATCH 23/46] mm: mempolicy: Hide MPOL_NOOP and MPOL_MF_LAZY from userspace for now Mel Gorman
2012-11-21 10:21 ` [PATCH 24/46] mm: numa: Add fault driven placement and migration Mel Gorman
2012-11-21 10:21 ` [PATCH 25/46] mm: sched: numa: Implement constant, per task Working Set Sampling (WSS) rate Mel Gorman
2012-11-21 10:21 ` [PATCH 26/46] sched, numa, mm: Count WS scanning against present PTEs, not virtual memory ranges Mel Gorman
2012-11-21 10:21 ` [PATCH 27/46] mm: sched: numa: Implement slow start for working set sampling Mel Gorman
2012-11-21 10:21 ` [PATCH 28/46] mm: numa: Add pte updates, hinting and migration stats Mel Gorman
2012-11-21 10:21 ` [PATCH 29/46] mm: numa: Migrate on reference policy Mel Gorman
2012-11-21 10:21 ` [PATCH 30/46] mm: numa: Migrate pages handled during a pmd_numa hinting fault Mel Gorman
2012-11-21 10:21 ` [PATCH 31/46] mm: numa: Structures for Migrate On Fault per NUMA migration rate limiting Mel Gorman
2012-11-21 10:21 ` [PATCH 32/46] mm: numa: Rate limit the amount of memory that is migrated between nodes Mel Gorman
2012-11-21 10:21 ` [PATCH 33/46] mm: numa: Rate limit setting of pte_numa if node is saturated Mel Gorman
2012-11-21 10:21 ` [PATCH 34/46] sched: numa: Slowly increase the scanning period as NUMA faults are handled Mel Gorman
2012-11-21 10:21 ` [PATCH 35/46] mm: numa: Introduce last_nid to the page frame Mel Gorman
2012-11-21 10:21 ` [PATCH 36/46] mm: numa: Use a two-stage filter to restrict pages being migrated for unlikely task<->node relationships Mel Gorman
2012-11-21 18:25 ` Ingo Molnar
2012-11-21 19:15 ` Mel Gorman
2012-11-21 19:39 ` Mel Gorman
2012-11-21 19:46 ` Rik van Riel
2012-11-22 0:05 ` Ingo Molnar
2012-11-21 10:21 ` [PATCH 37/46] mm: numa: Add THP migration for the NUMA working set scanning fault case Mel Gorman
2012-11-21 11:24 ` Mel Gorman
2012-11-21 12:21 ` Mel Gorman
2012-11-21 10:21 ` [PATCH 38/46] sched: numa: Introduce tsk_home_node() Mel Gorman
2012-11-21 10:21 ` [PATCH 39/46] sched: numa: Make find_busiest_queue() a method Mel Gorman
2012-11-21 10:21 ` [PATCH 40/46] sched: numa: Implement home-node awareness Mel Gorman
2012-11-21 10:21 ` [PATCH 41/46] sched: numa: Introduce per-mm and per-task structures Mel Gorman
2012-11-21 10:21 ` [PATCH 42/46] sched: numa: CPU follows memory Mel Gorman
2012-11-21 10:21 ` [PATCH 43/46] sched: numa: Rename mempolicy to HOME Mel Gorman
2012-11-21 10:21 ` [PATCH 44/46] sched: numa: Consider only one CPU per node for CPU-follows-memory Mel Gorman
2012-11-21 10:21 ` [PATCH 45/46] balancenuma: no task swap in finding placement Mel Gorman
2012-11-21 10:21 ` [PATCH 46/46] Simple CPU follow Mel Gorman
2012-11-21 16:53 ` [PATCH 00/46] Automatic NUMA Balancing V4 Mel Gorman
2012-11-21 17:03 ` Ingo Molnar
2012-11-21 17:20 ` Mel Gorman
2012-11-21 17:33 ` Ingo Molnar
2012-11-21 18:02 ` Mel Gorman
2012-11-21 18:21 ` Ingo Molnar
2012-11-21 19:01 ` Mel Gorman
2012-11-21 23:27 ` Ingo Molnar
2012-11-22 9:32 ` Mel Gorman
2012-11-22 9:05 ` Ingo Molnar
2012-11-22 9:43 ` Mel Gorman
2012-11-22 12:56 ` Mel Gorman
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