Subject: [merged] mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting.patch removed from -mm tree
To: mgorman@xxxxxxx,athorlton@xxxxxxx,riel@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 22 Jan 2014 12:14:42 -0800
The patch titled
Subject: mm: numa: trace tasks that fail migration due to rate limiting
has been removed from the -mm tree. Its filename was
mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxx>
Subject: mm: numa: trace tasks that fail migration due to rate limiting
A low local/remote numa hinting fault ratio is potentially explained by
failed migrations. This patch adds a tracepoint that fires when migration
fails due to migration rate limitation.
Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Cc: Alex Thorlton <athorlton@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/migrate.h | 26 ++++++++++++++++++++++++++
mm/migrate.c | 5 ++++-
2 files changed, 30 insertions(+), 1 deletion(-)
diff -puN include/trace/events/migrate.h~mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting include/trace/events/migrate.h
--- a/include/trace/events/migrate.h~mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting
+++ a/include/trace/events/migrate.h
@@ -45,6 +45,32 @@ TRACE_EVENT(mm_migrate_pages,
__print_symbolic(__entry->reason, MIGRATE_REASON))
);
+TRACE_EVENT(mm_numa_migrate_ratelimit,
+
+ TP_PROTO(struct task_struct *p, int dst_nid, unsigned long nr_pages),
+
+ TP_ARGS(p, dst_nid, nr_pages),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN)
+ __field( pid_t, pid)
+ __field( int, dst_nid)
+ __field( unsigned long, nr_pages)
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
+ __entry->pid = p->pid;
+ __entry->dst_nid = dst_nid;
+ __entry->nr_pages = nr_pages;
+ ),
+
+ TP_printk("comm=%s pid=%d dst_nid=%d nr_pages=%lu",
+ __entry->comm,
+ __entry->pid,
+ __entry->dst_nid,
+ __entry->nr_pages)
+);
#endif /* _TRACE_MIGRATE_H */
/* This part must be outside protection */
diff -puN mm/migrate.c~mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting mm/migrate.c
--- a/mm/migrate.c~mm-numa-trace-tasks-that-fail-migration-due-to-rate-limiting
+++ a/mm/migrate.c
@@ -1614,8 +1614,11 @@ static bool numamigrate_update_ratelimit
msecs_to_jiffies(migrate_interval_millisecs);
spin_unlock(&pgdat->numabalancing_migrate_lock);
}
- if (pgdat->numabalancing_migrate_nr_pages > ratelimit_pages)
+ if (pgdat->numabalancing_migrate_nr_pages > ratelimit_pages) {
+ trace_mm_numa_migrate_ratelimit(current, pgdat->node_id,
+ nr_pages);
return true;
+ }
/*
* This is an unlocked non-atomic update so errors are possible.
_
Patches currently in -mm which might be from mgorman@xxxxxxx are
origin.patch
mm-remove-bug_on-from-mlock_vma_page.patch
x86-mm-account-for-tlb-flushes-only-when-debugging.patch
x86-mm-clean-up-inconsistencies-when-flushing-tlb-ranges.patch
x86-mm-eliminate-redundant-page-table-walk-during-tlb-range-flushing.patch
x86-mm-change-tlb_flushall_shift-for-ivybridge.patch
mm-x86-revisit-tlb_flushall_shift-tuning-for-page-flushes-except-on-ivybridge.patch
mm-page_alloc-allow-__gfp_nofail-to-allocate-below-watermarks-after-reclaim.patch
mm-munlock-fix-potential-race-with-thp-page-split.patch
numa-add-a-sysctl-for-numa_balancing.patch
numa-add-a-sysctl-for-numa_balancing-fix.patch
mm-vmscan-shrink-all-slab-objects-if-tight-on-memory.patch
mm-vmscan-call-numa-unaware-shrinkers-irrespective-of-nodemask.patch
mm-vmscan-respect-numa-policy-mask-when-shrinking-slab-on-direct-reclaim.patch
mm-vmscan-move-call-to-shrink_slab-to-shrink_zones.patch
mm-vmscan-remove-shrink_control-arg-from-do_try_to_free_pages.patch
mm-show-message-when-updating-min_free_kbytes-in-thp.patch
mm-improve-documentation-of-page_order-v2.patch
mm-improve-documentation-of-page_order-v2-fix.patch
linux-next.patch
mm-migratec-fix-setting-of-cpupid-on-page-migration-twice-against-normal-page.patch
zsmalloc-move-it-under-mm.patch
zram-promote-zram-from-staging.patch
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