From 73e2c6b3dd3b2271aa21d71ef3f4b2a05420789d Mon Sep 17 00:00:00 2001
From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Date: Sat, 6 Oct 2018 16:53:19 +0530
Subject: [PATCH] mm, sched/numa: Remove remaining traces of NUMA rate-limiting
References: bnc#1101669 optimise numa balancing for fast migrate
Patch-mainline: v4.19
Git-commit: e054637597ba36d3729ba6a3a3dd7aad8e2a3003
Remove the leftover pglist_data::numabalancing_migrate_lock and its
initialization, we stopped using this lock with:
efaffc5e40ae ("mm, sched/numa: Remove rate-limiting of automatic NUMA balancing migration")
[ mingo: Rewrote the changelog. ]
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux-MM <linux-mm@kvack.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1538824999-31230-1-git-send-email-srikar@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
include/linux/mmzone.h | 4 ----
mm/page_alloc.c | 3 ---
2 files changed, 7 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 39d74cac0827..8f57f3367277 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -668,10 +668,6 @@ typedef struct pglist_data {
enum zone_type kcompactd_classzone_idx;
wait_queue_head_t kcompactd_wait;
struct task_struct *kcompactd;
-#endif
-#ifdef CONFIG_NUMA_BALANCING
- /* Lock serializing the migrate rate limiting window */
- spinlock_t numabalancing_migrate_lock;
#endif
/*
* This is a per-node reserve of pages that are not available
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9cdeb2b80e9a..e2b7b41439d0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6100,9 +6100,6 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat)
int nid = pgdat->node_id;
pgdat_resize_init(pgdat);
-#ifdef CONFIG_NUMA_BALANCING
- spin_lock_init(&pgdat->numabalancing_migrate_lock);
-#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
spin_lock_init(&pgdat->split_queue_lock);
INIT_LIST_HEAD(&pgdat->split_queue);