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From: Mel Gorman <mgorman@techsingularity.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Chuck Lever <chuck.lever@oracle.com>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>, Michal Hocko <mhocko@kernel.org>,
	Vlastimil Babka <vbabka@suse.cz>, Linux-MM <linux-mm@kvack.org>,
	Linux-RT-Users <linux-rt-users@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Mel Gorman <mgorman@techsingularity.net>
Subject: [PATCH 4/9] mm/vmstat: Inline NUMA event counter updates
Date: Wed, 12 May 2021 10:54:53 +0100
Message-ID: <20210512095458.30632-5-mgorman@techsingularity.net> (raw)
In-Reply-To: <20210512095458.30632-1-mgorman@techsingularity.net>

__count_numa_event is small enough to be treated similarly to
__count_vm_event so inline it.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
---
 include/linux/vmstat.h | 10 +++++++++-
 mm/vmstat.c            |  9 ---------
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 59748bbbba4c..fe32a2210e73 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -238,7 +238,15 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone,
 }
 
 #ifdef CONFIG_NUMA
-extern void __count_numa_event(struct zone *zone, enum numa_stat_item item);
+/* See __count_vm_event comment on why raw_cpu_inc is used. */
+static inline void
+__count_numa_event(struct zone *zone, enum numa_stat_item item)
+{
+	struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats;
+
+	raw_cpu_inc(pzstats->vm_numa_event[item]);
+}
+
 extern unsigned long sum_zone_node_page_state(int node,
 					      enum zone_stat_item item);
 extern unsigned long sum_zone_numa_event_state(int node, enum numa_stat_item item);
diff --git a/mm/vmstat.c b/mm/vmstat.c
index c6434bab7feb..f71387aced32 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -938,15 +938,6 @@ void drain_zonestat(struct zone *zone, struct per_cpu_zonestat *pzstats)
 #endif
 
 #ifdef CONFIG_NUMA
-/* See __count_vm_event comment on why raw_cpu_inc is used. */
-void __count_numa_event(struct zone *zone,
-				 enum numa_stat_item item)
-{
-	struct per_cpu_zonestat __percpu *pzstats = zone->per_cpu_zonestats;
-
-	raw_cpu_inc(pzstats->vm_numa_event[item]);
-}
-
 /*
  * Determine the per node value of a stat item. This function
  * is called frequently in a NUMA machine, so try to be as
-- 
2.26.2


  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-12  9:54 [PATCH 0/9 v6] Use local_lock for pcp protection and reduce stat overhead Mel Gorman
2021-05-12  9:54 ` [PATCH 1/9] mm/page_alloc: Split per cpu page lists and zone stats Mel Gorman
2021-05-12  9:54 ` [PATCH 2/9] mm/page_alloc: Convert per-cpu list protection to local_lock Mel Gorman
2021-05-12  9:54 ` [PATCH 3/9] mm/vmstat: Convert NUMA statistics to basic NUMA counters Mel Gorman
2021-05-12 10:11   ` Vlastimil Babka
2021-05-12  9:54 ` Mel Gorman [this message]
2021-05-12  9:54 ` [PATCH 5/9] mm/page_alloc: Batch the accounting updates in the bulk allocator Mel Gorman
2021-05-12  9:54 ` [PATCH 6/9] mm/page_alloc: Reduce duration that IRQs are disabled for VM counters Mel Gorman
2021-05-12  9:54 ` [PATCH 7/9] mm/page_alloc: Explicitly acquire the zone lock in __free_pages_ok Mel Gorman
2021-05-12  9:54 ` [PATCH 8/9] mm/page_alloc: Avoid conflating IRQs disabled with zone->lock Mel Gorman
2021-05-12  9:54 ` [PATCH 9/9] mm/page_alloc: Update PGFREE outside the zone lock in __free_pages_ok Mel Gorman
2021-05-12 13:06 ` [PATCH 0/9 v6] Use local_lock for pcp protection and reduce stat overhead Peter Zijlstra
  -- strict thread matches above, loose matches on Subject: below --
2021-04-22 11:14 [PATCH 0/9 v5] " Mel Gorman
2021-04-22 11:14 ` [PATCH 4/9] mm/vmstat: Inline NUMA event counter updates Mel Gorman

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