Linux-rt-users Archive on lore.kernel.org
 help / color / Atom feed
From: Vlastimil Babka <vbabka@suse.cz>
To: Mel Gorman <mgorman@techsingularity.net>,
	Linux-MM <linux-mm@kvack.org>,
	Linux-RT-Users <linux-rt-users@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Chuck Lever <chuck.lever@oracle.com>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>, Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH 04/11] mm/vmstat: Inline NUMA event counter updates
Date: Wed, 14 Apr 2021 18:26:25 +0200
Message-ID: <411a753f-ce03-389d-9a9f-93d17b284862@suse.cz> (raw)
In-Reply-To: <6b25af48-9c6e-2c55-03d5-763de4aba149@suse.cz>

On 4/14/21 6:20 PM, Vlastimil Babka wrote:
> On 4/14/21 3:39 PM, Mel Gorman wrote:
>> __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 | 9 +++++++++
>>  mm/vmstat.c            | 9 ---------
>>  2 files changed, 9 insertions(+), 9 deletions(-)
>> 
>> diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
>> index fc14415223c5..dde4dec4e7dd 100644
>> --- a/include/linux/vmstat.h
>> +++ b/include/linux/vmstat.h
>> @@ -237,6 +237,15 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone,
>>  }
>>  
>>  #ifdef CONFIG_NUMA
>> +/* 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 void __count_numa_event(struct zone *zone, enum numa_stat_item item);

Ah, but the line above should be removed.

>>  extern unsigned long sum_zone_node_page_state(int node,
>>  					      enum zone_stat_item item);
>> diff --git a/mm/vmstat.c b/mm/vmstat.c
>> index 63bd84d122c0..b853df95ed0c 100644
>> --- a/mm/vmstat.c
>> +++ b/mm/vmstat.c
>> @@ -902,15 +902,6 @@ 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
>> 
> 


  reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14 13:39 [PATCH 0/11 v3] Use local_lock for pcp protection and reduce stat overhead Mel Gorman
2021-04-14 13:39 ` [PATCH 01/11] mm/page_alloc: Split per cpu page lists and zone stats Mel Gorman
2021-04-14 13:39 ` [PATCH 02/11] mm/page_alloc: Convert per-cpu list protection to local_lock Mel Gorman
2021-04-14 13:39 ` [PATCH 03/11] mm/vmstat: Convert NUMA statistics to basic NUMA counters Mel Gorman
2021-04-14 13:39 ` [PATCH 04/11] mm/vmstat: Inline NUMA event counter updates Mel Gorman
2021-04-14 16:20   ` Vlastimil Babka
2021-04-14 16:26     ` Vlastimil Babka [this message]
2021-04-15  9:34       ` Mel Gorman
2021-04-14 13:39 ` [PATCH 05/11] mm/page_alloc: Batch the accounting updates in the bulk allocator Mel Gorman
2021-04-14 16:31   ` Vlastimil Babka
2021-04-14 13:39 ` [PATCH 06/11] mm/page_alloc: Reduce duration that IRQs are disabled for VM counters Mel Gorman
2021-04-14 17:10   ` Vlastimil Babka
2021-04-14 13:39 ` [PATCH 07/11] mm/page_alloc: Remove duplicate checks if migratetype should be isolated Mel Gorman
2021-04-14 17:21   ` Vlastimil Babka
2021-04-15  9:33     ` Mel Gorman
2021-04-15 11:24       ` Vlastimil Babka
2021-04-14 13:39 ` [PATCH 08/11] mm/page_alloc: Explicitly acquire the zone lock in __free_pages_ok Mel Gorman
2021-04-15 10:24   ` Vlastimil Babka
2021-04-14 13:39 ` [PATCH 09/11] mm/page_alloc: Avoid conflating IRQs disabled with zone->lock Mel Gorman
2021-04-15 12:25   ` Vlastimil Babka
2021-04-15 14:11     ` Mel Gorman
2021-04-14 13:39 ` [PATCH 10/11] mm/page_alloc: Update PGFREE outside the zone lock in __free_pages_ok Mel Gorman
2021-04-15 13:04   ` Vlastimil Babka
2021-04-14 13:39 ` [PATCH 11/11] mm/page_alloc: Embed per_cpu_pages locking within the per-cpu structure Mel Gorman
2021-04-15 14:53   ` Vlastimil Babka
2021-04-15 15:29     ` Mel Gorman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=411a753f-ce03-389d-9a9f-93d17b284862@suse.cz \
    --to=vbabka@suse.cz \
    --cc=brouer@redhat.com \
    --cc=chuck.lever@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-rt-users@vger.kernel.org \
    --cc=mgorman@techsingularity.net \
    --cc=mhocko@kernel.org \
    --cc=mingo@kernel.org \
    --cc=peterz@infradead.org \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-rt-users Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-rt-users/0 linux-rt-users/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-rt-users linux-rt-users/ https://lore.kernel.org/linux-rt-users \
		linux-rt-users@vger.kernel.org
	public-inbox-index linux-rt-users

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-rt-users


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git