On 2025/1/16 8:57, Shakeel Butt wrote:
> On Tue, Jan 14, 2025 at 06:45:20PM +0000, Roman Gushchin wrote:
>> On Tue, Jan 14, 2025 at 12:25:19PM +0000, Chen Ridong wrote:
>>> From: Chen Ridong <chenridong@xxxxxxxxxx>
>>>
>>> The only difference between 'lruvec_page_state' and
>>> 'lruvec_page_state_local' is that they read 'state' and 'state_local',
>>> respectively. Factor out an inner functions to make the code more concise.
>>> Do the same for reading 'memcg_page_stat' and 'memcg_events'.
>>>
>>> Signed-off-by: Chen Ridong <chenridong@xxxxxxxxxx>
>>> ---
>>> mm/memcontrol.c | 72 +++++++++++++++++++++----------------------------
>>> 1 file changed, 30 insertions(+), 42 deletions(-)
>>>
>>> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
>>> index b10e0a8f3375..14541610cad0 100644
>>> --- a/mm/memcontrol.c
>>> +++ b/mm/memcontrol.c
>>> @@ -375,7 +375,8 @@ struct lruvec_stats {
>>> long state_pending[NR_MEMCG_NODE_STAT_ITEMS];
>>> };
>>>
>>> -unsigned long lruvec_page_state(struct lruvec *lruvec, enum node_stat_item idx)
>>> +static unsigned long __lruvec_page_state(struct lruvec *lruvec,
>>> + enum node_stat_item idx, bool local)
>>> {
>>> struct mem_cgroup_per_node *pn;
>>> long x;
>>> @@ -389,7 +390,8 @@ unsigned long lruvec_page_state(struct lruvec *lruvec, enum node_stat_item idx)
>>> return 0;
>>>
>>> pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec);
>>> - x = READ_ONCE(pn->lruvec_stats->state[i]);
>>> + x = local ? READ_ONCE(pn->lruvec_stats->state_local[i]) :
>>> + READ_ONCE(pn->lruvec_stats->state[i]);
>>> #ifdef CONFIG_SMP
>>> if (x < 0)
>>> x = 0;
>>> @@ -397,27 +399,16 @@ unsigned long lruvec_page_state(struct lruvec *lruvec, enum node_stat_item idx)
>>> return x;
>>> }
>>>
>>> +
>>> +unsigned long lruvec_page_state(struct lruvec *lruvec, enum node_stat_item idx)
>>> +{
>>> + return __lruvec_page_state(lruvec, idx, false);
>>> +}
>>
>> I'd move these wrapper function definitions to memcontrol.h and make them
>> static inline.
>
> +1
>
Thank you.
Will update.
Best regards,
Ridong
>>
>> Other than that, lgtm.
>>
>> Thank you!
