diff mbox series

[v2,21/47] mm: workingset: dynamically allocate the mm-shadow shrinker

Message ID 20230724094354.90817-22-zhengqi.arch@bytedance.com (mailing list archive)
State Not Applicable, archived
Delegated to: Mike Snitzer
Headers show
Series use refcount+RCU method to implement lockless slab shrink | expand

Commit Message

Qi Zheng July 24, 2023, 9:43 a.m. UTC
Use new APIs to dynamically allocate the mm-shadow shrinker.

Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
---
 mm/workingset.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

Comments

Muchun Song July 26, 2023, 7:13 a.m. UTC | #1
> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@bytedance.com> wrote:
> 
> Use new APIs to dynamically allocate the mm-shadow shrinker.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
> ---
> mm/workingset.c | 26 ++++++++++++++------------
> 1 file changed, 14 insertions(+), 12 deletions(-)
> 
> diff --git a/mm/workingset.c b/mm/workingset.c
> index 4686ae363000..4bc85f739b13 100644
> --- a/mm/workingset.c
> +++ b/mm/workingset.c
> @@ -762,12 +762,7 @@ static unsigned long scan_shadow_nodes(struct shrinker *shrinker,
> NULL);
> }
> 
> -static struct shrinker workingset_shadow_shrinker = {
> -	.count_objects = count_shadow_nodes,
> -	.scan_objects = scan_shadow_nodes,
> -	.seeks = 0, /* ->count reports only fully expendable nodes */
> -	.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE,
> -};
> +static struct shrinker *workingset_shadow_shrinker;


Same as patch #17.

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Qi Zheng July 26, 2023, 9:28 a.m. UTC | #2
On 2023/7/26 15:13, Muchun Song wrote:
> 
> 
>> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@bytedance.com> wrote:
>>
>> Use new APIs to dynamically allocate the mm-shadow shrinker.
>>
>> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
>> ---
>> mm/workingset.c | 26 ++++++++++++++------------
>> 1 file changed, 14 insertions(+), 12 deletions(-)
>>
>> diff --git a/mm/workingset.c b/mm/workingset.c
>> index 4686ae363000..4bc85f739b13 100644
>> --- a/mm/workingset.c
>> +++ b/mm/workingset.c
>> @@ -762,12 +762,7 @@ static unsigned long scan_shadow_nodes(struct shrinker *shrinker,
>> NULL);
>> }
>>
>> -static struct shrinker workingset_shadow_shrinker = {
>> -	.count_objects = count_shadow_nodes,
>> -	.scan_objects = scan_shadow_nodes,
>> -	.seeks = 0, /* ->count reports only fully expendable nodes */
>> -	.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE,
>> -};
>> +static struct shrinker *workingset_shadow_shrinker;
> 
> 
> Same as patch #17.

OK, will do.

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diff mbox series

Patch

diff --git a/mm/workingset.c b/mm/workingset.c
index 4686ae363000..4bc85f739b13 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -762,12 +762,7 @@  static unsigned long scan_shadow_nodes(struct shrinker *shrinker,
 					NULL);
 }
 
-static struct shrinker workingset_shadow_shrinker = {
-	.count_objects = count_shadow_nodes,
-	.scan_objects = scan_shadow_nodes,
-	.seeks = 0, /* ->count reports only fully expendable nodes */
-	.flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE,
-};
+static struct shrinker *workingset_shadow_shrinker;
 
 /*
  * Our list_lru->lock is IRQ-safe as it nests inside the IRQ-safe
@@ -779,7 +774,7 @@  static int __init workingset_init(void)
 {
 	unsigned int timestamp_bits;
 	unsigned int max_order;
-	int ret;
+	int ret = -ENOMEM;
 
 	BUILD_BUG_ON(BITS_PER_LONG < EVICTION_SHIFT);
 	/*
@@ -796,17 +791,24 @@  static int __init workingset_init(void)
 	pr_info("workingset: timestamp_bits=%d max_order=%d bucket_order=%u\n",
 	       timestamp_bits, max_order, bucket_order);
 
-	ret = prealloc_shrinker(&workingset_shadow_shrinker, "mm-shadow");
-	if (ret)
+	workingset_shadow_shrinker = shrinker_alloc(SHRINKER_NUMA_AWARE |
+						    SHRINKER_MEMCG_AWARE,
+						    "mm-shadow");
+	if (!workingset_shadow_shrinker)
 		goto err;
+
 	ret = __list_lru_init(&shadow_nodes, true, &shadow_nodes_key,
-			      &workingset_shadow_shrinker);
+			      workingset_shadow_shrinker);
 	if (ret)
 		goto err_list_lru;
-	register_shrinker_prepared(&workingset_shadow_shrinker);
+
+	workingset_shadow_shrinker->count_objects = count_shadow_nodes;
+	workingset_shadow_shrinker->scan_objects = scan_shadow_nodes;
+
+	shrinker_register(workingset_shadow_shrinker);
 	return 0;
 err_list_lru:
-	free_prealloced_shrinker(&workingset_shadow_shrinker);
+	shrinker_free_non_registered(workingset_shadow_shrinker);
 err:
 	return ret;
 }