Re: [PATCH v2 17/47] rcu: dynamically allocate the rcu-lazy shrinker

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On 2023/7/26 15:04, Muchun Song wrote:


On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> wrote:

Use new APIs to dynamically allocate the rcu-lazy shrinker.

Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
---
kernel/rcu/tree_nocb.h | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 43229d2b0c44..919f17561733 100644
--- a/kernel/rcu/tree_nocb.h
+++ b/kernel/rcu/tree_nocb.h
@@ -1397,12 +1397,7 @@ lazy_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
return count ? count : SHRINK_STOP;
}

-static struct shrinker lazy_rcu_shrinker = {
-	.count_objects = lazy_rcu_shrink_count,
-	.scan_objects = lazy_rcu_shrink_scan,
-	.batch = 0,
-	.seeks = DEFAULT_SEEKS,
-};
+static struct shrinker *lazy_rcu_shrinker;

Seems there is no users of this variable, maybe we could drop
this.

Yeah, will change it to a local variable. And the patch #15 is
the same.





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