[PATCH v5 02/45] kvm: mmu: dynamically allocate the x86-mmu shrinker
From: Qi Zheng
Date: Wed Aug 23 2023 - 23:44:55 EST
Use new APIs to dynamically allocate the x86-mmu shrinker.
Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Ingo Molnar <mingo@xxxxxxxxxx>
CC: Borislav Petkov <bp@xxxxxxxxx>
CC: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CC: kvm@xxxxxxxxxxxxxxx
CC: x86@xxxxxxxxxx
---
arch/x86/kvm/mmu/mmu.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index e1d011c67cc6..9252f2e7afbc 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -6796,11 +6796,7 @@ static unsigned long mmu_shrink_count(struct shrinker *shrink,
return percpu_counter_read_positive(&kvm_total_used_mmu_pages);
}
-static struct shrinker mmu_shrinker = {
- .count_objects = mmu_shrink_count,
- .scan_objects = mmu_shrink_scan,
- .seeks = DEFAULT_SEEKS * 10,
-};
+static struct shrinker *mmu_shrinker;
static void mmu_destroy_caches(void)
{
@@ -6933,10 +6929,16 @@ int kvm_mmu_vendor_module_init(void)
if (percpu_counter_init(&kvm_total_used_mmu_pages, 0, GFP_KERNEL))
goto out;
- ret = register_shrinker(&mmu_shrinker, "x86-mmu");
- if (ret)
+ mmu_shrinker = shrinker_alloc(0, "x86-mmu");
+ if (!mmu_shrinker)
goto out_shrinker;
+ mmu_shrinker->count_objects = mmu_shrink_count;
+ mmu_shrinker->scan_objects = mmu_shrink_scan;
+ mmu_shrinker->seeks = DEFAULT_SEEKS * 10;
+
+ shrinker_register(mmu_shrinker);
+
return 0;
out_shrinker:
@@ -6958,7 +6960,7 @@ void kvm_mmu_vendor_module_exit(void)
{
mmu_destroy_caches();
percpu_counter_destroy(&kvm_total_used_mmu_pages);
- unregister_shrinker(&mmu_shrinker);
+ shrinker_free(mmu_shrinker);
}
/*
--
2.30.2