[PATCH v3 06/49] kvm: mmu: dynamically allocate the x86-mmu shrinker

[Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>]

Use new APIs to dynamically allocate the x86-mmu shrinker.

Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
 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 ec169f5c7dce..15fc92a24a26 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -6847,11 +6847,7 @@ 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)
 {
@@ -6984,10 +6980,16 @@ 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:
@@ -7009,7 +7011,7 @@ 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