Author: Park Ju Hyung <qkrwngud825@gmail.com>
Date:   Thu Jul 11 03:08:01 2019 +0900

    TMP

    Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>

diff --git a/drivers/gpu/drm/msm/sde/sde_fence.c b/drivers/gpu/drm/msm/sde/sde_fence.c
index 8ffbb98a03fc6..9c9d0b653dd9e 100644
--- a/drivers/gpu/drm/msm/sde/sde_fence.c
+++ b/drivers/gpu/drm/msm/sde/sde_fence.c
@@ -18,6 +18,8 @@

 #define TIMELINE_VAL_LENGTH        128

+static struct kmem_cache *kmem_fence_pool;
+
 void *sde_sync_get(uint64_t fd)
 {
    /* force signed compare, fdget accepts an int argument */
@@ -140,7 +142,7 @@ static void sde_fence_release(struct fence *fence)

    if (fence) {
        f = to_sde_fence(fence);
-       kfree(f);
+       kmem_cache_free(kmem_fence_pool, f);
    }
 }

@@ -193,7 +195,7 @@ static int _sde_fence_create_fd(void *fence_ctx, uint32_t val)
        goto exit;
    }

-   sde_fence = kzalloc(sizeof(*sde_fence), GFP_KERNEL);
+   sde_fence = kmem_cache_zalloc(kmem_fence_pool, GFP_KERNEL);
    if (!sde_fence)
        return -ENOMEM;

@@ -241,6 +243,9 @@ int sde_fence_init(struct sde_fence_context *ctx,
        SDE_ERROR("invalid argument(s)\n");
        return -EINVAL;
    }
+
+   kmem_fence_pool = KMEM_CACHE(sde_fence, SLAB_HWCACHE_ALIGN | SLAB_PANIC);
+
    memset(ctx, 0, sizeof(*ctx));

    strlcpy(ctx->name, name, ARRAY_SIZE(ctx->name));
@@ -263,6 +268,8 @@ void sde_fence_deinit(struct sde_fence_context *ctx)
    }

    kref_put(&ctx->kref, sde_fence_destroy);
+
+   kmem_cache_destroy(kmem_fence_pool);
 }

 void sde_fence_prepare(struct sde_fence_context *ctx)