diff options
| -rw-r--r-- | drivers/iommu/iova.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c index b5de865ee50b..d59d0ea2fd21 100644 --- a/drivers/iommu/iova.c +++ b/drivers/iommu/iova.c @@ -590,6 +590,8 @@ struct iova_rcache { struct delayed_work work; }; +static struct kmem_cache *iova_magazine_cache; + unsigned long iova_rcache_range(void) { return PAGE_SIZE << (IOVA_RANGE_CACHE_MAX_SIZE - 1); @@ -599,7 +601,7 @@ static struct iova_magazine *iova_magazine_alloc(gfp_t flags) { struct iova_magazine *mag; - mag = kmalloc(sizeof(*mag), flags); + mag = kmem_cache_alloc(iova_magazine_cache, flags); if (mag) mag->size = 0; @@ -608,7 +610,7 @@ static struct iova_magazine *iova_magazine_alloc(gfp_t flags) static void iova_magazine_free(struct iova_magazine *mag) { - kfree(mag); + kmem_cache_free(iova_magazine_cache, mag); } static void @@ -953,6 +955,12 @@ int iova_cache_get(void) if (!iova_cache) goto out_err; + iova_magazine_cache = kmem_cache_create("iommu_iova_magazine", + sizeof(struct iova_magazine), + 0, SLAB_HWCACHE_ALIGN, NULL); + if (!iova_magazine_cache) + goto out_err; + err = cpuhp_setup_state_multi(CPUHP_IOMMU_IOVA_DEAD, "iommu/iova:dead", NULL, iova_cpuhp_dead); if (err) { @@ -968,6 +976,7 @@ int iova_cache_get(void) out_err: kmem_cache_destroy(iova_cache); + kmem_cache_destroy(iova_magazine_cache); mutex_unlock(&iova_cache_mutex); return err; } @@ -984,6 +993,7 @@ void iova_cache_put(void) if (!iova_cache_users) { cpuhp_remove_multi_state(CPUHP_IOMMU_IOVA_DEAD); kmem_cache_destroy(iova_cache); + kmem_cache_destroy(iova_magazine_cache); } mutex_unlock(&iova_cache_mutex); } |