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Reliable Crypto Recovery Agency Providing Authentic And Dependable Recovery Services

by masoncaleb2a＠gmail.com

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1 month

Elite Crypto Recovery Agency With Accredited And Trusted Specialists

by Mata Marcus

1 month

Genuine Crypto Recovery Company With Proven Reliable Recovery Process

by florabenson93＠gmail.com

1 month

Proven Best Cryptocurrency Recovery Company Offering Elite Authorized Recovery Process

by codykayson983＠gmail.com

1 month

REACH OUT TO AN EXPERT LIKE SALVAGE ASSET RECOVERY FOR BTC SCAM RECOVERY

by nicofinley288＠gmail.com

Contact details Telegram 16592200206 Whats app +18476547096 Email→ Salvagefundsrecovery(a)rescueteam.com I run a small but growing workshop that manufactures custom metal components. A few months ago I decided to invest in a new piece of industrial machinery that would significantly boost our production capacity. After some research I found what seemed to be a reputable supplier based overseas. Their website looked professional, their representatives responded quickly to inquiries and the pricing was competitive. The only catch was that they required payment upfront and in Bitcoin.At first I was hesitant. I had never made such a large purchase using cryptocurrency, especially not from a foreign vendor. But after reviewing their documentation and checking online for reviews, none of which raised red flags, I decided to move forward. The total amount came to $21,000 in Bitcoin. I transferred the funds, confirmed the transaction with the supplier and was told the machinery would ship within ten business days.Then silence.Days turned into weeks. My emails and messages went unanswered. Phone calls went straight to voicemail. That was when I realized I had likely been scammed. It was a sinking feeling $21,000 gone with no clear path to recovery. My bank could not help and since the payment was in Bitcoin there was no chargeback option. I thought the money was lost for good.After researching my options I came across a service called Salvage Asset Recovery. They specialize in crypto transaction tracing and digital asset recovery. Skeptical but desperate I contacted them and provided all the transaction details and communication logs with the supplier. To my surprise they responded promptly and professionally, outlining what they could do.They began tracking the Bitcoin through blockchain analysis, following it through a complex chain of wallets and mixing services. Eventually they traced the funds to an account on a known cryptocurrency exchange. They worked with the exchange, providing evidence that the funds were tied to fraudulent activity. After a lengthy verification and recovery process they managed to freeze the wallet and recover the full $21,000.It took just over a month but every cent was returned to me.I was stunned. I had accepted the loss as a painful lesson but thanks to Salvage Asset Recovery’s expertise I got a second chance. I cannot recommend them enough to anyone who has fallen victim to crypto fraud. They were transparent, relentless and most importantly effective.

1 month

[PATCH 8/8] dma-buf: use inline lock for the dma-fence-chain

by Christian König

Using the inline lock is now the recommended way for dma_fence implementations. So use this approach for the framework's internal fences as well. Also saves about 4 bytes for the external spinlock. Signed-off-by: Christian König <christian.koenig(a)amd.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Reviewed-by: Philipp Stanner <phasta(a)kernel.org> Reviewed-by: Boris Brezillon <boris.brezillon(a)collabora.com> --- drivers/dma-buf/dma-fence-chain.c | 3 +-- include/linux/dma-fence-chain.h | 1 - 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c index a8a90acf4f34..a707792b6025 100644 --- a/drivers/dma-buf/dma-fence-chain.c +++ b/drivers/dma-buf/dma-fence-chain.c @@ -245,7 +245,6 @@ void dma_fence_chain_init(struct dma_fence_chain *chain, struct dma_fence_chain *prev_chain = to_dma_fence_chain(prev); uint64_t context; - spin_lock_init(&chain->lock); rcu_assign_pointer(chain->prev, prev); chain->fence = fence; chain->prev_seqno = 0; @@ -261,7 +260,7 @@ void dma_fence_chain_init(struct dma_fence_chain *chain, seqno = max(prev->seqno, seqno); } - dma_fence_init64(&chain->base, &dma_fence_chain_ops, &chain->lock, + dma_fence_init64(&chain->base, &dma_fence_chain_ops, NULL, context, seqno); /* diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h index 68c3c1e41014..d39ce7a2e599 100644 --- a/include/linux/dma-fence-chain.h +++ b/include/linux/dma-fence-chain.h @@ -46,7 +46,6 @@ struct dma_fence_chain { */ struct irq_work work; }; - spinlock_t lock; }; -- 2.43.0

1 month

[PATCH 7/8] dma-buf: use inline lock for the dma-fence-array

by Christian König

Using the inline lock is now the recommended way for dma_fence implementations. So use this approach for the framework's internal fences as well. Also saves about 4 bytes for the external spinlock. Signed-off-by: Christian König <christian.koenig(a)amd.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Reviewed-by: Philipp Stanner <phasta(a)kernel.org> Reviewed-by: Boris Brezillon <boris.brezillon(a)collabora.com> --- drivers/dma-buf/dma-fence-array.c | 5 ++--- include/linux/dma-fence-array.h | 1 - 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index 6657d4b30af9..c2119a8049fe 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -204,9 +204,8 @@ void dma_fence_array_init(struct dma_fence_array *array, array->num_fences = num_fences; - spin_lock_init(&array->lock); - dma_fence_init(&array->base, &dma_fence_array_ops, &array->lock, - context, seqno); + dma_fence_init(&array->base, &dma_fence_array_ops, NULL, context, + seqno); init_irq_work(&array->work, irq_dma_fence_array_work); atomic_set(&array->num_pending, signal_on_any ? 1 : num_fences); diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h index 079b3dec0a16..370b3d2bba37 100644 --- a/include/linux/dma-fence-array.h +++ b/include/linux/dma-fence-array.h @@ -38,7 +38,6 @@ struct dma_fence_array_cb { struct dma_fence_array { struct dma_fence base; - spinlock_t lock; unsigned num_fences; atomic_t num_pending; struct dma_fence **fences; -- 2.43.0

1 month

[PATCH 6/8] dma-buf: use inline lock for the stub fence v2

by Christian König

Using the inline lock is now the recommended way for dma_fence implementations. So use this approach for the framework's internal fences as well. Also saves about 4 bytes for the external spinlock. v2: drop unnecessary changes Signed-off-by: Christian König <christian.koenig(a)amd.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> Reviewed-by: Philipp Stanner <phasta(a)kernel.org> Reviewed-by: Boris Brezillon <boris.brezillon(a)collabora.com> --- drivers/dma-buf/dma-fence.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index 39f0a4d08a2d..133cb9033b2c 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -24,7 +24,6 @@ EXPORT_TRACEPOINT_SYMBOL(dma_fence_emit); EXPORT_TRACEPOINT_SYMBOL(dma_fence_enable_signal); EXPORT_TRACEPOINT_SYMBOL(dma_fence_signaled); -static DEFINE_SPINLOCK(dma_fence_stub_lock); static struct dma_fence dma_fence_stub; /* @@ -123,12 +122,9 @@ static const struct dma_fence_ops dma_fence_stub_ops = { static int __init dma_fence_init_stub(void) { - dma_fence_init(&dma_fence_stub, &dma_fence_stub_ops, - &dma_fence_stub_lock, 0, 0); - + dma_fence_init(&dma_fence_stub, &dma_fence_stub_ops, NULL, 0, 0); set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &dma_fence_stub.flags); - dma_fence_signal(&dma_fence_stub); return 0; } @@ -160,11 +156,7 @@ struct dma_fence *dma_fence_allocate_private_stub(ktime_t timestamp) if (fence == NULL) return NULL; - dma_fence_init(fence, - &dma_fence_stub_ops, - &dma_fence_stub_lock, - 0, 0); - + dma_fence_init(fence, &dma_fence_stub_ops, NULL, 0, 0); set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &fence->flags); -- 2.43.0

1 month

[PATCH 5/8] dma-buf/selftests: test RCU ops and inline lock v2

by Christian König

Drop the mock_fence and the kmem_cache, instead use the inline lock and test if the ops are properly dropped after signaling. v2: move the RCU check to the end of the test Signed-off-by: Christian König <christian.koenig(a)amd.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> --- drivers/dma-buf/st-dma-fence.c | 44 ++++++++-------------------------- 1 file changed, 10 insertions(+), 34 deletions(-) diff --git a/drivers/dma-buf/st-dma-fence.c b/drivers/dma-buf/st-dma-fence.c index 5d0d9abc6e21..0d9d524d79b6 100644 --- a/drivers/dma-buf/st-dma-fence.c +++ b/drivers/dma-buf/st-dma-fence.c @@ -14,43 +14,26 @@ #include "selftest.h" -static struct kmem_cache *slab_fences; - -static struct mock_fence { - struct dma_fence base; - struct spinlock lock; -} *to_mock_fence(struct dma_fence *f) { - return container_of(f, struct mock_fence, base); -} - static const char *mock_name(struct dma_fence *f) { return "mock"; } -static void mock_fence_release(struct dma_fence *f) -{ - kmem_cache_free(slab_fences, to_mock_fence(f)); -} - static const struct dma_fence_ops mock_ops = { .get_driver_name = mock_name, .get_timeline_name = mock_name, - .release = mock_fence_release, }; static struct dma_fence *mock_fence(void) { - struct mock_fence *f; + struct dma_fence *f; - f = kmem_cache_alloc(slab_fences, GFP_KERNEL); + f = kmalloc(sizeof(*f), GFP_KERNEL); if (!f) return NULL; - spin_lock_init(&f->lock); - dma_fence_init(&f->base, &mock_ops, &f->lock, 0, 0); - - return &f->base; + dma_fence_init(f, &mock_ops, NULL, 0, 0); + return f; } static int sanitycheck(void *arg) @@ -100,6 +83,11 @@ static int test_signaling(void *arg) goto err_free; } + if (rcu_dereference_protected(f->ops, true)) { + pr_err("Fence ops not cleared on signal\n"); + goto err_free; + } + err = 0; err_free: dma_fence_put(f); @@ -540,19 +528,7 @@ int dma_fence(void) SUBTEST(test_stub), SUBTEST(race_signal_callback), }; - int ret; pr_info("sizeof(dma_fence)=%zu\n", sizeof(struct dma_fence)); - - slab_fences = KMEM_CACHE(mock_fence, - SLAB_TYPESAFE_BY_RCU | - SLAB_HWCACHE_ALIGN); - if (!slab_fences) - return -ENOMEM; - - ret = subtests(tests, NULL); - - kmem_cache_destroy(slab_fences); - - return ret; + return subtests(tests, NULL); } -- 2.43.0

1 month

[PATCH 4/8] dma-buf: inline spinlock for fence protection v5

by Christian König

Implement per-fence spinlocks, allowing implementations to not give an external spinlock to protect the fence internal state. Instead a spinlock embedded into the fence structure itself is used in this case. Shared spinlocks have the problem that implementations need to guarantee that the lock lives at least as long all fences referencing them. Using a per-fence spinlock allows completely decoupling spinlock producer and consumer life times, simplifying the handling in most use cases. v2: improve naming, coverage and function documentation v3: fix one additional locking in the selftests v4: separate out some changes to make the patch smaller, fix one amdgpu crash found by CI systems v5: improve comments Signed-off-by: Christian König <christian.koenig(a)amd.com> Reviewed-by: Boris Brezillon <boris.brezillon(a)collabora.com> --- drivers/dma-buf/dma-fence.c | 21 ++++++++++++++++----- drivers/dma-buf/sync_debug.h | 2 +- drivers/gpu/drm/drm_crtc.c | 2 +- drivers/gpu/drm/drm_writeback.c | 2 +- drivers/gpu/drm/nouveau/nouveau_fence.c | 3 ++- drivers/gpu/drm/qxl/qxl_release.c | 3 ++- drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 3 ++- drivers/gpu/drm/xe/xe_hw_fence.c | 3 ++- include/linux/dma-fence.h | 19 +++++++++++++------ 9 files changed, 40 insertions(+), 18 deletions(-) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index bd4ec7e26dae..39f0a4d08a2d 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -343,7 +343,6 @@ void __dma_fence_might_wait(void) } #endif - /** * dma_fence_signal_timestamp_locked - signal completion of a fence * @fence: the fence to signal @@ -1068,7 +1067,6 @@ static void __dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, spinlock_t *lock, u64 context, u64 seqno, unsigned long flags) { - BUG_ON(!lock); BUG_ON(!ops || !ops->get_driver_name || !ops->get_timeline_name); kref_init(&fence->refcount); @@ -1080,10 +1078,15 @@ __dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, */ RCU_INIT_POINTER(fence->ops, ops); INIT_LIST_HEAD(&fence->cb_list); - fence->lock = lock; fence->context = context; fence->seqno = seqno; fence->flags = flags | BIT(DMA_FENCE_FLAG_INITIALIZED_BIT); + if (lock) { + fence->extern_lock = lock; + } else { + spin_lock_init(&fence->inline_lock); + fence->flags |= BIT(DMA_FENCE_FLAG_INLINE_LOCK_BIT); + } fence->error = 0; trace_dma_fence_init(fence); @@ -1093,7 +1096,7 @@ __dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, * dma_fence_init - Initialize a custom fence. * @fence: the fence to initialize * @ops: the dma_fence_ops for operations on this fence - * @lock: the irqsafe spinlock to use for locking this fence + * @lock: optional irqsafe spinlock to use for locking this fence * @context: the execution context this fence is run on * @seqno: a linear increasing sequence number for this context * @@ -1103,6 +1106,10 @@ __dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, * * context and seqno are used for easy comparison between fences, allowing * to check which fence is later by simply using dma_fence_later(). + * + * It is strongly discouraged to provide an external lock because this couples + * lock and fence life time. This is only allowed for legacy use cases when + * multiple fences need to be prevented from signaling out of order. */ void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, @@ -1116,7 +1123,7 @@ EXPORT_SYMBOL(dma_fence_init); * dma_fence_init64 - Initialize a custom fence with 64-bit seqno support. * @fence: the fence to initialize * @ops: the dma_fence_ops for operations on this fence - * @lock: the irqsafe spinlock to use for locking this fence + * @lock: optional irqsafe spinlock to use for locking this fence * @context: the execution context this fence is run on * @seqno: a linear increasing sequence number for this context * @@ -1126,6 +1133,10 @@ EXPORT_SYMBOL(dma_fence_init); * * Context and seqno are used for easy comparison between fences, allowing * to check which fence is later by simply using dma_fence_later(). + * + * It is strongly discouraged to provide an external lock because this couples + * lock and fence life time. This is only allowed for legacy use cases when + * multiple fences need to be prevented from signaling out of order. */ void dma_fence_init64(struct dma_fence *fence, const struct dma_fence_ops *ops, diff --git a/drivers/dma-buf/sync_debug.h b/drivers/dma-buf/sync_debug.h index 02af347293d0..c49324505b20 100644 --- a/drivers/dma-buf/sync_debug.h +++ b/drivers/dma-buf/sync_debug.h @@ -47,7 +47,7 @@ struct sync_timeline { static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence) { - return container_of(fence->lock, struct sync_timeline, lock); + return container_of(fence->extern_lock, struct sync_timeline, lock); } /** diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index a7797d260f1e..17472915842f 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -159,7 +159,7 @@ static const struct dma_fence_ops drm_crtc_fence_ops; static struct drm_crtc *fence_to_crtc(struct dma_fence *fence) { BUG_ON(fence->ops != &drm_crtc_fence_ops); - return container_of(fence->lock, struct drm_crtc, fence_lock); + return container_of(fence->extern_lock, struct drm_crtc, fence_lock); } static const char *drm_crtc_fence_get_driver_name(struct dma_fence *fence) diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c index 95b8a2e4bda6..624a4e8b6c99 100644 --- a/drivers/gpu/drm/drm_writeback.c +++ b/drivers/gpu/drm/drm_writeback.c @@ -81,7 +81,7 @@ * From userspace, this property will always read as zero. */ -#define fence_to_wb_connector(x) container_of(x->lock, \ +#define fence_to_wb_connector(x) container_of(x->extern_lock, \ struct drm_writeback_connector, \ fence_lock) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 4a193b7d6d9e..c282c94138b2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -41,7 +41,8 @@ static const struct dma_fence_ops nouveau_fence_ops_legacy; static inline struct nouveau_fence_chan * nouveau_fctx(struct nouveau_fence *fence) { - return container_of(fence->base.lock, struct nouveau_fence_chan, lock); + return container_of(fence->base.extern_lock, struct nouveau_fence_chan, + lock); } static bool diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 06b0b2aa7953..37d4ae0faf0d 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -62,7 +62,8 @@ static long qxl_fence_wait(struct dma_fence *fence, bool intr, struct qxl_device *qdev; unsigned long cur, end = jiffies + timeout; - qdev = container_of(fence->lock, struct qxl_device, release_lock); + qdev = container_of(fence->extern_lock, struct qxl_device, + release_lock); if (!wait_event_timeout(qdev->release_event, (dma_fence_is_signaled(fence) || diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c index 85795082fef9..d251eec57df9 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c @@ -47,7 +47,8 @@ struct vmw_event_fence_action { static struct vmw_fence_manager * fman_from_fence(struct vmw_fence_obj *fence) { - return container_of(fence->base.lock, struct vmw_fence_manager, lock); + return container_of(fence->base.extern_lock, struct vmw_fence_manager, + lock); } static void vmw_fence_obj_destroy(struct dma_fence *f) diff --git a/drivers/gpu/drm/xe/xe_hw_fence.c b/drivers/gpu/drm/xe/xe_hw_fence.c index ae8ed15b64c5..14720623ad00 100644 --- a/drivers/gpu/drm/xe/xe_hw_fence.c +++ b/drivers/gpu/drm/xe/xe_hw_fence.c @@ -124,7 +124,8 @@ static struct xe_hw_fence *to_xe_hw_fence(struct dma_fence *fence); static struct xe_hw_fence_irq *xe_hw_fence_irq(struct xe_hw_fence *fence) { - return container_of(fence->dma.lock, struct xe_hw_fence_irq, lock); + return container_of(fence->dma.extern_lock, struct xe_hw_fence_irq, + lock); } static const char *xe_hw_fence_get_driver_name(struct dma_fence *dma_fence) diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index 086324af96c9..9ed359e38d4e 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -34,7 +34,8 @@ struct seq_file; * @ops: dma_fence_ops associated with this fence * @rcu: used for releasing fence with kfree_rcu * @cb_list: list of all callbacks to call - * @lock: spin_lock_irqsave used for locking + * @extern_lock: external spin_lock_irqsave used for locking (deprecated) + * @inline_lock: alternative internal spin_lock_irqsave used for locking * @context: execution context this fence belongs to, returned by * dma_fence_context_alloc() * @seqno: the sequence number of this fence inside the execution context, @@ -49,6 +50,7 @@ struct seq_file; * of the time. * * DMA_FENCE_FLAG_INITIALIZED_BIT - fence was initialized + * DMA_FENCE_FLAG_INLINE_LOCK_BIT - use inline spinlock instead of external one * DMA_FENCE_FLAG_SIGNALED_BIT - fence is already signaled * DMA_FENCE_FLAG_TIMESTAMP_BIT - timestamp recorded for fence signaling * DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT - enable_signaling might have been called @@ -66,7 +68,10 @@ struct seq_file; * been completed, or never called at all. */ struct dma_fence { - spinlock_t *lock; + union { + spinlock_t *extern_lock; + spinlock_t inline_lock; + }; const struct dma_fence_ops __rcu *ops; /* * We clear the callback list on kref_put so that by the time we @@ -100,6 +105,7 @@ struct dma_fence { enum dma_fence_flag_bits { DMA_FENCE_FLAG_INITIALIZED_BIT, + DMA_FENCE_FLAG_INLINE_LOCK_BIT, DMA_FENCE_FLAG_SEQNO64_BIT, DMA_FENCE_FLAG_SIGNALED_BIT, DMA_FENCE_FLAG_TIMESTAMP_BIT, @@ -381,11 +387,12 @@ dma_fence_get_rcu_safe(struct dma_fence __rcu **fencep) * dma_fence_spinlock - return pointer to the spinlock protecting the fence * @fence: the fence to get the lock from * - * Return the pointer to the extern lock. + * Return either the pointer to the embedded or the external spin lock. */ static inline spinlock_t *dma_fence_spinlock(struct dma_fence *fence) { - return fence->lock; + return test_bit(DMA_FENCE_FLAG_INLINE_LOCK_BIT, &fence->flags) ? + &fence->inline_lock : fence->extern_lock; } /** @@ -396,7 +403,7 @@ static inline spinlock_t *dma_fence_spinlock(struct dma_fence *fence) * Lock the fence, preventing it from changing to the signaled state. */ #define dma_fence_lock_irqsave(fence, flags) \ - spin_lock_irqsave(fence->lock, flags) + spin_lock_irqsave(dma_fence_spinlock(fence), flags) /** * dma_fence_unlock_irqrestore - unlock the fence and irqrestore @@ -406,7 +413,7 @@ static inline spinlock_t *dma_fence_spinlock(struct dma_fence *fence) * Unlock the fence, allowing it to change it's state to signaled again. */ #define dma_fence_unlock_irqrestore(fence, flags) \ - spin_unlock_irqrestore(fence->lock, flags) + spin_unlock_irqrestore(dma_fence_spinlock(fence), flags) /** * dma_fence_assert_held - lockdep assertion that fence is locked -- 2.43.0

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