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Message-ID: <202505140631.FOWO8B5L-lkp@intel.com>
Date: Wed, 14 May 2025 06:49:42 +0800
From: kernel test robot <lkp@...el.com>
To: Byungchul Park <byungchul@...com>, linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
kernel_team@...ynix.com, torvalds@...ux-foundation.org,
damien.lemoal@...nsource.wdc.com, linux-ide@...r.kernel.org,
adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
mingo@...hat.com, peterz@...radead.org, will@...nel.org,
tglx@...utronix.de, rostedt@...dmis.org, joel@...lfernandes.org,
sashal@...nel.org, daniel.vetter@...ll.ch, duyuyang@...il.com,
johannes.berg@...el.com, tj@...nel.org, tytso@....edu,
willy@...radead.org, david@...morbit.com, amir73il@...il.com,
gregkh@...uxfoundation.org, kernel-team@....com, linux-mm@...ck.org,
akpm@...ux-foundation.org, mhocko@...nel.org, minchan@...nel.org,
hannes@...xchg.org, vdavydov.dev@...il.com
Subject: Re: [PATCH v15 33/43] dept: assign unique dept_key to each distinct
dma fence caller
Hi Byungchul,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 82f2b0b97b36ee3fcddf0f0780a9a0825d52fec3]
url: https://github.com/intel-lab-lkp/linux/commits/Byungchul-Park/llist-move-llist_-head-node-definition-to-types-h/20250513-181346
base: 82f2b0b97b36ee3fcddf0f0780a9a0825d52fec3
patch link: https://lore.kernel.org/r/20250513100730.12664-34-byungchul%40sk.com
patch subject: [PATCH v15 33/43] dept: assign unique dept_key to each distinct dma fence caller
config: arm-randconfig-002-20250514 (https://download.01.org/0day-ci/archive/20250514/202505140631.FOWO8B5L-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250514/202505140631.FOWO8B5L-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505140631.FOWO8B5L-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/dma-buf/dma-fence.c:503: warning: expecting prototype for dma_fence_wait_timeout(). Prototype was for __dma_fence_wait_timeout() instead
>> drivers/dma-buf/dma-fence.c:763: warning: expecting prototype for dma_fence_default_wait(). Prototype was for __dma_fence_default_wait() instead
>> drivers/dma-buf/dma-fence.c:853: warning: expecting prototype for dma_fence_wait_any_timeout(). Prototype was for __dma_fence_wait_any_timeout() instead
vim +503 drivers/dma-buf/dma-fence.c
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 482
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 483 /**
f54d1867005c33 drivers/dma-buf/dma-fence.c Chris Wilson 2016-10-25 484 * dma_fence_wait_timeout - sleep until the fence gets signaled
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 485 * or until timeout elapses
4dd3cdb281f7a3 drivers/dma-buf/dma-fence.c Simona Vetter 2018-07-04 486 * @fence: the fence to wait on
4dd3cdb281f7a3 drivers/dma-buf/dma-fence.c Simona Vetter 2018-07-04 487 * @intr: if true, do an interruptible wait
4dd3cdb281f7a3 drivers/dma-buf/dma-fence.c Simona Vetter 2018-07-04 488 * @timeout: timeout value in jiffies, or MAX_SCHEDULE_TIMEOUT
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 489 *
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 490 * Returns -ERESTARTSYS if interrupted, 0 if the wait timed out, or the
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 491 * remaining timeout in jiffies on success. Other error values may be
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 492 * returned on custom implementations.
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 493 *
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 494 * Performs a synchronous wait on this fence. It is assumed the caller
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 495 * directly or indirectly (buf-mgr between reservation and committing)
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 496 * holds a reference to the fence, otherwise the fence might be
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 497 * freed before return, resulting in undefined behavior.
4dd3cdb281f7a3 drivers/dma-buf/dma-fence.c Simona Vetter 2018-07-04 498 *
4dd3cdb281f7a3 drivers/dma-buf/dma-fence.c Simona Vetter 2018-07-04 499 * See also dma_fence_wait() and dma_fence_wait_any_timeout().
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 500 */
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 501 signed long
15fe92c1e1cf69 drivers/dma-buf/dma-fence.c Byungchul Park 2025-05-13 502 __dma_fence_wait_timeout(struct dma_fence *fence, bool intr, signed long timeout)
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 @503 {
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 504 signed long ret;
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 505
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 506 if (WARN_ON(timeout < 0))
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 507 return -EINVAL;
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 508
ef8255506f6682 drivers/dma-buf/dma-fence.c Simona Vetter 2020-05-19 509 might_sleep();
ef8255506f6682 drivers/dma-buf/dma-fence.c Simona Vetter 2020-05-19 510
5fbff813a4a328 drivers/dma-buf/dma-fence.c Simona Vetter 2020-07-07 511 __dma_fence_might_wait();
5fbff813a4a328 drivers/dma-buf/dma-fence.c Simona Vetter 2020-07-07 512
b96fb1e724ae68 drivers/dma-buf/dma-fence.c Arvind Yadav 2022-09-14 513 dma_fence_enable_sw_signaling(fence);
b96fb1e724ae68 drivers/dma-buf/dma-fence.c Arvind Yadav 2022-09-14 514
f54d1867005c33 drivers/dma-buf/dma-fence.c Chris Wilson 2016-10-25 515 trace_dma_fence_wait_start(fence);
418cc6ca06071e drivers/dma-buf/dma-fence.c Simona Vetter 2018-05-03 516 if (fence->ops->wait)
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 517 ret = fence->ops->wait(fence, intr, timeout);
418cc6ca06071e drivers/dma-buf/dma-fence.c Simona Vetter 2018-05-03 518 else
418cc6ca06071e drivers/dma-buf/dma-fence.c Simona Vetter 2018-05-03 519 ret = dma_fence_default_wait(fence, intr, timeout);
f54d1867005c33 drivers/dma-buf/dma-fence.c Chris Wilson 2016-10-25 520 trace_dma_fence_wait_end(fence);
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 521 return ret;
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 522 }
15fe92c1e1cf69 drivers/dma-buf/dma-fence.c Byungchul Park 2025-05-13 523 EXPORT_SYMBOL(__dma_fence_wait_timeout);
e941759c74a44d drivers/dma-buf/fence.c Maarten Lankhorst 2014-07-01 524
--
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