From nobody Wed Dec 17 17:46:19 2025 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DE55430EF96; Thu, 2 Oct 2025 08:14:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759392847; cv=none; b=EdTlffe7vCKyRfrJbIjWD24W1U9BngPrYY8FSXHqzsipNSwYyTmIjW7bB7xMcC3ytkMvsQ5JSds6+aruTzqKPioVhwboxQ2SE7S6AhUZAKrFjrn2dwAwqCGBe/NDJnwsYoQacMrCjP5F6VAJXW/cqGYzezngzcEarrUob3Yz2z4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759392847; c=relaxed/simple; bh=ie7Z6O65nZEyytmhWplooZ/RfzjoEP4K1Lb9yqntV+o=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=C+suj5YHGyIbYx4rEjEvxFzLzMkWqGSHcpE+BLKcYhGdtL1k+m3igarCvMPRfhAAjNDOQmwgVudRy8lI8E5ZkedU5WmskYwlkHzR81PlKo1v/Z/xjFAVkKTOJ0yPPvQcBiq45KCrCsQX58YcEYPlyEKmtA9K+xoDkEqP4WFQxMs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-c2dff70000001609-65-68de3412b98e From: Byungchul Park To: linux-kernel@vger.kernel.org Cc: kernel_team@skhynix.com, torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, harry.yoo@oracle.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, yunseong.kim@ericsson.com, ysk@kzalloc.com, yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com, corbet@lwn.net, catalin.marinas@arm.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, sumit.semwal@linaro.org, gustavo@padovan.org, christian.koenig@amd.com, andi.shyti@kernel.org, arnd@arndb.de, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, rppt@kernel.org, surenb@google.com, mcgrof@kernel.org, petr.pavlu@suse.com, da.gomez@kernel.org, samitolvanen@google.com, paulmck@kernel.org, frederic@kernel.org, neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com, josh@joshtriplett.org, urezki@gmail.com, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang@linux.dev, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, chuck.lever@oracle.com, neil@brown.name, okorniev@redhat.com, Dai.Ngo@oracle.com, tom@talpey.com, trondmy@kernel.org, anna@kernel.org, kees@kernel.org, bigeasy@linutronix.de, clrkwllms@kernel.org, mark.rutland@arm.com, ada.coupriediaz@arm.com, kristina.martsenko@arm.com, wangkefeng.wang@huawei.com, broonie@kernel.org, kevin.brodsky@arm.com, dwmw@amazon.co.uk, shakeel.butt@linux.dev, ast@kernel.org, ziy@nvidia.com, yuzhao@google.com, baolin.wang@linux.alibaba.com, usamaarif642@gmail.com, joel.granados@kernel.org, richard.weiyang@gmail.com, geert+renesas@glider.be, tim.c.chen@linux.intel.com, linux@treblig.org, alexander.shishkin@linux.intel.com, lillian@star-ark.net, chenhuacai@kernel.org, francesco@valla.it, guoweikang.kernel@gmail.com, link@vivo.com, jpoimboe@kernel.org, masahiroy@kernel.org, brauner@kernel.org, thomas.weissschuh@linutronix.de, oleg@redhat.com, mjguzik@gmail.com, andrii@kernel.org, wangfushuai@baidu.com, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-i2c@vger.kernel.org, linux-arch@vger.kernel.org, linux-modules@vger.kernel.org, rcu@vger.kernel.org, linux-nfs@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: [PATCH v17 32/47] dept: assign unique dept_key to each distinct dma fence caller Date: Thu, 2 Oct 2025 17:12:32 +0900 Message-Id: <20251002081247.51255-33-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20251002081247.51255-1-byungchul@sk.com> References: <20251002081247.51255-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSbUxTZxTHfe597m1pbHJTiF5hkaUJmimy4Zg5i25xZB9ulhi36BdfEi1y Y7vRYlpF0JlQeRFdkY4IZK0oWGk6QGlaq0KoFordSMUVO6EpYBWhIC82U4pBUVZq/PY75/87 53w5QlIyRCULFaqjvFoly5PSIiyaXdm4KTHrsfwL0xLAgNaFITpXgSEUrUDw+q2RhLL2JQxz C0MCWHJ6ELTe0BLwyvqehmn3SwQRsw6BIWyMpSMTBAzOzyAwj70nYMx1BsHlK3Ya6mp8CCat sdJpOU3DuN5Bwr/RCA29Nb/RMNt/kYAXVhrqjdUISkxtNNTW2zC0P+kQQP/0IgHDtdUEtNh2 QMgcxlD3nAZj3SQBC+ZmAdw3DWNYfJoJnpYJAYxU1WC4PvsPBaG/yim4VfxEAK26MAkVHVEM tmcDFDiDG6Gx/CqGTmcvBs/tUQL8HRdp0FkdFPhcXgraJgIEeD1/Y+g1/ImhabCfAHvffRLm z6dAQD+O4NqLKzQ8dDUQoO0yYQg/Kie253Kvy85jrtl+k+BaL7Uibq6phOTK9DFyz0RIrtR+ nGvyztDcm+gjmvu9bxPXbhgRcKV3ggKuwXaMK+2ZpTi7ZQNn6nxO/Lhur2hbLp+nKODVn397 UCQPVF6gjox+XXj2xmm6GLVnnEMJQpbJYsf7HPgjTw3qqGWmmfVsILBALnMS8ylrrwzH+yTj /YQd6E9f5kRmD2trGY87mEljh18Z446Y2cJeC18gPuxMZVusrriTEOv7n3rjtyTMV2xZpDTm iGLO5QR2tHaI/DCwhu2yBLAeiRvQimYkUagKlDJFXlaGvEilKMw4lK+0odjLmU8t7ruNXvp2 dSNGiKQrxb60EbmEkhVoipTdiBWS0iTxQcuwXCLOlRWd4NX5B9TH8nhNN0oRYulq8eb547kS 5rDsKP8Lzx/h1R9TQpiQXIzqUh9nOH7NfntvTU56pf+bMYPzgSKS4jmwUbnb72gorJjKFq21 ZO/wKoN/TFU+/Gk6aed/BdWrDN8h1Wd9Pu3OkIn0zzvr3Tn5iSV6pmqpq8f8pfuHs1cntyYP ZfeE1gU1736e0e5PPadL4+9+vzbJTaafXC/YZ1aN4dptUHUoKMUauSxzA6nWyP4HRuiAZm4D AAA= X-Brightmail-Tracker: H4sIAAAAAAAAAzWSe0hTcRTH+93nHK0uy+imQbEwIdIKepweRATRJbIHhWV/lLNubjgfbD6y qHxsZWZmo01yWT5yiVtp0yITQ7TWY1kuy6ycpi0rH62HK8y5NY3+OXzO+X44nD+OABffJoME 8oRkXpkgVUgoISHcuiY7TLysW7ZE7ZoHHZlNBLhHcgi4VG2mIMdykYS2GyYEPe4cBL/HDDho 6n0EjGutNIyMvqPB12hFoLdrcTDXZWLws8ZLwWDLDwS6XicFhV8yCXAZ8xAU9Rto+PJgEwz3 NJDgc3zC4PWvIQRGpxcDZ9MpBOP6OLhSVkvBWOtzHAp1bQhKex04fK7xh3XWbgSNlVkUfCy4 hUO7cxq8dLsoeKw7Q8Gw/RIGX2soKMlqJKHYoEWQXV5Ngb7YQkD9+7s02Ac9GHTptRiYLBHQ Y+wnwFZQhvnv81s3Z4GhMBvzl88Y6K43YDBqrKLhaXkXAcaMEDC0tpPQV1lEg6d3KfhKEsFq +kSD45yOgBvDz8n1OsT91uQTXFXtbYzTvBinOPNlM+LG/mgRN1KRjXOaAn/bMuTCOXVtGldh G6K4P+5XFNf4q4TgnpSx3PnWMK6+yEFz6ntv6e2r9wrXHuQV8lReuXhdtFDWefYCmdS36vDp uiwqA9WH56IAAcssYwde55ETTDGhbGfnKD7Bgcw8tvZs/+QcZ2xz2A77ogmewUSxFtPHSYdg Qtiun4ZJR8SsYK/3X8D+7ZzLmmqaJp0A/7y910ZMsJhZzmpcaqwACUvQlCoUKE9IjZfKFcvD VXGy9AT54fADifEW5P8m4zHP+TtopH1TM2IESDJVZA9xyMSkNFWVHt+MWAEuCRRFV3bJxKKD 0vQjvDJxvzJFwauaUbCAkMwSbd7NR4uZWGkyH8fzSbzyf4oJAoIyUH7U5dmD72I33Fw3f2bq fl6WPBU2+HIPFb/91rS5w/PwSdDxgZ07vm9V2FY7d6kj9q6tDj40X4SH6o0nIvJUaZ7IxdO9 36/CyukfWk/uuY8aHlm+BR8tMtv6Nlrdu1Lyo7YtKD21sjJyjbbq2j5FSu6bRZYYb0zuM1eo d4vzx8CLi8USQiWTLl2IK1XSv193NrNJAwAA X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" dma fence can be used at various points in the code and it's very hard to distinguish dma fences between different usages. Using a single dept_key for all the dma fences could trigger false positive reports. Assign unique dept_key to each distinct dma fence wait to avoid false positive reports. Signed-off-by: Byungchul Park --- drivers/dma-buf/dma-fence.c | 18 ++++----- include/linux/dma-fence.h | 74 +++++++++++++++++++++++++++++-------- 2 files changed, 68 insertions(+), 24 deletions(-) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index 0a4b519e3351..df52a7ae336a 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -481,7 +481,7 @@ int dma_fence_signal(struct dma_fence *fence) EXPORT_SYMBOL(dma_fence_signal); =20 /** - * dma_fence_wait_timeout - sleep until the fence gets signaled + * __dma_fence_wait_timeout - sleep until the fence gets signaled * or until timeout elapses * @fence: the fence to wait on * @intr: if true, do an interruptible wait @@ -499,7 +499,7 @@ EXPORT_SYMBOL(dma_fence_signal); * See also dma_fence_wait() and dma_fence_wait_any_timeout(). */ signed long -dma_fence_wait_timeout(struct dma_fence *fence, bool intr, signed long tim= eout) +__dma_fence_wait_timeout(struct dma_fence *fence, bool intr, signed long t= imeout) { signed long ret; =20 @@ -528,7 +528,7 @@ dma_fence_wait_timeout(struct dma_fence *fence, bool in= tr, signed long timeout) } return ret; } -EXPORT_SYMBOL(dma_fence_wait_timeout); +EXPORT_SYMBOL(__dma_fence_wait_timeout); =20 /** * dma_fence_release - default release function for fences @@ -764,7 +764,7 @@ dma_fence_default_wait_cb(struct dma_fence *fence, stru= ct dma_fence_cb *cb) } =20 /** - * dma_fence_default_wait - default sleep until the fence gets signaled + * __dma_fence_default_wait - default sleep until the fence gets signaled * or until timeout elapses * @fence: the fence to wait on * @intr: if true, do an interruptible wait @@ -776,7 +776,7 @@ dma_fence_default_wait_cb(struct dma_fence *fence, stru= ct dma_fence_cb *cb) * functions taking a jiffies timeout. */ signed long -dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long tim= eout) +__dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long t= imeout) { struct default_wait_cb cb; unsigned long flags; @@ -825,7 +825,7 @@ dma_fence_default_wait(struct dma_fence *fence, bool in= tr, signed long timeout) spin_unlock_irqrestore(fence->lock, flags); return ret; } -EXPORT_SYMBOL(dma_fence_default_wait); +EXPORT_SYMBOL(__dma_fence_default_wait); =20 static bool dma_fence_test_signaled_any(struct dma_fence **fences, uint32_t count, @@ -845,7 +845,7 @@ dma_fence_test_signaled_any(struct dma_fence **fences, = uint32_t count, } =20 /** - * dma_fence_wait_any_timeout - sleep until any fence gets signaled + * __dma_fence_wait_any_timeout - sleep until any fence gets signaled * or until timeout elapses * @fences: array of fences to wait on * @count: number of fences to wait on @@ -865,7 +865,7 @@ dma_fence_test_signaled_any(struct dma_fence **fences, = uint32_t count, * See also dma_fence_wait() and dma_fence_wait_timeout(). */ signed long -dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count, +__dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count, bool intr, signed long timeout, uint32_t *idx) { struct default_wait_cb *cb; @@ -933,7 +933,7 @@ dma_fence_wait_any_timeout(struct dma_fence **fences, u= int32_t count, =20 return ret; } -EXPORT_SYMBOL(dma_fence_wait_any_timeout); +EXPORT_SYMBOL(__dma_fence_wait_any_timeout); =20 /** * DOC: deadline hints diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index 64639e104110..1062fbb637e5 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -369,8 +369,22 @@ int dma_fence_signal_locked(struct dma_fence *fence); int dma_fence_signal_timestamp(struct dma_fence *fence, ktime_t timestamp); int dma_fence_signal_timestamp_locked(struct dma_fence *fence, ktime_t timestamp); -signed long dma_fence_default_wait(struct dma_fence *fence, +signed long __dma_fence_default_wait(struct dma_fence *fence, bool intr, signed long timeout); + +/* + * Associate every caller with its own dept map. + */ +#define dma_fence_default_wait(f, intr, t) \ +({ \ + signed long __ret; \ + \ + sdt_might_sleep_start_timeout(NULL, t); \ + __ret =3D __dma_fence_default_wait(f, intr, t); \ + sdt_might_sleep_end(); \ + __ret; \ +}) + int dma_fence_add_callback(struct dma_fence *fence, struct dma_fence_cb *cb, dma_fence_func_t func); @@ -607,12 +621,37 @@ static inline ktime_t dma_fence_timestamp(struct dma_= fence *fence) return fence->timestamp; } =20 -signed long dma_fence_wait_timeout(struct dma_fence *, +signed long __dma_fence_wait_timeout(struct dma_fence *, bool intr, signed long timeout); -signed long dma_fence_wait_any_timeout(struct dma_fence **fences, +signed long __dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count, bool intr, signed long timeout, uint32_t *idx); +/* + * Associate every caller with its own dept map. + */ +#define dma_fence_wait_timeout(f, intr, t) \ +({ \ + signed long __ret; \ + \ + sdt_might_sleep_start_timeout(NULL, t); \ + __ret =3D __dma_fence_wait_timeout(f, intr, t); \ + sdt_might_sleep_end(); \ + __ret; \ +}) + +/* + * Associate every caller with its own dept map. + */ +#define dma_fence_wait_any_timeout(fpp, count, intr, t, idx) \ +({ \ + signed long __ret; \ + \ + sdt_might_sleep_start_timeout(NULL, t); \ + __ret =3D __dma_fence_wait_any_timeout(fpp, count, intr, t, idx); \ + sdt_might_sleep_end(); \ + __ret; \ +}) =20 /** * dma_fence_wait - sleep until the fence gets signaled @@ -628,19 +667,24 @@ signed long dma_fence_wait_any_timeout(struct dma_fen= ce **fences, * fence might be freed before return, resulting in undefined behavior. * * See also dma_fence_wait_timeout() and dma_fence_wait_any_timeout(). + * + * Associate every caller with its own dept map. */ -static inline signed long dma_fence_wait(struct dma_fence *fence, bool int= r) -{ - signed long ret; - - /* Since dma_fence_wait_timeout cannot timeout with - * MAX_SCHEDULE_TIMEOUT, only valid return values are - * -ERESTARTSYS and MAX_SCHEDULE_TIMEOUT. - */ - ret =3D dma_fence_wait_timeout(fence, intr, MAX_SCHEDULE_TIMEOUT); - - return ret < 0 ? ret : 0; -} +#define dma_fence_wait(f, intr) \ +({ \ + signed long __ret; \ + \ + sdt_might_sleep_start_timeout(NULL, MAX_SCHEDULE_TIMEOUT); \ + __ret =3D __dma_fence_wait_timeout(f, intr, MAX_SCHEDULE_TIMEOUT);\ + sdt_might_sleep_end(); \ + \ + /* \ + * Since dma_fence_wait_timeout cannot timeout with \ + * MAX_SCHEDULE_TIMEOUT, only valid return values are \ + * -ERESTARTSYS and MAX_SCHEDULE_TIMEOUT. \ + */ \ + __ret < 0 ? __ret : 0; \ +}) =20 void dma_fence_set_deadline(struct dma_fence *fence, ktime_t deadline); =20 --=20 2.17.1