From nobody Mon Feb 9 20:30:24 2026 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B409F27FD45; Tue, 13 May 2025 10:08:08 +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=1747130892; cv=none; b=OVIkrH3StDIXG7krVtCmAinNPXMLPQh7PJj2rF2W99ByJFsFiUVFtIbROk7oE02quZttWSR5TnIjezq7ihvgJLzaxdXgzz1f2hrZW3avoH4JMGMSBVuZcuj63qeqEyizzRFELSFZRx9RB9Oh8TrEpAxVJDnegHCgw5/dv81yNMk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130892; c=relaxed/simple; bh=LsYjF8JhNvst04EPgWY8e97ui1aABX9yUv7y65Wkm50=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=uE0HkpFf+bsZICFaalkJ6OYsNM1L56lKQhEVRm+w9nYPG9rlf4KqwNNOU3QbyJ0eyLPzNWS4saabNq/3mPI68j5n0v0Urs4xTc3z35I+1h0rLmVfmhJ7cXIMTLVugvmnoLFfAv817n45dHzC4x9nswLjA4x3/d4qyz97g04eg5k= 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-681ff7000002311f-ce-682319f1987d 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, yskelg@gmail.com, yunseong.kim@ericsson.com, yeoreum.yun@arm.com, netdev@vger.kernel.org, matthew.brost@intel.com, her0gyugyu@gmail.com Subject: [PATCH v15 33/43] dept: assign unique dept_key to each distinct dma fence caller Date: Tue, 13 May 2025 19:07:20 +0900 Message-Id: <20250513100730.12664-34-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250513100730.12664-1-byungchul@sk.com> References: <20250513100730.12664-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0yTZxTHfZ732mrNa+fkRY1KhZCAol28nA9qTMyyN0YTE5cYxVuVN7QT qmkBZQuGykUBIYjWRimsoFaEIlgw4hSGECqMgFWwAkNE4nQNt1htFQtqwfjl5Jf/P+d3vhyW kDuohaxGmyDqtKo4BS0lpaNzSlZ6gperVxd/mAfe92dIMFfZaHDerEBgqzVgcLf8As98Iwj8 HY8IMBmdCEpePieg1jGAoL7sFA1dr+ZCt3echjZjDg1pV6poeDw8iaH/YgGGCvt2eGF9TUJ7 fikGk5uGQlMaDoz/MUxYyxmwpobBUNllBiZfKqFtwEVBfV8kXCrup+F+fRsJjrohDF1/mWkY sH2hoN3RSoIvbxE4z+VSUDlWSsOwz0qA1TvOwJNGCwaHZQFUpweEme8+U/AwtxFD5tVbGLp7 7yFoODOIwW5z0dDsHcFQYzcS8Ol6C4KhvFEGMs5OMFBoyEOQk3GRhPT+teD/GLhc9F4Jhj+r SaiccqHNGwVbsQ0JzSPjhJBec1z45H1KC/U+Cyn8U8oLdy8/Z4T0hj5GsNgThZqyCOHKfTcW SjxeSrCXZ9GC3VPACNmj3VgY6+xkdizeI90QI8ZpkkTdqk0Hpeobvj+ONSlPuB4ayFQ0Fp6N JCzPreGH3a3Ed3b1e5hpprlwvqdnYiafzy3ja3JfU9lIyhKcazb/rKgXTRc/cLv5zFujM0xy YXxO82MyG7GsjFvHtz8J++ZcyldUN854JIF46nonOc1ybi2fb6kgp508d17Cp30sRN8WgvkH ZT1kPpJZ0KxyJNdok+JVmrg1UepkreZE1OGj8XYU+C5rymR0HfI4dzYhjkWKObJWd4haTqmS 9MnxTYhnCcV8meFOIJLFqJJ/F3VHD+gS40R9E1rEkoog2U++4zFyLlaVIB4RxWOi7nuLWcnC VLQ+NfjfzF8bi/asCOXGjCGrfj64+U1x0KBxid7fcW/TMuMH99l8WaQ1usj0oA+H+3uDWrQF 1oRLTm3O4hX+k1NbJVGfI8wnEw+ZL1wL3f8mdGJ9V6y5r/m/4GQ0sGVy0KusSskYzNqm3lv3 949Zp023M6h9u1rbd1GKWSlq3PF23W8KUq9WKSMInV71FUI3GwZZAwAA X-Brightmail-Tracker: H4sIAAAAAAAAAzWSa0hTcRjG+5+7q9nBRp0mUc5GYGUKKW90JawORVHR/UO56tTmZdVWlkXk coppml3MbrOlMc3NS1ugXWaykbUsM7VpsqxJRJIXMjeytJpFX15+PA/8ni8vg4eUkVJGpT4s aNSKJBklIkTrFqbP/To1XBnV4ogF31AWATeqLBQ0V5oRWO7pMOh5sgra/b0Ifr58hUNhQTOC W953ONxr6EJgLztNQevHYGjzDVDgKsihIL2kioLXX0Yw8Fy+gIHZuhbemz4R0JhfjEFhDwXX C9OxwPmMwbCpnAZTmhy6y67RMOKNBleXmwSnwUWCvXM2XC3yUPDI7iKgobYbg9YHNyjosvwm obHhGQH+vFBoPp9LQkV/MQVf/CYcTL4BGlrqjRg0GCdDtT5gzfz2i4SnufUYZN6+i0Hb24cI 6rI+YGC1uClw+noxsFkLcPhR+gRBd14fDRlnh2m4rstDkJNxmQC9JwZ+fg8sG4aiQXezmoCK UTdatoS3FFkQ7+wdwHm97Sj/w/eG4u1+I8E/L+b4+9fe0by+rpPmjdYjvK0sgi951IPxtwZ9 JG8tP0Px1sELNJ/d14bx/U1N9PppO0SL9gpJqhRBM29JvEh5x3/ioCP6mPupjkhD/bOyURDD sfM5t2eQHmOKncV1dAzjYyxhZ3C23E9kNhIxOOsez7Ub3qKxYhK7ncu82/eXCVbO5ThfE9mI YcRsLNfYIv/nnM6Zq+v/eoIC8WhpEzHGIWwMl280E/lIZETjypFEpU5JVqiSYiK1icpUtepY 5J4DyVYU+B/TyZHztWiodZUDsQySTRA/6wlThpCKFG1qsgNxDC6TiHU1gUi8V5F6XNAc2KU5 kiRoHSiUIWRTxKu3CvEh7H7FYSFREA4Kmv8txgRJ01BCcORSbFOcdP5nb16oY/OGKG0Jad+2 MkxteBGXWuuqjKuRnohSJPwqWeDNCF98yZry3vNxGDaNjqwplU61xSz7NrFofeLM4NyqrE5S /mBj+LTthx7b5UEnj3t3XqwRP8/f/d1Q0bLx6JWw0C0L9QZzx5zl5zqckvhTCfs6uwx1KyQy QqtUREfgGq3iDxGf1bk7AwAA 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 | 12 +++--- include/linux/dma-fence.h | 74 +++++++++++++++++++++++++++++-------- 2 files changed, 65 insertions(+), 21 deletions(-) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index a45e5416f2dd..5215ac4eecfb 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -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 @@ -520,7 +520,7 @@ dma_fence_wait_timeout(struct dma_fence *fence, bool in= tr, signed long timeout) trace_dma_fence_wait_end(fence); return ret; } -EXPORT_SYMBOL(dma_fence_wait_timeout); +EXPORT_SYMBOL(__dma_fence_wait_timeout); =20 /** * dma_fence_release - default release function for fences @@ -759,7 +759,7 @@ 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; @@ -808,7 +808,7 @@ 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, @@ -848,7 +848,7 @@ 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; @@ -916,7 +916,7 @@ 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 e7ad819962e3..d7dc7dcd213f 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -393,8 +393,22 @@ 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); @@ -609,12 +623,37 @@ 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 @@ -630,19 +669,24 @@ 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