linux-kernel - [PATCH v4 0/6] dma-buf: Check status of enable-signaling bit on debug

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Message-ID: <20220914164321.2156-1-Arvind.Yadav@amd.com>
Date:   Wed, 14 Sep 2022 22:13:15 +0530
From:   Arvind Yadav <Arvind.Yadav@....com>
To:     <Christian.Koenig@....com>, <andrey.grodzovsky@....com>,
        <shashank.sharma@....com>, <amaranath.somalapuram@....com>,
        <Arunpravin.PaneerSelvam@....com>, <sumit.semwal@...aro.org>,
        <gustavo@...ovan.org>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <linaro-mm-sig@...ts.linaro.org>, <linux-kernel@...r.kernel.org>
CC:     Arvind Yadav <Arvind.Yadav@....com>
Subject: [PATCH v4 0/6] dma-buf: Check status of enable-signaling bit on debug

Fence signaling must be enabled to make sure that
the dma_fence_is_signaled() function ever returns true.
Since drivers and implementations sometimes mess this up,
this ensures correct behaviour when DEBUG_WW_MUTEX_SLOWPATH
is used during debugging.
This should make any implementation bugs resulting in not
signaled fences much more obvious.

Arvind Yadav (6):
  [PATCH v4 1/6] dma-buf: Remove the signaled bit status check
  [PATCH v4 2/6] dma-buf: set signaling bit for the stub fence
  [PATCH v4 3/6] dma-buf: Enable signaling on fence for selftests
  [PATCH v4 4/6] dma-buf: dma_fence_wait must enable signaling
  [PATCH v4 5/6] drm/sched: Use parent fence instead of finished
  [PATCH v4 6/6] dma-buf: Check status of enable-signaling bit on debug

 drivers/dma-buf/Kconfig                |  7 +++++++
 drivers/dma-buf/dma-fence.c            | 16 ++++++++++------
 drivers/dma-buf/st-dma-fence-chain.c   |  4 ++++
 drivers/dma-buf/st-dma-fence-unwrap.c  | 22 ++++++++++++++++++++++
 drivers/dma-buf/st-dma-fence.c         | 16 ++++++++++++++++
 drivers/dma-buf/st-dma-resv.c          | 10 ++++++++++
 drivers/gpu/drm/scheduler/sched_main.c |  4 ++--
 include/linux/dma-fence.h              |  5 +++++
 8 files changed, 76 insertions(+), 8 deletions(-)

-- 
2.25.1