From: Vinod Koul <vkoul@kernel.org>
To: Dave Jiang <dave.jiang@intel.com>
Cc: Tony Luck <tony.luck@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
dmaengine@vger.kernel.org
Subject: Re: [PATCH v2] dmaengine: idxd: add work queue drain support
Date: Thu, 2 Jul 2020 19:07:08 +0530 [thread overview]
Message-ID: <20200702133708.GG273932@vkoul-mobl> (raw)
In-Reply-To: <159319502515.69593.13451647706946040301.stgit@djiang5-desk3.ch.intel.com>
On 26-06-20, 11:11, Dave Jiang wrote:
> Add wq drain support. When a wq is being released, it needs to wait for
> all in-flight operation to complete. A device control function
> idxd_wq_drain() has been added to facilitate this. A wq drain call
> is added to the char dev on release to make sure all user operations are
> complete. A wq drain is also added before the wq is being disabled.
>
> A drain command can take an unpredictable period of time. Interrupt support
> for device commands is added to allow waiting on the command to
> finish. If a previous command is in progress, the new submitter can block
> until the current command is finished before proceeding. The interrupt
> based submission will submit the command and then wait until a command
> completion interrupt happens to complete. All commands are moved to the
> interrupt based command submission except for the device reset during
> probe, which will be polled.
Applied, thanks
--
~Vinod
prev parent reply other threads:[~2020-07-02 13:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-26 18:11 [PATCH v2] dmaengine: idxd: add work queue drain support Dave Jiang
2020-07-02 13:37 ` Vinod Koul [this message]
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