From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Adam Wallis <awallis@codeaurora.org>
Cc: Mathias Nyman <mathias.nyman@intel.com>,
linux-usb@vger.kernel.org, timur@codeaurora.org
Subject: usb: xhci: force all memory allocations to node
Date: Tue, 15 May 2018 17:07:37 +0200 [thread overview]
Message-ID: <20180515150737.GA23227@kroah.com> (raw)
On Tue, May 15, 2018 at 09:53:57AM -0400, Adam Wallis wrote:
> The xhci driver forces DMA memory to be node aware, however, there are
> several ring-related memory allocations that are not memory node aware.
> This patch resolves those *alloc functions to be allocated on the proper
> memory node.
Does this really do anything? Given the speed of USB3 at the moment,
does fixing the memory to the node the PCI device is on show any
measurable speedups? Last I remember about NUMA systems, it wasn't
always a win depending on where the irq came in from, right?
thanks,
greg k-h
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next reply other threads:[~2018-05-15 15:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-15 15:07 Greg Kroah-Hartman [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-05-22 7:35 usb: xhci: force all memory allocations to node Mathias Nyman
2018-05-21 16:42 Adam Wallis
2018-05-21 13:53 Mathias Nyman
2018-05-21 12:56 Adam Wallis
2018-05-16 6:02 Greg Kroah-Hartman
2018-05-15 20:51 Adam Wallis
2018-05-15 13:53 Adam Wallis
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