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  1. 12 7月, 2018 1 次提交
  3. 04 7月, 2018 1 次提交
  5. 02 7月, 2018 1 次提交
  7. 29 6月, 2018 2 次提交
    • D
      net: ethernet: stmmac: dwmac-rk: Add GMAC support for px30 · 23c94d63
      由 David Wu 提交于 
      Add constants and callback functions for the dwmac on px30 Soc.
The base structure is the same, but registers and the bits in
them are moved slightly, and add the clk_mac_speed for selecting
mac speed.
Signed-off-by: NDavid Wu <david.wu@rock-chips.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      23c94d63
    • L
      Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL · a11e1d43
      由 Linus Torvalds 提交于 
      The poll() changes were not well thought out, and completely
unexplained.  They also caused a huge performance regression, because
"->poll()" was no longer a trivial file operation that just called down
to the underlying file operations, but instead did at least two indirect
calls.

Indirect calls are sadly slow now with the Spectre mitigation, but the
performance problem could at least be largely mitigated by changing the
"->get_poll_head()" operation to just have a per-file-descriptor pointer
to the poll head instead.  That gets rid of one of the new indirections.

But that doesn't fix the new complexity that is completely unwarranted
for the regular case.  The (undocumented) reason for the poll() changes
was some alleged AIO poll race fixing, but we don't make the common case
slower and more complex for some uncommon special case, so this all
really needs way more explanations and most likely a fundamental
redesign.

[ This revert is a revert of about 30 different commits, not reverted
  individually because that would just be unnecessarily messy  - Linus ]

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a11e1d43
  9. 28 6月, 2018 1 次提交
    • F
      skbuff: preserve sock reference when scrubbing the skb. · 9c4c3252
      由 Flavio Leitner 提交于 
      The sock reference is lost when scrubbing the packet and that breaks
TSQ (TCP Small Queues) and XPS (Transmit Packet Steering) causing
performance impacts of about 50% in a single TCP stream when crossing
network namespaces.

XPS breaks because the queue mapping stored in the socket is not
available, so another random queue might be selected when the stack
needs to transmit something like a TCP ACK, or TCP Retransmissions.
That causes packet re-ordering and/or performance issues.

TSQ breaks because it orphans the packet while it is still in the
host, so packets are queued contributing to the buffer bloat problem.

Preserving the sock reference fixes both issues. The socket is
orphaned anyways in the receiving path before any relevant action
and on TX side the netfilter checks if the reference is local before
use it.
Signed-off-by: NFlavio Leitner <fbl@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9c4c3252
  11. 27 6月, 2018 2 次提交
  13. 26 6月, 2018 1 次提交
  15. 25 6月, 2018 1 次提交
  17. 24 6月, 2018 1 次提交
  19. 23 6月, 2018 4 次提交
  21. 22 6月, 2018 2 次提交
  23. 21 6月, 2018 1 次提交
  25. 18 6月, 2018 2 次提交
  27. 16 6月, 2018 12 次提交
  29. 15 6月, 2018 7 次提交
  31. 14 6月, 2018 1 次提交
    • C
      dma-mapping: move all DMA mapping code to kernel/dma · cf65a0f6
      由 Christoph Hellwig 提交于 
      Currently the code is split over various files with dma- prefixes in the
lib/ and drives/base directories, and the number of files keeps growing.
Move them into a single directory to keep the code together and remove
the file name prefixes.  To match the irq infrastructure this directory
is placed under the kernel/ directory.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
      cf65a0f6