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Filename Latest commit message Latest commit date
Maciej Fijalkowski b4f4659843 ixgbe: xsk: change !netif_carrier_ok() handling in ixgbe_xmit_zc() 
commit 6c7273a266759d9d36f7c862149f248bcdeddc0f upstream.

Commit c685c69fba ("ixgbe: don't do any AF_XDP zero-copy transmit if
netif is not OK") addressed the ring transient state when
MEM_TYPE_XSK_BUFF_POOL was being configured which in turn caused the
interface to through down/up. Maurice reported that when carrier is not
ok and xsk_pool is present on ring pair, ksoftirqd will consume 100% CPU
cycles due to the constant NAPI rescheduling as ixgbe_poll() states that
there is still some work to be done.

To fix this, do not set work_done to false for a !netif_carrier_ok().

Fixes: c685c69fba ("ixgbe: don't do any AF_XDP zero-copy transmit if netif is not OK")
Reported-by: Maurice Baijens <maurice.baijens@ellips.com>
Tested-by: Maurice Baijens <maurice.baijens@ellips.com>
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-08 19:07:48 +01:00
arch ia64: ensure proper NUMA distance and possible map initialization 2022-03-08 19:07:48 +01:00
block block: Fix fsync always failed if once failed 2022-03-08 19:07:47 +01:00
certs
crypto
Documentation bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
drivers ixgbe: xsk: change !netif_carrier_ok() handling in ixgbe_xmit_zc() 2022-03-08 19:07:48 +01:00
fs cifs: fix double free race when mount fails in cifs_get_root() 2022-03-08 19:07:45 +01:00
include sched/topology: Make sched_init_numa() use a set for the deduplicating sort 2022-03-08 19:07:48 +01:00
init bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
ipc
kernel sched/topology: Fix sched_domain_topology_level alloc in sched_init_numa() 2022-03-08 19:07:48 +01:00
lib lib/iov_iter: initialize "flags" in new pipe_buffer 2022-02-23 11:59:59 +01:00
LICENSES
mm memblock: use kfree() to release kmalloced memblock regions 2022-03-02 11:41:18 +01:00
net mac80211: fix forwarded mesh frames AC & queue selection 2022-03-08 19:07:48 +01:00
samples
scripts kconfig: fix failing to generate auto.conf 2022-02-23 12:00:01 +01:00
security
sound ASoC: ops: Shift tested values in snd_soc_put_volsw() by +min 2022-03-08 19:07:46 +01:00
tools perf data: Fix double free in perf_session__delete() 2022-03-02 11:41:05 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.182 2022-03-02 11:41:18 +01:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.