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7d452516b6
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Eric Dumazet 7d452516b6 Revert "net: group sk_backlog and sk_receive_queue" 
This reverts commit 4effb335b5.

This was a benefit for UDP flood case, which was later greatly improved
with commits 6471658dc6 ("udp: use skb_attempt_defer_free()")
and b650bf0977 ("udp: remove busylock and add per NUMA queues").

Apparently blamed commit added a regression for RAW sockets, possibly
because they do not use the dual RX queue strategy that UDP has.

sock_queue_rcv_skb_reason() and RAW recvmsg() compete for sk_receive_buf
and sk_rmem_alloc changes, and them being in the same
cache line reduce performance.

Fixes: 4effb335b5 ("net: group sk_backlog and sk_receive_queue")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202509281326.f605b4eb-lkp@intel.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: David Ahern <dsahern@kernel.org>
Cc: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250929182112.824154-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-29 18:30:32 -07:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-25 11:00:59 -07:00
block vfs-6.17-rc6.fixes 2025-09-08 07:53:01 -07:00
certs
crypto This push fixes a NULL pointer dereference in ccp and a couple of 2025-09-19 09:58:21 -07:00
Documentation docs: networking: phy: clarify abbreviation "PAL" 2025-09-29 12:10:19 -07:00
drivers net: stmmac: Convert open-coded register polling to helper macro 2025-09-29 18:27:45 -07:00
fs for-6.17-rc7-tag 2025-09-24 11:09:09 -07:00
include Revert "net: group sk_backlog and sk_receive_queue" 2025-09-29 18:30:32 -07:00
init 20 hotfixes. 15 are cc:stable and the remainder address post-6.16 issues 2025-09-10 21:19:34 -07:00
io_uring Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-25 11:00:59 -07:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-25 11:00:59 -07:00
lib hardening fixes for v6.17-rc4 2025-08-31 08:56:45 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
net mptcp: minor move_skbs_to_msk() cleanup 2025-09-29 18:23:36 -07:00
rust Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
samples 15 hotfixes. 11 are cc:stable and the remainder address post-6.16 issues 2025-09-17 21:34:26 -07:00
scripts scripts/coccinelle: Find PTR_ERR() to %pe candidates 2025-09-26 12:26:41 -07:00
security + Features 2025-08-04 08:17:28 -07:00
sound ALSA: hda/realtek: Fix mute led for HP Laptop 15-dw4xx 2025-09-18 21:10:05 +02:00
tools selftests: mptcp: join: validate new laminar endp 2025-09-29 18:23:36 -07:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap linux-can-next-for-6.18-20250924 2025-09-26 14:46:59 -07:00
.pylintrc
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -07:00
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: add a sub-entry for the Qualcomm bluetooth driver 2025-09-27 11:37:00 -04:00
Makefile Linux 6.17-rc7 2025-09-21 15:08:52 -07:00
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 reStructuredText 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.