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David S. Miller f2e834694b Merge branch 'drop_monitor-Convert-to-use-devlink-tracepoint' Ido Schimmel says: ==================== drop_monitor: Convert to use devlink tracepoint Drop monitor is able to monitor both software and hardware originated drops. Software drops are monitored by having drop monitor register its probe on the 'kfree_skb' tracepoint. Hardware originated drops are monitored by having devlink call into drop monitor whenever it receives a dropped packet from the underlying hardware. This patch set converts drop monitor to monitor both software and hardware originated drops in the same way - by registering its probe on the relevant tracepoint. In addition to drop monitor being more consistent, it is now also possible to build drop monitor as module instead of as a builtin and still monitor hardware originated drops. Initially, CONFIG_NET_DEVLINK implied CONFIG_NET_DROP_MONITOR, but after commit `def2fbffe6` ("kconfig: allow symbols implied by y to become m") we can have CONFIG_NET_DEVLINK=y and CONFIG_NET_DROP_MONITOR=m and hardware originated drops will not be monitored. Patch set overview: Patch #1 adds a tracepoint in devlink for trap reports. Patch #2 prepares probe functions in drop monitor for the new tracepoint. Patch #3 converts drop monitor to use the new tracepoint. Patches #4-#6 perform cleanups after the conversion. Patch #7 adds a test case for drop monitor. Both software originated drops and hardware originated drops (using netdevsim) are tested. Tested: \| CONFIG_NET_DEVLINK \| CONFIG_NET_DROP_MONITOR \| Build \| SW drops \| HW drops \| \| -------------------\|-------------------------\|-------\|----------\|----------\| \| y \| y \| v \| v \| v \| \| y \| m \| v \| v \| v \| \| y \| n \| v \| x \| x \| \| n \| y \| v \| v \| x \| \| n \| m \| v \| v \| x \| \| n \| n \| v \| x \| x \| ==================== Signed-off-by: David S. Miller <davem@davemloft.net>		2020-09-30 18:01:27 -07:00
arch	net: mscc: ocelot: add definitions for VCAP ES0 keys, actions and target	2020-09-29 18:26:12 -07:00
block	- Fix a regression in bdev partition locking (Christoph)	2020-09-11 11:55:28 -07:00
certs	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2020-08-30 15:53:44 -07:00
Documentation	dt-binding: can: mcp251xfd: narrow down wildcards in device tree bindings to "microchip,mcp251xfd"	2020-09-30 11:22:26 +02:00
drivers	linux-can-next-for-5.10-20200930	2020-09-30 15:21:43 -07:00
fs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
include	drop_monitor: Filter control packets in drop monitor	2020-09-30 18:01:26 -07:00
init	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
ipc	ipc: adjust proc_ipc_sem_dointvec definition to match prototype	2020-09-05 12:14:29 -07:00
kernel	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-09-23 13:11:11 -07:00
lib	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
LICENSES	LICENSES: Rename other to deprecated	2019-05-03 06:34:32 -06:00
mm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
net	drop_monitor: Filter control packets in drop monitor	2020-09-30 18:01:26 -07:00
samples	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-09-23 13:11:11 -07:00
scripts	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-09-23 13:11:11 -07:00
security	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-22 16:45:34 -07:00
sound	sound fixes for 5.9-rc6	2020-09-18 11:38:08 -07:00
tools	selftests: net: Add drop monitor test	2020-09-30 18:01:26 -07:00
usr	Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-08-07 13:29:39 -07:00
virt	KVM: fix memory leak in kvm_io_bus_unregister_dev()	2020-09-11 13:15:11 -04:00
.clang-format	clang-format: Update with the latest for_each macro list	2020-09-01 12:53:42 +02:00
.cocciconfig
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	.gitignore: Add ZSTD-compressed files	2020-07-31 11:50:49 +02:00
.mailmap	mailmap: add older email addresses for Kees Cook	2020-09-19 13:13:38 -07:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Add Krzysztof Kozlowski to Samsung S3FWRN5 and remove Robert	2020-09-10 15:22:16 -07:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	drop_monitor: Convert to using devlink tracepoint	2020-09-30 18:01:26 -07:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-09-23 13:11:11 -07:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

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.