linux/arch
Linus Torvalds e070355664 Modules updates for v5.4
Summary of modules changes for the 5.4 merge window:
 
 - Introduce exported symbol namespaces.
 
   This new feature allows subsystem maintainers to partition and
   categorize their exported symbols into explicit namespaces. Module
   authors are now required to import the namespaces they need.
 
   Some of the main motivations of this feature include: allowing kernel
   developers to better manage the export surface, allow subsystem
   maintainers to explicitly state that usage of some exported symbols
   should only be limited to certain users (think: inter-module or
   inter-driver symbols, debugging symbols, etc), as well as more easily
   limiting the availability of namespaced symbols to other parts of the
   kernel. With the module import requirement, it is also easier to spot
   the misuse of exported symbols during patch review. Two new macros are
   introduced: EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL(). The API is
   thoroughly documented in Documentation/kbuild/namespaces.rst.
 
 - Some small code and kbuild cleanups here and there.
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Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules updates from Jessica Yu:
 "The main bulk of this pull request introduces a new exported symbol
  namespaces feature. The number of exported symbols is increasingly
  growing with each release (we're at about 31k exports as of 5.3-rc7)
  and we currently have no way of visualizing how these symbols are
  "clustered" or making sense of this huge export surface.

  Namespacing exported symbols allows kernel developers to more
  explicitly partition and categorize exported symbols, as well as more
  easily limiting the availability of namespaced symbols to other parts
  of the kernel. For starters, we have introduced the USB_STORAGE
  namespace to demonstrate the API's usage. I have briefly summarized
  the feature and its main motivations in the tag below.

  Summary:

   - Introduce exported symbol namespaces.

     This new feature allows subsystem maintainers to partition and
     categorize their exported symbols into explicit namespaces. Module
     authors are now required to import the namespaces they need.

     Some of the main motivations of this feature include: allowing
     kernel developers to better manage the export surface, allow
     subsystem maintainers to explicitly state that usage of some
     exported symbols should only be limited to certain users (think:
     inter-module or inter-driver symbols, debugging symbols, etc), as
     well as more easily limiting the availability of namespaced symbols
     to other parts of the kernel.

     With the module import requirement, it is also easier to spot the
     misuse of exported symbols during patch review.

     Two new macros are introduced: EXPORT_SYMBOL_NS() and
     EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
     Documentation/kbuild/namespaces.rst.

   - Some small code and kbuild cleanups here and there"

* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Remove leftover '#undef' from export header
  module: remove unneeded casts in cmp_name()
  module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
  module: remove redundant 'depends on MODULES'
  module: Fix link failure due to invalid relocation on namespace offset
  usb-storage: export symbols in USB_STORAGE namespace
  usb-storage: remove single-use define for debugging
  docs: Add documentation for Symbol Namespaces
  scripts: Coccinelle script for namespace dependencies.
  modpost: add support for generating namespace dependencies
  export: allow definition default namespaces in Makefiles or sources
  module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
  modpost: add support for symbol namespaces
  module: add support for symbol namespaces.
  export: explicitly align struct kernel_symbol
  module: support reading multiple values per modinfo tag
2019-09-22 10:34:46 -07:00
..
alpha Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
arc Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
arm ARM updates for 5.4-rc1: 2019-09-22 09:39:09 -07:00
arm64 SCSI misc on 20190919 2019-09-21 10:50:15 -07:00
c6x dma-mapping: remove CONFIG_ARCH_NO_COHERENT_DMA_MMAP 2019-09-04 11:13:18 +02:00
csky hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
h8300
hexagon
ia64 Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
m68k Modules updates for v5.4 2019-09-22 10:34:46 -07:00
microblaze dma-mapping: remove CONFIG_ARCH_NO_COHERENT_DMA_MMAP 2019-09-04 11:13:18 +02:00
mips Main MIPS changes for v5.4: 2019-09-22 09:30:30 -07:00
nds32 dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
nios2
openrisc hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
parisc Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
powerpc hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
riscv Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
s390 hmm related patches for 5.4 2019-09-21 10:07:42 -07:00
sh dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
sparc Kbuild updates for v5.4 2019-09-20 08:36:47 -07:00
um This pull request contains the following changes for UML: 2019-09-21 11:07:02 -07:00
unicore32 dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
x86 This pull request contains the following changes for UML: 2019-09-21 11:07:02 -07:00
xtensa dma-mapping updates for 5.4: 2019-09-19 13:27:23 -07:00
.gitignore
Kconfig powerpc updates for 5.4 2019-09-20 11:48:06 -07:00