Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

CREDITS

@@ -1564,6 +1564,11 @@ W: http://www.carumba.com/
 D: bug toaster (A1 sauce makes all the difference)
 D: Random linux hacker
 
+N: James Hogan
+E: [email protected]
+D: Metag architecture maintainer
+D: TZ1090 SoC maintainer
+
 N: Tim Hockin
 E: [email protected]
 W: http://www.hockin.org/~thockin

Documentation/00-INDEX

@@ -66,8 +66,6 @@ backlight/
 	- directory with info on controlling backlights in flat panel displays
 bcache.txt
 	- Block-layer cache on fast SSDs to improve slow (raid) I/O performance.
-blackfin/
-	- directory with documentation for the Blackfin arch.
 block/
 	- info on the Block I/O (BIO) layer.
 blockdev/
@@ -114,8 +112,6 @@ cputopology.txt
 	- documentation on how CPU topology info is exported via sysfs.
 crc32.txt
 	- brief tutorial on CRC computation
-cris/
-	- directory with info about Linux on CRIS architecture.
 crypto/
 	- directory with info on the Crypto API.
 dcdbas.txt
@@ -172,8 +168,6 @@ fmc/
 	- information about the FMC bus abstraction
 fpga/
 	- FPGA Manager Core.
-frv/
-	- Fujitsu FR-V Linux documentation.
 futex-requeue-pi.txt
 	- info on requeueing of tasks from a non-PI futex to a PI futex
 gcc-plugins.txt
@@ -276,8 +270,6 @@ memory-hotplug.txt
 	- Hotpluggable memory support, how to use and current status.
 men-chameleon-bus.txt
 	- info on MEN chameleon bus.
-metag/
-	- directory with info about Linux on Meta architecture.
 mic/
 	- Intel Many Integrated Core (MIC) architecture device driver.
 mips/
@@ -286,8 +278,6 @@ misc-devices/
 	- directory with info about devices using the misc dev subsystem
 mmc/
 	- directory with info about the MMC subsystem
-mn10300/
-	- directory with info about the mn10300 architecture port
 mtd/
 	- directory with info about memory technology devices (flash)
 namespaces/

Documentation/admin-guide/README.rst

@@ -26,8 +26,8 @@ On what hardware does it run?
   Although originally developed first for 32-bit x86-based PCs (386 or higher),
   today Linux also runs on (at least) the Compaq Alpha AXP, Sun SPARC and
   UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, Cell,
-  IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64, AXIS CRIS,
-  Xtensa, Tilera TILE, ARC and Renesas M32R architectures.
+  IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64 Xtensa, and
+  ARC architectures.
 
   Linux is easily portable to most general-purpose 32- or 64-bit architectures
   as long as they have a paged memory management unit (PMMU) and a port of the

Documentation/admin-guide/kernel-parameters.rst

@@ -89,7 +89,6 @@ parameter is applicable::
 	APM	Advanced Power Management support is enabled.
 	ARM	ARM architecture is enabled.
 	AX25	Appropriate AX.25 support is enabled.
-	BLACKFIN Blackfin architecture is enabled.
 	CLK	Common clock infrastructure is enabled.
 	CMA	Contiguous Memory Area support is enabled.
 	DRM	Direct Rendering Management support is enabled.

Documentation/admin-guide/kernel-parameters.txt

@@ -1025,7 +1025,7 @@
 			address. The serial port must already be setup
 			and configured. Options are not yet supported.
 
-	earlyprintk=	[X86,SH,BLACKFIN,ARM,M68k,S390]
+	earlyprintk=	[X86,SH,ARM,M68k,S390]
 			earlyprintk=vga
 			earlyprintk=efi
 			earlyprintk=sclp
@@ -1347,10 +1347,6 @@
 			       If specified, z/VM IUCV HVC accepts connections
 			       from listed z/VM user IDs only.
 
-	hwthread_map=	[METAG] Comma-separated list of Linux cpu id to
-			        hardware thread id mappings.
-				Format: <cpu>:<hwthread>
-
 	keep_bootcon	[KNL]
 			Do not unregister boot console at start. This is only
 			useful for debugging when something happens in the window

Documentation/dev-tools/kmemleak.rst

@@ -8,7 +8,7 @@ with the difference that the orphan objects are not freed but only
 reported via /sys/kernel/debug/kmemleak. A similar method is used by the
 Valgrind tool (``memcheck --leak-check``) to detect the memory leaks in
 user-space applications.
-Kmemleak is supported on x86, arm, powerpc, sparc, sh, microblaze, ppc, mips, s390, metag and tile.
+Kmemleak is supported on x86, arm, powerpc, sparc, sh, microblaze, ppc, mips, s390 and tile.
 
 Usage
 -----