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- unicore32 and hexagon both have very outdated gcc releases, but the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
...
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 4f7b3a1..00eeff9 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -165,7 +165,7 @@
config DEBUG_INFO_SPLIT
bool "Produce split debuginfo in .dwo files"
- depends on DEBUG_INFO && !FRV
+ depends on DEBUG_INFO
help
Generate debug info into separate .dwo files. This significantly
reduces the build directory size for builds with DEBUG_INFO,
@@ -354,10 +354,7 @@
config FRAME_POINTER
bool "Compile the kernel with frame pointers"
- depends on DEBUG_KERNEL && \
- (CRIS || M68K || FRV || UML || \
- SUPERH || BLACKFIN || MN10300 || METAG) || \
- ARCH_WANT_FRAME_POINTERS
+ depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS
default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
help
If you say Y here the resulting kernel image will be slightly
@@ -1174,7 +1171,7 @@
bool
depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
select STACKTRACE
- select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE && !ARC && !SCORE && !X86
+ select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 && !MICROBLAZE && !ARC && !X86
select KALLSYMS
select KALLSYMS_ALL
@@ -1585,7 +1582,7 @@
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
- select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !SCORE && !X86
+ select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC && !X86
help
Provide stacktrace filter for fault-injection capabilities
@@ -1983,7 +1980,7 @@
bool "Filter access to /dev/mem"
depends on MMU && DEVMEM
depends on ARCH_HAS_DEVMEM_IS_ALLOWED
- default y if TILE || PPC || X86 || ARM64
+ default y if PPC || X86 || ARM64
---help---
If this option is disabled, you allow userspace (root) access to all
of memory, including kernel and userspace memory. Accidental
diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
index 4add700d..44d6b46 100644
--- a/lib/raid6/Makefile
+++ b/lib/raid6/Makefile
@@ -7,7 +7,6 @@
raid6_pq-$(CONFIG_X86) += recov_ssse3.o recov_avx2.o mmx.o sse1.o sse2.o avx2.o avx512.o recov_avx512.o
raid6_pq-$(CONFIG_ALTIVEC) += altivec1.o altivec2.o altivec4.o altivec8.o
raid6_pq-$(CONFIG_KERNEL_MODE_NEON) += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
-raid6_pq-$(CONFIG_TILEGX) += tilegx8.o
raid6_pq-$(CONFIG_S390) += s390vx8.o recov_s390xc.o
hostprogs-y += mktables
@@ -115,11 +114,6 @@
$(obj)/neon8.c: $(src)/neon.uc $(src)/unroll.awk FORCE
$(call if_changed,unroll)
-targets += tilegx8.c
-$(obj)/tilegx8.c: UNROLL := 8
-$(obj)/tilegx8.c: $(src)/tilegx.uc $(src)/unroll.awk FORCE
- $(call if_changed,unroll)
-
targets += s390vx8.c
$(obj)/s390vx8.c: UNROLL := 8
$(obj)/s390vx8.c: $(src)/s390vx.uc $(src)/unroll.awk FORCE
diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
index 4769947..c65aa80 100644
--- a/lib/raid6/algos.c
+++ b/lib/raid6/algos.c
@@ -75,9 +75,6 @@
&raid6_altivec4,
&raid6_altivec8,
#endif
-#if defined(CONFIG_TILEGX)
- &raid6_tilegx8,
-#endif
#if defined(CONFIG_S390)
&raid6_s390vx8,
#endif
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index be1010b..fabc477 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -51,9 +51,6 @@
OBJS += altivec1.o altivec2.o altivec4.o altivec8.o
endif
endif
-ifeq ($(ARCH),tilegx)
-OBJS += tilegx8.o
-endif
.c.o:
$(CC) $(CFLAGS) -c -o $@ $<
@@ -116,15 +113,11 @@
int32.c: int.uc ../unroll.awk
$(AWK) ../unroll.awk -vN=32 < int.uc > $@
-tilegx8.c: tilegx.uc ../unroll.awk
- $(AWK) ../unroll.awk -vN=8 < tilegx.uc > $@
-
tables.c: mktables
./mktables > tables.c
clean:
rm -f *.o *.a mktables mktables.c *.uc int*.c altivec*.c neon*.c tables.c raid6test
- rm -f tilegx*.c
spotless: clean
rm -f *~
diff --git a/lib/raid6/tilegx.uc b/lib/raid6/tilegx.uc
deleted file mode 100644
index 2dd291a..0000000
--- a/lib/raid6/tilegx.uc
+++ /dev/null
@@ -1,87 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright 2002 H. Peter Anvin - All Rights Reserved
- * Copyright 2012 Tilera Corporation - All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
- * Boston MA 02111-1307, USA; either version 2 of the License, or
- * (at your option) any later version; incorporated herein by reference.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * tilegx$#.c
- *
- * $#-way unrolled TILE-Gx SIMD for RAID-6 math.
- *
- * This file is postprocessed using unroll.awk.
- *
- */
-
-#include <linux/raid/pq.h>
-
-/* Create 8 byte copies of constant byte */
-# define NBYTES(x) (__insn_v1addi(0, x))
-# define NSIZE 8
-
-/*
- * The SHLBYTE() operation shifts each byte left by 1, *not*
- * rolling over into the next byte
- */
-static inline __attribute_const__ u64 SHLBYTE(u64 v)
-{
- /* Vector One Byte Shift Left Immediate. */
- return __insn_v1shli(v, 1);
-}
-
-/*
- * The MASK() operation returns 0xFF in any byte for which the high
- * bit is 1, 0x00 for any byte for which the high bit is 0.
- */
-static inline __attribute_const__ u64 MASK(u64 v)
-{
- /* Vector One Byte Shift Right Signed Immediate. */
- return __insn_v1shrsi(v, 7);
-}
-
-
-void raid6_tilegx$#_gen_syndrome(int disks, size_t bytes, void **ptrs)
-{
- u8 **dptr = (u8 **)ptrs;
- u64 *p, *q;
- int d, z, z0;
-
- u64 wd$$, wq$$, wp$$, w1$$, w2$$;
- u64 x1d = NBYTES(0x1d);
- u64 * z0ptr;
-
- z0 = disks - 3; /* Highest data disk */
- p = (u64 *)dptr[z0+1]; /* XOR parity */
- q = (u64 *)dptr[z0+2]; /* RS syndrome */
-
- z0ptr = (u64 *)&dptr[z0][0];
- for ( d = 0 ; d < bytes ; d += NSIZE*$# ) {
- wq$$ = wp$$ = *z0ptr++;
- for ( z = z0-1 ; z >= 0 ; z-- ) {
- wd$$ = *(u64 *)&dptr[z][d+$$*NSIZE];
- wp$$ = wp$$ ^ wd$$;
- w2$$ = MASK(wq$$);
- w1$$ = SHLBYTE(wq$$);
- w2$$ = w2$$ & x1d;
- w1$$ = w1$$ ^ w2$$;
- wq$$ = w1$$ ^ wd$$;
- }
- *p++ = wp$$;
- *q++ = wq$$;
- }
-}
-
-const struct raid6_calls raid6_tilegx$# = {
- raid6_tilegx$#_gen_syndrome,
- NULL, /* XOR not yet implemented */
- NULL,
- "tilegx$#",
- 0
-};
diff --git a/lib/test_user_copy.c b/lib/test_user_copy.c
index 4621db8..e161f04 100644
--- a/lib/test_user_copy.c
+++ b/lib/test_user_copy.c
@@ -31,11 +31,8 @@
* their capability at compile-time, we just have to opt-out certain archs.
*/
#if BITS_PER_LONG == 64 || (!(defined(CONFIG_ARM) && !defined(MMU)) && \
- !defined(CONFIG_BLACKFIN) && \
- !defined(CONFIG_M32R) && \
!defined(CONFIG_M68K) && \
!defined(CONFIG_MICROBLAZE) && \
- !defined(CONFIG_MN10300) && \
!defined(CONFIG_NIOS2) && \
!defined(CONFIG_PPC32) && \
!defined(CONFIG_SUPERH))