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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 20:20:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 20:20:12 -0700
commitf5a8eb632b562bd9c16c389f5db3a5260fba4157 (patch)
tree82687234d772ff8f72a31e598fe16553885c56c9 /tools/arch
parentc9297d284126b80c9cfd72c690e0da531c99fc48 (diff)
parentdd3b8c329aa270027fba61a02a12600972dc3983 (diff)
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this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer.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 ...
Diffstat (limited to 'tools/arch')
-rw-r--r--tools/arch/frv/include/uapi/asm/bitsperlong.h2
-rw-r--r--tools/arch/frv/include/uapi/asm/mman.h7
-rw-r--r--tools/arch/m32r/include/uapi/asm/bitsperlong.h2
-rw-r--r--tools/arch/m32r/include/uapi/asm/mman.h7
-rw-r--r--tools/arch/mn10300/include/uapi/asm/bitsperlong.h1
-rw-r--r--tools/arch/mn10300/include/uapi/asm/mman.h7
-rw-r--r--tools/arch/score/include/uapi/asm/bitsperlong.h7
-rw-r--r--tools/arch/score/include/uapi/asm/mman.h7
-rw-r--r--tools/arch/tile/include/asm/barrier.h16
-rw-r--r--tools/arch/tile/include/uapi/asm/bitsperlong.h27
-rw-r--r--tools/arch/tile/include/uapi/asm/mman.h16
11 files changed, 0 insertions, 99 deletions
diff --git a/tools/arch/frv/include/uapi/asm/bitsperlong.h b/tools/arch/frv/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 76da34b10f59..000000000000
--- a/tools/arch/frv/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,2 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/bitsperlong.h>
diff --git a/tools/arch/frv/include/uapi/asm/mman.h b/tools/arch/frv/include/uapi/asm/mman.h
deleted file mode 100644
index 5bc900b0bc78..000000000000
--- a/tools/arch/frv/include/uapi/asm/mman.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_FRV_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_FRV_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on frv, fix it for perf */
-#define MAP_32BIT 0
-#endif
diff --git a/tools/arch/m32r/include/uapi/asm/bitsperlong.h b/tools/arch/m32r/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 76da34b10f59..000000000000
--- a/tools/arch/m32r/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,2 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/bitsperlong.h>
diff --git a/tools/arch/m32r/include/uapi/asm/mman.h b/tools/arch/m32r/include/uapi/asm/mman.h
deleted file mode 100644
index d19b82c9c290..000000000000
--- a/tools/arch/m32r/include/uapi/asm/mman.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_M32R_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_M32R_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on m32r, fix it for perf */
-#define MAP_32BIT 0
-#endif
diff --git a/tools/arch/mn10300/include/uapi/asm/bitsperlong.h b/tools/arch/mn10300/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 6dc0bb0c13b2..000000000000
--- a/tools/arch/mn10300/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1 +0,0 @@
-#include <asm-generic/bitsperlong.h>
diff --git a/tools/arch/mn10300/include/uapi/asm/mman.h b/tools/arch/mn10300/include/uapi/asm/mman.h
deleted file mode 100644
index b9360639974f..000000000000
--- a/tools/arch/mn10300/include/uapi/asm/mman.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_MN10300_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_MN10300_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on mn10300, fix it for perf */
-#define MAP_32BIT 0
-#endif
diff --git a/tools/arch/score/include/uapi/asm/bitsperlong.h b/tools/arch/score/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index df48f2717da2..000000000000
--- a/tools/arch/score/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_BITSPERLONG_H
-#define _ASM_SCORE_BITSPERLONG_H
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* _ASM_SCORE_BITSPERLONG_H */
diff --git a/tools/arch/score/include/uapi/asm/mman.h b/tools/arch/score/include/uapi/asm/mman.h
deleted file mode 100644
index b4bd195a8586..000000000000
--- a/tools/arch/score/include/uapi/asm/mman.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_SCORE_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_SCORE_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on score, fix it for perf */
-#define MAP_32BIT 0
-#endif
diff --git a/tools/arch/tile/include/asm/barrier.h b/tools/arch/tile/include/asm/barrier.h
deleted file mode 100644
index 7ad02a591b43..000000000000
--- a/tools/arch/tile/include/asm/barrier.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _TOOLS_LINUX_ASM_TILE_BARRIER_H
-#define _TOOLS_LINUX_ASM_TILE_BARRIER_H
-/*
- * FIXME: This came from tools/perf/perf-sys.h, where it was first introduced
- * in 620830b6954913647b7c7f68920cf48eddf6ad92, more work needed to make it
- * more closely follow the Linux kernel arch/tile/include/asm/barrier.h file.
- * Probably when we continue work on tools/ Kconfig support to have all the
- * CONFIG_ needed for properly doing that.
- */
-
-#define mb() asm volatile ("mf" ::: "memory")
-#define wmb() mb()
-#define rmb() mb()
-
-#endif /* _TOOLS_LINUX_ASM_TILE_BARRIER_H */
diff --git a/tools/arch/tile/include/uapi/asm/bitsperlong.h b/tools/arch/tile/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 57cca78c0fbb..000000000000
--- a/tools/arch/tile/include/uapi/asm/bitsperlong.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Copyright 2010 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, version 2.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for
- * more details.
- */
-
-#ifndef _ASM_TILE_BITSPERLONG_H
-#define _ASM_TILE_BITSPERLONG_H
-
-#ifdef __LP64__
-# define __BITS_PER_LONG 64
-#else
-# define __BITS_PER_LONG 32
-#endif
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* _ASM_TILE_BITSPERLONG_H */
diff --git a/tools/arch/tile/include/uapi/asm/mman.h b/tools/arch/tile/include/uapi/asm/mman.h
deleted file mode 100644
index 65ec92925c6c..000000000000
--- a/tools/arch/tile/include/uapi/asm/mman.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_TILE_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_TILE_UAPI_ASM_MMAN_FIX_H
-#define MAP_DENYWRITE 0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_GROWSDOWN 0x0100
-#define MAP_HUGETLB 0x4000
-#define MAP_LOCKED 0x0200
-#define MAP_NONBLOCK 0x0080
-#define MAP_NORESERVE 0x0400
-#define MAP_POPULATE 0x0040
-#define MAP_STACK MAP_GROWSDOWN
-#include <uapi/asm-generic/mman-common.h>
-/* MAP_32BIT is undefined on tile, fix it for perf */
-#define MAP_32BIT 0
-#endif