mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-25 22:23:14 -04:00
arch: remove obsolete architecture ports
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. 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this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer.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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJawdL2AAoJEGCrR//JCVInuH0P/RJAZh1nTD+TR34ZhJq2TBoo PgygwDU7Z2+tQVU+EZ453Gywz9/NMRFk1RWAZqrLix4ZtyIMvC6A1qfT2yH1Y7Fb Qh6tccQeLe4ezq5u4S/46R/fQXu3Txr92yVwzJJUuPyU0arF9rv5MmI8e6p7L1en yb74kSEaCe+/eMlsEj1Cc1dgthDNXGKIURHkRsILoweysCpesjiTg4qDcL+yTibV FP2wjVbniKESMKS6qL71tiT5sexvLsLwMNcGiHPj94qCIQuI7DLhLdBVsL5Su6gI sbtgv0dsq4auRYAbQdMaH1hFvu6WptsuttIbOMnz2Yegi2z28H8uVXkbk2WVLbqG ZESUwutGh8MzOL2RJ4jyyQq5sfo++CRGlfKjr6ImZRv03dv0pe/W85062cK5cKNs cgDDJjGRorOXW7dyU6jG2gRqODOQBObIv3w5efdq5OgzOWlbI4EC+Y5u1Z0JF/76 pSwtGXA6YhwC+9LLAlnVTHG+yOwuLmAICgoKcTbzTVDKA2YQZG/cYuQfI5S1wD8e X6urPx3Md2GCwLXQ9mzKBzKZUpu/Tuhx0NvwF4qVxy6x1PELjn68zuP7abDHr46r 57/09ooVN+iXXnEGMtQVS/OPvYHSa2NgTSZz6Y86lCRbZmUOOlK31RDNlMvYNA+s 3iIVHovno/JuJnTOE8LY =fQ8z -----END PGP SIGNATURE----- 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 ...
This commit is contained in:
Linus Torvalds
commit
f5a8eb632b
2498 changed files with 95 additions and 467668 deletions
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@ -179,33 +179,16 @@ typedef struct siginfo {
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* SIGILL si_codes
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*/
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#define ILL_ILLOPC 1 /* illegal opcode */
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#ifdef __bfin__
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# define ILL_ILLPARAOP 2 /* illegal opcode combine */
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#endif
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#define ILL_ILLOPN 2 /* illegal operand */
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#define ILL_ILLADR 3 /* illegal addressing mode */
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#define ILL_ILLTRP 4 /* illegal trap */
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#ifdef __bfin__
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# define ILL_ILLEXCPT 4 /* unrecoverable exception */
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#endif
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#define ILL_PRVOPC 5 /* privileged opcode */
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#define ILL_PRVREG 6 /* privileged register */
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#define ILL_COPROC 7 /* coprocessor error */
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#define ILL_BADSTK 8 /* internal stack error */
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#ifdef __bfin__
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# define ILL_CPLB_VI 9 /* D/I CPLB protect violation */
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# define ILL_CPLB_MISS 10 /* D/I CPLB miss */
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# define ILL_CPLB_MULHIT 11 /* D/I CPLB multiple hit */
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#endif
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#ifdef __tile__
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# define ILL_DBLFLT 9 /* double fault */
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# define ILL_HARDWALL 10 /* user networks hardwall violation */
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#endif
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#ifdef __ia64__
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# define ILL_BADIADDR 9 /* unimplemented instruction address */
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# define __ILL_BREAK 10 /* illegal break */
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# define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */
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#endif
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#define ILL_BADIADDR 9 /* unimplemented instruction address */
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#define __ILL_BREAK 10 /* illegal break */
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#define __ILL_BNDMOD 11 /* bundle-update (modification) in progress */
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#define NSIGILL 11
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/*
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@ -219,16 +202,11 @@ typedef struct siginfo {
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#define FPE_FLTRES 6 /* floating point inexact result */
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#define FPE_FLTINV 7 /* floating point invalid operation */
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#define FPE_FLTSUB 8 /* subscript out of range */
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#ifdef __frv__
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# define FPE_MDAOVF 9 /* media overflow */
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#endif
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#ifdef __ia64__
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# define __FPE_DECOVF 9 /* decimal overflow */
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# define __FPE_DECDIV 10 /* decimal division by zero */
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# define __FPE_DECERR 11 /* packed decimal error */
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# define __FPE_INVASC 12 /* invalid ASCII digit */
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# define __FPE_INVDEC 13 /* invalid decimal digit */
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#endif
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#define __FPE_DECOVF 9 /* decimal overflow */
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#define __FPE_DECDIV 10 /* decimal division by zero */
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#define __FPE_DECERR 11 /* packed decimal error */
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#define __FPE_INVASC 12 /* invalid ASCII digit */
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#define __FPE_INVDEC 13 /* invalid decimal digit */
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#define NSIGFPE 13
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/*
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@ -236,11 +214,7 @@ typedef struct siginfo {
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*/
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#define SEGV_MAPERR 1 /* address not mapped to object */
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#define SEGV_ACCERR 2 /* invalid permissions for mapped object */
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#ifdef __bfin__
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# define SEGV_STACKFLOW 3 /* stack overflow */
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#else
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# define SEGV_BNDERR 3 /* failed address bound checks */
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#endif
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#define SEGV_BNDERR 3 /* failed address bound checks */
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#ifdef __ia64__
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# define __SEGV_PSTKOVF 4 /* paragraph stack overflow */
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#else
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@ -254,12 +228,8 @@ typedef struct siginfo {
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#define BUS_ADRALN 1 /* invalid address alignment */
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#define BUS_ADRERR 2 /* non-existent physical address */
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#define BUS_OBJERR 3 /* object specific hardware error */
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#ifdef __bfin__
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# define BUS_OPFETCH 4 /* error from instruction fetch */
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#else
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/* hardware memory error consumed on a machine check: action required */
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# define BUS_MCEERR_AR 4
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#endif
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#define BUS_MCEERR_AR 4
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/* hardware memory error detected in process but not consumed: action optional*/
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#define BUS_MCEERR_AO 5
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#define NSIGBUS 5
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@ -271,12 +241,6 @@ typedef struct siginfo {
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#define TRAP_TRACE 2 /* process trace trap */
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#define TRAP_BRANCH 3 /* process taken branch trap */
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#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
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#ifdef __bfin__
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# define TRAP_STEP 1 /* single-step breakpoint */
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# define TRAP_TRACEFLOW 2 /* trace buffer overflow */
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# define TRAP_WATCHPT 3 /* watchpoint match */
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# define TRAP_ILLTRAP 4 /* illegal trap */
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#endif
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#define NSIGTRAP 4
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/*
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@ -736,169 +736,6 @@ __SYSCALL(__NR_statx, sys_statx)
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#undef __NR_syscalls
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#define __NR_syscalls 292
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/*
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* All syscalls below here should go away really,
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* these are provided for both review and as a porting
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* help for the C library version.
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*
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* Last chance: are any of these important enough to
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* enable by default?
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*/
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#ifdef __ARCH_WANT_SYSCALL_NO_AT
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#define __NR_open 1024
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__SYSCALL(__NR_open, sys_open)
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#define __NR_link 1025
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__SYSCALL(__NR_link, sys_link)
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#define __NR_unlink 1026
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__SYSCALL(__NR_unlink, sys_unlink)
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#define __NR_mknod 1027
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__SYSCALL(__NR_mknod, sys_mknod)
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#define __NR_chmod 1028
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__SYSCALL(__NR_chmod, sys_chmod)
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#define __NR_chown 1029
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__SYSCALL(__NR_chown, sys_chown)
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#define __NR_mkdir 1030
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__SYSCALL(__NR_mkdir, sys_mkdir)
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#define __NR_rmdir 1031
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__SYSCALL(__NR_rmdir, sys_rmdir)
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#define __NR_lchown 1032
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__SYSCALL(__NR_lchown, sys_lchown)
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#define __NR_access 1033
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__SYSCALL(__NR_access, sys_access)
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#define __NR_rename 1034
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__SYSCALL(__NR_rename, sys_rename)
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#define __NR_readlink 1035
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__SYSCALL(__NR_readlink, sys_readlink)
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#define __NR_symlink 1036
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__SYSCALL(__NR_symlink, sys_symlink)
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#define __NR_utimes 1037
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__SYSCALL(__NR_utimes, sys_utimes)
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#define __NR3264_stat 1038
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__SC_3264(__NR3264_stat, sys_stat64, sys_newstat)
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#define __NR3264_lstat 1039
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__SC_3264(__NR3264_lstat, sys_lstat64, sys_newlstat)
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#undef __NR_syscalls
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#define __NR_syscalls (__NR3264_lstat+1)
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#endif /* __ARCH_WANT_SYSCALL_NO_AT */
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#ifdef __ARCH_WANT_SYSCALL_NO_FLAGS
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#define __NR_pipe 1040
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__SYSCALL(__NR_pipe, sys_pipe)
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#define __NR_dup2 1041
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__SYSCALL(__NR_dup2, sys_dup2)
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#define __NR_epoll_create 1042
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__SYSCALL(__NR_epoll_create, sys_epoll_create)
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#define __NR_inotify_init 1043
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__SYSCALL(__NR_inotify_init, sys_inotify_init)
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#define __NR_eventfd 1044
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__SYSCALL(__NR_eventfd, sys_eventfd)
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#define __NR_signalfd 1045
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__SYSCALL(__NR_signalfd, sys_signalfd)
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#undef __NR_syscalls
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#define __NR_syscalls (__NR_signalfd+1)
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#endif /* __ARCH_WANT_SYSCALL_NO_FLAGS */
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#if (__BITS_PER_LONG == 32 || defined(__SYSCALL_COMPAT)) && \
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defined(__ARCH_WANT_SYSCALL_OFF_T)
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#define __NR_sendfile 1046
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__SYSCALL(__NR_sendfile, sys_sendfile)
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#define __NR_ftruncate 1047
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__SYSCALL(__NR_ftruncate, sys_ftruncate)
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#define __NR_truncate 1048
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__SYSCALL(__NR_truncate, sys_truncate)
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#define __NR_stat 1049
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__SYSCALL(__NR_stat, sys_newstat)
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#define __NR_lstat 1050
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__SYSCALL(__NR_lstat, sys_newlstat)
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#define __NR_fstat 1051
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__SYSCALL(__NR_fstat, sys_newfstat)
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#define __NR_fcntl 1052
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__SYSCALL(__NR_fcntl, sys_fcntl)
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#define __NR_fadvise64 1053
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#define __ARCH_WANT_SYS_FADVISE64
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__SYSCALL(__NR_fadvise64, sys_fadvise64)
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#define __NR_newfstatat 1054
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#define __ARCH_WANT_SYS_NEWFSTATAT
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__SYSCALL(__NR_newfstatat, sys_newfstatat)
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#define __NR_fstatfs 1055
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__SYSCALL(__NR_fstatfs, sys_fstatfs)
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#define __NR_statfs 1056
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__SYSCALL(__NR_statfs, sys_statfs)
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#define __NR_lseek 1057
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__SYSCALL(__NR_lseek, sys_lseek)
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#define __NR_mmap 1058
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__SYSCALL(__NR_mmap, sys_mmap)
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#undef __NR_syscalls
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#define __NR_syscalls (__NR_mmap+1)
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#endif /* 32 bit off_t syscalls */
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#ifdef __ARCH_WANT_SYSCALL_DEPRECATED
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#define __NR_alarm 1059
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#define __ARCH_WANT_SYS_ALARM
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__SYSCALL(__NR_alarm, sys_alarm)
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#define __NR_getpgrp 1060
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#define __ARCH_WANT_SYS_GETPGRP
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__SYSCALL(__NR_getpgrp, sys_getpgrp)
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#define __NR_pause 1061
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#define __ARCH_WANT_SYS_PAUSE
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__SYSCALL(__NR_pause, sys_pause)
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#define __NR_time 1062
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#define __ARCH_WANT_SYS_TIME
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#define __ARCH_WANT_COMPAT_SYS_TIME
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__SYSCALL(__NR_time, sys_time)
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#define __NR_utime 1063
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#define __ARCH_WANT_SYS_UTIME
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__SYSCALL(__NR_utime, sys_utime)
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#define __NR_creat 1064
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__SYSCALL(__NR_creat, sys_creat)
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#define __NR_getdents 1065
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#define __ARCH_WANT_SYS_GETDENTS
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__SYSCALL(__NR_getdents, sys_getdents)
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#define __NR_futimesat 1066
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__SYSCALL(__NR_futimesat, sys_futimesat)
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#define __NR_select 1067
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#define __ARCH_WANT_SYS_SELECT
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__SYSCALL(__NR_select, sys_select)
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#define __NR_poll 1068
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__SYSCALL(__NR_poll, sys_poll)
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#define __NR_epoll_wait 1069
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__SYSCALL(__NR_epoll_wait, sys_epoll_wait)
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#define __NR_ustat 1070
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__SYSCALL(__NR_ustat, sys_ustat)
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#define __NR_vfork 1071
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__SYSCALL(__NR_vfork, sys_vfork)
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#define __NR_oldwait4 1072
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__SYSCALL(__NR_oldwait4, sys_wait4)
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#define __NR_recv 1073
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__SYSCALL(__NR_recv, sys_recv)
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#define __NR_send 1074
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__SYSCALL(__NR_send, sys_send)
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#define __NR_bdflush 1075
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__SYSCALL(__NR_bdflush, sys_bdflush)
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#define __NR_umount 1076
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__SYSCALL(__NR_umount, sys_oldumount)
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __NR_uselib 1077
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__SYSCALL(__NR_uselib, sys_uselib)
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#define __NR__sysctl 1078
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__SYSCALL(__NR__sysctl, sys_sysctl)
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#define __NR_fork 1079
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#ifdef CONFIG_MMU
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__SYSCALL(__NR_fork, sys_fork)
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#else
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__SYSCALL(__NR_fork, sys_ni_syscall)
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#endif /* CONFIG_MMU */
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#undef __NR_syscalls
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#define __NR_syscalls (__NR_fork+1)
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#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */
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/*
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* 32 bit systems traditionally used different
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* syscalls for off_t and loff_t arguments, while
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@ -420,9 +420,6 @@ typedef struct elf64_shdr {
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#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
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#define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */
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#define NT_ARM_SVE 0x405 /* ARM Scalable Vector Extension registers */
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#define NT_METAG_CBUF 0x500 /* Metag catch buffer registers */
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#define NT_METAG_RPIPE 0x501 /* Metag read pipeline state */
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#define NT_METAG_TLS 0x502 /* Metag TLS pointer */
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#define NT_ARC_V2 0x600 /* ARCv2 accumulator/extra registers */
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/* Note header in a PT_NOTE section */
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