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Subject: Re: [PATCH 01/13] metag: Remove arch/metag/
To:     James Hogan <jhogan@kernel.org>, linux-metag@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org
References: <20180221233825.10024-1-jhogan@kernel.org>
 <20180221233825.10024-2-jhogan@kernel.org>
From:   Guenter Roeck <linux@roeck-us.net>
Message-ID: <ea057277-fc48-3961-681d-385023741cdb@roeck-us.net>
Date:   Wed, 21 Feb 2018 19:52:08 -0800
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On 02/21/2018 03:38 PM, James Hogan wrote:
> The earliest Meta architecture port of Linux I have a record of was an
> import of a Meta port of Linux v2.4.1 in February 2004, which was worked
> on significantly over the next few years by Graham Whaley, Will Newton,
> Matt Fleming, myself and others.
> 
> Eventually the port was merged into mainline in v3.9 in March 2013, not
> long after Imagination Technologies bought MIPS Technologies and shifted
> its CPU focus over to the MIPS architecture.
> 
> As a result, though the port was maintained for a while, kept on life
> support for a while longer, and useful for testing a few specific
> drivers for which I don't have ready access to the equivalent MIPS
> hardware, it is now essentially dead with no users.
> 
> It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
> is no longer maintained, now struggles to build modern kernels due to
> toolchain bugs, and doesn't itself build with a modern GCC. The latest
> buildroot port is still using an old uClibc snapshot which is no longer
> served, and the latest uClibc doesn't build with GCC 4.2.4.
> 
> So lets call it a day and drop the Meta architecture port from the
> kernel. RIP Meta.
> 
> Signed-off-by: James Hogan <jhogan@kernel.org>
> Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-metag@vger.kernel.org

FWIW:

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

Did you drop the definition of CPUHP_AP_PERF_METAG_STARTING ?
I browsed through the patches but didn't find where it was dropped.

Also, how did you generate this patch, and can you try to apply it yourself ?
I tried to apply it, but neither git am nor patch worked for me. This patch
also doesn't show up on patchwork.kernel.org which is odd.

Guenter

> ---
>   arch/metag/Kconfig                       |  287 ------
>   arch/metag/Kconfig.debug                 |   34 -
>   arch/metag/Kconfig.soc                   |   69 --
>   arch/metag/Makefile                      |   89 --
>   arch/metag/boot/.gitignore               |    3 -
>   arch/metag/boot/Makefile                 |   68 --
>   arch/metag/boot/dts/Makefile             |   16 -
>   arch/metag/boot/dts/skeleton.dts         |   10 -
>   arch/metag/boot/dts/skeleton.dtsi        |   15 -
>   arch/metag/boot/dts/tz1090.dtsi          |  108 ---
>   arch/metag/boot/dts/tz1090_generic.dts   |   10 -
>   arch/metag/configs/meta1_defconfig       |   39 -
>   arch/metag/configs/meta2_defconfig       |   40 -
>   arch/metag/configs/meta2_smp_defconfig   |   41 -
>   arch/metag/configs/tz1090_defconfig      |   42 -
>   arch/metag/include/asm/Kbuild            |   33 -
>   arch/metag/include/asm/atomic.h          |   49 --
>   arch/metag/include/asm/atomic_lnkget.h   |  204 -----
>   arch/metag/include/asm/atomic_lock1.h    |  157 ----
>   arch/metag/include/asm/barrier.h         |   85 --
>   arch/metag/include/asm/bitops.h          |  127 ---
>   arch/metag/include/asm/bug.h             |   13 -
>   arch/metag/include/asm/cache.h           |   24 -
>   arch/metag/include/asm/cacheflush.h      |  251 ------
>   arch/metag/include/asm/cachepart.h       |   43 -
>   arch/metag/include/asm/checksum.h        |   93 --
>   arch/metag/include/asm/clock.h           |   59 --
>   arch/metag/include/asm/cmpxchg.h         |   64 --
>   arch/metag/include/asm/cmpxchg_irq.h     |   43 -
>   arch/metag/include/asm/cmpxchg_lnkget.h  |   87 --
>   arch/metag/include/asm/cmpxchg_lock1.h   |   49 --
>   arch/metag/include/asm/core_reg.h        |   36 -
>   arch/metag/include/asm/cpu.h             |   15 -
>   arch/metag/include/asm/da.h              |   44 -
>   arch/metag/include/asm/delay.h           |   30 -
>   arch/metag/include/asm/div64.h           |   13 -
>   arch/metag/include/asm/dma-mapping.h     |   12 -
>   arch/metag/include/asm/elf.h             |  126 ---
>   arch/metag/include/asm/fixmap.h          |   69 --
>   arch/metag/include/asm/ftrace.h          |   24 -
>   arch/metag/include/asm/global_lock.h     |  101 ---
>   arch/metag/include/asm/highmem.h         |   62 --
>   arch/metag/include/asm/hugetlb.h         |   75 --
>   arch/metag/include/asm/hwthread.h        |   41 -
>   arch/metag/include/asm/io.h              |  170 ----
>   arch/metag/include/asm/irq.h             |   38 -
>   arch/metag/include/asm/irqflags.h        |   94 --
>   arch/metag/include/asm/l2cache.h         |  259 ------
>   arch/metag/include/asm/linkage.h         |    8 -
>   arch/metag/include/asm/mach/arch.h       |   86 --
>   arch/metag/include/asm/metag_isa.h       |   81 --
>   arch/metag/include/asm/metag_mem.h       | 1109 -----------------------
>   arch/metag/include/asm/metag_regs.h      | 1184 -------------------------
>   arch/metag/include/asm/mman.h            |   12 -
>   arch/metag/include/asm/mmu.h             |   78 --
>   arch/metag/include/asm/mmu_context.h     |  115 ---
>   arch/metag/include/asm/mmzone.h          |   43 -
>   arch/metag/include/asm/module.h          |   38 -
>   arch/metag/include/asm/page.h            |  129 ---
>   arch/metag/include/asm/perf_event.h      |    4 -
>   arch/metag/include/asm/pgalloc.h         |   83 --
>   arch/metag/include/asm/pgtable-bits.h    |  105 ---
>   arch/metag/include/asm/pgtable.h         |  270 ------
>   arch/metag/include/asm/processor.h       |  201 -----
>   arch/metag/include/asm/ptrace.h          |   61 --
>   arch/metag/include/asm/setup.h           |   10 -
>   arch/metag/include/asm/smp.h             |   28 -
>   arch/metag/include/asm/sparsemem.h       |   14 -
>   arch/metag/include/asm/spinlock.h        |   19 -
>   arch/metag/include/asm/spinlock_lnkget.h |  213 -----
>   arch/metag/include/asm/spinlock_lock1.h  |  165 ----
>   arch/metag/include/asm/spinlock_types.h  |   21 -
>   arch/metag/include/asm/stacktrace.h      |   21 -
>   arch/metag/include/asm/string.h          |   14 -
>   arch/metag/include/asm/switch.h          |   21 -
>   arch/metag/include/asm/syscall.h         |  104 ---
>   arch/metag/include/asm/syscalls.h        |   40 -
>   arch/metag/include/asm/tbx.h             | 1420 ------------------------------
>   arch/metag/include/asm/tcm.h             |   31 -
>   arch/metag/include/asm/thread_info.h     |  141 ---
>   arch/metag/include/asm/tlb.h             |   37 -
>   arch/metag/include/asm/tlbflush.h        |   78 --
>   arch/metag/include/asm/topology.h        |   28 -
>   arch/metag/include/asm/traps.h           |   48 -
>   arch/metag/include/asm/uaccess.h         |  213 -----
>   arch/metag/include/asm/unistd.h          |   12 -
>   arch/metag/include/asm/user_gateway.h    |   45 -
>   arch/metag/include/uapi/asm/Kbuild       |   31 -
>   arch/metag/include/uapi/asm/byteorder.h  |    2 -
>   arch/metag/include/uapi/asm/ech.h        |   16 -
>   arch/metag/include/uapi/asm/ptrace.h     |  114 ---
>   arch/metag/include/uapi/asm/sigcontext.h |   32 -
>   arch/metag/include/uapi/asm/siginfo.h    |   16 -
>   arch/metag/include/uapi/asm/swab.h       |   27 -
>   arch/metag/include/uapi/asm/unistd.h     |   24 -
>   arch/metag/kernel/.gitignore             |    1 -
>   arch/metag/kernel/Makefile               |   40 -
>   arch/metag/kernel/asm-offsets.c          |   15 -
>   arch/metag/kernel/cachepart.c            |  132 ---
>   arch/metag/kernel/clock.c                |  110 ---
>   arch/metag/kernel/core_reg.c             |  118 ---
>   arch/metag/kernel/da.c                   |   25 -
>   arch/metag/kernel/devtree.c              |   57 --
>   arch/metag/kernel/dma.c                  |  588 -------------
>   arch/metag/kernel/ftrace.c               |  121 ---
>   arch/metag/kernel/ftrace_stub.S          |   62 --
>   arch/metag/kernel/head.S                 |   66 --
>   arch/metag/kernel/irq.c                  |  293 ------
>   arch/metag/kernel/kick.c                 |  110 ---
>   arch/metag/kernel/machines.c             |   21 -
>   arch/metag/kernel/metag_ksyms.c          |   55 --
>   arch/metag/kernel/module.c               |  284 ------
>   arch/metag/kernel/perf/Makefile          |    3 -
>   arch/metag/kernel/perf/perf_event.c      |  879 ------------------
>   arch/metag/kernel/perf/perf_event.h      |  106 ---
>   arch/metag/kernel/perf_callchain.c       |   97 --
>   arch/metag/kernel/process.c              |  448 ----------
>   arch/metag/kernel/ptrace.c               |  427 ---------
>   arch/metag/kernel/setup.c                |  622 -------------
>   arch/metag/kernel/signal.c               |  336 -------
>   arch/metag/kernel/smp.c                  |  668 --------------
>   arch/metag/kernel/stacktrace.c           |  187 ----
>   arch/metag/kernel/sys_metag.c            |  181 ----
>   arch/metag/kernel/tbiunexp.S             |   23 -
>   arch/metag/kernel/tcm.c                  |  152 ----
>   arch/metag/kernel/time.c                 |   26 -
>   arch/metag/kernel/topology.c             |   78 --
>   arch/metag/kernel/traps.c                |  992 ---------------------
>   arch/metag/kernel/user_gateway.S         |   98 ---
>   arch/metag/kernel/vmlinux.lds.S          |   74 --
>   arch/metag/lib/Makefile                  |   23 -
>   arch/metag/lib/ashldi3.S                 |   34 -
>   arch/metag/lib/ashrdi3.S                 |   34 -
>   arch/metag/lib/checksum.c                |  167 ----
>   arch/metag/lib/clear_page.S              |   18 -
>   arch/metag/lib/cmpdi2.S                  |   33 -
>   arch/metag/lib/copy_page.S               |   21 -
>   arch/metag/lib/delay.c                   |   57 --
>   arch/metag/lib/div64.S                   |  109 ---
>   arch/metag/lib/divsi3.S                  |  101 ---
>   arch/metag/lib/ip_fast_csum.S            |   33 -
>   arch/metag/lib/lshrdi3.S                 |   34 -
>   arch/metag/lib/memcpy.S                  |  186 ----
>   arch/metag/lib/memmove.S                 |  346 --------
>   arch/metag/lib/memset.S                  |   87 --
>   arch/metag/lib/modsi3.S                  |   39 -
>   arch/metag/lib/muldi3.S                  |   45 -
>   arch/metag/lib/ucmpdi2.S                 |   28 -
>   arch/metag/lib/usercopy.c                | 1257 --------------------------
>   arch/metag/mm/Kconfig                    |  147 ----
>   arch/metag/mm/Makefile                   |   20 -
>   arch/metag/mm/cache.c                    |  521 -----------
>   arch/metag/mm/extable.c                  |   15 -
>   arch/metag/mm/fault.c                    |  247 ------
>   arch/metag/mm/highmem.c                  |  122 ---
>   arch/metag/mm/hugetlbpage.c              |  251 ------
>   arch/metag/mm/init.c                     |  408 ---------
>   arch/metag/mm/ioremap.c                  |   90 --
>   arch/metag/mm/l2cache.c                  |  193 ----
>   arch/metag/mm/maccess.c                  |   69 --
>   arch/metag/mm/mmu-meta1.c                |  157 ----
>   arch/metag/mm/mmu-meta2.c                |  208 -----
>   arch/metag/mm/numa.c                     |   82 --
>   arch/metag/oprofile/Makefile             |   18 -
>   arch/metag/oprofile/backtrace.c          |   63 --
>   arch/metag/oprofile/backtrace.h          |    7 -
>   arch/metag/oprofile/common.c             |   66 --
>   arch/metag/tbx/Makefile                  |   22 -
>   arch/metag/tbx/tbicore.S                 |  136 ---
>   arch/metag/tbx/tbictx.S                  |  366 --------
>   arch/metag/tbx/tbictxfpu.S               |  190 ----
>   arch/metag/tbx/tbidefr.S                 |  175 ----
>   arch/metag/tbx/tbidspram.S               |  161 ----
>   arch/metag/tbx/tbilogf.S                 |   48 -
>   arch/metag/tbx/tbipcx.S                  |  451 ----------
>   arch/metag/tbx/tbiroot.S                 |   87 --
>   arch/metag/tbx/tbisoft.S                 |  237 -----
>   arch/metag/tbx/tbistring.c               |  114 ---
>   arch/metag/tbx/tbitimer.S                |  207 -----
>   179 files changed, 25078 deletions(-)
>   delete mode 100644 arch/metag/Kconfig
>   delete mode 100644 arch/metag/Kconfig.debug
>   delete mode 100644 arch/metag/Kconfig.soc
>   delete mode 100644 arch/metag/Makefile
>   delete mode 100644 arch/metag/boot/.gitignore
>   delete mode 100644 arch/metag/boot/Makefile
>   delete mode 100644 arch/metag/boot/dts/Makefile
>   delete mode 100644 arch/metag/boot/dts/skeleton.dts
>   delete mode 100644 arch/metag/boot/dts/skeleton.dtsi
>   delete mode 100644 arch/metag/boot/dts/tz1090.dtsi
>   delete mode 100644 arch/metag/boot/dts/tz1090_generic.dts
>   delete mode 100644 arch/metag/configs/meta1_defconfig
>   delete mode 100644 arch/metag/configs/meta2_defconfig
>   delete mode 100644 arch/metag/configs/meta2_smp_defconfig
>   delete mode 100644 arch/metag/configs/tz1090_defconfig
>   delete mode 100644 arch/metag/include/asm/Kbuild
>   delete mode 100644 arch/metag/include/asm/atomic.h
>   delete mode 100644 arch/metag/include/asm/atomic_lnkget.h
>   delete mode 100644 arch/metag/include/asm/atomic_lock1.h
>   delete mode 100644 arch/metag/include/asm/barrier.h
>   delete mode 100644 arch/metag/include/asm/bitops.h
>   delete mode 100644 arch/metag/include/asm/bug.h
>   delete mode 100644 arch/metag/include/asm/cache.h
>   delete mode 100644 arch/metag/include/asm/cacheflush.h
>   delete mode 100644 arch/metag/include/asm/cachepart.h
>   delete mode 100644 arch/metag/include/asm/checksum.h
>   delete mode 100644 arch/metag/include/asm/clock.h
>   delete mode 100644 arch/metag/include/asm/cmpxchg.h
>   delete mode 100644 arch/metag/include/asm/cmpxchg_irq.h
>   delete mode 100644 arch/metag/include/asm/cmpxchg_lnkget.h
>   delete mode 100644 arch/metag/include/asm/cmpxchg_lock1.h
>   delete mode 100644 arch/metag/include/asm/core_reg.h
>   delete mode 100644 arch/metag/include/asm/cpu.h
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> 
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> diff --git a/arch/metag/include/asm/mach/arch.h b/arch/metag/include/asm/mach/arch.h
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>