metag: Remove arch/metag/

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is no longer maintained, now struggles to build modern kernels due to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
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Graham Whaley <graham.whaley@gmail.com>
Cc: linux-metag@vger.kernel.org

1 files changed, 0 insertions, 28 deletions

diff --git a/arch/metag/include/asm/smp.h b/arch/metag/include/asm/smp.h
deleted file mode 100644
index 8d3683d..0000000
--- a/arch/metag/include/asm/smp.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_SMP_H
-#define __ASM_SMP_H
-
-#include <linux/cpumask.h>
-
-#define raw_smp_processor_id() (current_thread_info()->cpu)
-
-enum ipi_msg_type {
-	IPI_CALL_FUNC,
-	IPI_RESCHEDULE,
-};
-
-extern void arch_send_call_function_single_ipi(int cpu);
-extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
-
-asmlinkage void secondary_start_kernel(void);
-
-extern void secondary_startup(void);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern void __cpu_die(unsigned int cpu);
-extern int __cpu_disable(void);
-extern void cpu_die(void);
-#endif
-
-extern void smp_init_cpus(void);
-#endif /* __ASM_SMP_H */