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is no longer maintained, now struggles to build modern kernels due to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, 83 deletions

diff --git a/arch/metag/include/asm/pgalloc.h b/arch/metag/include/asm/pgalloc.h
deleted file mode 100644
index 0b9d95d78b61..000000000000
--- a/arch/metag/include/asm/pgalloc.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _METAG_PGALLOC_H
-#define _METAG_PGALLOC_H
-
-#include <linux/threads.h>
-#include <linux/mm.h>
-
-#define pmd_populate_kernel(mm, pmd, pte) \
-	set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte)))
-
-#define pmd_populate(mm, pmd, pte) \
-	set_pmd(pmd, __pmd(_PAGE_TABLE | page_to_phys(pte)))
-
-#define pmd_pgtable(pmd) pmd_page(pmd)
-
-/*
- * Allocate and free page tables.
- */
-#ifdef CONFIG_METAG_META21_MMU
-static inline void pgd_ctor(pgd_t *pgd)
-{
-	memcpy(pgd + USER_PTRS_PER_PGD,
-	       swapper_pg_dir + USER_PTRS_PER_PGD,
-	       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
-}
-#else
-#define pgd_ctor(x)	do { } while (0)
-#endif
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
-	pgd_t *pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
-	if (pgd)
-		pgd_ctor(pgd);
-	return pgd;
-}
-
-static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
-	free_page((unsigned long)pgd);
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
-					  unsigned long address)
-{
-	pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
-	return pte;
-}
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
-				      unsigned long address)
-{
-	struct page *pte;
-	pte = alloc_pages(GFP_KERNEL  | __GFP_ZERO, 0);
-	if (!pte)
-		return NULL;
-	if (!pgtable_page_ctor(pte)) {
-		__free_page(pte);
-		return NULL;
-	}
-	return pte;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
-	free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
-	pgtable_page_dtor(pte);
-	__free_page(pte);
-}
-
-#define __pte_free_tlb(tlb, pte, addr)				\
-	do {							\
-		pgtable_page_dtor(pte);				\
-		tlb_remove_page((tlb), (pte));			\
-	} while (0)
-
-#define check_pgt_cache()	do { } while (0)
-
-#endif