linux-kernel - [RESEND PATCH v2 06/14] hexagon: switch to generic version of pte allocation

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Message-Id: <20190721141914.GD26312@rapoport-lnx>
Date:   Sun, 21 Jul 2019 17:19:14 +0300
From:   Mike Rapoport <rppt@...ux.ibm.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Richard Kuo <rkuo@...eaurora.org>,
        linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: [RESEND PATCH v2 06/14] hexagon: switch to generic version of pte
 allocation

Hi,

The patch below was a part of of the series that switched a couple of
arches to use generic versions of pte_{alloc,free}_one.

Unfortunately, it fell between the cracks and I've noticed this only today :(

I understand that merge window is going to close in couple of hours, but
maybe this may still go in?

-- 
Sincerely yours,
Mike.

>From e298accfb0b023de70e255adf3f9a8d1b2c01063 Mon Sep 17 00:00:00 2001
From: Mike Rapoport <rppt@...ux.ibm.com>
Date: Tue, 30 Apr 2019 17:27:50 +0300
Subject: [PATCH v2 06/14] hexagon: switch to generic version of pte allocation

The hexagon implementation pte_alloc_one(), pte_alloc_one_kernel(),
pte_free_kernel() and pte_free() is identical to the generic except of
lack of __GFP_ACCOUNT for the user PTEs allocation.

Switch hexagon to use generic version of these functions.

Signed-off-by: Mike Rapoport <rppt@...ux.ibm.com>
---
 arch/hexagon/include/asm/pgalloc.h | 34 ++--------------------------------
 1 file changed, 2 insertions(+), 32 deletions(-)

diff --git a/arch/hexagon/include/asm/pgalloc.h b/arch/hexagon/include/asm/pgalloc.h
index d361838..7661a26 100644
--- a/arch/hexagon/include/asm/pgalloc.h
+++ b/arch/hexagon/include/asm/pgalloc.h
@@ -24,6 +24,8 @@
 #include <asm/mem-layout.h>
 #include <asm/atomic.h>
 
+#include <asm-generic/pgalloc.h>	/* for pte_{alloc,free}_one */
+
 #define check_pgt_cache() do {} while (0)
 
 extern unsigned long long kmap_generation;
@@ -59,38 +61,6 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 	free_page((unsigned long) pgd);
 }
 
-static inline struct page *pte_alloc_one(struct mm_struct *mm)
-{
-	struct page *pte;
-
-	pte = alloc_page(GFP_KERNEL | __GFP_ZERO);
-	if (!pte)
-		return NULL;
-	if (!pgtable_page_ctor(pte)) {
-		__free_page(pte);
-		return NULL;
-	}
-	return pte;
-}
-
-/* _kernel variant gets to use a different allocator */
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-{
-	gfp_t flags =  GFP_KERNEL | __GFP_ZERO;
-	return (pte_t *) __get_free_page(flags);
-}
-
-static inline void pte_free(struct mm_struct *mm, struct page *pte)
-{
-	pgtable_page_dtor(pte);
-	__free_page(pte);
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
-	free_page((unsigned long)pte);
-}
-
 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 				pgtable_t pte)
 {
-- 
2.7.4