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From:   Shaokun Zhang <zhangshaokun@hisilicon.com>
To:     <x86@kernel.org>, <linux-kernel@vger.kernel.org>
CC:     Shaokun Zhang <zhangshaokun@hisilicon.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        "Peter Zijlstra" <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Ingo Molnar" <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: [PATCH] x86/mm/dump_pagetables: Remove the unused prev_pud variable
Date:   Thu, 14 Feb 2019 17:33:49 +0800
Message-ID: <1550136829-49088-1-git-send-email-zhangshaokun@hisilicon.com>
MIME-Version: 1.0
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Sender: linux-kernel-owner@vger.kernel.org
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The 'prev_pud' local variable became unused after commit 04b67022fb6d 
("x86/mm/dump_pagetables: Speed up page tables dump for CONFIG_KASAN=y"),
let's remove it.

Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
 arch/x86/mm/dump_pagetables.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index e3cdc85ce5b6..ee8f8ab46941 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -444,7 +444,6 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, p4d_t addr,
 	int i;
 	pud_t *start, *pud_start;
 	pgprotval_t prot, eff;
-	pud_t *prev_pud = NULL;
 
 	pud_start = start = (pud_t *)p4d_page_vaddr(addr);
 
@@ -462,7 +461,6 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, p4d_t addr,
 		} else
 			note_page(m, st, __pgprot(0), 0, 3);
 
-		prev_pud = start;
 		start++;
 	}
 }
-- 
2.7.4