linux-kernel - [tip:x86/cleanups] x86/mm/dump_pagetables: Remove the unused prev

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Date:   Thu, 14 Feb 2019 08:16:23 -0800
From:   tip-bot for Shaokun Zhang <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
        aryabinin@...tuozzo.com, mingo@...hat.com, tglx@...utronix.de,
        hpa@...or.com, bp@...e.de, zhangshaokun@...ilicon.com,
        x86@...nel.org
Subject: [tip:x86/cleanups] x86/mm/dump_pagetables: Remove the unused
 prev_pud variable

Commit-ID:  8e8a3cea7ea5f5458fdf2287713626892e7715f5
Gitweb:     https://git.kernel.org/tip/8e8a3cea7ea5f5458fdf2287713626892e7715f5
Author:     Shaokun Zhang <zhangshaokun@...ilicon.com>
AuthorDate: Thu, 14 Feb 2019 17:33:49 +0800
Committer:  Borislav Petkov <bp@...e.de>
CommitDate: Thu, 14 Feb 2019 17:09:43 +0100

x86/mm/dump_pagetables: Remove the unused prev_pud variable

The 'prev_pud' local variable became unused after commit

  04b67022fb6d ("x86/mm/dump_pagetables: Speed up page tables dump for CONFIG_KASAN=y").

Remove it.

Signed-off-by: Shaokun Zhang <zhangshaokun@...ilicon.com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: x86-ml <x86@...nel.org>
Link: https://lkml.kernel.org/r/1550136829-49088-1-git-send-email-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++;
 	}
 }