linux-kernel - [tip:x86/mm] x86: use roundup() instead of PAGE_ALIGN() in find_early_table

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Date:	Tue, 3 Mar 2009 11:09:45 GMT
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	penberg@...helsinki.fi, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:x86/mm] x86: use roundup() instead of PAGE_ALIGN() in find_early_table_space()

Commit-ID:  fd578f9c0a0a7bf3e460e6f21cdc6f4018949e80
Gitweb:     http://git.kernel.org/tip/fd578f9c0a0a7bf3e460e6f21cdc6f4018949e80
Author:     "Pekka Enberg" <penberg@...helsinki.fi>
AuthorDate: Tue, 3 Mar 2009 12:55:05 +0200
Commit:     Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 3 Mar 2009 12:07:00 +0100

x86: use roundup() instead of PAGE_ALIGN() in find_early_table_space()

Impact: cleanup

This patch changes find_early_table_space() to use roundup() for rounding up
tables to page size to unify the common parts of the 32-bit and 64-bit
implementations.

Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
LKML-Reference: <1236077705.2675.6.camel@...berg-laptop>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/mm/init_32.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 5b06a2f..1dd6b63 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -845,10 +845,10 @@ static void __init find_early_table_space(unsigned long end, int use_pse)
 	unsigned long puds, pmds, ptes, tables, start;
 
 	puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
-	tables = PAGE_ALIGN(puds * sizeof(pud_t));
+	tables = roundup(puds * sizeof(pud_t), PAGE_SIZE);
 
 	pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
-	tables += PAGE_ALIGN(pmds * sizeof(pmd_t));
+	tables += roundup(pmds * sizeof(pmd_t), PAGE_SIZE);
 
 	if (use_pse) {
 		unsigned long extra;
@@ -859,10 +859,10 @@ static void __init find_early_table_space(unsigned long end, int use_pse)
 	} else
 		ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
 
-	tables += PAGE_ALIGN(ptes * sizeof(pte_t));
+	tables += roundup(ptes * sizeof(pte_t), PAGE_SIZE);
 
 	/* for fixmap */
-	tables += PAGE_ALIGN(__end_of_fixed_addresses * sizeof(pte_t));
+	tables += roundup(__end_of_fixed_addresses * sizeof(pte_t), PAGE_SIZE);
 
 	/*
 	 * RED-PEN putting page tables only on node 0 could
--
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