linux-kernel - [tip:x86/mm] x86: set_highmem_pages

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Date:	Wed, 4 Mar 2009 19:21:28 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, mel@....ul.ie, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:x86/mm] x86: set_highmem_pages_init() cleanup, #2

Commit-ID:  6298e719cf388f43b674f43799af467d3e4e5aa7
Gitweb:     http://git.kernel.org/tip/6298e719cf388f43b674f43799af467d3e4e5aa7
Author:     "Pekka Enberg" <penberg@...helsinki.fi>
AuthorDate: Wed, 4 Mar 2009 10:16:07 +0200
Commit:     Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 4 Mar 2009 19:00:51 +0100

x86: set_highmem_pages_init() cleanup, #2

Impact: cleanup

The zones are set up at this stage so there's a highmem zone
available even for the UMA case.

The only difference there is that for machines that have
CONFIG_HIGHMEM enabled but don't have any highmem available,
->zone_start_pfn is zero whereas highstart_pfn is non-zero).

The field is left zeroed because of the !size test in
free_area_init_core() but shouldn't be a problem because
add_highpages_with_active_regions() handles empty ranges just
fine.

Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
Cc: Mel Gorman <mel@....ul.ie>
LKML-Reference: <1236154567.29024.23.camel@...berg-laptop>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 arch/x86/mm/highmem_32.c |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index 00f127c..d117453 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -158,7 +158,6 @@ EXPORT_SYMBOL(kunmap);
 EXPORT_SYMBOL(kmap_atomic);
 EXPORT_SYMBOL(kunmap_atomic);
 
-#ifdef CONFIG_NUMA
 void __init set_highmem_pages_init(void)
 {
 	struct zone *zone;
@@ -182,11 +181,3 @@ void __init set_highmem_pages_init(void)
 	}
 	totalram_pages += totalhigh_pages;
 }
-#else
-void __init set_highmem_pages_init(void)
-{
-	add_highpages_with_active_regions(0, highstart_pfn, highend_pfn);
-
-	totalram_pages += totalhigh_pages;
-}
-#endif /* CONFIG_NUMA */
--
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