linux-kernel - [PATCH v9 06/46] x86, mm: Change find_early_table

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Date:	Wed, 28 Nov 2012 13:47:17 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v9 06/46] x86, mm: Change find_early_table_space() paramters

call split_mem_range inside the function, that will make us call
split_mem_range two times. Following patch:

	x86, mm: Find early page table buffer together

tidies this up so we do not end up calling split_mem_range twice.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 arch/x86/mm/init.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index dbef4ff..51f919f 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -196,12 +196,18 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
  * mr[0].start to mr[nr_range - 1].end, while accounting for possible 2M and 1GB
  * pages. Then find enough contiguous space for those page tables.
  */
-static void __init find_early_table_space(struct map_range *mr, int nr_range)
+static void __init find_early_table_space(unsigned long start, unsigned long end)
 {
 	int i;
 	unsigned long puds = 0, pmds = 0, ptes = 0, tables;
-	unsigned long start = 0, good_end;
+	unsigned long good_end;
 	phys_addr_t base;
+	struct map_range mr[NR_RANGE_MR];
+	int nr_range;
+
+	memset(mr, 0, sizeof(mr));
+	nr_range = 0;
+	nr_range = split_mem_range(mr, nr_range, start, end);
 
 	for (i = 0; i < nr_range; i++) {
 		unsigned long range, extra;
@@ -276,7 +282,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
 	 * nodes are discovered.
 	 */
 	if (!after_bootmem)
-		find_early_table_space(mr, nr_range);
+		find_early_table_space(start, end);
 
 	for (i = 0; i < nr_range; i++)
 		ret = kernel_physical_mapping_init(mr[i].start, mr[i].end,
-- 
1.7.7

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