From: tip-bot for Yinghai Lu <yinghai@kernel.org>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org,
yinghai@kernel.org, penberg@kernel.org,
isimatu.yasuaki@jp.fujitsu.com, tglx@linutronix.de,
hpa@linux.intel.com, mingo@elte.hu
Subject: [tip:x86/mm2] x86, mm: Split out split_mem_range from init_memory_mapping
Date: Wed, 21 Nov 2012 17:39:28 -0800 [thread overview]
Message-ID: <tip-4e33e06555329e93523b3d2590b9210bf84120a3@git.kernel.org> (raw)
In-Reply-To: <1353123563-3103-3-git-send-email-yinghai@kernel.org>
Commit-ID: 4e33e06555329e93523b3d2590b9210bf84120a3
Gitweb: http://git.kernel.org/tip/4e33e06555329e93523b3d2590b9210bf84120a3
Author: Yinghai Lu <yinghai@kernel.org>
AuthorDate: Fri, 16 Nov 2012 19:38:39 -0800
Committer: H. Peter Anvin <hpa@linux.intel.com>
CommitDate: Sat, 17 Nov 2012 11:59:01 -0800
x86, mm: Split out split_mem_range from init_memory_mapping
So make init_memory_mapping smaller and readable.
-v2: use 0 instead of nr_range as input parameter found by Yasuaki Ishimatsu.
Suggested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1353123563-3103-3-git-send-email-yinghai@kernel.org
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
arch/x86/mm/init.c | 41 +++++++++++++++++++++++++----------------
1 file changed, 25 insertions(+), 16 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index aa5b0da..6368b86 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -146,25 +146,13 @@ static int __meminit save_mr(struct map_range *mr, int nr_range,
return nr_range;
}
-/*
- * Setup the direct mapping of the physical memory at PAGE_OFFSET.
- * This runs before bootmem is initialized and gets pages directly from
- * the physical memory. To access them they are temporarily mapped.
- */
-unsigned long __init_refok init_memory_mapping(unsigned long start,
- unsigned long end)
+static int __meminit split_mem_range(struct map_range *mr, int nr_range,
+ unsigned long start,
+ unsigned long end)
{
unsigned long start_pfn, end_pfn;
- unsigned long ret = 0;
unsigned long pos;
- struct map_range mr[NR_RANGE_MR];
- int nr_range, i;
-
- printk(KERN_INFO "init_memory_mapping: [mem %#010lx-%#010lx]\n",
- start, end - 1);
-
- memset(mr, 0, sizeof(mr));
- nr_range = 0;
+ int i;
/* head if not big page alignment ? */
start_pfn = start >> PAGE_SHIFT;
@@ -258,6 +246,27 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
(mr[i].page_size_mask & (1<<PG_LEVEL_1G))?"1G":(
(mr[i].page_size_mask & (1<<PG_LEVEL_2M))?"2M":"4k"));
+ return nr_range;
+}
+
+/*
+ * Setup the direct mapping of the physical memory at PAGE_OFFSET.
+ * This runs before bootmem is initialized and gets pages directly from
+ * the physical memory. To access them they are temporarily mapped.
+ */
+unsigned long __init_refok init_memory_mapping(unsigned long start,
+ unsigned long end)
+{
+ struct map_range mr[NR_RANGE_MR];
+ unsigned long ret = 0;
+ int nr_range, i;
+
+ pr_info("init_memory_mapping: [mem %#010lx-%#010lx]\n",
+ start, end - 1);
+
+ memset(mr, 0, sizeof(mr));
+ nr_range = split_mem_range(mr, 0, start, end);
+
/*
* Find space for the kernel direct mapping tables.
*
next prev parent reply other threads:[~2012-11-22 20:43 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-17 3:38 [PATCH v8 00/46] x86, mm: map ram from top-down with BRK and memblock Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 01/46] x86, mm: Add global page_size_mask and probe one time only Yinghai Lu
2012-11-22 1:38 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 02/46] x86, mm: Split out split_mem_range from init_memory_mapping Yinghai Lu
2012-11-22 1:39 ` tip-bot for Yinghai Lu [this message]
2012-11-17 3:38 ` [PATCH v8 03/46] x86, mm: Move down find_early_table_space() Yinghai Lu
2012-11-22 1:40 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 16:50 ` [PATCH v8 03/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 04/46] x86, mm: Move init_memory_mapping calling out of setup.c Yinghai Lu
2012-11-22 1:41 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 16:50 ` [PATCH v8 04/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 05/46] x86, mm: Revert back good_end setting for 64bit Yinghai Lu
2012-11-22 1:42 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 06/46] x86, mm: Change find_early_table_space() paramters Yinghai Lu
2012-11-22 1:43 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 16:50 ` [PATCH v8 06/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 07/46] x86, mm: Find early page table buffer together Yinghai Lu
2012-11-22 1:44 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 16:50 ` [PATCH v8 07/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 08/46] x86, mm: Separate out calculate_table_space_size() Yinghai Lu
2012-11-22 1:45 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 16:59 ` [PATCH v8 08/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 09/46] x86, mm: Set memblock initial limit to 1M Yinghai Lu
2012-11-22 1:46 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 10/46] x86, mm: if kernel .text .data .bss are not marked as E820_RAM, complain and fix Yinghai Lu
2012-11-22 1:47 ` [tip:x86/mm2] " tip-bot for Jacob Shin
2012-11-17 3:38 ` [PATCH v8 11/46] x86, mm: Fixup code testing if a pfn is direct mapped Yinghai Lu
2012-11-22 1:48 ` [tip:x86/mm2] " tip-bot for Jacob Shin
2012-11-17 3:38 ` [PATCH v8 12/46] x86, mm: use pfn_range_is_mapped() with CPA Yinghai Lu
2012-11-22 1:49 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 17:06 ` [PATCH v8 12/46] " Konrad Rzeszutek Wilk
2012-11-28 19:33 ` Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 13/46] x86, mm: use pfn_range_is_mapped() with gart Yinghai Lu
2012-11-22 1:50 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 17:07 ` [PATCH v8 13/46] " Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 14/46] x86, mm: use pfn_range_is_mapped() with reserve_initrd Yinghai Lu
2012-11-22 1:51 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 17:08 ` [PATCH v8 14/46] " Konrad Rzeszutek Wilk
2012-11-28 19:40 ` Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 15/46] x86, mm: Only direct map addresses that are marked as E820_RAM Yinghai Lu
2012-11-22 1:53 ` [tip:x86/mm2] " tip-bot for Jacob Shin
2012-11-28 17:15 ` [PATCH v8 15/46] " Konrad Rzeszutek Wilk
2012-11-28 19:43 ` Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 16/46] x86, mm: relocate initrd under all mem for 64bit Yinghai Lu
2012-11-22 1:54 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 17/46] x86, mm: Align start address to correct big page size Yinghai Lu
2012-11-22 1:55 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 18/46] x86, mm: Use big page size for small memory range Yinghai Lu
2012-11-22 1:56 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 19/46] x86, mm: Don't clear page table if range is ram Yinghai Lu
2012-11-22 1:57 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 20/46] x86, mm: Break down init_all_memory_mapping Yinghai Lu
2012-11-22 1:58 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:38 ` [PATCH v8 21/46] x86, mm: setup page table in top-down Yinghai Lu
2012-11-22 1:59 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 17:50 ` [PATCH v8 21/46] " Konrad Rzeszutek Wilk
2012-11-28 20:16 ` Yinghai Lu
2012-12-05 21:53 ` Konrad Rzeszutek Wilk
2012-11-17 3:38 ` [PATCH v8 22/46] x86, mm: Remove early_memremap workaround for page table accessing on 64bit Yinghai Lu
2012-11-22 2:00 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 18:57 ` [PATCH v8 22/46] " Konrad Rzeszutek Wilk
2012-11-17 3:39 ` [PATCH v8 23/46] x86, mm: Remove parameter in alloc_low_page for 64bit Yinghai Lu
2012-11-22 2:01 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 18:57 ` [PATCH v8 23/46] " Konrad Rzeszutek Wilk
2012-11-17 3:39 ` [PATCH v8 24/46] x86, mm: Merge alloc_low_page between 64bit and 32bit Yinghai Lu
2012-11-22 2:02 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 25/46] x86, mm: Move min_pfn_mapped back to mm/init.c Yinghai Lu
2012-11-22 2:03 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 26/46] x86, mm, Xen: Remove mapping_pagetable_reserve() Yinghai Lu
2012-11-22 2:04 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 27/46] x86, mm: Add alloc_low_pages(num) Yinghai Lu
2012-11-22 2:05 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 28/46] x86, mm: Add pointer about Xen mmu requirement for alloc_low_pages Yinghai Lu
2012-11-22 2:06 ` [tip:x86/mm2] " tip-bot for Stefano Stabellini
2012-11-17 3:39 ` [PATCH v8 29/46] x86, mm: only call early_ioremap_page_table_range_init() once Yinghai Lu
2012-11-22 2:07 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 19:02 ` [PATCH v8 29/46] " Konrad Rzeszutek Wilk
2012-11-17 3:39 ` [PATCH v8 30/46] x86, mm: Move back pgt_buf_* to mm/init.c Yinghai Lu
2012-11-22 2:08 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 31/46] x86, mm: Move init_gbpages() out of setup.c Yinghai Lu
2012-11-22 2:09 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 32/46] x86, mm: change low/hignmem_pfn_init to static on 32bit Yinghai Lu
2012-11-22 2:10 ` [tip:x86/mm2] x86, mm: change low/ hignmem_pfn_init " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 33/46] x86, mm: Move function declaration into mm_internal.h Yinghai Lu
2012-11-22 2:11 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 34/46] x86, mm: Add check before clear pte above max_low_pfn on 32bit Yinghai Lu
2012-11-22 2:13 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 19:09 ` [PATCH v8 34/46] " Konrad Rzeszutek Wilk
2012-11-28 20:38 ` Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 35/46] x86, mm: use round_up/down in split_mem_range() Yinghai Lu
2012-11-22 2:14 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 36/46] x86, mm: use PFN_DOWN " Yinghai Lu
2012-11-22 2:15 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 37/46] x86, mm: use pfn instead of pos in split_mem_range Yinghai Lu
2012-11-22 2:16 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 38/46] x86, mm: use limit_pfn for end pfn Yinghai Lu
2012-11-22 2:17 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 39/46] x86, mm: Unifying after_bootmem for 32bit and 64bit Yinghai Lu
2012-11-22 2:18 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 40/46] x86, mm: Move after_bootmem to mm_internel.h Yinghai Lu
2012-11-22 2:19 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 41/46] x86, mm: Use clamp_t() in init_range_memory_mapping Yinghai Lu
2012-11-22 2:20 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 42/46] x86, mm: kill numa_free_all_bootmem() Yinghai Lu
2012-11-22 2:21 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 43/46] x86, mm: kill numa_64.h Yinghai Lu
2012-11-22 2:22 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 44/46] sparc, mm: Remove calling of free_all_bootmem_node() Yinghai Lu
2012-11-22 2:23 ` [tip:x86/mm2] sparc, mm: Remove calling of free_all_bootmem_node( ) tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 45/46] mm: Kill NO_BOOTMEM version free_all_bootmem_node() Yinghai Lu
2012-11-22 2:24 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-17 3:39 ` [PATCH v8 46/46] x86, mm: Let "memmap=" take more entries one time Yinghai Lu
2012-11-22 2:25 ` [tip:x86/mm2] " tip-bot for Yinghai Lu
2012-11-28 19:12 ` [PATCH v8 46/46] " Konrad Rzeszutek Wilk
2012-11-27 21:17 ` [PATCH v8 00/46] x86, mm: map ram from top-down with BRK and memblock Konrad Rzeszutek Wilk
2012-11-28 19:35 ` Konrad Rzeszutek Wilk
2012-11-28 19:47 ` Yinghai Lu
2012-11-28 20:57 ` Konrad Rzeszutek Wilk
2012-11-28 21:06 ` Yinghai Lu
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