linux-kernel - [PATCH v2 18/20] x86, mm: Parse numa info early

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Date:	Sat,  9 Mar 2013 22:44:45 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Thomas Renninger <trenn@...e.de>,
	Tang Chen <tangchen@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>,
	Pekka Enberg <penberg@...nel.org>,
	Jacob Shin <jacob.shin@....com>
Subject: [PATCH v2 18/20] x86, mm: Parse numa info early

Parsing numa info has been separated to two functions now.

early_initmem_info() only parse info in numa_meminfo and
nodes_parsed. still keep numaq, acpi_numa, amd_numa, dummy
fall back sequence working.

SLIT and numa emulation handling are still left in initmem_init().

Call early_initmem_init before init_mem_mapping() to prepare
to use numa_info with it.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Cc: Pekka Enberg <penberg@...nel.org>
Cc: Jacob Shin <jacob.shin@....com>
---
 arch/x86/kernel/setup.c |   24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 626bc9f..86e1ec0 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1098,13 +1098,21 @@ void __init setup_arch(char **cmdline_p)
 	trim_platform_memory_ranges();
 	trim_low_memory_range();
 
+	/*
+	 * Parse the ACPI tables for possible boot-time SMP configuration.
+	 */
+	acpi_initrd_override_copy();
+	acpi_boot_table_init();
+	early_acpi_boot_init();
+	early_initmem_init();
 	init_mem_mapping();
-
+	memblock.current_limit = get_max_mapped();
 	early_trap_pf_init();
 
+	reserve_initrd();
+
 	setup_real_mode();
 
-	memblock.current_limit = get_max_mapped();
 	dma_contiguous_reserve(0);
 
 	/*
@@ -1118,24 +1126,12 @@ void __init setup_arch(char **cmdline_p)
 	/* Allocate bigger log buffer */
 	setup_log_buf(1);
 
-	reserve_initrd();
-
-	acpi_initrd_override_copy();
-
 	reserve_crashkernel();
 
 	vsmp_init();
 
 	io_delay_init();
 
-	/*
-	 * Parse the ACPI tables for possible boot-time SMP configuration.
-	 */
-	acpi_boot_table_init();
-
-	early_acpi_boot_init();
-
-	early_initmem_init();
 	initmem_init();
 	memblock_find_dma_reserve();
 
-- 
1.7.10.4

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