lkml.org 
[lkml]   [2011]   [Nov]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/9] x86/common.c: Init BSP data during BSP online
Date
From: Fenghua Yu <fenghua.yu@intel.com>

During BSP online, enable x2apic, set_numa_node, add numa mask, and enable
sep cpu for BSP.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
arch/x86/include/asm/processor.h | 1 +
arch/x86/kernel/cpu/common.c | 13 ++++++++++---
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index b650435..4057161 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -162,6 +162,7 @@ extern struct pt_regs *idle_regs(struct pt_regs *);

extern void early_cpu_init(void);
extern void identify_boot_cpu(void);
+extern void identify_boot_cpu_online(void);
extern void identify_secondary_cpu(struct cpuinfo_x86 *);
extern void print_cpu_info(struct cpuinfo_x86 *);
extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index aa003b1..faa3bda 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -916,6 +916,14 @@ void __init identify_boot_cpu(void)
#endif
}

+void __cpuinit identify_boot_cpu_online(void)
+{
+ numa_add_cpu(smp_processor_id());
+#ifdef CONFIG_X86_32
+ enable_sep_cpu();
+#endif
+}
+
void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)
{
BUG_ON(c == &boot_cpu_data);
@@ -1163,7 +1171,7 @@ void __cpuinit cpu_init(void)
oist = &per_cpu(orig_ist, cpu);

#ifdef CONFIG_NUMA
- if (cpu != 0 && percpu_read(numa_node) == 0 &&
+ if (percpu_read(numa_node) == 0 &&
early_cpu_to_node(cpu) != NUMA_NO_NODE)
set_numa_node(early_cpu_to_node(cpu));
#endif
@@ -1195,8 +1203,7 @@ void __cpuinit cpu_init(void)
barrier();

x86_configure_nx();
- if (cpu != 0)
- enable_x2apic();
+ enable_x2apic();

/*
* set up and load the per-CPU TSS
--
1.6.0.3


\
 
 \ /
  Last update: 2011-11-04 23:25    [from the cache]
©2003-2011 Jasper Spaans