From: "Fenghua Yu" <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
"H Peter Anvin" <hpa@zytor.com>, "Ingo Molnar" <mingo@elte.hu>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Tony Luck" <tony.luck@intel.com>,
"Suresh B Siddha" <suresh.b.siddha@intel.com>,
"Len Brown" <len.brown@intel.com>,
"Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
"Fenghua Yu" <fenghua.yu@intel.com>
Subject: [PATCH 4/9] x86/common.c: Init BSP data during BSP online
Date: Fri, 4 Nov 2011 15:03:56 -0700 [thread overview]
Message-ID: <1320444241-834-5-git-send-email-fenghua.yu@intel.com> (raw)
In-Reply-To: <1320444241-834-1-git-send-email-fenghua.yu@intel.com>
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
next prev parent reply other threads:[~2011-11-04 22:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-04 22:03 [PATCH 0/9] BSP or CPU0 online/offline Fenghua Yu
2011-11-04 22:03 ` [PATCH 1/9] include/linux/cpu.h: Define architecture dependent cpu map update and state check functions Fenghua Yu
2011-11-04 22:03 ` [PATCH 2/9] kernel/cpu.c: Add arch dependent cpu map update functions Fenghua Yu
2011-11-05 10:28 ` Srivatsa S. Bhat
2011-11-04 22:03 ` [PATCH 3/9] x86/i387.c: Thread xstate is initialized only on BSP once Fenghua Yu
2011-11-04 22:03 ` Fenghua Yu [this message]
2011-11-04 22:03 ` [PATCH 5/9] x86/mtrr/main.c: Ask the first online CPU to save mtrr Fenghua Yu
2011-11-04 22:03 ` [PATCH 6/9] kernel/power/suspend.c,hibernate.c: Don't hibernate/suspend if CPU0 is offline Fenghua Yu
2011-11-04 22:03 ` [PATCH 7/9] x86/topology.c: Support functions for BSP online/offline Fenghua Yu
2011-11-05 11:01 ` Srivatsa S. Bhat
2011-11-05 21:13 ` Srivatsa S. Bhat
2011-11-07 19:57 ` Yu, Fenghua
2011-11-04 22:04 ` [PATCH 8/9] x86/smpboot.c: Don't offline BSP if any irq can not be migrated out of it Fenghua Yu
2011-11-04 22:04 ` [PATCH 9/9] Documentations/cpu-hotplug.tx, kernel-parameters.txt: Add x86 CPU0 online/offline feature Fenghua Yu
2011-11-04 23:27 ` Randy Dunlap
2011-11-05 11:17 ` [PATCH 0/9] BSP or CPU0 online/offline Srivatsa S. Bhat
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