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authorLi Shaohua <shaohua.li@intel.com>2005-06-25 14:54:56 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:30 -0700
commite1367daf3eed5cd619ee88c9907e1e6ddaa58406 (patch)
treedce60efefba356e0a914669587586a6174e41b94 /arch/i386/kernel/cpu
parent0bb3184df537002a742bafddf3f4fb482b7fe610 (diff)
[PATCH] cpu state clean after hot remove
Clean CPU states in order to reuse smp boot code for CPU hotplug. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/cpu')
-rw-r--r--arch/i386/kernel/cpu/common.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index aac74758caf..2203a9d2021 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -651,3 +651,15 @@ void __devinit cpu_init(void)
clear_used_math();
mxcsr_feature_mask_init();
}
+
+#ifdef CONFIG_HOTPLUG_CPU
+void __devinit cpu_uninit(void)
+{
+ int cpu = raw_smp_processor_id();
+ cpu_clear(cpu, cpu_initialized);
+
+ /* lazy TLB state */
+ per_cpu(cpu_tlbstate, cpu).state = 0;
+ per_cpu(cpu_tlbstate, cpu).active_mm = &init_mm;
+}
+#endif