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authorLen Brown <len.brown@intel.com>2005-08-23 22:12:23 -0400
committerLen Brown <len.brown@intel.com>2005-08-23 22:12:23 -0400
commit84ffa747520edd4556b136bdfc9df9eb1673ce12 (patch)
tree1cfe20bd31fce1b5b3024384fcb324c3338d1d32 /arch/x86_64/kernel
parent702c7e7626deeabb057b6f529167b65ec2eefbdb (diff)
parent81065e2f415af6c028eac13f481fb9e60a0b487b (diff)
Merge from-linus to-akpm
Diffstat (limited to 'arch/x86_64/kernel')
-rw-r--r--arch/x86_64/kernel/smpboot.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index b15761ff410..fa25e39fe54 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -492,6 +492,14 @@ void __cpuinit start_secondary(void)
*/
set_cpu_sibling_map(smp_processor_id());
+ /*
+ * Wait for TSC sync to not schedule things before.
+ * We still process interrupts, which could see an inconsistent
+ * time in that window unfortunately.
+ * Do this here because TSC sync has global unprotected state.
+ */
+ tsc_sync_wait();
+
/*
* We need to hold call_lock, so there is no inconsistency
* between the time smp_call_function() determines number of
@@ -509,13 +517,6 @@ void __cpuinit start_secondary(void)
per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
unlock_ipi_call_lock();
- mb();
-
- /* Wait for TSC sync to not schedule things before.
- We still process interrupts, which could see an inconsistent
- time in that window unfortunately. */
- tsc_sync_wait();
-
cpu_idle();
}