diff options
| author | Glauber Costa | 2008-03-03 18:13:04 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2008-04-17 17:40:56 +0200 |
| commit | fc25da9ec6c910976b76c70f7604a838679f75b2 (patch) | |
| tree | 5bcf4c5fe59de6a27367c55948c7553938b43bc3 /arch/x86/kernel/smpboot_64.c | |
| parent | x86: move cpu_coregroup_map to common file (diff) | |
| download | kernel-qcow2-linux-fc25da9ec6c910976b76c70f7604a838679f75b2.tar.gz kernel-qcow2-linux-fc25da9ec6c910976b76c70f7604a838679f75b2.tar.xz kernel-qcow2-linux-fc25da9ec6c910976b76c70f7604a838679f75b2.zip | |
x86: remove vector_lock around cpu_online_map
This lock does not protect cpu_online_map, so its
length can be shortened, and in some cases, removed.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/smpboot_64.c')
| -rw-r--r-- | arch/x86/kernel/smpboot_64.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c index 1a592400d94f..ca3a3c5b64fe 100644 --- a/arch/x86/kernel/smpboot_64.c +++ b/arch/x86/kernel/smpboot_64.c @@ -261,9 +261,9 @@ void __cpuinit start_secondary(void) /* * Allow the master to continue. */ + spin_unlock(&vector_lock); cpu_set(smp_processor_id(), cpu_online_map); per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE; - spin_unlock(&vector_lock); unlock_ipi_call_lock(); @@ -879,10 +879,8 @@ int __cpu_disable(void) local_irq_disable(); remove_siblinginfo(cpu); - spin_lock(&vector_lock); /* It's now safe to remove this processor from the online map */ cpu_clear(cpu, cpu_online_map); - spin_unlock(&vector_lock); remove_cpu_from_maps(); fixup_irqs(cpu_online_map); return 0; |