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| author | Ingo Molnar <mingo@elte.hu> | 2008-09-10 11:32:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-10 11:32:52 +0200 |
| commit | e92b4fdacc6a7d8cc7895b81347671d5fcd6c5e1 (patch) | |
| tree | 4f84567261682d8ec2ad4102bce1ff970a6eed1a /arch/sparc64/kernel/smp.c | |
| parent | 9fcaff0e660d886e9a766460adbe558dd25de31b (diff) | |
| parent | adee14b2e1557d0a8559f29681732d05a89dfc35 (diff) | |
| download | linux-e92b4fdacc6a7d8cc7895b81347671d5fcd6c5e1.tar.gz linux-e92b4fdacc6a7d8cc7895b81347671d5fcd6c5e1.tar.bz2 linux-e92b4fdacc6a7d8cc7895b81347671d5fcd6c5e1.zip | |
Merge commit 'v2.6.27-rc6' into x86/iommu
Diffstat (limited to 'arch/sparc64/kernel/smp.c')
| -rw-r--r-- | arch/sparc64/kernel/smp.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index 743ccad61c60..2be166c544ca 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -80,8 +80,6 @@ void smp_bogo(struct seq_file *m) i, cpu_data(i).clock_tick); } -static __cacheline_aligned_in_smp DEFINE_SPINLOCK(call_lock); - extern void setup_sparc64_timer(void); static volatile unsigned long callin_flag = 0; @@ -120,9 +118,9 @@ void __cpuinit smp_callin(void) while (!cpu_isset(cpuid, smp_commenced_mask)) rmb(); - spin_lock(&call_lock); + ipi_call_lock(); cpu_set(cpuid, cpu_online_map); - spin_unlock(&call_lock); + ipi_call_unlock(); /* idle thread is expected to have preempt disabled */ preempt_disable(); @@ -1305,10 +1303,6 @@ int __cpu_disable(void) c->core_id = 0; c->proc_id = -1; - spin_lock(&call_lock); - cpu_clear(cpu, cpu_online_map); - spin_unlock(&call_lock); - smp_wmb(); /* Make sure no interrupts point to this cpu. */ @@ -1318,6 +1312,10 @@ int __cpu_disable(void) mdelay(1); local_irq_disable(); + ipi_call_lock(); + cpu_clear(cpu, cpu_online_map); + ipi_call_unlock(); + return 0; } |