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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-09 14:53:07 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-09 14:53:07 -0500
commit29a41e9e029d21c306e3ad6e723700348b04706a (patch)
tree3c7f807016a1e16c70992bbcba1269ac4cfe2fa5 /arch/parisc/kernel/smp.c
parentd9e8a3a5b8298a3c814ed37ac5756e6f67b6be41 (diff)
parentae16489eb1175066c8f3008fc3c0396c525e1906 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: parisc: export length of os_hpmc vector parisc: fix kernel crash (protection id trap) when compiling ruby1.9 parisc: Use DEFINE_SPINLOCK parisc: add uevent helper for parisc bus parisc: fix ipv6 checksum parisc: quiet palo not-found message from "which" parisc: Replace NR_CPUS in parisc code parisc: trivial fixes parisc: fix braino in commit adding __space_to_prot parisc: factor out sid to protid conversion parisc: use leX_to_cpu in place of __fswabX parisc: fix GFP_KERNEL use while atomic in unwinder parisc: remove dead BIO_VMERGE_BOUNDARY and BIO_VMERGE_MAX_SIZE definitions parisc: set_time() catch errors parisc: use the new byteorder headers parisc: drivers/parisc/: make code static parisc: lib/: make code static
Diffstat (limited to 'arch/parisc/kernel/smp.c')
-rw-r--r--arch/parisc/kernel/smp.c32
1 files changed, 15 insertions, 17 deletions
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 80bc000523fa..9995d7ed5819 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -56,16 +56,17 @@ static int smp_debug_lvl = 0;
56 if (lvl >= smp_debug_lvl) \ 56 if (lvl >= smp_debug_lvl) \
57 printk(printargs); 57 printk(printargs);
58#else 58#else
59#define smp_debug(lvl, ...) 59#define smp_debug(lvl, ...) do { } while(0)
60#endif /* DEBUG_SMP */ 60#endif /* DEBUG_SMP */
61 61
62DEFINE_SPINLOCK(smp_lock); 62DEFINE_SPINLOCK(smp_lock);
63 63
64volatile struct task_struct *smp_init_current_idle_task; 64volatile struct task_struct *smp_init_current_idle_task;
65 65
66static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */ 66/* track which CPU is booting */
67static volatile int cpu_now_booting __cpuinitdata;
67 68
68static int parisc_max_cpus __read_mostly = 1; 69static int parisc_max_cpus __cpuinitdata = 1;
69 70
70DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED; 71DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
71 72
@@ -123,7 +124,7 @@ irqreturn_t
123ipi_interrupt(int irq, void *dev_id) 124ipi_interrupt(int irq, void *dev_id)
124{ 125{
125 int this_cpu = smp_processor_id(); 126 int this_cpu = smp_processor_id();
126 struct cpuinfo_parisc *p = &cpu_data[this_cpu]; 127 struct cpuinfo_parisc *p = &per_cpu(cpu_data, this_cpu);
127 unsigned long ops; 128 unsigned long ops;
128 unsigned long flags; 129 unsigned long flags;
129 130
@@ -202,13 +203,13 @@ ipi_interrupt(int irq, void *dev_id)
202static inline void 203static inline void
203ipi_send(int cpu, enum ipi_message_type op) 204ipi_send(int cpu, enum ipi_message_type op)
204{ 205{
205 struct cpuinfo_parisc *p = &cpu_data[cpu]; 206 struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpu);
206 spinlock_t *lock = &per_cpu(ipi_lock, cpu); 207 spinlock_t *lock = &per_cpu(ipi_lock, cpu);
207 unsigned long flags; 208 unsigned long flags;
208 209
209 spin_lock_irqsave(lock, flags); 210 spin_lock_irqsave(lock, flags);
210 p->pending_ipi |= 1 << op; 211 p->pending_ipi |= 1 << op;
211 gsc_writel(IPI_IRQ - CPU_IRQ_BASE, cpu_data[cpu].hpa); 212 gsc_writel(IPI_IRQ - CPU_IRQ_BASE, p->hpa);
212 spin_unlock_irqrestore(lock, flags); 213 spin_unlock_irqrestore(lock, flags);
213} 214}
214 215
@@ -224,10 +225,7 @@ send_IPI_mask(cpumask_t mask, enum ipi_message_type op)
224static inline void 225static inline void
225send_IPI_single(int dest_cpu, enum ipi_message_type op) 226send_IPI_single(int dest_cpu, enum ipi_message_type op)
226{ 227{
227 if (dest_cpu == NO_PROC_ID) { 228 BUG_ON(dest_cpu == NO_PROC_ID);
228 BUG();
229 return;
230 }
231 229
232 ipi_send(dest_cpu, op); 230 ipi_send(dest_cpu, op);
233} 231}
@@ -309,8 +307,7 @@ smp_cpu_init(int cpunum)
309 /* Initialise the idle task for this CPU */ 307 /* Initialise the idle task for this CPU */
310 atomic_inc(&init_mm.mm_count); 308 atomic_inc(&init_mm.mm_count);
311 current->active_mm = &init_mm; 309 current->active_mm = &init_mm;
312 if(current->mm) 310 BUG_ON(current->mm);
313 BUG();
314 enter_lazy_tlb(&init_mm, current); 311 enter_lazy_tlb(&init_mm, current);
315 312
316 init_IRQ(); /* make sure no IRQs are enabled or pending */ 313 init_IRQ(); /* make sure no IRQs are enabled or pending */
@@ -345,6 +342,7 @@ void __init smp_callin(void)
345 */ 342 */
346int __cpuinit smp_boot_one_cpu(int cpuid) 343int __cpuinit smp_boot_one_cpu(int cpuid)
347{ 344{
345 const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
348 struct task_struct *idle; 346 struct task_struct *idle;
349 long timeout; 347 long timeout;
350 348
@@ -376,7 +374,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
376 smp_init_current_idle_task = idle ; 374 smp_init_current_idle_task = idle ;
377 mb(); 375 mb();
378 376
379 printk("Releasing cpu %d now, hpa=%lx\n", cpuid, cpu_data[cpuid].hpa); 377 printk(KERN_INFO "Releasing cpu %d now, hpa=%lx\n", cpuid, p->hpa);
380 378
381 /* 379 /*
382 ** This gets PDC to release the CPU from a very tight loop. 380 ** This gets PDC to release the CPU from a very tight loop.
@@ -387,7 +385,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
387 ** EIR{0}). MEM_RENDEZ is valid only when it is nonzero and the 385 ** EIR{0}). MEM_RENDEZ is valid only when it is nonzero and the
388 ** contents of memory are valid." 386 ** contents of memory are valid."
389 */ 387 */
390 gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, cpu_data[cpuid].hpa); 388 gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, p->hpa);
391 mb(); 389 mb();
392 390
393 /* 391 /*
@@ -419,12 +417,12 @@ alive:
419 return 0; 417 return 0;
420} 418}
421 419
422void __devinit smp_prepare_boot_cpu(void) 420void __init smp_prepare_boot_cpu(void)
423{ 421{
424 int bootstrap_processor=cpu_data[0].cpuid; /* CPU ID of BSP */ 422 int bootstrap_processor = per_cpu(cpu_data, 0).cpuid;
425 423
426 /* Setup BSP mappings */ 424 /* Setup BSP mappings */
427 printk("SMP: bootstrap CPU ID is %d\n",bootstrap_processor); 425 printk(KERN_INFO "SMP: bootstrap CPU ID is %d\n", bootstrap_processor);
428 426
429 cpu_set(bootstrap_processor, cpu_online_map); 427 cpu_set(bootstrap_processor, cpu_online_map);
430 cpu_set(bootstrap_processor, cpu_present_map); 428 cpu_set(bootstrap_processor, cpu_present_map);