1#include <linux/device.h>
2#include <linux/cpu.h>
3#include <linux/smp.h>
4#include <linux/percpu.h>
5#include <linux/init.h>
6#include <linux/sched.h>
7#include <linux/export.h>
8#include <linux/nodemask.h>
9#include <linux/cpumask.h>
10#include <linux/notifier.h>
11
12#include <asm/current.h>
13#include <asm/processor.h>
14#include <asm/cputable.h>
15#include <asm/hvcall.h>
16#include <asm/prom.h>
17#include <asm/machdep.h>
18#include <asm/smp.h>
19#include <asm/pmc.h>
20
21#include "cacheinfo.h"
22
23#ifdef CONFIG_PPC64
24#include <asm/paca.h>
25#include <asm/lppaca.h>
26#endif
27
28static DEFINE_PER_CPU(struct cpu, cpu_devices);
29
30
31
32
33
34#ifdef CONFIG_PPC64
35
36
37DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
38
39static ssize_t store_smt_snooze_delay(struct device *dev,
40 struct device_attribute *attr,
41 const char *buf,
42 size_t count)
43{
44 struct cpu *cpu = container_of(dev, struct cpu, dev);
45 ssize_t ret;
46 long snooze;
47
48 ret = sscanf(buf, "%ld", &snooze);
49 if (ret != 1)
50 return -EINVAL;
51
52 per_cpu(smt_snooze_delay, cpu->dev.id) = snooze;
53 update_smt_snooze_delay(snooze);
54
55 return count;
56}
57
58static ssize_t show_smt_snooze_delay(struct device *dev,
59 struct device_attribute *attr,
60 char *buf)
61{
62 struct cpu *cpu = container_of(dev, struct cpu, dev);
63
64 return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->dev.id));
65}
66
67static DEVICE_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
68 store_smt_snooze_delay);
69
70static int __init setup_smt_snooze_delay(char *str)
71{
72 unsigned int cpu;
73 long snooze;
74
75 if (!cpu_has_feature(CPU_FTR_SMT))
76 return 1;
77
78 snooze = simple_strtol(str, NULL, 10);
79 for_each_possible_cpu(cpu)
80 per_cpu(smt_snooze_delay, cpu) = snooze;
81
82 return 1;
83}
84__setup("smt-snooze-delay=", setup_smt_snooze_delay);
85
86#endif
87
88
89
90
91
92
93static DEFINE_PER_CPU(char, pmcs_enabled);
94
95void ppc_enable_pmcs(void)
96{
97 ppc_set_pmu_inuse(1);
98
99
100 if (__get_cpu_var(pmcs_enabled))
101 return;
102
103 __get_cpu_var(pmcs_enabled) = 1;
104
105 if (ppc_md.enable_pmcs)
106 ppc_md.enable_pmcs();
107}
108EXPORT_SYMBOL(ppc_enable_pmcs);
109
110#define SYSFS_PMCSETUP(NAME, ADDRESS) \
111static void read_##NAME(void *val) \
112{ \
113 *(unsigned long *)val = mfspr(ADDRESS); \
114} \
115static void write_##NAME(void *val) \
116{ \
117 ppc_enable_pmcs(); \
118 mtspr(ADDRESS, *(unsigned long *)val); \
119} \
120static ssize_t show_##NAME(struct device *dev, \
121 struct device_attribute *attr, \
122 char *buf) \
123{ \
124 struct cpu *cpu = container_of(dev, struct cpu, dev); \
125 unsigned long val; \
126 smp_call_function_single(cpu->dev.id, read_##NAME, &val, 1); \
127 return sprintf(buf, "%lx\n", val); \
128} \
129static ssize_t __used \
130 store_##NAME(struct device *dev, struct device_attribute *attr, \
131 const char *buf, size_t count) \
132{ \
133 struct cpu *cpu = container_of(dev, struct cpu, dev); \
134 unsigned long val; \
135 int ret = sscanf(buf, "%lx", &val); \
136 if (ret != 1) \
137 return -EINVAL; \
138 smp_call_function_single(cpu->dev.id, write_##NAME, &val, 1); \
139 return count; \
140}
141
142
143
144
145
146
147#if defined(CONFIG_PPC64)
148#define HAS_PPC_PMC_CLASSIC 1
149#define HAS_PPC_PMC_IBM 1
150#define HAS_PPC_PMC_PA6T 1
151#elif defined(CONFIG_6xx)
152#define HAS_PPC_PMC_CLASSIC 1
153#define HAS_PPC_PMC_IBM 1
154#define HAS_PPC_PMC_G4 1
155#endif
156
157
158#ifdef HAS_PPC_PMC_CLASSIC
159SYSFS_PMCSETUP(mmcr0, SPRN_MMCR0);
160SYSFS_PMCSETUP(mmcr1, SPRN_MMCR1);
161SYSFS_PMCSETUP(pmc1, SPRN_PMC1);
162SYSFS_PMCSETUP(pmc2, SPRN_PMC2);
163SYSFS_PMCSETUP(pmc3, SPRN_PMC3);
164SYSFS_PMCSETUP(pmc4, SPRN_PMC4);
165SYSFS_PMCSETUP(pmc5, SPRN_PMC5);
166SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
167
168#ifdef HAS_PPC_PMC_G4
169SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2);
170#endif
171
172#ifdef CONFIG_PPC64
173SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
174SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
175
176SYSFS_PMCSETUP(mmcra, SPRN_MMCRA);
177SYSFS_PMCSETUP(purr, SPRN_PURR);
178SYSFS_PMCSETUP(spurr, SPRN_SPURR);
179SYSFS_PMCSETUP(dscr, SPRN_DSCR);
180SYSFS_PMCSETUP(pir, SPRN_PIR);
181
182static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra);
183static DEVICE_ATTR(spurr, 0600, show_spurr, NULL);
184static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr);
185static DEVICE_ATTR(purr, 0600, show_purr, store_purr);
186static DEVICE_ATTR(pir, 0400, show_pir, NULL);
187
188unsigned long dscr_default = 0;
189EXPORT_SYMBOL(dscr_default);
190
191static ssize_t show_dscr_default(struct device *dev,
192 struct device_attribute *attr, char *buf)
193{
194 return sprintf(buf, "%lx\n", dscr_default);
195}
196
197static ssize_t __used store_dscr_default(struct device *dev,
198 struct device_attribute *attr, const char *buf,
199 size_t count)
200{
201 unsigned long val;
202 int ret = 0;
203
204 ret = sscanf(buf, "%lx", &val);
205 if (ret != 1)
206 return -EINVAL;
207 dscr_default = val;
208
209 return count;
210}
211
212static DEVICE_ATTR(dscr_default, 0600,
213 show_dscr_default, store_dscr_default);
214
215static void sysfs_create_dscr_default(void)
216{
217 int err = 0;
218 if (cpu_has_feature(CPU_FTR_DSCR))
219 err = device_create_file(cpu_subsys.dev_root, &dev_attr_dscr_default);
220}
221#endif
222
223#ifdef HAS_PPC_PMC_PA6T
224SYSFS_PMCSETUP(pa6t_pmc0, SPRN_PA6T_PMC0);
225SYSFS_PMCSETUP(pa6t_pmc1, SPRN_PA6T_PMC1);
226SYSFS_PMCSETUP(pa6t_pmc2, SPRN_PA6T_PMC2);
227SYSFS_PMCSETUP(pa6t_pmc3, SPRN_PA6T_PMC3);
228SYSFS_PMCSETUP(pa6t_pmc4, SPRN_PA6T_PMC4);
229SYSFS_PMCSETUP(pa6t_pmc5, SPRN_PA6T_PMC5);
230#ifdef CONFIG_DEBUG_KERNEL
231SYSFS_PMCSETUP(hid0, SPRN_HID0);
232SYSFS_PMCSETUP(hid1, SPRN_HID1);
233SYSFS_PMCSETUP(hid4, SPRN_HID4);
234SYSFS_PMCSETUP(hid5, SPRN_HID5);
235SYSFS_PMCSETUP(ima0, SPRN_PA6T_IMA0);
236SYSFS_PMCSETUP(ima1, SPRN_PA6T_IMA1);
237SYSFS_PMCSETUP(ima2, SPRN_PA6T_IMA2);
238SYSFS_PMCSETUP(ima3, SPRN_PA6T_IMA3);
239SYSFS_PMCSETUP(ima4, SPRN_PA6T_IMA4);
240SYSFS_PMCSETUP(ima5, SPRN_PA6T_IMA5);
241SYSFS_PMCSETUP(ima6, SPRN_PA6T_IMA6);
242SYSFS_PMCSETUP(ima7, SPRN_PA6T_IMA7);
243SYSFS_PMCSETUP(ima8, SPRN_PA6T_IMA8);
244SYSFS_PMCSETUP(ima9, SPRN_PA6T_IMA9);
245SYSFS_PMCSETUP(imaat, SPRN_PA6T_IMAAT);
246SYSFS_PMCSETUP(btcr, SPRN_PA6T_BTCR);
247SYSFS_PMCSETUP(pccr, SPRN_PA6T_PCCR);
248SYSFS_PMCSETUP(rpccr, SPRN_PA6T_RPCCR);
249SYSFS_PMCSETUP(der, SPRN_PA6T_DER);
250SYSFS_PMCSETUP(mer, SPRN_PA6T_MER);
251SYSFS_PMCSETUP(ber, SPRN_PA6T_BER);
252SYSFS_PMCSETUP(ier, SPRN_PA6T_IER);
253SYSFS_PMCSETUP(sier, SPRN_PA6T_SIER);
254SYSFS_PMCSETUP(siar, SPRN_PA6T_SIAR);
255SYSFS_PMCSETUP(tsr0, SPRN_PA6T_TSR0);
256SYSFS_PMCSETUP(tsr1, SPRN_PA6T_TSR1);
257SYSFS_PMCSETUP(tsr2, SPRN_PA6T_TSR2);
258SYSFS_PMCSETUP(tsr3, SPRN_PA6T_TSR3);
259#endif
260#endif
261
262#ifdef HAS_PPC_PMC_IBM
263static struct device_attribute ibm_common_attrs[] = {
264 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
265 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
266};
267#endif
268
269#ifdef HAS_PPC_PMC_G4
270static struct device_attribute g4_common_attrs[] = {
271 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
272 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
273 __ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2),
274};
275#endif
276
277static struct device_attribute classic_pmc_attrs[] = {
278 __ATTR(pmc1, 0600, show_pmc1, store_pmc1),
279 __ATTR(pmc2, 0600, show_pmc2, store_pmc2),
280 __ATTR(pmc3, 0600, show_pmc3, store_pmc3),
281 __ATTR(pmc4, 0600, show_pmc4, store_pmc4),
282 __ATTR(pmc5, 0600, show_pmc5, store_pmc5),
283 __ATTR(pmc6, 0600, show_pmc6, store_pmc6),
284#ifdef CONFIG_PPC64
285 __ATTR(pmc7, 0600, show_pmc7, store_pmc7),
286 __ATTR(pmc8, 0600, show_pmc8, store_pmc8),
287#endif
288};
289
290#ifdef HAS_PPC_PMC_PA6T
291static struct device_attribute pa6t_attrs[] = {
292 __ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0),
293 __ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1),
294 __ATTR(pmc0, 0600, show_pa6t_pmc0, store_pa6t_pmc0),
295 __ATTR(pmc1, 0600, show_pa6t_pmc1, store_pa6t_pmc1),
296 __ATTR(pmc2, 0600, show_pa6t_pmc2, store_pa6t_pmc2),
297 __ATTR(pmc3, 0600, show_pa6t_pmc3, store_pa6t_pmc3),
298 __ATTR(pmc4, 0600, show_pa6t_pmc4, store_pa6t_pmc4),
299 __ATTR(pmc5, 0600, show_pa6t_pmc5, store_pa6t_pmc5),
300#ifdef CONFIG_DEBUG_KERNEL
301 __ATTR(hid0, 0600, show_hid0, store_hid0),
302 __ATTR(hid1, 0600, show_hid1, store_hid1),
303 __ATTR(hid4, 0600, show_hid4, store_hid4),
304 __ATTR(hid5, 0600, show_hid5, store_hid5),
305 __ATTR(ima0, 0600, show_ima0, store_ima0),
306 __ATTR(ima1, 0600, show_ima1, store_ima1),
307 __ATTR(ima2, 0600, show_ima2, store_ima2),
308 __ATTR(ima3, 0600, show_ima3, store_ima3),
309 __ATTR(ima4, 0600, show_ima4, store_ima4),
310 __ATTR(ima5, 0600, show_ima5, store_ima5),
311 __ATTR(ima6, 0600, show_ima6, store_ima6),
312 __ATTR(ima7, 0600, show_ima7, store_ima7),
313 __ATTR(ima8, 0600, show_ima8, store_ima8),
314 __ATTR(ima9, 0600, show_ima9, store_ima9),
315 __ATTR(imaat, 0600, show_imaat, store_imaat),
316 __ATTR(btcr, 0600, show_btcr, store_btcr),
317 __ATTR(pccr, 0600, show_pccr, store_pccr),
318 __ATTR(rpccr, 0600, show_rpccr, store_rpccr),
319 __ATTR(der, 0600, show_der, store_der),
320 __ATTR(mer, 0600, show_mer, store_mer),
321 __ATTR(ber, 0600, show_ber, store_ber),
322 __ATTR(ier, 0600, show_ier, store_ier),
323 __ATTR(sier, 0600, show_sier, store_sier),
324 __ATTR(siar, 0600, show_siar, store_siar),
325 __ATTR(tsr0, 0600, show_tsr0, store_tsr0),
326 __ATTR(tsr1, 0600, show_tsr1, store_tsr1),
327 __ATTR(tsr2, 0600, show_tsr2, store_tsr2),
328 __ATTR(tsr3, 0600, show_tsr3, store_tsr3),
329#endif
330};
331#endif
332#endif
333
334static void __cpuinit register_cpu_online(unsigned int cpu)
335{
336 struct cpu *c = &per_cpu(cpu_devices, cpu);
337 struct device *s = &c->dev;
338 struct device_attribute *attrs, *pmc_attrs;
339 int i, nattrs;
340
341#ifdef CONFIG_PPC64
342 if (cpu_has_feature(CPU_FTR_SMT))
343 device_create_file(s, &dev_attr_smt_snooze_delay);
344#endif
345
346
347 switch (cur_cpu_spec->pmc_type) {
348#ifdef HAS_PPC_PMC_IBM
349 case PPC_PMC_IBM:
350 attrs = ibm_common_attrs;
351 nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute);
352 pmc_attrs = classic_pmc_attrs;
353 break;
354#endif
355#ifdef HAS_PPC_PMC_G4
356 case PPC_PMC_G4:
357 attrs = g4_common_attrs;
358 nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute);
359 pmc_attrs = classic_pmc_attrs;
360 break;
361#endif
362#ifdef HAS_PPC_PMC_PA6T
363 case PPC_PMC_PA6T:
364
365 attrs = pa6t_attrs;
366 nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute);
367 pmc_attrs = NULL;
368 break;
369#endif
370 default:
371 attrs = NULL;
372 nattrs = 0;
373 pmc_attrs = NULL;
374 }
375
376 for (i = 0; i < nattrs; i++)
377 device_create_file(s, &attrs[i]);
378
379 if (pmc_attrs)
380 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
381 device_create_file(s, &pmc_attrs[i]);
382
383#ifdef CONFIG_PPC64
384 if (cpu_has_feature(CPU_FTR_MMCRA))
385 device_create_file(s, &dev_attr_mmcra);
386
387 if (cpu_has_feature(CPU_FTR_PURR))
388 device_create_file(s, &dev_attr_purr);
389
390 if (cpu_has_feature(CPU_FTR_SPURR))
391 device_create_file(s, &dev_attr_spurr);
392
393 if (cpu_has_feature(CPU_FTR_DSCR))
394 device_create_file(s, &dev_attr_dscr);
395
396 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
397 device_create_file(s, &dev_attr_pir);
398#endif
399
400 cacheinfo_cpu_online(cpu);
401}
402
403#ifdef CONFIG_HOTPLUG_CPU
404static void unregister_cpu_online(unsigned int cpu)
405{
406 struct cpu *c = &per_cpu(cpu_devices, cpu);
407 struct device *s = &c->dev;
408 struct device_attribute *attrs, *pmc_attrs;
409 int i, nattrs;
410
411 BUG_ON(!c->hotpluggable);
412
413#ifdef CONFIG_PPC64
414 if (cpu_has_feature(CPU_FTR_SMT))
415 device_remove_file(s, &dev_attr_smt_snooze_delay);
416#endif
417
418
419 switch (cur_cpu_spec->pmc_type) {
420#ifdef HAS_PPC_PMC_IBM
421 case PPC_PMC_IBM:
422 attrs = ibm_common_attrs;
423 nattrs = sizeof(ibm_common_attrs) / sizeof(struct device_attribute);
424 pmc_attrs = classic_pmc_attrs;
425 break;
426#endif
427#ifdef HAS_PPC_PMC_G4
428 case PPC_PMC_G4:
429 attrs = g4_common_attrs;
430 nattrs = sizeof(g4_common_attrs) / sizeof(struct device_attribute);
431 pmc_attrs = classic_pmc_attrs;
432 break;
433#endif
434#ifdef HAS_PPC_PMC_PA6T
435 case PPC_PMC_PA6T:
436
437 attrs = pa6t_attrs;
438 nattrs = sizeof(pa6t_attrs) / sizeof(struct device_attribute);
439 pmc_attrs = NULL;
440 break;
441#endif
442 default:
443 attrs = NULL;
444 nattrs = 0;
445 pmc_attrs = NULL;
446 }
447
448 for (i = 0; i < nattrs; i++)
449 device_remove_file(s, &attrs[i]);
450
451 if (pmc_attrs)
452 for (i = 0; i < cur_cpu_spec->num_pmcs; i++)
453 device_remove_file(s, &pmc_attrs[i]);
454
455#ifdef CONFIG_PPC64
456 if (cpu_has_feature(CPU_FTR_MMCRA))
457 device_remove_file(s, &dev_attr_mmcra);
458
459 if (cpu_has_feature(CPU_FTR_PURR))
460 device_remove_file(s, &dev_attr_purr);
461
462 if (cpu_has_feature(CPU_FTR_SPURR))
463 device_remove_file(s, &dev_attr_spurr);
464
465 if (cpu_has_feature(CPU_FTR_DSCR))
466 device_remove_file(s, &dev_attr_dscr);
467
468 if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
469 device_remove_file(s, &dev_attr_pir);
470#endif
471
472 cacheinfo_cpu_offline(cpu);
473}
474
475#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
476ssize_t arch_cpu_probe(const char *buf, size_t count)
477{
478 if (ppc_md.cpu_probe)
479 return ppc_md.cpu_probe(buf, count);
480
481 return -EINVAL;
482}
483
484ssize_t arch_cpu_release(const char *buf, size_t count)
485{
486 if (ppc_md.cpu_release)
487 return ppc_md.cpu_release(buf, count);
488
489 return -EINVAL;
490}
491#endif
492
493#endif
494
495static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
496 unsigned long action, void *hcpu)
497{
498 unsigned int cpu = (unsigned int)(long)hcpu;
499
500 switch (action) {
501 case CPU_ONLINE:
502 case CPU_ONLINE_FROZEN:
503 register_cpu_online(cpu);
504 break;
505#ifdef CONFIG_HOTPLUG_CPU
506 case CPU_DEAD:
507 case CPU_DEAD_FROZEN:
508 unregister_cpu_online(cpu);
509 break;
510#endif
511 }
512 return NOTIFY_OK;
513}
514
515static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
516 .notifier_call = sysfs_cpu_notify,
517};
518
519static DEFINE_MUTEX(cpu_mutex);
520
521int cpu_add_dev_attr(struct device_attribute *attr)
522{
523 int cpu;
524
525 mutex_lock(&cpu_mutex);
526
527 for_each_possible_cpu(cpu) {
528 device_create_file(get_cpu_device(cpu), attr);
529 }
530
531 mutex_unlock(&cpu_mutex);
532 return 0;
533}
534EXPORT_SYMBOL_GPL(cpu_add_dev_attr);
535
536int cpu_add_dev_attr_group(struct attribute_group *attrs)
537{
538 int cpu;
539 struct device *dev;
540 int ret;
541
542 mutex_lock(&cpu_mutex);
543
544 for_each_possible_cpu(cpu) {
545 dev = get_cpu_device(cpu);
546 ret = sysfs_create_group(&dev->kobj, attrs);
547 WARN_ON(ret != 0);
548 }
549
550 mutex_unlock(&cpu_mutex);
551 return 0;
552}
553EXPORT_SYMBOL_GPL(cpu_add_dev_attr_group);
554
555
556void cpu_remove_dev_attr(struct device_attribute *attr)
557{
558 int cpu;
559
560 mutex_lock(&cpu_mutex);
561
562 for_each_possible_cpu(cpu) {
563 device_remove_file(get_cpu_device(cpu), attr);
564 }
565
566 mutex_unlock(&cpu_mutex);
567}
568EXPORT_SYMBOL_GPL(cpu_remove_dev_attr);
569
570void cpu_remove_dev_attr_group(struct attribute_group *attrs)
571{
572 int cpu;
573 struct device *dev;
574
575 mutex_lock(&cpu_mutex);
576
577 for_each_possible_cpu(cpu) {
578 dev = get_cpu_device(cpu);
579 sysfs_remove_group(&dev->kobj, attrs);
580 }
581
582 mutex_unlock(&cpu_mutex);
583}
584EXPORT_SYMBOL_GPL(cpu_remove_dev_attr_group);
585
586
587
588
589#ifdef CONFIG_NUMA
590static void register_nodes(void)
591{
592 int i;
593
594 for (i = 0; i < MAX_NUMNODES; i++)
595 register_one_node(i);
596}
597
598int sysfs_add_device_to_node(struct device *dev, int nid)
599{
600 struct node *node = &node_devices[nid];
601 return sysfs_create_link(&node->dev.kobj, &dev->kobj,
602 kobject_name(&dev->kobj));
603}
604EXPORT_SYMBOL_GPL(sysfs_add_device_to_node);
605
606void sysfs_remove_device_from_node(struct device *dev, int nid)
607{
608 struct node *node = &node_devices[nid];
609 sysfs_remove_link(&node->dev.kobj, kobject_name(&dev->kobj));
610}
611EXPORT_SYMBOL_GPL(sysfs_remove_device_from_node);
612
613#else
614static void register_nodes(void)
615{
616 return;
617}
618
619#endif
620
621
622static ssize_t show_physical_id(struct device *dev,
623 struct device_attribute *attr, char *buf)
624{
625 struct cpu *cpu = container_of(dev, struct cpu, dev);
626
627 return sprintf(buf, "%d\n", get_hard_smp_processor_id(cpu->dev.id));
628}
629static DEVICE_ATTR(physical_id, 0444, show_physical_id, NULL);
630
631static int __init topology_init(void)
632{
633 int cpu;
634
635 register_nodes();
636 register_cpu_notifier(&sysfs_cpu_nb);
637
638 for_each_possible_cpu(cpu) {
639 struct cpu *c = &per_cpu(cpu_devices, cpu);
640
641
642
643
644
645
646
647
648 if (ppc_md.cpu_die)
649 c->hotpluggable = 1;
650
651 if (cpu_online(cpu) || c->hotpluggable) {
652 register_cpu(c, cpu);
653
654 device_create_file(&c->dev, &dev_attr_physical_id);
655 }
656
657 if (cpu_online(cpu))
658 register_cpu_online(cpu);
659 }
660#ifdef CONFIG_PPC64
661 sysfs_create_dscr_default();
662#endif
663
664 return 0;
665}
666subsys_initcall(topology_init);
667
