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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2006-02-08 03:55:06 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-08 10:57:37 -0500
commit328c2a8a39e1ba43a6e54e43fc752f7035779561 (patch)
tree4d59799c3208fe2c08ceb0faad7a6f3db0e975df /arch/alpha
parent9934a7939e1cdce62ece9ef7d25ebb3c55547fac (diff)
[PATCH] alpha: set cpu_possible_map much earlier
All the percpu data structure walkers want cpu_possible_map to be initialized early, but alpha instead populated "hwrpb_cpu_present_mask" early in setup_smp(), and then initialized cpu_possible_map only much later. Thanks go to Heiko Carstens and Dipankar Sarma for noticing. This fixes it and we can get rid of hwrpb_cpu_present_mask entirely. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/smp.c25
1 files changed, 4 insertions, 21 deletions
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 4b873527ce1c..02c2db08114a 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -73,9 +73,6 @@ cpumask_t cpu_online_map;
73 73
74EXPORT_SYMBOL(cpu_online_map); 74EXPORT_SYMBOL(cpu_online_map);
75 75
76/* cpus reported in the hwrpb */
77static unsigned long hwrpb_cpu_present_mask __initdata = 0;
78
79int smp_num_probed; /* Internal processor count */ 76int smp_num_probed; /* Internal processor count */
80int smp_num_cpus = 1; /* Number that came online. */ 77int smp_num_cpus = 1; /* Number that came online. */
81 78
@@ -442,7 +439,7 @@ setup_smp(void)
442 if ((cpu->flags & 0x1cc) == 0x1cc) { 439 if ((cpu->flags & 0x1cc) == 0x1cc) {
443 smp_num_probed++; 440 smp_num_probed++;
444 /* Assume here that "whami" == index */ 441 /* Assume here that "whami" == index */
445 hwrpb_cpu_present_mask |= (1UL << i); 442 cpu_set(i, cpu_possible_map);
446 cpu->pal_revision = boot_cpu_palrev; 443 cpu->pal_revision = boot_cpu_palrev;
447 } 444 }
448 445
@@ -453,12 +450,12 @@ setup_smp(void)
453 } 450 }
454 } else { 451 } else {
455 smp_num_probed = 1; 452 smp_num_probed = 1;
456 hwrpb_cpu_present_mask = (1UL << boot_cpuid); 453 cpu_set(boot_cpuid, cpu_possible_map);
457 } 454 }
458 cpu_present_mask = cpumask_of_cpu(boot_cpuid); 455 cpu_present_mask = cpumask_of_cpu(boot_cpuid);
459 456
460 printk(KERN_INFO "SMP: %d CPUs probed -- cpu_present_mask = %lx\n", 457 printk(KERN_INFO "SMP: %d CPUs probed -- cpu_present_mask = %lx\n",
461 smp_num_probed, hwrpb_cpu_present_mask); 458 smp_num_probed, cpu_possible_map.bits[0]);
462} 459}
463 460
464/* 461/*
@@ -467,8 +464,6 @@ setup_smp(void)
467void __init 464void __init
468smp_prepare_cpus(unsigned int max_cpus) 465smp_prepare_cpus(unsigned int max_cpus)
469{ 466{
470 int cpu_count, i;
471
472 /* Take care of some initial bookkeeping. */ 467 /* Take care of some initial bookkeeping. */
473 memset(ipi_data, 0, sizeof(ipi_data)); 468 memset(ipi_data, 0, sizeof(ipi_data));
474 469
@@ -486,19 +481,7 @@ smp_prepare_cpus(unsigned int max_cpus)
486 481
487 printk(KERN_INFO "SMP starting up secondaries.\n"); 482 printk(KERN_INFO "SMP starting up secondaries.\n");
488 483
489 cpu_count = 1; 484 smp_num_cpus = smp_num_probed;
490 for (i = 0; (i < NR_CPUS) && (cpu_count < max_cpus); i++) {
491 if (i == boot_cpuid)
492 continue;
493
494 if (((hwrpb_cpu_present_mask >> i) & 1) == 0)
495 continue;
496
497 cpu_set(i, cpu_possible_map);
498 cpu_count++;
499 }
500
501 smp_num_cpus = cpu_count;
502} 485}
503 486
504void __devinit 487void __devinit