[PATCH] minimal alpha pt_regs fixes
[linux-2.6.git] / arch / alpha / kernel / smp.c
index 4b87352..596780e 100644 (file)
@@ -68,14 +68,10 @@ enum ipi_message_type {
 static int smp_secondary_alive __initdata = 0;
 
 /* Which cpus ids came online.  */
-cpumask_t cpu_present_mask;
 cpumask_t cpu_online_map;
 
 EXPORT_SYMBOL(cpu_online_map);
 
-/* cpus reported in the hwrpb */
-static unsigned long hwrpb_cpu_present_mask __initdata = 0;
-
 int smp_num_probed;            /* Internal processor count */
 int smp_num_cpus = 1;          /* Number that came online.  */
 
@@ -442,7 +438,7 @@ setup_smp(void)
                        if ((cpu->flags & 0x1cc) == 0x1cc) {
                                smp_num_probed++;
                                /* Assume here that "whami" == index */
-                               hwrpb_cpu_present_mask |= (1UL << i);
+                               cpu_set(i, cpu_present_map);
                                cpu->pal_revision = boot_cpu_palrev;
                        }
 
@@ -453,12 +449,10 @@ setup_smp(void)
                }
        } else {
                smp_num_probed = 1;
-               hwrpb_cpu_present_mask = (1UL << boot_cpuid);
        }
-       cpu_present_mask = cpumask_of_cpu(boot_cpuid);
 
-       printk(KERN_INFO "SMP: %d CPUs probed -- cpu_present_mask = %lx\n",
-              smp_num_probed, hwrpb_cpu_present_mask);
+       printk(KERN_INFO "SMP: %d CPUs probed -- cpu_present_map = %lx\n",
+              smp_num_probed, cpu_present_map.bits[0]);
 }
 
 /*
@@ -467,8 +461,6 @@ setup_smp(void)
 void __init
 smp_prepare_cpus(unsigned int max_cpus)
 {
-       int cpu_count, i;
-
        /* Take care of some initial bookkeeping.  */
        memset(ipi_data, 0, sizeof(ipi_data));
 
@@ -479,36 +471,19 @@ smp_prepare_cpus(unsigned int max_cpus)
 
        /* Nothing to do on a UP box, or when told not to.  */
        if (smp_num_probed == 1 || max_cpus == 0) {
-               cpu_present_mask = cpumask_of_cpu(boot_cpuid);
+               cpu_present_map = cpumask_of_cpu(boot_cpuid);
                printk(KERN_INFO "SMP mode deactivated.\n");
                return;
        }
 
        printk(KERN_INFO "SMP starting up secondaries.\n");
 
-       cpu_count = 1;
-       for (i = 0; (i < NR_CPUS) && (cpu_count < max_cpus); i++) {
-               if (i == boot_cpuid)
-                       continue;
-
-               if (((hwrpb_cpu_present_mask >> i) & 1) == 0)
-                       continue;
-
-               cpu_set(i, cpu_possible_map);
-               cpu_count++;
-       }
-
-       smp_num_cpus = cpu_count;
+       smp_num_cpus = smp_num_probed;
 }
 
 void __devinit
 smp_prepare_boot_cpu(void)
 {
-       /*
-        * Mark the boot cpu (current cpu) as both present and online
-        */ 
-       cpu_set(smp_processor_id(), cpu_present_mask);
-       cpu_set(smp_processor_id(), cpu_online_map);
 }
 
 int __devinit
@@ -540,12 +515,15 @@ smp_cpus_done(unsigned int max_cpus)
 void
 smp_percpu_timer_interrupt(struct pt_regs *regs)
 {
+       struct pt_regs *old_regs;
        int cpu = smp_processor_id();
        unsigned long user = user_mode(regs);
        struct cpuinfo_alpha *data = &cpu_data[cpu];
 
+       old_regs = set_irq_regs(regs);
+
        /* Record kernel PC.  */
-       profile_tick(CPU_PROFILING, regs);
+       profile_tick(CPU_PROFILING);
 
        if (!--data->prof_counter) {
                /* We need to make like a normal interrupt -- otherwise
@@ -559,6 +537,7 @@ smp_percpu_timer_interrupt(struct pt_regs *regs)
 
                irq_exit();
        }
+       set_irq_regs(old_regs);
 }
 
 int __init