X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=init%2Fmain.c;h=1687b0167c4a4c458c0b7956a106fc678813c431;hb=f17a32e97eaa924754bf4463aee588a3890c7ae0;hp=2df3f0617fdc89fe8377d5d76fb9214c1e8f79a8;hpb=321a8e9dcb714f3c350ba55e41ed447bf3f05fac;p=linux-2.6

diff --git a/init/main.c b/init/main.c
index 2df3f0617f..1687b0167c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -359,6 +359,7 @@ static void __init smp_init(void)
 #endif
 
 static inline void setup_per_cpu_areas(void) { }
+static inline void setup_nr_cpu_ids(void) { }
 static inline void smp_prepare_cpus(unsigned int maxcpus) { }
 
 #else
@@ -368,6 +369,21 @@ cpumask_t cpu_mask_all __read_mostly = CPU_MASK_ALL;
 EXPORT_SYMBOL(cpu_mask_all);
 #endif
 
+/* Setup number of possible processor ids */
+int nr_cpu_ids __read_mostly = NR_CPUS;
+EXPORT_SYMBOL(nr_cpu_ids);
+
+/* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
+static void __init setup_nr_cpu_ids(void)
+{
+	int cpu, highest_cpu = 0;
+
+	for_each_possible_cpu(cpu)
+		highest_cpu = cpu;
+
+	nr_cpu_ids = highest_cpu + 1;
+}
+
 #ifndef CONFIG_HAVE_SETUP_PER_CPU_AREA
 unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
 
@@ -505,7 +521,11 @@ static void __init boot_cpu_init(void)
 	cpu_set(cpu, cpu_possible_map);
 }
 
-void __init __attribute__((weak)) smp_setup_processor_id(void)
+void __init __weak smp_setup_processor_id(void)
+{
+}
+
+void __init __weak thread_info_cache_init(void)
 {
 }
 
@@ -542,6 +562,7 @@ asmlinkage void __init start_kernel(void)
 	setup_command_line(command_line);
 	unwind_setup();
 	setup_per_cpu_areas();
+	setup_nr_cpu_ids();
 	smp_prepare_boot_cpu();	/* arch-specific boot-cpu hooks */
 
 	/*
@@ -628,6 +649,7 @@ asmlinkage void __init start_kernel(void)
 	if (efi_enabled)
 		efi_enter_virtual_mode();
 #endif
+	thread_info_cache_init();
 	fork_init(num_physpages);
 	proc_caches_init();
 	buffer_init();