[PATCH] add smp_setup_processor_id()

Presently, smp_processor_id() isn't necessarily set up until setup_arch(). But it's used in boot_cpu_init() and printk() and perhaps in other places, prior to setup_arch() being called. So provide a new smp_setup_processor_id() which is called before anything else, wire it up for Voyager (which boots on a CPU other than #0, and broke). Cc: James Bottomley <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Jun 30, 2006 · 033ab7f · 033ab7f
1 parent a1836a4
commit 033ab7f
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diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
@@ -1938,3 +1938,9 @@ smp_cpus_done(unsigned int max_cpus)
 {
 	zap_low_mappings();
 }
+
+void __init
+smp_setup_processor_id(void)
+{
+	current_thread_info()->cpu = hard_smp_processor_id();
+}
diff --git a/include/linux/smp.h b/include/linux/smp.h
@@ -125,4 +125,6 @@ static inline void smp_send_reschedule(int cpu) { }
 #define put_cpu()		preempt_enable()
 #define put_cpu_no_resched()	preempt_enable_no_resched()
 
+void smp_setup_processor_id(void);
+
 #endif /* __LINUX_SMP_H */
diff --git a/init/main.c b/init/main.c
@@ -446,10 +446,17 @@ static void __init boot_cpu_init(void)
 	cpu_set(cpu, cpu_possible_map);
 }
 
+void __init __attribute__((weak)) smp_setup_processor_id(void)
+{
+}
+
 asmlinkage void __init start_kernel(void)
 {
 	char * command_line;
 	extern struct kernel_param __start___param[], __stop___param[];
+
+	smp_setup_processor_id();
+
 /*
  * Interrupts are still disabled. Do necessary setups, then
  * enable them