Fix a crash in SMP mode by adding the missing topology_init.
Also makes /proc/cpuinfo backwards compatible with 2.4.
Signed-off-by: Bob Breuer <breuerr@xxxxxx>
---
--- linux-2.6.17-rc1/arch/sparc/kernel/setup.c.orig 2005-10-28 20:13:29.000000000 -0500
+++ linux-2.6.17-rc1/arch/sparc/kernel/setup.c 2006-04-03 23:59:43.000000000 -0500
@@ -31,6 +31,7 @@
#include <linux/console.h>
#include <linux/spinlock.h>
#include <linux/root_dev.h>
+#include <linux/cpu.h>
#include <asm/system.h>
#include <asm/io.h>
@@ -389,6 +390,8 @@ console_initcall(set_preferred_console);
extern char *sparc_cpu_type;
extern char *sparc_fpu_type;
+static int ncpus_probed;
+
static int show_cpuinfo(struct seq_file *m, void *__unused)
{
seq_printf(m,
@@ -411,7 +414,7 @@ static int show_cpuinfo(struct seq_file
romvec->pv_printrev >> 16,
romvec->pv_printrev & 0xffff,
&cputypval,
- num_possible_cpus(),
+ ncpus_probed,
num_online_cpus()
#ifndef CONFIG_SMP
, cpu_data(0).udelay_val/(500000/HZ),
@@ -471,3 +474,30 @@ void sun_do_break(void)
int serial_console = -1;
int stop_a_enabled = 1;
+
+static int __init topology_init(void)
+{
+ int i, ncpus, err;
+
+ /* Count the number of physically present processors in
+ * the machine, even on uniprocessor, so that /proc/cpuinfo
+ * output is consistent with 2.4.x
+ */
+ ncpus = 0;
+ while (!cpu_find_by_instance(ncpus, NULL, NULL))
+ ncpus++;
+ ncpus_probed = ncpus;
+
+ err = 0;
+ for_each_online_cpu(i) {
+ struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ err = -ENOMEM;
+ else
+ register_cpu(p, i, NULL);
+ }
+
+ return err;
+}
+
+subsys_initcall(topology_init);
