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[SPARC]: Add topology_init() 

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@mc.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bob Breuer 2006-06-20 00:28:33 -07:00 committed by David S. Miller
parent 25f42b6af0
commit a8cbdcea34
1 changed files with 31 additions and 1 deletions
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32
arch/sparc/kernel/setup.c
View File

@ -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 *m, void *__unused)
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);