diff options
| author |   Bob Breuer <breuerr@mc.net> | 2006-06-20 00:28:33 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2006-06-20 00:28:33 -0700 |
| commit | a8cbdcea341ac2f404ee81aa1c19d54aaa0416b4 (patch) | |
| tree | b9aa7ac16fcbe287001bd27080a27b41db7eeb5b /arch | |
| parent | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus (diff) | |
| download | linux-dev-a8cbdcea341ac2f404ee81aa1c19d54aaa0416b4.tar.xz linux-dev-a8cbdcea341ac2f404ee81aa1c19d54aaa0416b4.zip | |
[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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/kernel/setup.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c index 3509e4305532..8531a8e15832 100644 --- a/arch/sparc/kernel/setup.c +++ b/arch/sparc/kernel/setup.c @@ -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); |