The patch allows physical bring-up of new processors (not initially present in the configuration) from facilities such as driver/utility implemented on a platform. The actual method of making processors available is up to the platform implementation.
Signed-off-by: Natalie Protasevich <[email protected]>
---
arch/i386/kernel/irq.c | 8 ++++----
arch/i386/kernel/mpparse.c | 6 +++---
arch/i386/kernel/smpboot.c | 4 ++++
3 files changed, 11 insertions(+), 7 deletions(-)
diff -puN arch/i386/kernel/mpparse.c~hotcpu-i386 arch/i386/kernel/mpparse.c
--- linux-2.6.14-rc1-mm1/arch/i386/kernel/mpparse.c~hotcpu-i386 2005-09-20 16:48:12.078408952 -0700
+++ linux-2.6.14-rc1-mm1-root/arch/i386/kernel/mpparse.c 2005-09-20 16:50:09.516555640 -0700
@@ -70,7 +70,7 @@ unsigned int def_to_bigsmp = 0;
/* Processor that is doing the boot up */
unsigned int boot_cpu_physical_apicid = -1U;
/* Internal processor count */
-static unsigned int __initdata num_processors;
+static unsigned int __devinitdata num_processors;
/* Bitmask of physically existing CPUs */
physid_mask_t phys_cpu_present_map;
@@ -120,7 +120,7 @@ static int MP_valid_apicid(int apicid, i
}
#endif
-static void __init MP_processor_info (struct mpc_config_processor *m)
+static void __devinit MP_processor_info (struct mpc_config_processor *m)
{
int ver, apicid;
physid_mask_t phys_cpu;
@@ -835,7 +835,7 @@ void __init mp_register_lapic_address (
}
-void __init mp_register_lapic (
+void __devinit mp_register_lapic (
u8 id,
u8 enabled)
{
diff -puN arch/i386/kernel/smpboot.c~hotcpu-i386 arch/i386/kernel/smpboot.c
--- linux-2.6.14-rc1-mm1/arch/i386/kernel/smpboot.c~hotcpu-i386 2005-09-20 16:48:12.113403632 -0700
+++ linux-2.6.14-rc1-mm1-root/arch/i386/kernel/smpboot.c 2005-09-20 16:51:55.422455496 -0700
@@ -88,7 +88,11 @@ EXPORT_SYMBOL(cpu_online_map);
cpumask_t cpu_callin_map;
cpumask_t cpu_callout_map;
EXPORT_SYMBOL(cpu_callout_map);
+#ifdef CONFIG_HOTPLUG_CPU
+cpumask_t cpu_possible_map = CPU_MASK_ALL;
+#else
cpumask_t cpu_possible_map;
+#endif
EXPORT_SYMBOL(cpu_possible_map);
static cpumask_t smp_commenced_mask;
diff -puN arch/i386/kernel/irq.c~hotcpu-i386 arch/i386/kernel/irq.c
--- linux-2.6.14-rc1-mm1/arch/i386/kernel/irq.c~hotcpu-i386 2005-09-20 16:48:12.148398312 -0700
+++ linux-2.6.14-rc1-mm1-root/arch/i386/kernel/irq.c 2005-09-20 16:52:29.668249344 -0700
@@ -220,7 +220,7 @@ int show_interrupts(struct seq_file *p,
if (i == 0) {
seq_printf(p, " ");
- for_each_cpu(j)
+ for_each_online_cpu(j)
seq_printf(p, "CPU%d ",j);
seq_putc(p, '\n');
}
@@ -234,7 +234,7 @@ int show_interrupts(struct seq_file *p,
#ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i));
#else
- for_each_cpu(j)
+ for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
#endif
seq_printf(p, " %14s", irq_desc[i].handler->typename);
@@ -248,12 +248,12 @@ skip:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
} else if (i == NR_IRQS) {
seq_printf(p, "NMI: ");
- for_each_cpu(j)
+ for_each_online_cpu(j)
seq_printf(p, "%10u ", nmi_count(j));
seq_putc(p, '\n');
#ifdef CONFIG_X86_LOCAL_APIC
seq_printf(p, "LOC: ");
- for_each_cpu(j)
+ for_each_online_cpu(j)
seq_printf(p, "%10u ",
per_cpu(irq_stat,j).apic_timer_irqs);
seq_putc(p, '\n');
_
-
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