---

yaml
---
r: 20428
b: refs/heads/master
c: 7bbb794
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ba09cf2bcf9b74d852dcb5ea957ac6af2bc0e057
+refs/heads/master: 7bbb79403163e047c6e333ff169db34e3c969e65

trunk/arch/arm/kernel/setup.c

@@ -23,6 +23,7 @@
 #include <linux/root_dev.h>
 #include <linux/cpu.h>
 #include <linux/interrupt.h>
+#include <linux/smp.h>
 
 #include <asm/cpu.h>
 #include <asm/elf.h>
@@ -771,6 +772,10 @@ void __init setup_arch(char **cmdline_p)
 	paging_init(&meminfo, mdesc);
 	request_standard_resources(&meminfo, mdesc);
 
+#ifdef CONFIG_SMP
+	smp_init_cpus();
+#endif
+
 	cpu_init();
 
 	/*

trunk/arch/arm/kernel/smp.c

@@ -338,7 +338,6 @@ void __init smp_prepare_boot_cpu(void)
 
 	per_cpu(cpu_data, cpu).idle = current;
 
-	cpu_set(cpu, cpu_possible_map);
 	cpu_set(cpu, cpu_present_map);
 	cpu_set(cpu, cpu_online_map);
 }

trunk/arch/arm/mach-integrator/platsmp.c

@@ -140,6 +140,18 @@ static void __init poke_milo(void)
 	mb();
 }
 
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+void __init smp_init_cpus(void)
+{
+	unsigned int i, ncores = get_core_count();
+
+	for (i = 0; i < ncores; i++)
+		cpu_set(i, cpu_possible_map);
+}
+
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned int ncores = get_core_count();
@@ -176,14 +188,11 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 		max_cpus = ncores;
 
 	/*
-	 * Initialise the possible/present maps.
-	 * cpu_possible_map describes the set of CPUs which may be present
-	 * cpu_present_map describes the set of CPUs populated
+	 * Initialise the present map, which describes the set of CPUs
+	 * actually populated at the present time.
 	 */
-	for (i = 0; i < max_cpus; i++) {
-		cpu_set(i, cpu_possible_map);
+	for (i = 0; i < max_cpus; i++)
 		cpu_set(i, cpu_present_map);
-	}
 
 	/*
 	 * Do we need any more CPUs? If so, then let them know where

trunk/arch/arm/mach-realview/platsmp.c

@@ -143,6 +143,18 @@ static void __init poke_milo(void)
 	mb();
 }
 
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+void __init smp_init_cpus(void)
+{
+	unsigned int i, ncores = get_core_count();
+
+	for (i = 0; i < ncores; i++)
+		cpu_set(i, cpu_possible_map);
+}
+
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned int ncores = get_core_count();
@@ -179,14 +191,11 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	local_timer_setup(cpu);
 
 	/*
-	 * Initialise the possible/present maps.
-	 * cpu_possible_map describes the set of CPUs which may be present
-	 * cpu_present_map describes the set of CPUs populated
+	 * Initialise the present map, which describes the set of CPUs
+	 * actually populated at the present time.
 	 */
-	for (i = 0; i < max_cpus; i++) {
-		cpu_set(i, cpu_possible_map);
+	for (i = 0; i < max_cpus; i++)
 		cpu_set(i, cpu_present_map);
-	}
 
 	/*
 	 * Do we need any more CPUs? If so, then let them know where

trunk/include/asm-arm/smp.h

@@ -41,6 +41,11 @@ extern void show_ipi_list(struct seq_file *p);
  */
 asmlinkage void do_IPI(struct pt_regs *regs);
 
+/*
+ * Setup the SMP cpu_possible_map
+ */
+extern void smp_init_cpus(void);
+
 /*
  * Move global data into per-processor storage.
  */