[PATCH] for_each_possible_cpu: sparc64

for_each_cpu() actually iterates across all possible CPUs.  We've had mistakes
in the past where people were using for_each_cpu() where they should have been
iterating across only online or present CPUs.  This is inefficient and
possibly buggy.

We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the
future.

This patch replaces for_each_cpu with for_each_possible_cpu.
for sparc64.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 6 insertions, 6 deletions

diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 9372d4f376d5..9e94db2573a2 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -1092,7 +1092,7 @@ void sun4v_pci_init(int node, char *model_name)
                 }
         }
 
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 unsigned long page = get_zeroed_page(GFP_ATOMIC);
 
                 if (!page)
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 7d0e67c1ce50..005167f82419 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -535,7 +535,7 @@ static int __init topology_init(void)
         while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
                 ncpus_probed++;
 
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
                 if (p) {
                         register_cpu(p, i, NULL);
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index eb36f7988ff7..90eaca3ec9a6 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1280,7 +1280,7 @@ int setup_profiling_timer(unsigned int multiplier)
                 return -EINVAL;
 
         spin_lock_irqsave(&prof_setup_lock, flags);
-        for_each_cpu(i)
+        for_each_possible_cpu(i)
                 prof_multiplier(i) = multiplier;
         current_tick_offset = (timer_tick_offset / multiplier);
         spin_unlock_irqrestore(&prof_setup_lock, flags);
@@ -1308,12 +1308,12 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 }
         }
 
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 if (tlb_type == hypervisor) {
                         int j;
 
                         /* XXX get this mapping from machine description */
-                        for_each_cpu(j) {
+                        for_each_possible_cpu(j) {
                                 if ((j >> 2) == (i >> 2))
                                         cpu_set(j, cpu_sibling_map[i]);
                         }
diff --git a/include/asm-sparc64/percpu.h b/include/asm-sparc64/percpu.h
index 82032e159a76..baef13b58952 100644
--- a/include/asm-sparc64/percpu.h
+++ b/include/asm-sparc64/percpu.h
@@ -26,7 +26,7 @@ register unsigned long __local_per_cpu_offset asm("g5");
 #define percpu_modcopy(pcpudst, src, size)                      \
 do {                                                            \
         unsigned int __i;                                       \
-        for_each_cpu(__i)                                       \
+        for_each_possible_cpu(__i)                              \
                 memcpy((pcpudst)+__per_cpu_offset(__i),         \
                        (src), (size));                          \
 } while (0)