ACPI: use for_each_possible_cpu() instead of for_each_cpu()

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.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 431a8450346b..cf6167003d8a 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -628,7 +628,7 @@ int acpi_processor_preregister_performance(
         retval = 0;
 
         /* Call _PSD for all CPUs */
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 pr = processors[i];
                 if (!pr) {
                         /* Look only at processors in ACPI namespace */
@@ -659,7 +659,7 @@ int acpi_processor_preregister_performance(
          * Now that we have _PSD data from all CPUs, lets setup P-state 
          * domain info.
          */
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 pr = processors[i];
                 if (!pr)
                         continue;
@@ -680,7 +680,7 @@ int acpi_processor_preregister_performance(
         }
 
         cpus_clear(covered_cpus);
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 pr = processors[i];
                 if (!pr)
                         continue;
@@ -704,7 +704,7 @@ int acpi_processor_preregister_performance(
                         pr->performance->shared_type = CPUFREQ_SHARED_TYPE_ANY;
                 }
 
-                for_each_cpu(j) {
+                for_each_possible_cpu(j) {
                         if (i == j)
                                 continue;
 
@@ -733,7 +733,7 @@ int acpi_processor_preregister_performance(
                         count++;
                 }
 
-                for_each_cpu(j) {
+                for_each_possible_cpu(j) {
                         if (i == j)
                                 continue;
 
@@ -757,7 +757,7 @@ err_ret:
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error while parsing _PSD domain information. Assuming no coordination\n"));
         }
 
-        for_each_cpu(i) {
+        for_each_possible_cpu(i) {
                 pr = processors[i];
                 if (!pr || !pr->performance)
                         continue;