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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-04-27 05:25:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-05-13 23:11:29 -0400 |
| commit | 193de0c79da580eb33a66113b62e2378fc1fb629 (patch) | |
| tree | 62e278011d758b57105af7d00d1b0b9977d0f2e3 /drivers | |
| parent | 9011bff4bdc0fef1f9a782d7415c306ee61826c9 (diff) | |
| download | linux-0-day-193de0c79da580eb33a66113b62e2378fc1fb629.tar.gz linux-0-day-193de0c79da580eb33a66113b62e2378fc1fb629.tar.xz | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_perflib.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 431a8450346bb..cf6167003d8a2 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; |