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authorAlex Chiang <achiang@hp.com>2010-02-22 12:11:39 -0700
committerLen Brown <len.brown@intel.com>2010-03-14 21:17:22 -0400
commitd8191fa4a33fdc817277da4f2b7f771ff605a41c (patch)
treed72667311fcaea0fbfc7c9a8e71bd6b612af215c
parent3b1da4c5d1032ebc29fec8bd8f592ba6589be8ed (diff)
downloadop-kernel-dev-d8191fa4a33fdc817277da4f2b7f771ff605a41c.zip
op-kernel-dev-d8191fa4a33fdc817277da4f2b7f771ff605a41c.tar.gz
ACPI: processor: driver doesn't need to evaluate _PDC
Now that the early _PDC evaluation path knows how to correctly evaluate _PDC on only physically present processors, there's no need for the processor driver to evaluate it later when it loads. To cover the hotplug case, push _PDC evaluation down into the hotplug paths. Cc: x86@kernel.org Cc: Tony Luck <tony.luck@intel.com> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--arch/ia64/kernel/acpi.c3
-rw-r--r--arch/x86/kernel/acpi/boot.c3
-rw-r--r--drivers/acpi/processor_core.c7
-rw-r--r--drivers/acpi/processor_driver.c3
4 files changed, 6 insertions, 10 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a7ca07f..f1c9f70 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -44,6 +44,7 @@
#include <linux/efi.h>
#include <linux/mmzone.h>
#include <linux/nodemask.h>
+#include <acpi/processor.h>
#include <asm/io.h>
#include <asm/iosapic.h>
#include <asm/machvec.h>
@@ -907,6 +908,8 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
cpu_set(cpu, cpu_present_map);
ia64_cpu_to_sapicid[cpu] = physid;
+ acpi_processor_set_pdc(handle);
+
*pcpu = cpu;
return (0);
}
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index a54d714..d635a93 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -490,6 +490,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
* ACPI based hotplug support for CPU
*/
#ifdef CONFIG_ACPI_HOTPLUG_CPU
+#include <acpi/processor.h>
static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
{
@@ -567,6 +568,8 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
goto free_new_map;
}
+ acpi_processor_set_pdc(handle);
+
cpu = cpumask_first(new_map);
acpi_map_cpu2node(handle, cpu, physid);
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ef34faa..626c754 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -317,8 +317,6 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
return status;
}
-static int early_pdc_done;
-
void acpi_processor_set_pdc(acpi_handle handle)
{
struct acpi_object_list *obj_list;
@@ -326,9 +324,6 @@ void acpi_processor_set_pdc(acpi_handle handle)
if (arch_has_acpi_pdc() == false)
return;
- if (early_pdc_done)
- return;
-
obj_list = acpi_processor_alloc_pdc();
if (!obj_list)
return;
@@ -369,6 +364,4 @@ void __init acpi_early_processor_set_pdc(void)
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
early_init_pdc, NULL, NULL, NULL);
-
- early_pdc_done = 1;
}
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 7eedf74..b5658cd 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -608,9 +608,6 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
goto err_remove_fs;
}
- /* _PDC call should be done before doing anything else (if reqd.). */
- acpi_processor_set_pdc(pr->handle);
-
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
#endif
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