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authorPallipadi, Venkatesh <venkatesh.pallipadi@intel.com>2009-06-19 17:14:59 -0700
committerLen Brown <len.brown@intel.com>2009-06-20 00:50:52 -0400
commit7b768f07dce463a054c9dd84862d15ccc3d2b712 (patch)
tree1c7a2509e1bca6718fd29e897f44b648089f728b /arch/ia64
parent07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff)
downloadblackbird-op-linux-7b768f07dce463a054c9dd84862d15ccc3d2b712.tar.gz
blackbird-op-linux-7b768f07dce463a054c9dd84862d15ccc3d2b712.zip
ACPI: pdc init related memory leak with physical CPU hotplug
arch_acpi_processor_cleanup_pdc() in x86 and ia64 results in memory allocated for _PDC objects that is never freed and will cause memory leak in case of physical CPU remove and add. Patch fixes the memory leak by freeing the objects soon after _PDC is evaluated. Reported-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/acpi-processor.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/ia64/kernel/acpi-processor.c b/arch/ia64/kernel/acpi-processor.c
index cbe6cee5a550..dbda7bde6112 100644
--- a/arch/ia64/kernel/acpi-processor.c
+++ b/arch/ia64/kernel/acpi-processor.c
@@ -71,3 +71,15 @@ void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
}
EXPORT_SYMBOL(arch_acpi_processor_init_pdc);
+
+void arch_acpi_processor_cleanup_pdc(struct acpi_processor *pr)
+{
+ if (pr->pdc) {
+ kfree(pr->pdc->pointer->buffer.pointer);
+ kfree(pr->pdc->pointer);
+ kfree(pr->pdc);
+ pr->pdc = NULL;
+ }
+}
+
+EXPORT_SYMBOL(arch_acpi_processor_cleanup_pdc);
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