[Xen-devel] [PATCH]Dom0: Fix for throttling while pr->id == -1

["Wei, Gang" <gang.wei@xxxxxxxxx>]

Fix for throttling while pr->id == -1

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>

diff -r f40f4f86d5a2 drivers/acpi/processor_core.c
--- a/drivers/acpi/processor_core.c     Mon Oct 27 13:47:07 2008 +0000
+++ b/drivers/acpi/processor_core.c     Tue Oct 28 10:27:01 2008 +0800
@@ -513,8 +513,17 @@ static int acpi_processor_get_info(struc
 #if defined(CONFIG_CPU_FREQ) || defined(CONFIG_PROCESSOR_EXTERNAL_CONTROL)
        acpi_processor_ppc_has_changed(pr);
 #endif
-       acpi_processor_get_throttling_info(pr);
-       acpi_processor_get_limit_info(pr);
+
+       /* 
+        * pr->id may equal to -1 while processor_cntl_external enabled.
+        * throttle and thermal module don't support this case.
+        * Tx only works when dom0 vcpu == pcpu num by far, as we give 
+        * control to dom0.
+        */
+       if (pr->id != -1) {
+               acpi_processor_get_throttling_info(pr);
+               acpi_processor_get_limit_info(pr);
+       }
 
        return 0;
 }

Jimmy

Attachment: throttling-fix.patch
Description: throttling-fix.patch

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