[Xen-changelog] [linux-2.6.18-xen] dom0: Fix for throttling while pr->id == -1

["Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1225190351 0
# Node ID de7f94bd650b7e00cd57191280c5f0959b2a286e
# Parent  f40f4f86d5a2c5caa0261512279f3590e95f3d91
dom0: Fix for throttling while pr->id == -1

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
---
 drivers/acpi/processor_core.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff -r f40f4f86d5a2 -r de7f94bd650b 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 10:39:11 2008 +0000
@@ -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;
 }

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