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authorRobert Jennings <rcj@linux.vnet.ibm.com>2010-07-22 16:43:44 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-31 15:05:19 +1000
commitceddee23be9fda04b928aa309fd95931bc4efb96 (patch)
treeb20e27b1932523ca44790a7ea033e7d31d69aed8
parentff4bb7cb9feea3d8851c0e7837dce15822acf11b (diff)
powerpc: ONLINE to OFFLINE CPU state transition during removal
If a CPU remove is attempted using the 'release' interface on hardware which supports extended cede, the CPU will be put in the INACTIVE state rather than the OFFLINE state due to the default preferred_offline_state in that situation. In the INACTIVE state it will fail to be removed. This patch changes the preferred offline state to OFFLINE when an CPU is in the ONLINE state. After cpu_down() is called in dlpar_offline_cpu() the CPU will be OFFLINE and CPU removal can continue. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index d71e58584086..227c1c3d585e 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -463,6 +463,7 @@ static int dlpar_offline_cpu(struct device_node *dn)
break;
if (get_cpu_current_state(cpu) == CPU_STATE_ONLINE) {
+ set_preferred_offline_state(cpu, CPU_STATE_OFFLINE);
cpu_maps_update_done();
rc = cpu_down(cpu);
if (rc)