powerpc/pseries: Don't panic when H_PROD fails during cpu-online.
authorGautham R Shenoy <ego@in.ibm.com>
Thu, 10 Dec 2009 01:19:37 +0000 (01:19 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 18 Dec 2009 03:54:26 +0000 (14:54 +1100)
If an online-attempt on a CPU which has been offlined using H_CEDE
with an appropriate cede latency hint fails, don't panic.

Instead print the error message and let the __cpu_up() code notify the
CPU Hotplug framework of the failure, which in turn can notify the
other subsystem through CPU_UP_CANCELED.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/platforms/pseries/smp.c

index 8868c012268a45ebf348d41dcc023699ee0954e8..b4886635972c6dbf88b30bb9a69a21f569396ad8 100644 (file)
@@ -144,8 +144,8 @@ static void __devinit smp_pSeries_kick_cpu(int nr)
                hcpuid = get_hard_smp_processor_id(nr);
                rc = plpar_hcall_norets(H_PROD, hcpuid);
                if (rc != H_SUCCESS)
-                       panic("Error: Prod to wake up processor %d Ret= %ld\n",
-                               nr, rc);
+                       printk(KERN_ERR "Error: Prod to wake up processor %d\
+                                               Ret= %ld\n", nr, rc);
        }
 }