[SPARC64]: Give more accurate errors in dr_cpu_configure().
When cpu_up() fails, we can discern the most likely cause.
If cpu_present() is false, this means the cpu did not appear
in the MD. If -ENODEV is the error return value, then
the processor did not boot properly into the kernel.
Pass this information back in the dr-cpu response packet.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index d412cf8..b633171 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -535,11 +535,21 @@
printk(KERN_INFO PFX "Starting cpu %d...\n", cpu);
err = cpu_up(cpu);
if (err) {
+ __u32 res = DR_CPU_RES_FAILURE;
+ __u32 stat = DR_CPU_STAT_UNCONFIGURED;
+
+ if (!cpu_present(cpu)) {
+ /* CPU not present in MD */
+ res = DR_CPU_RES_NOT_IN_MD;
+ stat = DR_CPU_STAT_NOT_PRESENT;
+ } else if (err == -ENODEV) {
+ /* CPU did not call in successfully */
+ res = DR_CPU_RES_CPU_NOT_RESPONDING;
+ }
+
printk(KERN_INFO PFX "CPU startup failed err=%d\n",
err);
- dr_cpu_mark(resp, cpu, ncpus,
- DR_CPU_RES_FAILURE,
- DR_CPU_STAT_UNCONFIGURED);
+ dr_cpu_mark(resp, cpu, ncpus, res, stat);
}
}