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[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>
hifive-unleashed-5.1
David S. Miller 2007-07-15 02:02:01 -07:00
parent 39dd992aee
commit 9918cc2e32
1 changed files with 13 additions and 3 deletions
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16
arch/sparc64/kernel/ds.c
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@ -535,11 +535,21 @@ static int dr_cpu_configure(struct ds_cap_state *cp, u64 req_num,
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);
}
}