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[IA64] panic if topology_init kzalloc fails

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There really is no sense trying to continue if the kzalloc of sysfs_cpus[]
fails in ia64 topology_init.  The code calling into here doesn't check
errors very well, and one ends up with a nonobvious boot failure that
wastes peoples time debugging.

See for example the lkml thread at:
  http://lkml.org/lkml/2006/3/2/215

Since the system is totally dead when this kzalloc fails, not having yet
even booted, might as well announce one's death boldly and plainly.

Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Paul Jackson 2006-08-14 22:45:49 -07:00 committed by Tony Luck
parent 7682a4c624
commit a813213d73
1 changed files with 2 additions and 4 deletions
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6
arch/ia64/kernel/topology.c
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@ -67,10 +67,8 @@ static int __init topology_init(void)
#endif
sysfs_cpus = kzalloc(sizeof(struct ia64_cpu) * NR_CPUS, GFP_KERNEL);
if (!sysfs_cpus) {
err = -ENOMEM;
goto out;
}
if (!sysfs_cpus)
panic("kzalloc in topology_init failed - NR_CPUS too big?");
for_each_present_cpu(i) {
if((err = arch_register_cpu(i)))