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SubjectRe: [PATCH 1/3] Per-cpu UP unification
Rusty Russell <rusty@rustcorp.com.au> wrote:
>
> [ Untested on ia64, but fairly trivial if I've broken something ].
>
> Name: Unification of per-cpu headers for non-SMP
> Author: Rusty Russell
> Status: Trivial

I applied all these to the ppc64 kernel (you missed ppc64 btw) and it dies.

Quite late in boot, during floppy_init->init_disk_stats->alloc_percpu.

I'm reduced to debugging with printk on ppc64. __alloc_percpu() calls
new_block(), loops around and then dies in here:


#define D() printk("at %s:%d\n", __FILE__, __LINE__)

D();
/* Transfer extra to previous block. */
if (b->size[i-1] < 0)
b->size[i-1] -= extra;
else
b->size[i-1] += extra;
b->size[i] -= extra;
ptr += extra;

D();

Not sure what happened - no oops, no xmon, no sysrq, no nuthin. It even
manages to lock up minicom on the other end of the cable. Impressed.





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