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    SubjectRe: [Bug #13319] Page allocation failures with b43 and p54usb
    Hi Mel,

    On Mon, 8 Jun 2009, Mel Gorman wrote:
    > Is there any chance you could hatchet together a patch
    > slab-allocation-failure that reports on slab allocation failures similar
    > to what the page allocator does? Minimally, it should tell us what
    > the size of the allocation was but any other information such as the
    > same of the slab, the size of pages it normally uses are, etc. would
    > also be useful.

    Would something like this be sufficient? Figuring out the actual _size_
    passed to kmalloc() is pretty difficult as then we would need to do the
    NULL test in fastpath code or pass the argument deeper in the call-chain.


    diff --git a/mm/slub.c b/mm/slub.c
    index 65ffda5..b5acf18 100644
    --- a/mm/slub.c
    +++ b/mm/slub.c
    @@ -1565,6 +1565,8 @@ new_slab:
    c->page = new;
    goto load_freelist;
    + printk(KERN_WARNING "SLUB: unable to satisfy allocation for cache %s (size=%d, node=%d, gfp=%x)\n",
    + s->name, s->size, node, gfpflags);
    return NULL;
    if (!alloc_debug_processing(s, c->page, object, addr))

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      Last update: 2009-06-08 16:01    [W:0.022 / U:14.068 seconds]
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