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    Subject[PATCH 08 of 55] xen: print backtrace on multicall failure
    Date
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    Print a backtrace if a multicall fails, to help with debugging.

    Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
    ---
    arch/x86/xen/multicalls.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/arch/x86/xen/multicalls.c b/arch/x86/xen/multicalls.c
    --- a/arch/x86/xen/multicalls.c
    +++ b/arch/x86/xen/multicalls.c
    @@ -76,6 +76,7 @@
    if (ret) {
    printk(KERN_ERR "%d multicall(s) failed: cpu %d\n",
    ret, smp_processor_id());
    + dump_stack();
    for (i = 0; i < b->mcidx; i++) {
    printk(" call %2d/%d: op=%lu arg=[%lx] result=%ld\n",
    i+1, b->mcidx,



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