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Commit 8ba6c2b0 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen: print backtrace on multicall failure 



Print a backtrace if a multicall fails, to help with debugging.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 7c33b1e6

arch/x86/xen/multicalls.c

+1 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ void xen_mc_flush(void) 
		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,