5a49a4e63b
22045-python27-compat.patch Thu Nov 11 18:44:48 CST 2010 - cyliu@novell.com - bnc#641144 - FV Xen VM running windows or linux cannot write to virtual floppy drive bdrv_default_rwflag.patch - fate#310510 - fix xenpaging xenpaging.optimize_p2m_mem_paging_populate.patch xenpaging.HVMCOPY_gfn_paged_out.patch - bnc#649864 - automatic numa cpu placement of xen conflicts with cpupools 22326-cpu-pools-numa-placement.patch - fate#310510 - fix xenpaging xenpaging.populate_only_if_paged.patch - revert logic, populate needs to happen unconditionally xenpaging.p2m_mem_paging_populate_if_p2m_ram_paged.patch - invalidate current mfn only if gfn is not in flight or done xenpaging.mem_event_check_ring-free_requests.patch - print info only if 1 instead of 2 slots are free xenpaging.guest_remove_page.patch - check mfn before usage in resume function xenpaging.machine_to_phys_mapping.patch - check mfn before usage in resume function - bnc#552115 - Remove target discovery in block-iscsi OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=82
26 lines
898 B
Diff
26 lines
898 B
Diff
Subject: xenpaging: print info when free request slots drop below 2
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Add debugging aid to free request slots in the ring buffer.
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It should not happen that the ring gets full, print info anyway if it happens.
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Signed-off-by: Olaf Hering <olaf@aepfle.de>
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---
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xen/arch/x86/mm/mem_event.c | 5 +++++
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1 file changed, 5 insertions(+)
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--- xen-4.0.1-testing.orig/xen/arch/x86/mm/mem_event.c
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+++ xen-4.0.1-testing/xen/arch/x86/mm/mem_event.c
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@@ -168,6 +168,11 @@ int mem_event_check_ring(struct domain *
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mem_event_ring_lock(d);
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free_requests = RING_FREE_REQUESTS(&d->mem_event.front_ring);
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+ if ( unlikely(free_requests < 2) )
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+ {
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+ gdprintk(XENLOG_INFO, "free request slots: %d\n", free_requests);
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+ WARN_ON(free_requests == 0);
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+ }
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ring_full = free_requests < MEM_EVENT_RING_THRESHOLD;
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if ( (current->domain->domain_id == d->domain_id) && ring_full )
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