08a77ed8c4
xenpaging.tools_xenpaging_cleanup.patch - fate#310510 - fix xenpaging xenpaging.mem_event_check_ring-free_requests.patch - install /etc/xen/examples/xentrace_formats.txt to get human readable tracedata if xenalyze is not used - fate#310510 - fix xenpaging xenpaging.autostart_delay.patch xenpaging.blacklist.patch xenpaging.MRU_SIZE.patch remove xenpaging.hacks.patch, realmode works - Upstream patches from Jan including fixes for the following bugs bnc#583568 - Xen kernel is not booting bnc#615206 - Xen kernel fails to boot with IO-APIC problem bnc#640773 - Xen kernel crashing right after grub bnc#643477 - issues with PCI hotplug/hotunplug to Xen driver domain 22223-vtd-igd-workaround.patch 22222-x86-timer-extint.patch 22214-x86-msr-misc-enable.patch 22213-x86-xsave-cpuid-check.patch 22194-tmem-check-pv-mfn.patch 22177-i386-irq-safe-map_domain_page.patch 22175-x86-irq-enter-exit.patch 22174-x86-pmtimer-accuracy.patch 22160-Intel-C6-EOI.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=76
26 lines
898 B
Diff
26 lines
898 B
Diff
Subject: xenpaging: print info when free request slots drop below 3
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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 < 3) )
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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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