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authorSuresh Warrier <warrier@linux.vnet.ibm.com>2015-03-20 20:39:48 +1100
committerAlexander Graf <agraf@suse.de>2015-04-21 15:21:30 +0200
commit6e0365b782739eb41b03bcfd23abeefacbf0817a (patch)
tree258cd96302294e468779e4b979aa6de48fd4770b /virt
parentb0221556dbd3c31c47f37703f856aeeffc78abd3 (diff)
downloadkernel-6e0365b782739eb41b03bcfd23abeefacbf0817a.tar.gz
KVM: PPC: Book3S HV: Add ICP real mode counters
Add two counters to count how often we generate real-mode ICS resend and reject events. The counters provide some performance statistics that could be used in the future to consider if the real mode functions need further optimizing. The counters are displayed as part of IPC and ICP state provided by /sys/debug/kernel/powerpc/kvm* for each VM. Also added two counters that count (approximately) how many times we don't find an ICP or ICS we're looking for. These are not currently exposed through sysfs, but can be useful when debugging crashes. Signed-off-by: Suresh Warrier <warrier@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
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