diff options
| author | Jing Zhang <[email protected]> | 2021-10-08 19:12:08 -0700 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-12-08 04:24:52 -0500 |
| commit | c3858335c711569b82a234a560dc19247e8f3fcc (patch) | |
| tree | 2c4e6688e22372a5da0e8209a7799c16bee890b0 /tools/perf/scripts/python | |
| parent | fac4268894394213127e43856f41d10f29131e69 (diff) | |
KVM: stats: Add stat to detect if vcpu is currently blocking
Add a "blocking" stat that userspace can use to detect the case where a
vCPU is not being run because of an vCPU/guest action, e.g. HLT or WFS on
x86, WFI on arm64, etc... Current guest/host/halt stats don't show this
well, e.g. if a guest halts for a long period of time then the vCPU could
could appear pathologically blocked due to a host condition, when in
reality the vCPU has been put into a not-runnable state by the guest.
Originally-by: Cannon Matthews <[email protected]>
Suggested-by: Sean Christopherson <[email protected]>
Reviewed-by: David Matlack <[email protected]>
Signed-off-by: Jing Zhang <[email protected]>
[sean: renamed stat to "blocking", massaged changelog]
Signed-off-by: Sean Christopherson <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions