fc116efad0
While running kvm_stat using tracepoint on ARM64 hardware (e.g. "kvm_stat -1 -t"), the initial values of some kvm_userspace_exit counters were found to be very suspecious. For instance the tracing tool showed that S390_TSCH was called many times on ARM64 machine, which apparently was wrong. This patch adds RESET ioctl support for perf monitoring. Before calling ioctl to enable a perf event, this patch resets the counter first. With this patch, the init counter values become correct on ARM64 hardware. Example: ==== before patch ==== kvm_userspace_exit(S390_SIEIC) 1426 0 kvm_userspace_exit(S390_TSCH) 339 0 ==== after patch ==== kvm_userspace_exit(S390_SIEIC) 0 0 kvm_userspace_exit(S390_TSCH) 0 0 Signed-off-by: Wei Huang <wei@redhat.com> |
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| .. | ||
| kvm | ||
| qemu-guest-agent | ||
| qmp | ||
| tracetool | ||
| acpi_extract_preprocess.py | ||
| acpi_extract.py | ||
| analyse-9p-simpletrace.py | ||
| check-qerror.sh | ||
| checkpatch.pl | ||
| cleanup-trace-events.pl | ||
| coverity-model.c | ||
| create_config | ||
| disas-objdump.pl | ||
| dump-guest-memory.py | ||
| extract-vsssdk-headers | ||
| feature_to_c.sh | ||
| get_maintainer.pl | ||
| gtester-cat | ||
| hxtool | ||
| make_device_config.sh | ||
| make-release | ||
| ordereddict.py | ||
| qapi-commands.py | ||
| qapi-event.py | ||
| qapi-types.py | ||
| qapi-visit.py | ||
| qapi.py | ||
| qemu-binfmt-conf.sh | ||
| qemu-gdb.py | ||
| refresh-pxe-roms.sh | ||
| signrom.py | ||
| simpletrace.py | ||
| switch-timer-api | ||
| texi2pod.pl | ||
| tracetool.py | ||
| update-acpi.sh | ||
| update-linux-headers.sh | ||
| vmstate-static-checker.py | ||