tools/kvm_stat: don't reset stats when setting PID filter for debugfs
When setting a PID filter in debugfs, we unnecessarily reset the statistics, although there is no reason to do so. This behavior was merely introduced with commit 9f114a03 "tools/kvm_stat: add interactive command 'r'", most likely to mimic the behavior of the tracepoints provider in this respect. However, there are plenty of differences between the two providers, so there is no reason not to take advantage of the possibility to filter by PID without resetting the statistics. Signed-off-by: Stefan Raspl <raspl@linux.ibm.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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