user/sven/linux.git/tools/kvm, branch v4.12

tools/kvm_stat: add '%Total' column

2017-03-29T10:01:33Z

Add column '%Total' next to 'Total' for easier comparison of numbers between hosts. Signed-off-by: Stefan Raspl Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: add interactive command 'r'

2017-03-29T10:01:32Z

Provide an interactive command to reset the tracepoint statistics. Requires some extra work for debugfs, as the counters cannot be reset. On the up side, this offers us the opportunity to have debugfs values reset on startup and whenever a filter is modified, becoming consistent with the tracepoint provider. As a bonus, 'kvmstat -dt' will now provide useful output, instead of mixing values in totally different orders of magnitude. Furthermore, we avoid unnecessary resets when any of the filters is "changed" interactively to the previous value. Signed-off-by: Stefan Raspl Acked-by: Janosch Frank Signed-off-by: Radim Krčmář

tools/kvm_stat: add interactive command 'c'

2017-03-29T10:01:32Z

Provide a real simple way to erase any active filter. Signed-off-by: Stefan Raspl Reviewed-by: Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: add option '--guest'

2017-03-29T10:01:31Z

Add a new option '-g'/'--guest' to select a particular process by providing the QEMU guest name. Notes: - The logic to figure out the pid corresponding to the guest name might look scary, but works pretty reliably in practice; in the unlikely event that it returns add'l flukes, it will bail out and hint at using '-p' instead, no harm done. - Mixing '-g' and '-p' is possible, and the final instance specified on the command line is the significant one. This is consistent with current behavior for '-p' which, if specified multiple times, also regards the final instance as the significant one. Signed-off-by: Stefan Raspl Reviewed-by: Janosch Frank Signed-off-by: Radim Krčmář

tools/kvm_stat: remove regex filter on empty input

2017-03-29T10:01:30Z

Behavior on empty/0 input for regex and pid filtering was inconsistent, as the former would keep the current filter, while the latter would (naturally) remove any pid filtering. Make things consistent by falling back to the default filter on empty input for the regex filter dialogue. Signed-off-by: Stefan Raspl Reviewed-by: Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: display regex when set to non-default

2017-03-29T10:01:30Z

If a user defines a regex filter through the interactive command, display the active regex in the header's second line. Signed-off-by: Stefan Raspl Reviewed-by: Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: print error messages on faulty pid filter input

2017-03-29T10:01:29Z

Print helpful messages in case users enter invalid input or invalid pids in the interactive pid filter dialogue. Signed-off-by: Stefan Raspl Reviewed-by: Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: remove pid filter on empty input

2017-03-29T10:01:29Z

Improve consistency in the interactive dialogue for pid filtering by removing any filters on empty input (in addition to entering 0). Signed-off-by: Stefan Raspl Reviewed-by: Janosch Frank Reviewed-by: Marc Hartmayer Signed-off-by: Radim Krčmář

tools/kvm_stat: display guest name when using pid filter

2017-03-29T10:01:28Z

When running kvm_stat with option '-p' to filter per process, display the QEMU guest name next to the pid, if available. Signed-off-by: Stefan Raspl Reviewed-By: Janosch Frank Signed-off-by: Radim Krčmář

tools/kvm_stat: document list of interactive commands

2017-03-29T10:01:28Z

Apart from the source code, there does not seem to be a place that documents the interactive capabilities of kvm_stat yet. Signed-off-by: Stefan Raspl Signed-off-by: Radim Krčmář