Re: [PATCH v5 13/13] perf record: introduce --ctl-fd[-ack] options

[Adrian Hunter]

On 1/06/20 7:05 pm, Alexey Budankov wrote:
> 
> Introduce --ctl-fd[-ack] options to pass open file descriptors numbers
> from command line. Extend perf-record.txt file with --ctl-fd[-ack]
> options description. Document possible usage model introduced by
> --ctl-fd[-ack] options by providing example bash shell script.

Hi

I am interested in using this also for taking snapshots.

Did you consider using a single option, or allowing either a file descriptor
or a pathname, or including also the event default of "disabled".

e.g. add "--control" and support all of:

--control
--control 11
--control 11,15
--control 11,15,disabled
--control 11,,disabled
--control /tmp/my-perf.fifo
--control /tmp/my-perf.fifo,/tmp/my-perf-ack.fifo
--control /tmp/my-perf.fifo,/tmp/my-perf-ack.fifo,disabled
--control /tmp/my-perf.fifo,,disabled

Regards
Adrian