Messages in this thread | | | From | Vince Weaver <> | Date | Thu, 3 Aug 2017 13:57:33 -0400 (EDT) | Subject | Re: [PATCH v2 1/2] kernel/events: Add option to notify through signals on wakeup |
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On Tue, 1 Aug 2017, Naveen N. Rao wrote:
> Add a new option 'signal_on_wakeup' to request for a signal to be > delivered on ring buffer wakeup controlled through watermark and > {wakeup_events, wakeup_watermark}. HUP is signaled on exit. > > Setting signal_on_wakeup disables use of IOC_REFRESH to control signal > delivery, instead relying on IOC_ENABLE/DISABLE.
so I probably missed the original thread on this new interface, but why is IOC_REFRESH not being used?
For new interfaces like this it's also nice to have some text that can be added to the perf_event_open() manpage, especially if there's weird conditions like this.
Vince
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