On 10 February 2015 at 06:16, John Baldwin <j...@freebsd.org> wrote: > On Monday, February 09, 2015 11:13:51 PM Rui Paulo wrote: >> Author: rpaulo >> Date: Mon Feb 9 23:13:50 2015 >> New Revision: 278479 >> URL: https://svnweb.freebsd.org/changeset/base/278479 >> >> Log: >> Notify devd(8) when a process crashed. >> >> This change implements a notification (via devctl) to userland when >> the kernel produces coredumps after a process has crashed. >> devd can then run a specific command to produce a human readable crash >> report. The command is most usually a helper that runs gdb/lldb >> commands on the file/coredump pair. It's possible to use this >> functionality for implementing automatic generation of crash reports. >> >> devd(8) will be notified of the full path of the binary that crashed and >> the full path of the coredump file. > > I think this is a very useful feature and I think this is fine to be in the > tree as-is for now. My only note is that this is a bit of feature creep for > devd (this isn't a device notification, this is a system event notification). > As such, I think it might be worth thinking if we (collectively) want to think > about having a separate framework at all for system event notification. You > could possibly publish other interesting events this way. For example, Isilon > currently has a patch to log(9) Witness LORs. I personally think it's a bit > hackish and potentially unreliable. A much nicer interface if you want to > capture such things would be to publish an event for each logged LOR instead. > Machine checks are another example of something that might be nice to publish > (though you could possibly make the case that those would not be inappropriate > to publish via devd since actual hardware is involved). Disk and PCI errors > are another class of thing that it would be nice to publish in an easier to > programmaticaly parse manner.
Cool, so someone's going to add multi-subscriber support to /dev/devctl ? I think devd grows these things because it's easier than teaching the devctl interface to support multiple listeners. -adrian _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
