Messages in this thread | | | Date | Fri, 2 Oct 2020 14:54:29 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v3 2/2] tty/sysrq: Add configurable handler to execute a compound action |
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On Tue, Aug 18, 2020 at 01:28:25PM +0200, Andrzej Pietrasiewicz wrote: > Userland might want to execute e.g. 'w' (show blocked tasks), followed > by 's' (sync), followed by 1000 ms delay and then followed by 'c' (crash) > upon a single magic SysRq. Or one might want to execute the famous "Raising > Elephants Is So Utterly Boring" action. This patch adds a configurable > handler, triggered with 'C', for this exact purpose. The user specifies the > composition of the compound action using syntax similar to getopt, where > each letter corresponds to an individual action and a colon followed by a > number corresponds to a delay of that many milliseconds, e.g.: > > ws:1000c > > or > > r:100eis:1000ub
A macro language for sysrq commands, who would have thought...
Anyway, _why_ would userland want to do something so crazy as this? What is the use-case here?
thanks,
greg k-h
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