Asking another process sleep from another process or interrupt context

[Sunil Agham]

Hello List,

This is what I am trying to do in linux kernel. When some event occurs;
Process X wants to tell process Y to un-schedule itself(Y) [ and change
state from "running or ready to run" to "not ready to run until told
otherwise" ]. Process X will take care of waking up Y later.

One approach probably is to set "*need_resched*" for process Y so that
schedular picks another process at the first opportunity. Is there any
other alternative ? Is it safe to do this from interrupt context instead of
process X's context ?

--
Sunil
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