Re: [rtl] Simple floating point question

[Cort Dougan <cort@fsmlabs.com>]

} On Thu, Oct 12, 2000 at 12:19:26PM -0600, yodaiken@fsmlabs.com wrote:
} > 
} > > After all, putting a scheduler into an interrupt handler would be
} > > frowned upon by many purist, but this is what is making RTL/RTAI work
} > > for us all right now.
} > 
} > A mysterious comment. RTLinux has always worked without the 
} > scheduler if it is not neeeded for the applications.  And all schedulers
} > for preemptive systems run from interrupt handlers, back since Alan Turing.
} > I don't see how you could do things otherwise, purist or not.
} 
} 
} I think he was commenting on the fact that the Linux scheduler
} runs from a bottom half instead of an interrupt.  A trivial and
} semantic difference, but isn't that what purity is about? =)

The Linux scheduler does run after an interrupt.  It gets called on a
ret_from_int on all architectures.  This is in the return path of
an interrupt and is in an interrupt even though in_interrupt() doesn't
return true.