Maciej W. Rozycki f02cf4691e MIPS: DEC: Implement FPU interrupt counter
Implement a cheap way to count FPU interrupts for R2k/R3k DECstation
systems.  Do this manually in handcoded assembly, rather than calling
`kstat_incr_irq_this_cpu' that would require setting up a stack frame
and a lot of redirection.  This is not going to be a problem because the
FPU interrupt is local to the CPU and also there is one CPU only anyway.

So at bootstrap determine the address of the correct location within
`struct irq_desc', and then only refer to it directly in the interrupt
handler.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9713/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-08 01:10:45 +02:00
..
2012-03-28 18:30:02 +01:00
2013-02-01 10:00:22 +01:00