[MIPS] Fix potential latency problem due to non-atomic cpu_wait.

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If an interrupt happened between checking of NEED_RESCHED and WAIT
instruction, adjust EPC to restart from checking of NEED_RESCHED.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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Atsushi Nemoto 2007-11-12 02:05:18 +09:00 • committed by Ralf Baechle

parent 6657fe0a02

commit c65a5480ff

3 changed files with 55 additions and 20 deletions

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16

arch/mips/kernel/cpu-probe.c

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37

arch/mips/kernel/genex.S

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22

arch/mips/kernel/traps.c

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