Paul Mundt e4b053d96a sh: ftrace: Make code modification NMI safe. ...

This cribs the x86 implementation of ftrace_nmi_enter() and friends to
make ftrace_modify_code() NMI safe, particularly on SMP configurations.

For additional notes on the problems involved, see the comment below
ftrace_call_replace().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2009-10-13 16:52:50 +09:00

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