sh: ftrace: Make code modification NMI safe.

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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>

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This commit is contained in:

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

parent c8afde7f40

commit e4b053d96a

2 changed files with 146 additions and 1 deletions

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1

arch/sh/Kconfig

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146

arch/sh/kernel/ftrace.c

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