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| author | Paul Mundt <lethal@linux-sh.org> | 2009-10-13 09:52:50 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-10-13 09:52:50 +0200 |
| commit | e4b053d96ae4e23e7023eb9f591bd7fc5c9c8cb9 (patch) | |
| tree | 16e25333605c6919ce85ae9a43e970dc0dd516f4 /arch/sh/Kconfig | |
| parent | sh: Don't profile return_address(). (diff) | |
| download | linux-e4b053d96ae4e23e7023eb9f591bd7fc5c9c8cb9.tar.xz linux-e4b053d96ae4e23e7023eb9f591bd7fc5c9c8cb9.zip | |
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>
Diffstat (limited to 'arch/sh/Kconfig')
| -rw-r--r-- | arch/sh/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index b940424f8ccc..5260fb55ab7f 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -38,6 +38,7 @@ config SUPERH32 select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_FTRACE_SYSCALLS + select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE select HAVE_FUNCTION_GRAPH_TRACER select HAVE_ARCH_KGDB select ARCH_HIBERNATION_POSSIBLE if MMU |