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ftrace: add have dynamic ftrace config for archs

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Now that ftrace is being ported to other architectures, it has become
apparent that DYNAMIC_FTRACE is dependent on whether or not that
architecture implements dynamic ftrace. FTRACE itself may be ported to
an architecture without porting dynamic ftrace.

This patch adds HAVE_DYNAMIC_FTRACE to allow architectures to port ftrace
without having to also port the dynamic aspect as well.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt 2008-05-17 00:01:36 -04:00 • committed by Thomas Gleixner
commit 677aa9f77e
4 changed files with 7 additions and 0 deletions
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4
kernel/trace/Kconfig
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@ -4,6 +4,9 @@
config HAVE_FTRACE
bool
config HAVE_DYNAMIC_FTRACE
bool
config TRACER_MAX_TRACE
bool
@ -94,6 +97,7 @@ config CONTEXT_SWITCH_TRACER
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"
depends on FTRACE
depends on HAVE_DYNAMIC_FTRACE
default y
help
This option will modify all the calls to ftrace dynamically