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Subject[PATCH 7/7][RFC] powerpc32, ftrace: dynamic function graph tracer
From: Steven Rostedt <rostedt@gollum.(none)>

This patch gets function graph tracing working with dynamic function
tracer on PowerPC32.

Signed-off-by: Steven Rostedt <rostedt@gollum.(none)>
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/kernel/entry_32.S | 8 ++++++--
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 9e4bd20..40b7981 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -111,7 +111,7 @@ config PPC
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
select HAVE_FUNCTION_TRACER
- select HAVE_FUNCTION_GRAPH_TRACER if PPC64 || !DYNAMIC_FTRACE
+ select HAVE_FUNCTION_GRAPH_TRACER
select ARCH_WANT_OPTIONAL_GPIOLIB
select HAVE_IDE
select HAVE_IOREMAP_PROT
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 9cf7083..529bfbb 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -1183,7 +1183,12 @@ _GLOBAL(ftrace_caller)
ftrace_call:
bl ftrace_stub
nop
-
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+.globl ftrace_graph_call
+ftrace_graph_call:
+ b ftrace_graph_stub
+_GLOBAL(ftrace_graph_stub)
+#endif
MCOUNT_RESTORE_FRAME
/* old link register ends up in ctr reg */
bctr
@@ -1205,7 +1210,6 @@ _GLOBAL(_mcount)
b ftrace_graph_caller
#endif
MCOUNT_RESTORE_FRAME
-
bctr
#endif

--
1.5.6.5
--


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