Commit 60ce8f72 authored by Steven Rostedt's avatar Steven Rostedt Committed by Benjamin Herrenschmidt
Browse files

powerpc32, ftrace: dynamic function graph tracer 



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

Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent fad4f47c

arch/powerpc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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

arch/powerpc/kernel/entry_32.S

+6 −2
Original line number Diff line number Diff line
@@ -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