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authorSteven Rostedt <srostedt@redhat.com>2009-02-11 07:19:54 +0100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-23 00:48:54 +0100
commit465428884765b43d642a967915e16c6c7cacbe8e (patch)
treebee656decba5598493b920efab53ec4ca95afa08 /arch/powerpc/kernel/entry_64.S
parentpowerpc64: port of the function graph tracer (diff)
downloadlinux-465428884765b43d642a967915e16c6c7cacbe8e.tar.xz
linux-465428884765b43d642a967915e16c6c7cacbe8e.zip
powerpc64, tracing: add function graph tracer with dynamic tracing
This is the port of the function graph tracer to PowerPC with dynamic tracing. Geoff Lavand tested on PS3. Tested-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
-rw-r--r--arch/powerpc/kernel/entry_64.S8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index a32699e74c3c..9f61fd61f277 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -908,6 +908,12 @@ _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
ld r0, 128(r1)
mtlr r0
addi r1, r1, 112
@@ -946,7 +952,7 @@ _GLOBAL(ftrace_stub)
#endif /* CONFIG_DYNAMIC_FTRACE */
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-ftrace_graph_caller:
+_GLOBAL(ftrace_graph_caller)
/* load r4 with local address */
ld r4, 128(r1)
subi r4, r4, MCOUNT_INSN_SIZE