diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2009-02-10 22:19:54 -0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-23 10:48:54 +1100 |
| commit | 465428884765b43d642a967915e16c6c7cacbe8e (patch) | |
| tree | bee656decba5598493b920efab53ec4ca95afa08 /arch/powerpc/kernel/entry_64.S | |
| parent | 6794c78243bfda020ab184d6d578944f8e90d26c (diff) | |
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.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index a32699e74c3..9f61fd61f27 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 |