Hi all,

This patch is now applicable to the tracing tree after merging with
Linus' tree.

On Fri, 27 Mar 2009 08:48:51 -0400 Steven Rostedt [off-list ref] wrote:

On Fri, 2009-03-27 at 23:08 +1100, Stephen Rothwell wrote:

quoted

Hi all,

Today's linux-next build (powerpc allyesconfig) failed like this:

arch/powerpc/kernel/ftrace.c: In function 'prepare_ftrace_return':
arch/powerpc/kernel/ftrace.c:612: warning: passing argument 3 of 'ftrace_push_return_trace' makes pointer from integer without a cast
arch/powerpc/kernel/ftrace.c:612: error: too many arguments to function 'ftrace_push_return_trace'

Caused by commit 5d1a03dc541dc6672e60e57249ed22f40654ca47
("function-graph: moved the timestamp from arch to generic code") from
the tracing tree which (removed an argument from
ftrace_push_return_trace()) interacting with commit
6794c78243bfda020ab184d6d578944f8e90d26c ("powerpc64: port of the
function graph tracer") from the powerpc tree.

I added the following patch and can carry it as necessary.

Thanks Stephen!!!

I knew this was going to break, but I needed to wait till powerpc merged
with tip before I could make the change.

quoted

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

From: Stephen Rothwell <redacted>
Date: Fri, 27 Mar 2009 22:47:58 +1100
Subject: [PATCH] tracing: fixup for ftrace_push_return_trace API change

Signed-off-by: Stephen Rothwell <redacted>
---
 arch/powerpc/kernel/ftrace.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c
index 5b5d16b..5455943 100644
--- a/arch/powerpc/kernel/ftrace.c
+++ b/arch/powerpc/kernel/ftrace.c

@@ -557,7 +557,6 @@ extern void mod_return_to_handler(void);
 void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
 {
 	unsigned long old;
-	unsigned long long calltime;
 	int faulted;
 	struct ftrace_graph_ent trace;
 	unsigned long return_hooker = (unsigned long)&return_to_handler;

@@ -606,10 +605,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
 		return;
 	}
 
-	calltime = cpu_clock(raw_smp_processor_id());
-
-	if (ftrace_push_return_trace(old, calltime,
-				self_addr, &trace.depth) == -EBUSY) {
+	if (ftrace_push_return_trace(old, self_addr, &trace.depth) == -EBUSY) {

This is exactly what I would have done.

Acked-by: Steven Rostedt <redacted>

-- Steve

quoted

 		*parent = old;
 		return;
 	}

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/