linux-toradex.git/arch/sh/lib/mcount.S, branch v3.4.45

sh: Fix up stack overflow check with ftrace disabled.

2009-07-11T12:06:53+00:00

Presently the STACK_CHECK() code is called in to multiple times, although
it's only necessary from the mcount entry. The code still attempts to
treat the nop case as an ftrace path resulting in superfluous code flow
for the case where ftrace is disabled. And finally, this also fixes up
references to a few undefined symbols when FUNCTION_TRACER=n.

Signed-off-by: Paul Mundt

sh: Fix up ftrace build error when STACK_DEBUG=n.

2009-07-11T11:33:34+00:00

Presently the closest reference to function_trace_stop is within a
CONFIG_STACK_DEBUG block. When this is turned off, the build bails out
with a pcrel too far error. Reorder things a bit to handle the various
combinations.

Signed-off-by: Paul Mundt

sh: Function graph tracer support

2009-07-11T01:08:01+00:00

Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Provide diagnostic kernel stack checks

2009-07-11T01:07:58+00:00

Enable kernel stack checking code in both the dynamic ftrace and mcount
code paths. Check the stack to see if it's overflowing and make sure
that the stack pointer contains an address that's either in init_stack
or after the bss.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Add ftrace syscall tracing support

2009-07-06T11:16:33+00:00

Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Define HAVE_FUNCTION_TRACE_MCOUNT_TEST

2009-07-06T10:53:53+00:00

Enable HAVE_FUNCTION_TRACE_MCOUNT_TEST and test the value of
function_trace_stop from our assembly code as opposed to using the
generic C function. This should optimise our mcount/ftrace code path.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: dynamic ftrace support.

2008-12-22T09:42:52+00:00

First cut at dynamic ftrace support.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt