2017-02-07 20:18 GMT+01:00 Abel Vesa :
> On Wed, Jan 25, 2017 at 07:30:32PM +0100, Jean-Jacques Hiblot wrote:
>
>> Abel, I tested it partially.
>
> OK, so I managed to find exactly what is happening.
>
>> It's seems OK if I have FRAME_POINTER enabled and it breaks otherwise.
>
> FRAME_POINTER is ne
On Wed, Jan 25, 2017 at 07:30:32PM +0100, Jean-Jacques Hiblot wrote:
> Abel, I tested it partially.
OK, so I managed to find exactly what is happening.
> It's seems OK if I have FRAME_POINTER enabled and it breaks otherwise.
FRAME_POINTER is needed by OLD_MCOUNT.
OLD_MCOUNT is needed by __ftr
On Tue, Jan 24, 2017 at 11:24:51PM +, Abel Vesa wrote:
> The DYNAMIC_FTRACE_WITH_REGS configuration makes it possible for a ftrace
> operation to specify if registers need to saved/restored by the ftrace
> handler.
> This is needed by kgraft and possibly other ftrace-based tools, and the ARM
>
Abel, I tested it partially.
It's seems OK if I have FRAME_POINTER enabled and it breaks otherwise.
My test case attaches a tracing handler to a function "myfunc":
static struct ftrace_ops kprobe_ftrace_ops __read_mostly = {
.func = jjh_ftrace_handler,
.flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_O
The DYNAMIC_FTRACE_WITH_REGS configuration makes it possible for a ftrace
operation to specify if registers need to saved/restored by the ftrace handler.
This is needed by kgraft and possibly other ftrace-based tools, and the ARM
architecture is currently lacking this feature. It would also be the
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