Re: Does perf support different length of user-space hw_breakpoint?

[xiakaixu]

ä 2014/5/12 16:48, Peter Zijlstra åé:
> On Mon, May 12, 2014 at 04:20:44PM +0800, kaixu xia wrote:
>> 2014-05-12 16:05 GMT+08:00 Peter Zijlstra <peterz@xxxxxxxxxxxxx>:
>>
>>> On Mon, May 12, 2014 at 03:52:54PM +0800, xiakaixu wrote:
>>>> Hi guys,
>>>>
>>>> Does perf support different length of user-space hw_breakpoint,
>>>> such as  HW_BREAKPOINT_LEN_1/HW_BREAKPOINT_LEN_2/HW_BREAKPOINT_LEN_4/
>>>> HW_BREAKPOINT_LEN_8?
>>>>
>>>> Seems perf only support HW_BREAKPOINT_LEN_4/sizeof(long)
>>>> by default from the source code and simple test.
>>>>
>>>> May I have your opinions if I want to trace different bytes of
>>>> hw_breakpoint addr?
>>>
>>> Frederic?
>>>
>>
>> Sorry, can not fully understand it. Can you give more details on that?
> 
> I asked Frederic to answer your question :-)
> 
Thanks:-)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/