lkml.org 
[lkml]   [2014]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Does perf support different length of user-space hw_breakpoint?
于 2014/5/12 16:48, Peter Zijlstra 写道:
> On Mon, May 12, 2014 at 04:20:44PM +0800, kaixu xia wrote:
>> 2014-05-12 16:05 GMT+08:00 Peter Zijlstra <peterz@infradead.org>:
>>
>>> 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@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2014-05-12 11:41    [W:0.047 / U:0.612 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site