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.
right..
/*
* We should find a nice way to override the access length
* Provide some defaults for now
*/
if (attr.bp_type == HW_BREAKPOINT_X)
attr.bp_len = sizeof(long);
else
attr.bp_len = HW_BREAKPOINT_LEN_4;
>
> May I have your opinions if I want to trace different bytes of
> hw_breakpoint addr?
I guess that depends on what you want to do ;-)
jirka
--
To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
