On Mon, May 12, 2014 at 04:20:44PM +0800, kaixu xia wrote: > 2014-05-12 16:05 GMT+08:00 Peter Zijlstra <pet...@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 :-)
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