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

2014-05-13 Thread xiakaixu
于 2014/5/13 23:06, Frederic Weisbecker 写道: > On Tue, May 13, 2014 at 02:00:46PM +0200, Jiri Olsa wrote: >> On Mon, May 12, 2014 at 03:52:54PM +0800, xiakaixu wrote: >>> Hi guys, >>> >>> Does perf support different length of user-space hw_breakpoi

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

2014-05-13 Thread Frederic Weisbecker
On Tue, May 13, 2014 at 02:00:46PM +0200, Jiri Olsa wrote: > 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_BREAKPOIN

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

2014-05-13 Thread Jiri Olsa
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_BREAKPO

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

2014-05-13 Thread xiakaixu
e: >>>>> 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? >>>>> >>>

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

2014-05-13 Thread xiakaixu
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

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

2014-05-13 Thread Jiri Olsa
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

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

2014-05-13 Thread Frederic Weisbecker
On Tue, May 13, 2014 at 02:00:46PM +0200, Jiri Olsa wrote: 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

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

2014-05-13 Thread xiakaixu
于 2014/5/13 23:06, Frederic Weisbecker 写道: On Tue, May 13, 2014 at 02:00:46PM +0200, Jiri Olsa wrote: 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

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

2014-05-12 Thread xiakaixu
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 : >> >>> On Mon, May 12, 2014 at 03:52:54PM +0800, xiakaixu wrote: >>>> Hi guys, >>>> >>>> Do

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

2014-05-12 Thread Peter Zijlstra
On Mon, May 12, 2014 at 04:20:44PM +0800, kaixu xia wrote: > 2014-05-12 16:05 GMT+08:00 Peter Zijlstra : > > > On Mon, May 12, 2014 at 03:52:54PM +0800, xiakaixu wrote: > > > Hi guys, > > > > > > Does perf support different length of user-space hw_breakpo

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

2014-05-12 Thread Peter Zijlstra
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_BREAKPO

Does perf support different length of user-space hw_breakpoint?

2014-05-12 Thread xiakaixu
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

Does perf support different length of user-space hw_breakpoint?

2014-05-12 Thread xiakaixu
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

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

2014-05-12 Thread Peter Zijlstra
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

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

2014-05-12 Thread Peter Zijlstra
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

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

2014-05-12 Thread xiakaixu
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 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