Re: [PATCH 09/17] perf tools: Detect avalibility of write_backward

2016-05-20 Thread Arnaldo Carvalho de Melo
Em Fri, May 20, 2016 at 11:31:44PM +0800, Wangnan (F) escreveu: > > > On 2016/5/13 21:08, Arnaldo Carvalho de Melo wrote: > > Em Fri, May 13, 2016 at 07:56:06AM +, Wang Nan escreveu: > > > Detect avalibility of write_backward and save the result into > > > record_opts. With write_backward the

Re: [PATCH 09/17] perf tools: Detect avalibility of write_backward

2016-05-20 Thread Wangnan (F)
On 2016/5/13 21:08, Arnaldo Carvalho de Melo wrote: Em Fri, May 13, 2016 at 07:56:06AM +, Wang Nan escreveu: Detect avalibility of write_backward and save the result into record_opts. With write_backward the start pointer of a ring buffer mapped read only can be found reliably. We have pe

Re: [PATCH 09/17] perf tools: Detect avalibility of write_backward

2016-05-13 Thread Arnaldo Carvalho de Melo
Em Fri, May 13, 2016 at 07:56:06AM +, Wang Nan escreveu: > Detect avalibility of write_backward and save the result into > record_opts. With write_backward the start pointer of a ring > buffer mapped read only can be found reliably. We have perf_missing_features for that, please try to use it.

[PATCH 09/17] perf tools: Detect avalibility of write_backward

2016-05-13 Thread Wang Nan
Detect avalibility of write_backward and save the result into record_opts. With write_backward the start pointer of a ring buffer mapped read only can be found reliably. Signed-off-by: Wang Nan Signed-off-by: He Kuang Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyun