Re: [PATCH 2/2] perf_event_open.2: Document write_backward

2016-10-23 Thread Wangnan (F)
On 2016/10/22 18:05, Michael Kerrisk (man-pages) wrote: On 10/21/2016 11:25 PM, Vince Weaver wrote: On Fri, 21 Oct 2016, Wang Nan wrote: context_switch : 1, /* context switch data */ - - __reserved_1 : 37; + write_backward : 1, /* Write ring buffer from en

Re: [PATCH 2/2] perf_event_open.2: Document write_backward

2016-10-22 Thread Michael Kerrisk (man-pages)
On 10/21/2016 11:25 PM, Vince Weaver wrote: > On Fri, 21 Oct 2016, Wang Nan wrote: > >>context_switch : 1, /* context switch data */ >> - >> - __reserved_1 : 37; >> + write_backward : 1, /* Write ring buffer from end to beginning >> */ >> + __reserved_

Re: [PATCH 2/2] perf_event_open.2: Document write_backward

2016-10-21 Thread Vince Weaver
On Fri, 21 Oct 2016, Wang Nan wrote: >context_switch : 1, /* context switch data */ > - > - __reserved_1 : 37; > + write_backward : 1, /* Write ring buffer from end to beginning */ > + __reserved_1 : 36; This removes a blank line, not sure if intenti

[PATCH 2/2] perf_event_open.2: Document write_backward

2016-10-21 Thread Wang Nan
Linux 4.7 (9ecda41acb971ebd07c8fb35faf24005c0baea12) introduces write_backward attribute to perf_event_attr. Document this feature. Signed-off-by: Wang Nan Cc: Michael Kerrisk --- man2/perf_event_open.2 | 56 +++--- 1 file changed, 53 insertions(+), 3