Re: [PATCH 1/7] trace/events: Add gup trace events

2015-12-01 Thread Shi, Yang
On 12/1/2015 4:18 PM, Steven Rostedt wrote: On Tue, 01 Dec 2015 16:07:44 -0800 "Shi, Yang" wrote: On 12/1/2015 3:56 PM, Steven Rostedt wrote: On Tue, 1 Dec 2015 15:06:11 -0800 Yang Shi wrote: page-faults events record the invoke to handle_mm_fault, but the invoke may come from do_page_fau

Re: [PATCH 1/7] trace/events: Add gup trace events

2015-12-01 Thread Steven Rostedt
On Tue, 01 Dec 2015 16:07:44 -0800 "Shi, Yang" wrote: > On 12/1/2015 3:56 PM, Steven Rostedt wrote: > > On Tue, 1 Dec 2015 15:06:11 -0800 > > Yang Shi wrote: > > > >> page-faults events record the invoke to handle_mm_fault, but the invoke > >> may come from do_page_fault or gup. In some use c

Re: [PATCH 1/7] trace/events: Add gup trace events

2015-12-01 Thread Shi, Yang
On 12/1/2015 3:56 PM, Steven Rostedt wrote: On Tue, 1 Dec 2015 15:06:11 -0800 Yang Shi wrote: page-faults events record the invoke to handle_mm_fault, but the invoke may come from do_page_fault or gup. In some use cases, the finer event count mey be needed, so add trace events support for: _

Re: [PATCH 1/7] trace/events: Add gup trace events

2015-12-01 Thread Steven Rostedt
On Tue, 1 Dec 2015 15:06:11 -0800 Yang Shi wrote: > page-faults events record the invoke to handle_mm_fault, but the invoke > may come from do_page_fault or gup. In some use cases, the finer event count > mey be needed, so add trace events support for: > > __get_user_pages > __get_user_pages_fa