Re: [RFC PATCH] ftrace: support boot level tracing

2018-03-22 Thread Steven Rostedt
On Tue, 20 Mar 2018 23:35:46 + Abderrahmane Benbachir wrote: > Steven Rostedt a écrit : > > > On Tue, 20 Mar 2018 14:22:56 -0400 > > Abderrahmane Benbachir wrote: > > > > Would something like this work for you? > > Yes this is working great. I have also instrumented console and security

Re: [RFC PATCH] ftrace: support boot level tracing

2018-03-20 Thread Abderrahmane Benbachir
Steven Rostedt a écrit : On Tue, 20 Mar 2018 14:22:56 -0400 Abderrahmane Benbachir wrote: Would something like this work for you? Yes this is working great. I have also instrumented console and security initcalls, I used your previous patch, changes are below. + trace_initcall_leve

Re: [RFC PATCH] ftrace: support boot level tracing

2018-03-20 Thread Steven Rostedt
On Tue, 20 Mar 2018 14:22:56 -0400 Abderrahmane Benbachir wrote: > Hi Steve. > > Initcall's tracing support have been recently added to ftrace, which enables > detecting latencies within each initcall function. The main concern here is, > enabling initcall's tracing (which is fine-grained) will

[RFC PATCH] ftrace: support boot level tracing

2018-03-20 Thread Abderrahmane Benbachir
Hi Steve. Initcall's tracing support have been recently added to ftrace, which enables detecting latencies within each initcall function. The main concern here is, enabling initcall's tracing (which is fine-grained) will add a lots of overhead during boot-up. So with boot level tracing we can get