Re: [RFC PATCH v3] ftrace: support very early function tracing

2018-11-30 Thread Steven Rostedt
On Wed, 24 Oct 2018 19:22:30 + Abderrahmane Benbachir wrote: > --- a/include/linux/ftrace.h > +++ b/include/linux/ftrace.h > @@ -239,6 +239,16 @@ static inline void ftrace_free_init_mem(void) { } > static inline void ftrace_free_mem(struct module *mod, void *start, > void *end) { } > #

Re: [RFC PATCH v3] ftrace: support very early function tracing

2018-11-29 Thread Abderrahmane Benbachir
+Paul, +Eddie and +Feng. Hi Steven, any update regarding this patch. I'm including some folks from server performance analysis team in microsoft, they are currently investigating early boot-up latencies using ftrace. Abderrahmane Benbachir a écrit : Hi Steve, I believe this patch is q

[RFC PATCH v3] ftrace: support very early function tracing

2018-10-24 Thread Abderrahmane Benbachir
Hi Steve, I believe this patch is quite stable. I know some folks that were using it to debug early VM/KVM handshak and seemed very helpful for them. Previous changes: PATCH v1: Initial patch PATCH v2: Removed arch specific code and use the default clock. Add more code re-usability Ad