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ftrace: add mmiotrace plugin

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On Sat, 22 Mar 2008 13:07:47 +0100
Ingo Molnar <mingo@elte.hu> wrote:

> > > i'd suggest the following: pull x86.git and sched-devel.git into a
> > > single tree [the two will combine without rejects]. Then try to add a
> > > kernel/tracing/trace_mmiotrace.c ftrace plugin. The trace_sysprof.c
> > > plugin might be a good example.
> >
> > I did this and now I have mmiotrace enabled/disabled via the tracing
> > framework (what do we call this, since ftrace is one of the tracers?).
>
> cool! could you send the patches for that? (even if they are not fully
> functional yet)

Patch attached in the end. Nice to see how much code disappeared. I tried
to mark all the features I had to break with XXX-comments.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Pekka Paalanen
2008-05-12 21:20:57 +02:00
committed by Thomas Gleixner
parent d61fc44853
commit f984b51e07
5 changed files with 123 additions and 179 deletions
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3
arch/x86/Kconfig.debug
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@@ -173,7 +173,8 @@ config MMIOTRACE_HOOKS
config MMIOTRACE
bool "Memory mapped IO tracing"
depends on DEBUG_KERNEL && RELAY && DEBUG_FS
depends on DEBUG_KERNEL && RELAY
select TRACING
select MMIOTRACE_HOOKS
default y
help