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authorPekka Paalanen <pq@iki.fi>2008-05-12 21:20:57 +0200
committerThomas Gleixner <tglx@linutronix.de>2008-05-24 11:22:43 +0200
commitf984b51e0779a6dd30feedc41404013ca54e5d05 (patch)
treeae7e80f53707e9069a9607072a554b51c660075b /include/linux/mmiotrace.h
parentd61fc44853f46fb002228b18aa5f30db21fcd4ac (diff)
downloadop-kernel-dev-f984b51e0779a6dd30feedc41404013ca54e5d05.zip
op-kernel-dev-f984b51e0779a6dd30feedc41404013ca54e5d05.tar.gz
ftrace: add mmiotrace plugin
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>
Diffstat (limited to 'include/linux/mmiotrace.h')
-rw-r--r--include/linux/mmiotrace.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h
index cb5efd0..579b3b06 100644
--- a/include/linux/mmiotrace.h
+++ b/include/linux/mmiotrace.h
@@ -54,6 +54,12 @@ static inline void mmiotrace_iounmap(volatile void __iomem *addr)
}
#endif /* CONFIG_MMIOTRACE_HOOKS */
+/* in kernel/trace/trace_mmiotrace.c */
+extern int __init init_mmiotrace(void);
+extern void enable_mmiotrace(void);
+extern void disable_mmiotrace(void);
+extern void mmio_trace_record(u32 type, unsigned long addr, unsigned long arg);
+
#endif /* __KERNEL__ */
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