mmiotrace: add user documentation
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 1d6de0d..b28ace2 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -180,12 +180,10 @@
help
Mmiotrace traces Memory Mapped I/O access and is meant for
debugging and reverse engineering. It is called from the ioremap
- implementation and works via page faults. A user space program is
- required to collect the MMIO data from debugfs files.
- Tracing is disabled by default and can be enabled from a debugfs
- file.
+ implementation and works via page faults. Tracing is disabled by
+ default and can be enabled run-time.
- See http://nouveau.freedesktop.org/wiki/MmioTrace
+ See Documentation/tracers/mmiotrace.txt.
If you are not helping to develop drivers, say N.
config MMIOTRACE_TEST