sched: latencytop support
LatencyTOP kernel infrastructure; it measures latencies in the
scheduler and tracks it system wide and per process.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index a601093..14fb355 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -517,4 +517,18 @@
help
Provide stacktrace filter for fault-injection capabilities
+config LATENCYTOP
+ bool "Latency measuring infrastructure"
+ select FRAME_POINTER if !MIPS
+ select KALLSYMS
+ select KALLSYMS_ALL
+ select STACKTRACE
+ select SCHEDSTATS
+ select SCHED_DEBUG
+ depends on X86 || X86_64
+ help
+ Enable this option if you want to use the LatencyTOP tool
+ to find out which userspace is blocking on what kernel operations.
+
+
source "samples/Kconfig"