1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 892ecc94a82b..896df1cf6adc 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -26,6 +26,24 @@ config FTRACE
           (the bootup default), then the overhead of the instructions is very
           small and not measurable even in micro-benchmarks.
 
+config IRQSOFF_TRACER
+        bool "Interrupts-off Latency Tracer"
+        default n
+        depends on TRACE_IRQFLAGS_SUPPORT
+        depends on GENERIC_TIME
+        select TRACE_IRQFLAGS
+        select TRACING
+        select TRACER_MAX_TRACE
+        help
+          This option measures the time spent in irqs-off critical
+          sections, with microsecond accuracy.
+
+          The default measurement method is a maximum search, which is
+          disabled by default and can be runtime (re-)started
+          via:
+
+              echo 0 > /debugfs/tracing/tracing_max_latency
+
 config SCHED_TRACER
         bool "Scheduling Latency Tracer"
         depends on DEBUG_KERNEL