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Subject[PATCH 18/18] Create config option for enabling IRQ tracepoints
Date
Signed-off-by: Jan Kara <jack@suse.cz>
---
include/trace/events/irq.h | 2 ++
kernel/trace/Kconfig | 6 ++++++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index 0e4cfb6..dd9cdb7 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -1,5 +1,7 @@
#undef TRACE_SYSTEM
+#undef TRACE_CONFIG
#define TRACE_SYSTEM irq
+#define TRACE_CONFIG CONFIG_IRQ_TRACER

#if !defined(_TRACE_IRQ_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_IRQ_H
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index abcd529..7893ea4 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -152,6 +152,10 @@ config FUNCTION_GRAPH_TRACER
address on the current task structure into a stack of calls.


+# Config option to determine whether IRQ tracepoins should be compiled
+config IRQ_TRACER
+ bool
+
config IRQSOFF_TRACER
bool "Interrupts-off Latency Tracer"
default n
@@ -161,6 +165,7 @@ config IRQSOFF_TRACER
select GENERIC_TRACER
select TRACER_MAX_TRACE
select RING_BUFFER_ALLOW_SWAP
+ select IRQ_TRACER
help
This option measures the time spent in irqs-off critical
sections, with microsecond accuracy.
@@ -183,6 +188,7 @@ config PREEMPT_TRACER
select GENERIC_TRACER
select TRACER_MAX_TRACE
select RING_BUFFER_ALLOW_SWAP
+ select IRQ_TRACER
help
This option measures the time spent in preemption-off critical
sections, with microsecond accuracy.
--
1.6.4.2


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