diff options
Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 434c840e2d82..af7dad126c13 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -160,6 +160,17 @@ config FUNCTION_GRAPH_TRACER address on the current task structure into a stack of calls. +config PREEMPTIRQ_EVENTS + bool "Enable trace events for preempt and irq disable/enable" + select TRACE_IRQFLAGS + depends on DEBUG_PREEMPT || !PROVE_LOCKING + default n + help + Enable tracing of disable and enable events for preemption and irqs. + For tracing preempt disable/enable events, DEBUG_PREEMPT must be + enabled. For tracing irq disable/enable events, PROVE_LOCKING must + be disabled. + config IRQSOFF_TRACER bool "Interrupts-off Latency Tracer" default n @@ -224,7 +235,7 @@ config HWLAT_TRACER select GENERIC_TRACER help This tracer, when enabled will create one or more kernel threads, - depening on what the cpumask file is set to, which each thread + depending on what the cpumask file is set to, which each thread spinning in a loop looking for interruptions caused by something other than the kernel. For example, if a System Management Interrupt (SMI) takes a noticeable amount of @@ -239,7 +250,7 @@ config HWLAT_TRACER iteration A kernel thread is created that will spin with interrupts disabled - for "width" microseconds in every "widow" cycle. It will not spin + for "width" microseconds in every "window" cycle. It will not spin for "window - width" microseconds, where the system can continue to operate. |