diff options
Diffstat (limited to 'kernel/trace/Kconfig')
| -rw-r--r-- | kernel/trace/Kconfig | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index bfa2ec46e075..49de13cae428 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -50,6 +50,9 @@ config HAVE_DYNAMIC_FTRACE_WITH_REGS config HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS bool +config HAVE_SINGLE_FTRACE_DIRECT_OPS + bool + config HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS bool @@ -133,6 +136,7 @@ config BUILDTIME_MCOUNT_SORT config TRACER_MAX_TRACE bool + select TRACER_SNAPSHOT config TRACE_CLOCK bool @@ -422,7 +426,6 @@ config IRQSOFF_TRACER select GENERIC_TRACER select TRACER_MAX_TRACE select RING_BUFFER_ALLOW_SWAP - select TRACER_SNAPSHOT select TRACER_SNAPSHOT_PER_CPU_SWAP help This option measures the time spent in irqs-off critical @@ -445,7 +448,6 @@ config PREEMPT_TRACER select GENERIC_TRACER select TRACER_MAX_TRACE select RING_BUFFER_ALLOW_SWAP - select TRACER_SNAPSHOT select TRACER_SNAPSHOT_PER_CPU_SWAP select TRACE_PREEMPT_TOGGLE help @@ -467,7 +469,6 @@ config SCHED_TRACER select GENERIC_TRACER select CONTEXT_SWITCH_TRACER select TRACER_MAX_TRACE - select TRACER_SNAPSHOT help This tracer tracks the latency of the highest priority task to be scheduled in, starting from the point it has woken up. @@ -617,7 +618,6 @@ config TRACE_SYSCALL_BUF_SIZE_DEFAULT config TRACER_SNAPSHOT bool "Create a snapshot trace buffer" - select TRACER_MAX_TRACE help Allow tracing users to take snapshot of the current buffer using the ftrace interface, e.g.: @@ -625,6 +625,9 @@ config TRACER_SNAPSHOT echo 1 > /sys/kernel/tracing/snapshot cat snapshot + Note, the latency tracers select this option. To disable it, + all the latency tracers need to be disabled. + config TRACER_SNAPSHOT_PER_CPU_SWAP bool "Allow snapshot to swap per CPU" depends on TRACER_SNAPSHOT |