Commit 1f5c2abb authored by Frédéric Weisbecker's avatar Frédéric Weisbecker Committed by Ingo Molnar
Browse files

tracing/ftrace: give an entry on the config for boot tracer 



Bring the entry to choose the boot tracer on the kernel config.

Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent b5ad384e

kernel/trace/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -116,6 +116,18 @@ config CONTEXT_SWITCH_TRACER 
	  This tracer gets called from the context switch and records

	  all switching of tasks.



config BOOT_TRACER

	bool "Trace boot initcalls"

	depends on HAVE_FTRACE

	depends on DEBUG_KERNEL

	select TRACING

	help

	  This tracer helps developers to optimize boot times: it records

	  the timings of the initcalls. Its aim is to be parsed by the

	  /scripts/bootgraph.pl tool to produce pretty graphics about

	  boot inefficiencies, giving a visual representation of the

	  delays during initcalls.



config STACK_TRACER

	bool "Trace max stack"

	depends on HAVE_FTRACE

kernel/trace/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -22,5 +22,6 @@ obj-$(CONFIG_SCHED_TRACER) += trace_sched_wakeup.o 
obj-$(CONFIG_NOP_TRACER) += trace_nop.o

obj-$(CONFIG_STACK_TRACER) += trace_stack.o

obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o

obj-$(CONFIG_BOOT_TRACER) += trace_boot.o



libftrace-y := ftrace.o