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

	  This tracer gets called from the context switch and records

	  all switching of tasks.

	  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

config STACK_TRACER

	bool "Trace max stack"

	bool "Trace max stack"

	depends on HAVE_FTRACE

	depends on HAVE_FTRACE

kernel/trace/Makefile

+1 −0
Original line number Original line 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_NOP_TRACER) += trace_nop.o

obj-$(CONFIG_STACK_TRACER) += trace_stack.o

obj-$(CONFIG_STACK_TRACER) += trace_stack.o

obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o

obj-$(CONFIG_MMIOTRACE) += trace_mmiotrace.o

obj-$(CONFIG_BOOT_TRACER) += trace_boot.o





libftrace-y := ftrace.o
 
libftrace-y := ftrace.o