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

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

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frédéric Weisbecker
2008-09-23 11:36:20 +01:00
committed by Ingo Molnar
parent b5ad384e79
commit 1f5c2abbde
2 changed files with 13 additions and 0 deletions
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12
kernel/trace/Kconfig
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@@ -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

1
kernel/trace/Makefile
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@@ -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