From 1f5c2abbdeb2bb07b20c6a66bfecefe6c867b1ee Mon Sep 17 00:00:00 2001 From: Frédéric Weisbecker Date: Tue, 23 Sep 2008 11:36:20 +0100 Subject: 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: Frederic Weisbecker Signed-off-by: Ingo Molnar --- kernel/trace/Kconfig | 12 ++++++++++++ kernel/trace/Makefile | 1 + 2 files changed, 13 insertions(+) diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 254328dec672..81a17ef6b942 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -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 diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index 73ba13f5a461..35a07f7cfa86 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile @@ -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 -- cgit v1.2.3