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| author |   Frédéric Weisbecker <fweisbec@gmail.com> | 2008-09-23 11:36:20 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-10-14 10:38:49 +0200 |
| commit | 1f5c2abbdeb2bb07b20c6a66bfecefe6c867b1ee (patch) | |
| tree | 0ba861c8817994f3c46446368b806f54c037b09d /kernel/trace | |
| parent | tracing/ftrace: make tracing suitable to run the boot tracer (diff) | |
| download | linux-dev-1f5c2abbdeb2bb07b20c6a66bfecefe6c867b1ee.tar.xz linux-dev-1f5c2abbdeb2bb07b20c6a66bfecefe6c867b1ee.zip | |
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 <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/Kconfig | 12 | ||||
| -rw-r--r-- | kernel/trace/Makefile | 1 |
2 files changed, 13 insertions, 0 deletions
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 |