aboutsummaryrefslogtreecommitdiff
path: root/kernel/trace/Kconfig
diff options
context:
space:
mode:
authorSteven Rostedt <srostedt@redhat.com>2009-02-02 21:38:33 -0500
committerIngo Molnar <mingo@elte.hu>2009-02-03 06:26:12 +0100
commit79fb0768fbd371f3b94d909f51f587b3a24ab272 (patch)
treef8a891fcfae6eb9eeef10e9f8b343b813371789c /kernel/trace/Kconfig
parentb2821ae68b14480bfc85ea1629537163310bc5cd (diff)
trace: let boot trace be chosen by command line
Now that we have a working ftrace=<tracer> function, make the boot tracer get activated by it. This way we can turn it on or off without recompiling the kernel, as well as keeping the selftests on. The selftests are disabled whenever a default tracer starts running. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig7
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index dde1d46f77e..28f2644484d 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -164,9 +164,8 @@ config BOOT_TRACER
representation of the delays during initcalls - but the raw
/debug/tracing/trace text output is readable too.
- ( Note that tracing self tests can't be enabled if this tracer is
- selected, because the self-tests are an initcall as well and that
- would invalidate the boot trace. )
+ You must pass in ftrace=initcall to the kernel command line
+ to enable this on bootup.
config TRACE_BRANCH_PROFILING
bool "Trace likely/unlikely profiler"
@@ -326,7 +325,7 @@ config FTRACE_SELFTEST
config FTRACE_STARTUP_TEST
bool "Perform a startup test on ftrace"
- depends on TRACING && DEBUG_KERNEL && !BOOT_TRACER
+ depends on TRACING && DEBUG_KERNEL
select FTRACE_SELFTEST
help
This option performs a series of startup tests on ftrace. On bootup