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| author | Steven Rostedt <srostedt@redhat.com> | 2009-02-02 21:38:33 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-03 06:26:12 +0100 |
| commit | 79fb0768fbd371f3b94d909f51f587b3a24ab272 (patch) | |
| tree | f8a891fcfae6eb9eeef10e9f8b343b813371789c /kernel/trace/Kconfig | |
| parent | b2821ae68b14480bfc85ea1629537163310bc5cd (diff) | |
| download | blackbird-op-linux-79fb0768fbd371f3b94d909f51f587b3a24ab272.tar.gz blackbird-op-linux-79fb0768fbd371f3b94d909f51f587b3a24ab272.zip | |
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/Kconfig | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index dde1d46f77e5..28f2644484d9 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 |
