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authorMike Frysinger <vapier@gentoo.org>2009-09-14 20:10:15 -0400
committerSteven Rostedt <rostedt@goodmis.org>2009-09-14 21:43:15 -0400
commit555f386c98cc93890f48fdea098936755270304b (patch)
tree1c0d9c2124327511e2e5bb26b24d305e8f701341 /kernel/trace/Kconfig
parent1f5a6b45416694ff8c0d04625f1a438a0e380add (diff)
downloadlwn-555f386c98cc93890f48fdea098936755270304b.tar.gz
lwn-555f386c98cc93890f48fdea098936755270304b.zip
ftrace: document function and function graph implementation
While implementing function tracer and function tracer graph support, I found the exact arch implementation details to be a bit lacking (and my x86 foo ain't great). So after pounding out support for the Blackfin arch, start documenting the requirements/details. Signed-off-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <1252973415-21264-1-git-send-email-vapier@gentoo.org> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig16
1 files changed, 13 insertions, 3 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index aa002cef924c..e71634604400 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -11,12 +11,18 @@ config NOP_TRACER
config HAVE_FTRACE_NMI_ENTER
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_FUNCTION_TRACER
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_FUNCTION_GRAPH_TRACER
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_FUNCTION_GRAPH_FP_TEST
bool
@@ -28,21 +34,25 @@ config HAVE_FUNCTION_GRAPH_FP_TEST
config HAVE_FUNCTION_TRACE_MCOUNT_TEST
bool
help
- This gets selected when the arch tests the function_trace_stop
- variable at the mcount call site. Otherwise, this variable
- is tested by the called function.
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_DYNAMIC_FTRACE
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_FTRACE_MCOUNT_RECORD
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config HAVE_HW_BRANCH_TRACER
bool
config HAVE_SYSCALL_TRACEPOINTS
bool
+ help
+ See Documentation/trace/ftrace-implementation.txt
config TRACER_MAX_TRACE
bool