summaryrefslogtreecommitdiffstats
path: root/kernel/trace/Kconfig
diff options
context:
space:
mode:
authorMarkus Metzger <markus.t.metzger@intel.com>2008-11-25 09:24:15 +0100
committerIngo Molnar <mingo@elte.hu>2008-11-25 17:31:13 +0100
commit1e9b51c28312f7334394aa30be56ff52c2b65b7e (patch)
treec0a231d83541263ee938e3452475409323e4e9a9 /kernel/trace/Kconfig
parentx86, ftrace: call trace->open() before stopping tracing; add trace->print_hea... (diff)
downloadlinux-1e9b51c28312f7334394aa30be56ff52c2b65b7e.tar.xz
linux-1e9b51c28312f7334394aa30be56ff52c2b65b7e.zip
x86, bts, ftrace: a BTS ftrace plug-in prototype
Impact: add new ftrace plugin A prototype for a BTS ftrace plug-in. The tracer collects branch trace in a cyclic buffer for each cpu. The tracer is not configurable and the trace for each snapshot is appended when doing cat /debug/tracing/trace. This is a proof of concept that will be extended with future patches to become a (hopefully) useful tool. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/Kconfig')
-rw-r--r--kernel/trace/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 9cbf7761f498..620feadff67a 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -28,6 +28,9 @@ config HAVE_DYNAMIC_FTRACE
config HAVE_FTRACE_MCOUNT_RECORD
bool
+config HAVE_HW_BRANCH_TRACER
+ bool
+
config TRACER_MAX_TRACE
bool
@@ -233,6 +236,14 @@ config STACK_TRACER
Say N if unsure.
+config BTS_TRACER
+ depends on HAVE_HW_BRANCH_TRACER
+ bool "Trace branches"
+ select TRACING
+ help
+ This tracer records all branches on the system in a circular
+ buffer giving access to the last N branches for each cpu.
+
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"
depends on FUNCTION_TRACER