From: Darren Hart <dvhart@linux.intel.com>
To: "poky@yoctoproject.org" <poky@yoctoproject.org>
Subject: [PATCH] linux-yocto-2.6.37: Add debugfs and ftrace features to standard ktype meta-data
Date: Mon, 03 Jan 2011 15:24:33 -0800 [thread overview]
Message-ID: <4D225AB1.7010404@linux.intel.com> (raw)
ftrace provides low impact tracing facilities and should be made
available on the main kernel - as opposed to a debug or tracing
kernel which often add enough overhead to mask subtle bugs.
These features are available on the 2.6.34 yocto kernel.
Boot and trace-cmd tested on qemux86-64.
Signed-off-by: Darren Hart <darren@dvhart.com>
CC: Bruce Ashfield <bruce.ashfield@windriver.com>
CC: Tom Zanussi <tom.zanussi@intel.com>
---
meta/cfg/kernel-cache/features/debugfs/debugfs.cfg | 1 +
meta/cfg/kernel-cache/features/debugfs/debugfs.scc | 1 +
meta/cfg/kernel-cache/features/ftrace/ftrace.cfg | 2 ++
meta/cfg/kernel-cache/features/ftrace/ftrace.scc | 1 +
meta/cfg/kernel-cache/ktypes/standard/standard.scc | 4 ++++
5 files changed, 9 insertions(+), 0 deletions(-)
create mode 100644 meta/cfg/kernel-cache/features/debugfs/debugfs.cfg
create mode 100644 meta/cfg/kernel-cache/features/debugfs/debugfs.scc
create mode 100644 meta/cfg/kernel-cache/features/ftrace/ftrace.cfg
create mode 100644 meta/cfg/kernel-cache/features/ftrace/ftrace.scc
diff --git a/meta/cfg/kernel-cache/features/debugfs/debugfs.cfg b/meta/cfg/kernel-cache/features/debugfs/debugfs.cfg
new file mode 100644
index 0000000..39c2d26
--- /dev/null
+++ b/meta/cfg/kernel-cache/features/debugfs/debugfs.cfg
@@ -0,0 +1 @@
+CONFIG_DEBUG_FS=y
diff --git a/meta/cfg/kernel-cache/features/debugfs/debugfs.scc b/meta/cfg/kernel-cache/features/debugfs/debugfs.scc
new file mode 100644
index 0000000..8f84947
--- /dev/null
+++ b/meta/cfg/kernel-cache/features/debugfs/debugfs.scc
@@ -0,0 +1 @@
+kconf non-hardware debugfs.cfg
diff --git a/meta/cfg/kernel-cache/features/ftrace/ftrace.cfg b/meta/cfg/kernel-cache/features/ftrace/ftrace.cfg
new file mode 100644
index 0000000..bab800c
--- /dev/null
+++ b/meta/cfg/kernel-cache/features/ftrace/ftrace.cfg
@@ -0,0 +1,2 @@
+CONFIG_FUNCTION_TRACER=y
+CONFIG_FUNCTION_GRAPH_TRACER=y
diff --git a/meta/cfg/kernel-cache/features/ftrace/ftrace.scc b/meta/cfg/kernel-cache/features/ftrace/ftrace.scc
new file mode 100644
index 0000000..c92e30f
--- /dev/null
+++ b/meta/cfg/kernel-cache/features/ftrace/ftrace.scc
@@ -0,0 +1 @@
+kconf non-hardware ftrace.cfg
diff --git a/meta/cfg/kernel-cache/ktypes/standard/standard.scc b/meta/cfg/kernel-cache/ktypes/standard/standard.scc
index 9fa6c1e..8212465 100644
--- a/meta/cfg/kernel-cache/ktypes/standard/standard.scc
+++ b/meta/cfg/kernel-cache/ktypes/standard/standard.scc
@@ -33,6 +33,10 @@ tag powerpc
include features/hrt/hrt.scc
+include features/debugfs/debugfs.scc
+
+include features/ftrace/ftrace.scc
+
include patches/wrs_patches.scc
# #include features/ieee_float/ieee_float.scc
--
1.7.1
--
Darren Hart
Yocto Linux Kernel
next reply other threads:[~2011-01-03 23:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-03 23:24 Darren Hart [this message]
2011-01-04 20:51 ` [PATCH] linux-yocto-2.6.37: Add debugfs and ftrace features to standard ktype meta-data Bruce Ashfield
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