[OE-core] [PATCH 1/3] perf: add perf.inc

[tom.zanussi at intel.com]

From: Tom Zanussi <tom.zanussi at intel.com>

Add a perf.inc to contain utility functions and definitions and to
avoid cluttering up the main recipe.

Signed-off-by: Tom Zanussi <tom.zanussi at intel.com>
---
 meta/recipes-kernel/perf/perf.inc    |   22 ++++++++++++++++++++++
 meta/recipes-kernel/perf/perf_3.4.bb |    2 ++
 2 files changed, 24 insertions(+), 0 deletions(-)
 create mode 100644 meta/recipes-kernel/perf/perf.inc

diff --git a/meta/recipes-kernel/perf/perf.inc b/meta/recipes-kernel/perf/perf.inc
new file mode 100644
index 0000000..d112751
--- /dev/null
+++ b/meta/recipes-kernel/perf/perf.inc
@@ -0,0 +1,22 @@
+PERF_FEATURES_ENABLE ?= "perf-scripting perf-tui"
+
+def perf_feature_enabled(feature, trueval, falseval, d):
+    """
+    Check which perf features are enabled.
+
+    The PERF_FEATURES_ENABLE variable lists the perf features to
+    enable.  Override it if you want something different from what's
+    listed above, which is the default.  If empty, the build won't
+    enable any features (which may be exactly what you want, just a
+    barebones perf without any extra baggage, what you get if you
+    specify an empty feature list).
+
+    Available perf features:
+      perf-scripting: enable support for Perl and Python bindings
+      perf-tui: enable support for the perf TUI (via libnewt)
+
+    """
+    enabled_features = d.getVar("PERF_FEATURES_ENABLE", True) or ""
+    if feature in enabled_features:
+		return trueval
+    return falseval
diff --git a/meta/recipes-kernel/perf/perf_3.4.bb b/meta/recipes-kernel/perf/perf_3.4.bb
index 381332e..d494243 100644
--- a/meta/recipes-kernel/perf/perf_3.4.bb
+++ b/meta/recipes-kernel/perf/perf_3.4.bb
@@ -11,6 +11,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
 
 PR = "r1"
 
+require perf.inc
+
 BUILDPERF_libc-uclibc = "no"
 
 DEPENDS = "virtual/kernel \
-- 
1.7.0.4