Add the performance test program

This program measures the runtime for the compositing functions. We
can observe the runtime change with the compositing size.

Author: Bennctu

.gitignore

@@ -4,6 +4,8 @@
 *.a
 demo-*
 .demo-*
+perf_tester
+.perf_tester
 
 # Swap
 [._]*.s[a-v][a-z]

Makefile

@@ -110,17 +110,20 @@ libtwin.a_files-y += backend/fbdev.c
 libtwin.a_files-y += backend/linux_input.c
 endif
 
-# Standalone application
+# Performance tester
+
 ifeq ($(CONFIG_PERFORMANCE_TEST), y)
-target-y += demo-$(BACKEND)
-demo-$(BACKEND)_depends-y += $(target.a-y)
-demo-$(BACKEND)_files-y = apps/perf.c
-demo-$(BACKEND)_includes-y := include
-demo-$(BACKEND)_ldflags-y := \
+target-$(CONFIG_PERFORMANCE_TEST) += perf_tester
+perf_tester_depends-y += $(target.a-y)
+perf_tester_files-y += apps/perf.c
+perf_tester_includes-y := include
+perf_tester_ldflags-y := \
 	$(target.a-y) \
 	$(TARGET_LIBS)
 endif
 
+# Standalone application
+
 ifeq ($(CONFIG_DEMO_APPLICATIONS), y)
 target-y += demo-$(BACKEND)
 demo-$(BACKEND)_depends-y += $(target.a-y)

configs/Kconfig

@@ -58,15 +58,19 @@ config LOADER_GIF
 
 endmenu
 
-choice
-    prompt "Application Selection"
-    default DEMO_APPLICATIONS
+menu "Performance Testers"
 
 config PERFORMANCE_TEST
-    bool "Built performance test"
+    bool "Build composite tester"
+    default y
+
+endmenu
+
+menu "Demo Applications"
 
 config DEMO_APPLICATIONS
     bool "Build demo applications"
+    default y
 
 config DEMO_MULTI
     bool "Build multi demo"
@@ -102,4 +106,4 @@ config DEMO_ANIMATION
     bool "Build animation demo"
     default y
     depends on DEMO_APPLICATIONS 
-endchoice
+endmenu