Eric Lee / smarc-fsl-linux-kernel

Blame view

kernel/gcov/Kconfig 2.08 KB
edit raw normal view history
81f7e3824   Eric Lee   Initial Release, ... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
  menu "GCOV-based kernel profiling"
  
  config GCOV_KERNEL
  	bool "Enable gcov-based kernel profiling"
  	depends on DEBUG_FS
  	select CONSTRUCTORS if !UML
  	default n
  	---help---
  	This option enables gcov-based code profiling (e.g. for code coverage
  	measurements).
  
  	If unsure, say N.
  
  	Additionally specify CONFIG_GCOV_PROFILE_ALL=y to get profiling data
  	for the entire kernel. To enable profiling for specific files or
  	directories, add a line similar to the following to the respective
  	Makefile:
  
  	For a single file (e.g. main.o):
  	        GCOV_PROFILE_main.o := y
  
  	For all files in one directory:
  	        GCOV_PROFILE := y
  
  	To exclude files from being profiled even when CONFIG_GCOV_PROFILE_ALL
  	is specified, use:
  
  	        GCOV_PROFILE_main.o := n
  	and:
  	        GCOV_PROFILE := n
  
  	Note that the debugfs filesystem has to be mounted to access
  	profiling data.
  
  config ARCH_HAS_GCOV_PROFILE_ALL
  	def_bool n
  
  config GCOV_PROFILE_ALL
  	bool "Profile entire Kernel"
  	depends on !COMPILE_TEST
  	depends on GCOV_KERNEL
  	depends on ARCH_HAS_GCOV_PROFILE_ALL
  	default n
  	---help---
  	This options activates profiling for the entire kernel.
  
  	If unsure, say N.
  
  	Note that a kernel compiled with profiling flags will be significantly
  	larger and run slower. Also be sure to exclude files from profiling
  	which are not linked to the kernel image to prevent linker errors.
  
  choice
  	prompt "Specify GCOV format"
  	depends on GCOV_KERNEL
  	default GCOV_FORMAT_AUTODETECT
  	---help---
  	The gcov format is usually determined by the GCC version, but there are
  	exceptions where format changes are integrated in lower-version GCCs.
  	In such a case use this option to adjust the format used in the kernel
  	accordingly.
  
  	If unsure, choose "Autodetect".
  
  config GCOV_FORMAT_AUTODETECT
  	bool "Autodetect"
  	---help---
  	Select this option to use the format that corresponds to your GCC
  	version.
  
  config GCOV_FORMAT_3_4
  	bool "GCC 3.4 format"
  	---help---
  	Select this option to use the format defined by GCC 3.4.
  
  config GCOV_FORMAT_4_7
  	bool "GCC 4.7 format"
  	---help---
  	Select this option to use the format defined by GCC 4.7.
  
  endchoice
  
  endmenu