Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 76 insertions, 0 deletions

diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
new file mode 100644
index 000000000..1e3823fa7
--- /dev/null
+++ b/kernel/gcov/Kconfig
@@ -0,0 +1,76 @@
+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
+	---help---
+	The gcov format is usually determined by the GCC version, and the
+	default is chosen according to your GCC version. However, there are
+	exceptions where format changes are integrated in lower-version GCCs.
+	In such a case, change this option to adjust the format used in the
+	kernel accordingly.
+
+config GCOV_FORMAT_3_4
+	bool "GCC 3.4 format"
+	depends on CC_IS_GCC && GCC_VERSION < 40700
+	---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