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debug: generate call graph profile data using gprof

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This will generate profile data that can be analyzed using gprof. When
you build the application (currently for native_posix only), after
running the application you will get a file "gmon.out" with the call
graph which can be processed with gprof:

  gprof build/zephyr/zephyr.exe gmon.out > analysis.txt

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2022-04-21 10:38:32 -04:00
commit 399a0b4b31
4 changed files with 15 additions and 1 deletions
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4
arch/posix/CMakeLists.txt
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@ -24,6 +24,10 @@ zephyr_compile_options($<TARGET_PROPERTY:compiler,hosted>)
zephyr_include_directories(${BOARD_DIR})
if (CONFIG_GPROF)
zephyr_compile_options($<TARGET_PROPERTY:compiler,gprof>)
zephyr_link_libraries($<TARGET_PROPERTY:linker,gprof>)
endif()
if (CONFIG_ASAN)
zephyr_compile_options($<TARGET_PROPERTY:compiler,sanitize_address>)
zephyr_link_libraries($<TARGET_PROPERTY:linker,sanitize_address>)

2
cmake/compiler/gcc/compiler_flags.cmake
View file

@ -177,6 +177,8 @@ set_compiler_property(PROPERTY imacros -imacros)
# GCC compiler flags for sanitizing.
set_compiler_property(PROPERTY sanitize_address -fsanitize=address)
set_compiler_property(PROPERTY gprof -pg)
set_compiler_property(PROPERTY sanitize_undefined -fsanitize=undefined)
# GCC compiler flag for turning off thread-safe initialization of local statics

3
cmake/linker/ld/gcc/linker_flags.cmake
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@ -10,5 +10,6 @@ endif()
# ld/gcc linker flags for sanitizing.
check_set_linker_property(TARGET linker APPEND PROPERTY sanitize_address -lasan)
check_set_linker_property(TARGET linker APPEND PROPERTY sanitize_address -fsanitize=address)
check_set_linker_property(TARGET linker APPEND PROPERTY sanitize_undefined -fsanitize=undefined)
check_set_linker_property(TARGET linker APPEND PROPERTY gprof -pg)

7
subsys/debug/Kconfig
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@ -99,6 +99,13 @@ config DEBUG
only disables optimization, more debugging variants can be selected
from here to allow more debugging.
config GPROF
bool "Generate profiling information"
depends on ARCH_POSIX
help
Generate call graph profile data for the application that can be
analyzed with gprof
config ASAN
bool "Build with address sanitizer"
depends on ARCH_POSIX