Hi All: Does this patch need more modification? <gengcixi@xxxxxxxxx> 于2020年7月27日周一 下午4:51写道： > > From: Cixi Geng <cixi.geng1@xxxxxxxxxx> > > Introduce new configuration option GCOV_PROFILE_PREREQS that can be > used to check whether the prerequisites for enabling gcov profiling > for specific files and directories are met. > > Only add SERIAL_GCOV for an example. > > Signed-off-by: Cixi Geng <cixi.geng1@xxxxxxxxxx> > --- > drivers/tty/serial/Kconfig | 7 +++++++ > drivers/tty/serial/Makefile | 1 + > kernel/gcov/Kconfig | 12 ++++++++++++ > 3 files changed, 20 insertions(+) > > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig > index 780908d43557..55b128b6b31d 100644 > --- a/drivers/tty/serial/Kconfig > +++ b/drivers/tty/serial/Kconfig > @@ -1576,3 +1576,10 @@ endmenu > > config SERIAL_MCTRL_GPIO > tristate > + > +config SERIAL_GCOV > + bool "Enable profile gcov for serial directory" > + depends on GCOV_PROFILE_PREREQS > + help > + The SERIAL_GCOV will add Gcov profiling flags when kernel compiles. > + Say 'Y' here if you want the gcov data for the serial directory, > diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile > index d056ee6cca33..17272733db95 100644 > --- a/drivers/tty/serial/Makefile > +++ b/drivers/tty/serial/Makefile > @@ -3,6 +3,7 @@ > # Makefile for the kernel serial device drivers. > # > > +GCOV_PROFILE := $(CONFIG_SERIAL_GCOV) > obj-$(CONFIG_SERIAL_CORE) += serial_core.o > > obj-$(CONFIG_SERIAL_EARLYCON) += earlycon.o > diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig > index 3110c77230c7..bb2e1fb85743 100644 > --- a/kernel/gcov/Kconfig > +++ b/kernel/gcov/Kconfig > @@ -51,4 +51,16 @@ config GCOV_PROFILE_ALL > larger and run slower. Also be sure to exclude files from profiling > which are not linked to the kernel image to prevent linker errors. > > +config GCOV_PROFILE_PREREQS > + bool "Profile Kernel for prereqs" > + depends on GCOV_KERNEL > + depends on !COMPILE_TEST > + def_bool y if GCOV_KERNEL && !COMPILE_TEST > + help > + This options activates profiling for the specified kernel modules. > + > + When some modules need Gcov data, enable this config, then configure > + with gcov on the corresponding modules,The directories or files of > + these modules will be added profiling flags after kernel compile. > + > endmenu > -- > 2.17.1 >
