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SubjectRe: [PATCH V6] GCOV: Add config to check the preqequisites situation
Hi All:
Does this patch need more modification?



> 发件人: gengcixi@gmail.com <gengcixi@gmail.com>
> 发送时间: 2020年6月18日 18:08
> 收件人: gregkh@linuxfoundation.org; jslaby@suse.com; oberpar@linux.ibm.com; linux-serial@vger.kernel.org; linux-kernel@vger.kernel.org
> 抄送: orsonzhai@gmail.com; zhang.lyra@gmail.com; 耿慈熙 (Cixi Geng/10039)
> 主题: [PATCH V6] GCOV: Add config to check the preqequisites situation
>
> From: Cixi Geng <cixi.geng1@unisoc.com>
>
> 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@unisoc.com>
> ---
> drivers/tty/serial/Kconfig | 7 +++++++
> drivers/tty/serial/Makefile | 1 +
> kernel/gcov/Kconfig | 10 ++++++++++
> 3 files changed, 18 insertions(+)
>
> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
> index adf9e80e7dc9..6df002370f18 100644
> --- a/drivers/tty/serial/Kconfig
> +++ b/drivers/tty/serial/Kconfig
> @@ -1566,3 +1566,10 @@ 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 3941a9c48f83..f415c4aaf0ab 100644
> --- a/kernel/gcov/Kconfig
> +++ b/kernel/gcov/Kconfig
> @@ -51,6 +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"
> + default 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.
> +
> choice
> prompt "Specify GCOV format"
> depends on GCOV_KERNEL
> --
> 2.17.1

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