From: gengcixi@gmail.com
To: gregkh@linuxfoundation.org, jslaby@suse.com,
oberpar@linux.ibm.com, linux-serial@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: orsonzhai@gmail.com, zhang.lyra@gmail.com,
Cixi Geng <cixi.geng1@unisoc.com>
Subject: [PATCH V7] GCOV: Add config to check the preqequisites situation
Date: Mon, 27 Jul 2020 16:51:32 +0800 [thread overview]
Message-ID: <20200727085132.29754-1-gengcixi@gmail.com> (raw)
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 | 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
next reply other threads:[~2020-07-27 8:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 8:51 gengcixi [this message]
2020-08-20 12:40 ` [PATCH V7] GCOV: Add config to check the preqequisites situation Cixi Geng
2020-09-16 12:55 ` Cixi Geng
2020-10-22 10:03 ` Peter Oberparleiter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200727085132.29754-1-gengcixi@gmail.com \
--to=gengcixi@gmail.com \
--cc=cixi.geng1@unisoc.com \
--cc=gregkh@linuxfoundation.org \
--cc=jslaby@suse.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=oberpar@linux.ibm.com \
--cc=orsonzhai@gmail.com \
--cc=zhang.lyra@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).