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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-09-16 14:10:40 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-10-04 10:31:17 -0400 |
| commit | b44b30260ffa3dc82f4bb98b022483bb09e95353 (patch) | |
| tree | 2d7e5204e8b5ab3d6a0655ef2b5af2e09838ec1e /configs/omapl138_lcdk_defconfig | |
| parent | 7fea7b1a37ad2b1c1e92bd87f7c6a1877d70e579 (diff) | |
printk: collect printk stuff into <linux/printk.h> with loglevel support
When we import code from Linux, with regular re-sync planned, we want
to use printk() and pr_*(). U-Boot does not support them in a clean
way. So, people end up with local macros, or compat headers here and
there, then we occasionally see build errors of definition conflicts.
We have include/linux/compat.h, but putting all sorts of unrelated
things into a single header is just a temporal workaround. Hence this
patch, to find the best home for all printk variants. If you want to
use printk() and friends, please include <linux/printk.h>. This header
is self-contained, and pulls in only a few headers.
When I was testing this clean-up, I noticed the image size exceeded
its platform limit on some boards. This is because all pr_*() that
were previously defined as no-op in include/linux/mtd/mtd.h (unless
CONFIG_MTD_DEBUG is set), are now enabled.
To make such boards happy, this commit also implements CONFIG_LOGLEVEL.
The concept is similar to the kernel parameter "loglevel". (Actually,
the Kconfig help message was taken from kernel-paremeter.txt of Linux)
Messages with a loglevel smaller than console loglevel will be printed.
The difference is the loglevel is build-time determined. To save the
image size, lower priority pr_*() are compiled out. I set the default
of CONFIG_LOGLEVEL to 6, i.e. pr_notice and higher priority messages
are compiled in.
I adjusted CONFIG_LOGLEVEL to avoid build error for some boards.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add in SPL_LOGLEVEL that is the same as LOGLEVEL]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'configs/omapl138_lcdk_defconfig')
| -rw-r--r-- | configs/omapl138_lcdk_defconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig index c95134bcf9..3e9eb4fa84 100644 --- a/configs/omapl138_lcdk_defconfig +++ b/configs/omapl138_lcdk_defconfig @@ -8,6 +8,7 @@ CONFIG_SPL_MMC_SUPPORT=y CONFIG_SPL_SERIAL_SUPPORT=y CONFIG_SPL_NAND_SUPPORT=y CONFIG_BOOTDELAY=3 +CONFIG_LOGLEVEL=4 CONFIG_VERSION_VARIABLE=y # CONFIG_DISPLAY_CPUINFO is not set # CONFIG_DISPLAY_BOARDINFO is not set |