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authorOlof Johansson <olof@lixom.net>2016-12-13 03:45:56 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-13 05:55:09 +0300
commita8cfdc68f6cfc0c7ffc6d664406fe7f06f17eef4 (patch)
tree3a4aa16fa248384237ec776eddf4046ef9e8f59e /include/linux/printk.h
parent0a4824bf8f8b88ba62c3c6e01608e8bfc2a99a17 (diff)
downloadlinux-a8cfdc68f6cfc0c7ffc6d664406fe7f06f17eef4.tar.xz
printk: add Kconfig option to set default console loglevel
Add a configuration option to set the default console loglevel. This is, as before, still possible to override at runtime through bootargs (loglevel=<x>), sysrq and /proc/printk. There are cases where adding additional arguments on the commandline is impractical, and changing the default for the kernel when being built makes more sense. Provide such a method here, for those who choose to do so. Also, while touching this code, clarify the difference between MESSAGE_LOGLEVEL_DEFAULT and CONSOLE_LOGLEVEL_DEFAULT. Link: http://lkml.kernel.org/r/1479676829-30031-1-git-send-email-olof@lixom.net Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/printk.h')
-rw-r--r--include/linux/printk.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h
index afe8ccec1672..3472cc6b7a60 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -50,10 +50,15 @@ static inline const char *printk_skip_headers(const char *buffer)
#define CONSOLE_LOGLEVEL_SILENT 0 /* Mum's the word */
#define CONSOLE_LOGLEVEL_MIN 1 /* Minimum loglevel we let people use */
#define CONSOLE_LOGLEVEL_QUIET 4 /* Shhh ..., when booted with "quiet" */
-#define CONSOLE_LOGLEVEL_DEFAULT 7 /* anything MORE serious than KERN_DEBUG */
#define CONSOLE_LOGLEVEL_DEBUG 10 /* issue debug messages */
#define CONSOLE_LOGLEVEL_MOTORMOUTH 15 /* You can't shut this one up */
+/*
+ * Default used to be hard-coded at 7, we're now allowing it to be set from
+ * kernel config.
+ */
+#define CONSOLE_LOGLEVEL_DEFAULT CONFIG_CONSOLE_LOGLEVEL_DEFAULT
+
extern int console_printk[];
#define console_loglevel (console_printk[0])