[PATCH next v3 2/3] printk: define CONSOLE_LOG_MAX in printk.h

From: John Ogness
Date: Mon Dec 07 2020 - 17:21:06 EST


CONSOLE_EXT_LOG_MAX for extended console messages is already defined
in printk.h. Define CONSOLE_LOG_MAX there as well so that future
changes can make use of the constant for non-extended console
messages.

Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
---
include/linux/printk.h | 1 +
kernel/printk/printk.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index fe7eb2351610..6d8f844bfdff 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -45,6 +45,7 @@ static inline const char *printk_skip_headers(const char *buffer)
}

#define CONSOLE_EXT_LOG_MAX 8192
+#define CONSOLE_LOG_MAX 1024

/* printk's without a loglevel use this.. */
#define MESSAGE_LOGLEVEL_DEFAULT CONFIG_MESSAGE_LOGLEVEL_DEFAULT
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index bf5fd2be3a05..e1f068677a74 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -410,7 +410,7 @@ static u64 clear_seq;
#else
#define PREFIX_MAX 32
#endif
-#define LOG_LINE_MAX (1024 - PREFIX_MAX)
+#define LOG_LINE_MAX (CONSOLE_LOG_MAX - PREFIX_MAX)

#define LOG_LEVEL(v) ((v) & 0x07)
#define LOG_FACILITY(v) ((v) >> 3 & 0xff)
--
2.20.1