From 497957576cf8a2150d723aedd74ea60b5d498bfe Mon Sep 17 00:00:00 2001 From: Petr Mladek Date: Mon, 12 Dec 2016 16:45:47 -0800 Subject: [PATCH] printk/kdb: handle more message headers Commit 4bcc595ccd80 ("printk: reinstate KERN_CONT for printing continuation lines") allows to define more message headers for a single message. The motivation is that continuous lines might get mixed. Therefore it make sense to define the right log level for every piece of a cont line. This patch introduces printk_skip_headers() that will skip all headers and uses it in the kdb code instead of printk_skip_level(). This approach helps to fix other printk_skip_level() users independently. Link: http://lkml.kernel.org/r/1478695291-12169-3-git-send-email-pmladek@suse.com Signed-off-by: Petr Mladek Cc: Joe Perches Cc: Sergey Senozhatsky Cc: Steven Rostedt Cc: Jason Wessel Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 8 ++++++++ kernel/debug/kdb/kdb_io.c | 2 +- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/linux/printk.h b/include/linux/printk.h index eac1af8502bb..a0859e169bc3 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -31,6 +31,14 @@ static inline const char *printk_skip_level(const char *buffer) return buffer; } +static inline const char *printk_skip_headers(const char *buffer) +{ + while (printk_get_level(buffer)) + buffer = printk_skip_level(buffer); + + return buffer; +} + #define CONSOLE_EXT_LOG_MAX 8192 /* printk's without a loglevel use this.. */ diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index fc1ef736253c..98c9011eac78 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -697,7 +697,7 @@ kdb_printit: * Write to all consoles. */ retlen = strlen(kdb_buffer); - cp = (char *) printk_skip_level(kdb_buffer); + cp = (char *) printk_skip_headers(kdb_buffer); if (!dbg_kdb_mode && kgdb_connected) { gdbstub_msg_write(cp, retlen - (cp - kdb_buffer)); } else { -- 2.30.2