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| author | Petr Mladek <pmladek@suse.com> | 2016-12-13 03:45:53 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-13 05:55:09 +0300 |
| commit | 0a4824bf8f8b88ba62c3c6e01608e8bfc2a99a17 (patch) | |
| tree | c13c2edecb50c1fe935c90aadcaea61e99586274 /sound/core/misc.c | |
| parent | 262c5e86fec7cfd59754732001a9ff5b13eba501 (diff) | |
| download | linux-0a4824bf8f8b88ba62c3c6e01608e8bfc2a99a17.tar.xz | |
printk/sound: 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 allows to copy only the real message level. We should ignore
KERN_CONT because <filename:line> is added for each message. By other
words, we want to know where each piece of the line comes from.
[pmladek@suse.com: fix a check of the valid message level]
Link: http://lkml.kernel.org/r/20161111183444.GE2145@dhcp128.suse.cz
Link: http://lkml.kernel.org/r/1478695291-12169-5-git-send-email-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Cc: Joe Perches <joe@perches.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'sound/core/misc.c')
| -rw-r--r-- | sound/core/misc.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/sound/core/misc.c b/sound/core/misc.c index f2e8226c88fb..21b228046e88 100644 --- a/sound/core/misc.c +++ b/sound/core/misc.c @@ -71,6 +71,7 @@ void __snd_printk(unsigned int level, const char *path, int line, int kern_level; struct va_format vaf; char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; + bool level_found = false; #endif #ifdef CONFIG_SND_DEBUG @@ -83,15 +84,22 @@ void __snd_printk(unsigned int level, const char *path, int line, vaf.fmt = format; vaf.va = &args; - kern_level = printk_get_level(format); - if (kern_level) { - const char *end_of_header = printk_skip_level(format); - memcpy(verbose_fmt, format, end_of_header - format); + while ((kern_level = printk_get_level(vaf.fmt)) != 0) { + const char *end_of_header = printk_skip_level(vaf.fmt); + + /* Ignore KERN_CONT. We print filename:line for each piece. */ + if (kern_level >= '0' && kern_level <= '7') { + memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt); + level_found = true; + } + vaf.fmt = end_of_header; - } else if (level) + } + + if (!level_found && level) memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1); - printk(verbose_fmt, sanity_file_name(path), line, &vaf); + printk(verbose_fmt, sanity_file_name(path), line, &vaf); #else vprintk(format, args); #endif |