diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2023-04-15 13:01:10 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-04-26 04:03:14 +0300 |
| commit | 96928d9032a7c34f12a88df879665562bcebf59a (patch) | |
| tree | b25e52ee726d90ad73a4591b2eafa67d5cd3ae85 /include/linux/seq_buf.h | |
| parent | c7bdb07902e0b633795372665d0154e7267ecd0e (diff) | |
| download | linux-96928d9032a7c34f12a88df879665562bcebf59a.tar.xz | |
seq_buf: Add seq_buf_do_printk() helper
Sometimes we use seq_buf to format a string buffer, which
we then pass to printk(). However, in certain situations
the seq_buf string buffer can get too big, exceeding the
PRINTKRB_RECORD_MAX bytes limit, and causing printk() to
truncate the string.
Add a new seq_buf helper. This helper prints the seq_buf
string buffer line by line, using \n as a delimiter,
rather than passing the whole string buffer to printk()
at once.
Link: https://lkml.kernel.org/r/20230415100110.1419872-1-senozhatsky@chromium.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/seq_buf.h')
| -rw-r--r-- | include/linux/seq_buf.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index 5b31c5147969..515d7fcb9634 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -159,4 +159,6 @@ extern int seq_buf_bprintf(struct seq_buf *s, const char *fmt, const u32 *binary); #endif +void seq_buf_do_printk(struct seq_buf *s, const char *lvl); + #endif /* _LINUX_SEQ_BUF_H */ |