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authorPiotr Maziarz <piotrx.maziarz@linux.intel.com>2019-11-07 13:45:37 +0100
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2019-11-14 13:15:12 -0500
commit353cade3149c27b53260932ee3ff1ebde405976d (patch)
treedc109cd70ca402efe1e42b6c4fe5b814b39ecf71 /include/linux/seq_buf.h
parentc7411a1a126f649be71526a36d4afac9e5aefa13 (diff)
seq_buf: Add printing formatted hex dumps
Provided function is an analogue of print_hex_dump(). Implementing this function in seq_buf allows using for multiple purposes (e.g. for tracing) and therefore prevents from code duplication in every layer that uses seq_buf. print_hex_dump() is an essential part of logging data to dmesg. Adding similar capability for other purposes is beneficial to all users. Example usage: seq_buf_hex_dump(seq, "", DUMP_PREFIX_OFFSET, 16, 4, buf, ARRAY_SIZE(buf), true); Example output: 00000000: 00000000 ffffff10 ffffff32 ffff3210 ........2....2.. 00000010: ffff3210 83d00437 c0700000 00000000 .2..7.....p..... 00000020: 02010004 0000000f 0000000f 00004002 .............@.. 00000030: 00000fff 00000000 ........ Link: http://lkml.kernel.org/r/1573130738-29390-1-git-send-email-piotrx.maziarz@linux.intel.com Signed-off-by: Piotr Maziarz <piotrx.maziarz@linux.intel.com> Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/seq_buf.h')
-rw-r--r--include/linux/seq_buf.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h
index aa5deb041c25..fb0205d87d3c 100644
--- a/include/linux/seq_buf.h
+++ b/include/linux/seq_buf.h
@@ -125,6 +125,9 @@ extern int seq_buf_putmem(struct seq_buf *s, const void *mem, unsigned int len);
extern int seq_buf_putmem_hex(struct seq_buf *s, const void *mem,
unsigned int len);
extern int seq_buf_path(struct seq_buf *s, const struct path *path, const char *esc);
+extern int seq_buf_hex_dump(struct seq_buf *s, const char *prefix_str,
+ int prefix_type, int rowsize, int groupsize,
+ const void *buf, size_t len, bool ascii);
#ifdef CONFIG_BINARY_PRINTF
extern int