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authorPiotr Maziarz <piotrx.maziarz@linux.intel.com>2019-11-07 13:45:38 +0100
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2019-11-14 13:15:12 -0500
commitef56e047b2bd4dabb801fd073dfcab5f40de5f78 (patch)
treed69ed71105f51439cc4bb84b997bd6410ad8ded7 /kernel/trace/trace_output.c
parent353cade3149c27b53260932ee3ff1ebde405976d (diff)
tracing: Use seq_buf_hex_dump() to dump buffers
Without this, buffers can be printed with __print_array macro that has no formatting options and can be hard to read. The other way is to mimic formatting capability with multiple calls of trace event with one call per row which gives performance impact and different timestamp in each row. Link: http://lkml.kernel.org/r/1573130738-29390-2-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 'kernel/trace/trace_output.c')
-rw-r--r--kernel/trace/trace_output.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index d54ce252b05a..d9b4b7c22db4 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -274,6 +274,21 @@ trace_print_array_seq(struct trace_seq *p, const void *buf, int count,
}
EXPORT_SYMBOL(trace_print_array_seq);
+const char *
+trace_print_hex_dump_seq(struct trace_seq *p, const char *prefix_str,
+ int prefix_type, int rowsize, int groupsize,
+ const void *buf, size_t len, bool ascii)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_putc(p, '\n');
+ trace_seq_hex_dump(p, prefix_str, prefix_type,
+ rowsize, groupsize, buf, len, ascii);
+ trace_seq_putc(p, 0);
+ return ret;
+}
+EXPORT_SYMBOL(trace_print_hex_dump_seq);
+
int trace_raw_output_prep(struct trace_iterator *iter,
struct trace_event *trace_event)
{