Commit 1111e9bd authored by Cao Ruichuang's avatar Cao Ruichuang Committed by Steven Rostedt (Google)
Browse files

ring-buffer: Report header_page overwrite as char 

The header_page tracefs metadata currently reports overwrite as an
int field with size 1. That makes parsers warn about a type and
size mismatch even though the field is only used as a one-byte flag
within commit.

Keep the shared offset with commit as-is, but report overwrite as
char so the declared type matches the hardcoded size. The signedness
is already carried separately by the emitted signed field.

Link: https://patch.msgid.link/20260406165333.46052-1-create0818@163.com
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216999


Signed-off-by: default avatarCao Ruichuang <create0818@163.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 3515572d

kernel/trace/ring_buffer.c

+2 −2
Original line number Diff line number Diff line
@@ -597,11 +597,11 @@ int ring_buffer_print_page_header(struct trace_buffer *buffer, struct trace_seq 
			 (unsigned int)sizeof(field.commit),

			 (unsigned int)is_signed_type(long));



	trace_seq_printf(s, "\tfield: int overwrite;\t"

	trace_seq_printf(s, "\tfield: char overwrite;\t"

			 "offset:%u;\tsize:%u;\tsigned:%u;\n",

			 (unsigned int)offsetof(typeof(field), commit),

			 1,

			 (unsigned int)is_signed_type(long));

			 (unsigned int)is_signed_type(char));



	trace_seq_printf(s, "\tfield: char data;\t"

			 "offset:%u;\tsize:%u;\tsigned:%u;\n",