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authorKent Overstreet <kent.overstreet@gmail.com>2022-05-20 14:26:53 -0400
committerKent Overstreet <kent.overstreet@gmail.com>2022-08-07 21:08:02 -0400
commit39a0d5c32b0ee85af1ecefedaec659e6184ea56a (patch)
tree21658f1f995009b5898741e6e62b9ae48dbfb19d /kernel/trace/trace_functions_graph.c
parent4c144633669377b56b772fb39f0e0f412b02b906 (diff)
tracing: Convert to printbuf
This converts the seq_bufs in dynevent_cmd and trace_seq to printbufs. - read_pos in seq_buf doesn't exist in printbuf, so is added to trace_seq - seq_buf_to_user doesn't have a printbuf equivalent, so is inlined into trace_seq_to_user - seq_buf_putmem_hex currently swabs bytes on little endian, hardcoded to 8 byte units. This patch switches it to prt_hex_bytes(), which does _not_ swab. Otherwise this is largely a direct conversion, with a few slight refactorings and cleanups. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com>
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
-rw-r--r--kernel/trace/trace_functions_graph.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 203204cadf92..9f270fdde99b 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -1022,9 +1022,9 @@ print_graph_comment(struct trace_seq *s, struct trace_entry *ent,
goto out;
/* Strip ending newline */
- if (s->buffer[s->seq.len - 1] == '\n') {
- s->buffer[s->seq.len - 1] = '\0';
- s->seq.len--;
+ if (s->buffer[s->seq.pos - 1] == '\n') {
+ s->buffer[s->seq.pos - 1] = '\0';
+ s->seq.pos--;
}
trace_seq_puts(s, " */\n");