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Subject[PATCH v4 30/34] tracing: trace_events_synth: Convert to printbuf
Date
This converts from seq_buf to printbuf

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
---
kernel/trace/trace_events_synth.c | 30 ++++++++++++++----------------
1 file changed, 14 insertions(+), 16 deletions(-)

diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_synth.c
index 5e8c07aef0..627e0e45f0 100644
--- a/kernel/trace/trace_events_synth.c
+++ b/kernel/trace/trace_events_synth.c
@@ -5,13 +5,14 @@
* Copyright (C) 2015, 2020 Tom Zanussi <tom.zanussi@linux.intel.com>
*/

-#include <linux/module.h>
#include <linux/kallsyms.h>
-#include <linux/security.h>
+#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/printbuf.h>
+#include <linux/rculist.h>
+#include <linux/security.h>
#include <linux/slab.h>
#include <linux/stacktrace.h>
-#include <linux/rculist.h>
#include <linux/tracefs.h>

/* for gfp flag names */
@@ -611,7 +612,7 @@ static struct synth_field *parse_synth_field(int argc, char **argv,
const char *prefix = NULL, *field_type = argv[0], *field_name, *array;
struct synth_field *field;
int len, ret = -ENOMEM;
- struct seq_buf s;
+ struct printbuf s;
ssize_t size;

if (!strcmp(field_type, "unsigned")) {
@@ -666,17 +667,15 @@ static struct synth_field *parse_synth_field(int argc, char **argv,
if (!field->type)
goto free;

- seq_buf_init(&s, field->type, len);
+ s = PRINTBUF_EXTERN(field->type, len);
if (prefix)
- seq_buf_puts(&s, prefix);
- seq_buf_puts(&s, field_type);
+ prt_str(&s, prefix);
+ prt_str(&s, field_type);
if (array)
- seq_buf_puts(&s, array);
- if (WARN_ON_ONCE(!seq_buf_buffer_left(&s)))
+ prt_str(&s, array);
+ if (WARN_ON_ONCE(!printbuf_remaining(&s)))
goto free;

- s.buffer[s.len] = '\0';
-
size = synth_field_size(field->type);
if (size < 0) {
if (array)
@@ -694,13 +693,12 @@ static struct synth_field *parse_synth_field(int argc, char **argv,
if (!type)
goto free;

- seq_buf_init(&s, type, len);
- seq_buf_puts(&s, "__data_loc ");
- seq_buf_puts(&s, field->type);
+ s = PRINTBUF_EXTERN(type, len);
+ prt_str(&s, "__data_loc ");
+ prt_str(&s, field->type);

- if (WARN_ON_ONCE(!seq_buf_buffer_left(&s)))
+ if (WARN_ON_ONCE(!printbuf_remaining(&s)))
goto free;
- s.buffer[s.len] = '\0';

kfree(field->type);
field->type = type;
--
2.36.1
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