diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-10-29 14:17:52 -0400 |
|---|---|---|
| committer | Daniel Thompson <daniel.thompson@linaro.org> | 2017-01-23 19:15:35 +0000 |
| commit | 2ac2e31d27e55789cb940d4a26a3d331c0ad7b45 (patch) | |
| tree | 7fe5730969631ae44728b7db54c01dde81ddc7f0 | |
| parent | 54101c3d50a6e117b7c4731f1bda945a2eeb719a (diff) | |
UPSTREAM: tracing: Add a seq_buf_clear() helper and clear len and readpos in init
Add a helper function seq_buf_clear() that resets the len and readpos
fields of a seq_buf. Currently it is only used in the seq_buf_init()
but will be used later when updating the seq_file code.
Link: http://lkml.kernel.org/r/20141104160222.352309995@goodmis.org
Tested-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Patchset: trace-seq/seq-buf/x86/printk: Print all stacks from NMI safely
(cherry picked from commit 0736c033a81547b1cdc5120fc8dd60e26a00fd28)
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
| -rw-r--r-- | include/linux/seq_buf.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/seq_buf.h b/include/linux/seq_buf.h index d14dc9023dde..5d91262433e2 100644 --- a/include/linux/seq_buf.h +++ b/include/linux/seq_buf.h @@ -22,13 +22,18 @@ struct seq_buf { loff_t readpos; }; +static inline void seq_buf_clear(struct seq_buf *s) +{ + s->len = 0; + s->readpos = 0; +} + static inline void seq_buf_init(struct seq_buf *s, unsigned char *buf, unsigned int size) { s->buffer = buf; s->size = size; - s->len = 0; - s->readpos = 0; + seq_buf_clear(s); } /* |