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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-06-25 23:54:42 +0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-11-20 06:01:09 +0300 |
| commit | 3a161d99c43ce74c76aecff309be4c3ba455e823 (patch) | |
| tree | cc3aa5d746203cd17e8d9b92c78bef04f6f0ccdb /include/linux/trace_seq.h | |
| parent | 16a8ef2751801346f1f76a18685b2beb63cd170f (diff) | |
| download | linux-3a161d99c43ce74c76aecff309be4c3ba455e823.tar.xz | |
tracing: Create seq_buf layer in trace_seq
Create a seq_buf layer that trace_seq sits on. The seq_buf will not
be limited to page size. This will allow other usages of seq_buf
instead of a hard set PAGE_SIZE one that trace_seq has.
Link: http://lkml.kernel.org/r/20141104160221.864997179@goodmis.org
Link: http://lkml.kernel.org/r/20141114011412.170377300@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>
Diffstat (limited to 'include/linux/trace_seq.h')
| -rw-r--r-- | include/linux/trace_seq.h | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h index db8a73224f1a..85d37106be3d 100644 --- a/include/linux/trace_seq.h +++ b/include/linux/trace_seq.h @@ -1,7 +1,7 @@ #ifndef _LINUX_TRACE_SEQ_H #define _LINUX_TRACE_SEQ_H -#include <linux/fs.h> +#include <linux/seq_buf.h> #include <asm/page.h> @@ -12,16 +12,14 @@ struct trace_seq { unsigned char buffer[PAGE_SIZE]; - unsigned int len; - unsigned int readpos; + struct seq_buf seq; int full; }; static inline void trace_seq_init(struct trace_seq *s) { - s->len = 0; - s->readpos = 0; + seq_buf_init(&s->seq, s->buffer, PAGE_SIZE); s->full = 0; } @@ -37,7 +35,7 @@ trace_seq_init(struct trace_seq *s) static inline unsigned char * trace_seq_buffer_ptr(struct trace_seq *s) { - return s->buffer + s->len; + return s->buffer + s->seq.len; } /** @@ -49,7 +47,7 @@ trace_seq_buffer_ptr(struct trace_seq *s) */ static inline bool trace_seq_has_overflowed(struct trace_seq *s) { - return s->full || s->len > PAGE_SIZE - 1; + return s->full || seq_buf_has_overflowed(&s->seq); } /* |