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| author | zhangwei(Jovi) <jovi.zhangwei@huawei.com> | 2013-04-30 03:17:16 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 05:28:13 +0400 |
| commit | 07c65f4d1aa74f7cf1c46d7f96e05cfa3e628ba1 (patch) | |
| tree | 9f8dc41a23bae07daf3d1fdd4b95da3787e37dae /include/trace/events | |
| parent | 2fb0815c9ee6b9ac50e15dd8360ec76d9fa46a22 (diff) | |
| download | linux-07c65f4d1aa74f7cf1c46d7f96e05cfa3e628ba1.tar.xz | |
printk/tracing: rework console tracing
Commit 7ff9554bb578 ("printk: convert byte-buffer to variable-length
record buffer") removed start and end parameters from
call_console_drivers, but those parameters still exist in
include/trace/events/printk.h.
Without start and end parameters handling, printk tracing became more
simple as: trace_console(text, len);
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/trace/events')
| -rw-r--r-- | include/trace/events/printk.h | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/include/trace/events/printk.h b/include/trace/events/printk.h index 94ec79cc011a..c008bc99f9fa 100644 --- a/include/trace/events/printk.h +++ b/include/trace/events/printk.h @@ -6,31 +6,18 @@ #include <linux/tracepoint.h> -TRACE_EVENT_CONDITION(console, - TP_PROTO(const char *log_buf, unsigned start, unsigned end, - unsigned log_buf_len), +TRACE_EVENT(console, + TP_PROTO(const char *text, size_t len), - TP_ARGS(log_buf, start, end, log_buf_len), - - TP_CONDITION(start != end), + TP_ARGS(text, len), TP_STRUCT__entry( - __dynamic_array(char, msg, end - start + 1) + __dynamic_array(char, msg, len + 1) ), TP_fast_assign( - if ((start & (log_buf_len - 1)) > (end & (log_buf_len - 1))) { - memcpy(__get_dynamic_array(msg), - log_buf + (start & (log_buf_len - 1)), - log_buf_len - (start & (log_buf_len - 1))); - memcpy((char *)__get_dynamic_array(msg) + - log_buf_len - (start & (log_buf_len - 1)), - log_buf, end & (log_buf_len - 1)); - } else - memcpy(__get_dynamic_array(msg), - log_buf + (start & (log_buf_len - 1)), - end - start); - ((char *)__get_dynamic_array(msg))[end - start] = 0; + memcpy(__get_dynamic_array(msg), text, len); + ((char *)__get_dynamic_array(msg))[len] = 0; ), TP_printk("%s", __get_str(msg)) |