printk/tracing: Add console output tracing

[linux-2.6-block.git] / kernel / printk.c

diff --git a/kernel/printk.c b/kernel/printk.c
index 13c0a1143f49438f7cc97718e61ecf5bc5b23747..cb8a6bd697c6224f521fd6f0f861ece18ad7f358 100644 (file)
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -44,6 +44,9 @@
 
 #include <asm/uaccess.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/printk.h>
+
 /*
  * Architectures can override it:
  */
@@ -542,6 +545,8 @@ MODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"
 static void _call_console_drivers(unsigned start,
                                unsigned end, int msg_log_level)
 {
+       trace_console(&LOG_BUF(0), start, end, log_buf_len);
+
        if ((msg_log_level < console_loglevel || ignore_loglevel) &&
                        console_drivers && start != end) {
                if ((start & LOG_BUF_MASK) > (end & LOG_BUF_MASK)) {