>From b03cc9f9a75da479d2b37b03fc4554553b8ee6b6 Mon Sep 17 00:00:00 2001
From: Alan D. Brunelle <alan.brunelle@xxxxxx>
Date: Fri, 23 May 2008 16:25:46 -0400
Subject: [PATCH] Added in handling of MESSAGE notes
Output stream would look like:
8,16 1 813055 20.259000000 4692 I R 3088320 + 8 [dd]
8,16 1 813056 20.259000000 4692 Q R 3088328 + 8 [dd]
8,16 1 20.259000000 0 m N elv switch: deadline
8,16 1 813057 20.259000000 4692 G R 3088328 + 8 [dd]
8,16 1 813058 20.259000000 4692 I R 3088328 + 8 [dd]
Needs some cleaning up (documentation).
Signed-off-by: Alan D. Brunelle <alan.brunelle@xxxxxx>
---
blkparse.c | 17 +++++++++++++++++
blktrace_api.h | 2 ++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/blkparse.c b/blkparse.c
index 517dde5..09a77f6 100644
--- a/blkparse.c
+++ b/blkparse.c
@@ -590,6 +590,23 @@ static void handle_notify(struct blk_io_trace *bit)
break;
+ case BLK_TN_MESSAGE:
+ if (bit->pdu_len > 0) {
+ char msg[bit->pdu_len+1];
+
+ memcpy(msg, (char *)payload, bit->pdu_len);
+ msg[bit->pdu_len] = '\0';
+
+ bit->time -= genesis_time;
+ fprintf(ofp,
+ "%3d,%-3d %2d %8s %5d.%09lu %5u %2s %3s %s\n",
+ MAJOR(bit->device), MINOR(bit->device),
+ bit->cpu, "", (int) SECONDS(bit->time),
+ (unsigned long) NANO_SECONDS(bit->time),
+ 0, "m", "N", msg);
+ }
+ break;
+
default:
/* Ignore unknown notify events */
;
diff --git a/blktrace_api.h b/blktrace_api.h
index 61b405a..67720de 100644
--- a/blktrace_api.h
+++ b/blktrace_api.h
@@ -54,6 +54,7 @@ enum {
enum blktrace_notify {
__BLK_TN_PROCESS = 0, /* establish pid/name mapping */
__BLK_TN_TIMESTAMP, /* include system clock */
+ __BLK_TN_MESSAGE, /* Character string message */
};
/*
@@ -77,6 +78,7 @@ enum blktrace_notify {
#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
+#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
#define BLK_IO_TRACE_MAGIC 0x65617400
#define BLK_IO_TRACE_VERSION 0x07
--
1.5.4.3
