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Message-ID: <498e1747.1f145e0a.126a.ffffdf3b@mx.google.com>
Date: Sat, 7 Feb 2009 20:46:45 +0100
From: Frederic Weisbecker <fweisbec@...il.com>
To: Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/5] tracing/blktrace: move the tracing file to kernel/trace
Impact: cleanup
Move blktrace.c to kernel/trace, also move its config entry.
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
block/Kconfig | 24 ------------------------
block/Makefile | 1 -
kernel/trace/Kconfig | 23 +++++++++++++++++++++++
kernel/trace/Makefile | 1 +
{block => kernel/trace}/blktrace.c | 2 +-
5 files changed, 25 insertions(+), 26 deletions(-)
rename {block => kernel/trace}/blktrace.c (99%)
diff --git a/block/Kconfig b/block/Kconfig
index 7cdaa1d..e7d1278 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -44,30 +44,6 @@ config LBD
If unsure, say N.
-config BLK_DEV_IO_TRACE
- bool "Support for tracing block io actions"
- depends on SYSFS
- select RELAY
- select DEBUG_FS
- select TRACEPOINTS
- select TRACING
- select STACKTRACE
- help
- Say Y here if you want to be able to trace the block layer actions
- on a given queue. Tracing allows you to see any traffic happening
- on a block device queue. For more information (and the userspace
- support tools needed), fetch the blktrace tools from:
-
- git://git.kernel.dk/blktrace.git
-
- Tracing also is possible using the ftrace interface, e.g.:
-
- echo 1 > /sys/block/sda/sda1/trace/enable
- echo blk > /sys/kernel/debug/tracing/current_tracer
- cat /sys/kernel/debug/tracing/trace_pipe
-
- If unsure, say N.
-
config BLK_DEV_BSG
bool "Block layer SG support v4 (EXPERIMENTAL)"
depends on EXPERIMENTAL
diff --git a/block/Makefile b/block/Makefile
index bfe7304..e9fa4dd 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -13,6 +13,5 @@ obj-$(CONFIG_IOSCHED_AS) += as-iosched.o
obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o
obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o
-obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 28f2644..0e920e2 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -294,6 +294,29 @@ config WORKQUEUE_TRACER
For example it can help a developer to decide whether he should
choose a per cpu workqueue instead of a singlethreaded one.
+config BLK_DEV_IO_TRACE
+ bool "Support for tracing block io actions"
+ depends on SYSFS
+ select RELAY
+ select DEBUG_FS
+ select TRACEPOINTS
+ select TRACING
+ select STACKTRACE
+ help
+ Say Y here if you want to be able to trace the block layer actions
+ on a given queue. Tracing allows you to see any traffic happening
+ on a block device queue. For more information (and the userspace
+ support tools needed), fetch the blktrace tools from:
+
+ git://git.kernel.dk/blktrace.git
+
+ Tracing also is possible using the ftrace interface, e.g.:
+
+ echo 1 > /sys/block/sda/sda1/trace/enable
+ echo blk > /sys/kernel/debug/tracing/current_tracer
+ cat /sys/kernel/debug/tracing/trace_pipe
+
+ If unsure, say N.
config DYNAMIC_FTRACE
bool "enable/disable ftrace tracepoints dynamically"
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index f76d48f..627090b 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -37,5 +37,6 @@ obj-$(CONFIG_HW_BRANCH_TRACER) += trace_hw_branches.o
obj-$(CONFIG_POWER_TRACER) += trace_power.o
obj-$(CONFIG_KMEMTRACE) += kmemtrace.o
obj-$(CONFIG_WORKQUEUE_TRACER) += trace_workqueue.o
+obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
libftrace-y := ftrace.o
diff --git a/block/blktrace.c b/kernel/trace/blktrace.c
similarity index 99%
rename from block/blktrace.c
rename to kernel/trace/blktrace.c
index ca6d320..3b91da0 100644
--- a/block/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -25,7 +25,7 @@
#include <linux/time.h>
#include <trace/block.h>
#include <linux/uaccess.h>
-#include <../kernel/trace/trace_output.h>
+#include "trace_output.h"
static unsigned int blktrace_seq __read_mostly = 1;
--
1.6.1
--
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