tracing/blktrace: move the tracing file to kernel/trace

Impact: cleanup

Move blktrace.c to kernel/trace, also move its config entry.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/block/Kconfig b/block/Kconfig
index 7cdaa1d..e7d1278 100644 (file)
--- 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 (file)
--- 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 25131a5..4fee43c 100644 (file)
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -302,6 +302,29 @@ 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 (file)
--- 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 (file)
--- 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;