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Message-Id: <007f01c893da$ff676960$fe363c20$@jp.nec.com>
Date: Tue, 1 Apr 2008 18:30:17 +0900
From: "Satoshi UCHIDA" <s-uchida@...jp.nec.com>
To: <linux-kernel@...r.kernel.org>,
<containers@...ts.linux-foundation.org>, <axboe@...nel.dk>,
<menage@...gle.com>
Cc: <s-uchida@...jp.nec.com>, <tom-sugawara@...jp.nec.com>,
<m-takahashi@...jp.nec.com>
Subject: [RFC][patch 2/11][CFQ-cgroup] Move header file
This patch moves some data structure into header file
(include/linux/cfq-iosched.h).
Signed-off-by: Satoshi UCHIDA <uchida@...jp.nec.com>
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 0f962ec..c1f9da9 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -11,6 +11,7 @@
#include <linux/elevator.h>
#include <linux/rbtree.h>
#include <linux/ioprio.h>
+#include <linux/cfq-iosched.h>
/*
* tunables
@@ -58,65 +59,6 @@ static struct completion *ioc_gone;
#define sample_valid(samples) ((samples) > 80)
-/*
- * Most of our rbtree usage is for sorting with min extraction, so
- * if we cache the leftmost node we don't have to walk down the tree
- * to find it. Idea borrowed from Ingo Molnars CFS scheduler. We should
- * move this into the elevator for the rq sorting as well.
- */
-struct cfq_rb_root {
- struct rb_root rb;
- struct rb_node *left;
-};
-#define CFQ_RB_ROOT (struct cfq_rb_root) { RB_ROOT, NULL, }
-
-/*
- * Per block device queue structure
- */
-struct cfq_data {
- struct request_queue *queue;
-
- /*
- * rr list of queues with requests and the count of them
- */
- struct cfq_rb_root service_tree;
- unsigned int busy_queues;
-
- int rq_in_driver;
- int sync_flight;
- int hw_tag;
-
- /*
- * idle window management
- */
- struct timer_list idle_slice_timer;
- struct work_struct unplug_work;
-
- struct cfq_queue *active_queue;
- struct cfq_io_context *active_cic;
-
- /*
- * async queue for each priority case
- */
- struct cfq_queue *async_cfqq[2][IOPRIO_BE_NR];
- struct cfq_queue *async_idle_cfqq;
-
- sector_t last_position;
- unsigned long last_end_request;
-
- /*
- * tunables, see top of file
- */
- unsigned int cfq_quantum;
- unsigned int cfq_fifo_expire[2];
- unsigned int cfq_back_penalty;
- unsigned int cfq_back_max;
- unsigned int cfq_slice[2];
- unsigned int cfq_slice_async_rq;
- unsigned int cfq_slice_idle;
-
- struct list_head cic_list;
-};
/*
* Per process-grouping structure
diff --git a/include/linux/cfq-iosched.h b/include/linux/cfq-iosched.h
new file mode 100644
index 0000000..cce3993
--- /dev/null
+++ b/include/linux/cfq-iosched.h
@@ -0,0 +1,70 @@
+#ifndef _LINUX_CFQ_IOSCHED_H
+#define _LINUX_CFQ_IOSCHED_H
+
+#include <linux/rbtree.h>
+#include <linux/list.h>
+
+struct request_queue;
+struct cfq_io_context;
+
+/*
+ * Most of our rbtree usage is for sorting with min extraction, so
+ * if we cache the leftmost node we don't have to walk down the tree
+ * to find it. Idea borrowed from Ingo Molnars CFS scheduler. We should
+ * move this into the elevator for the rq sorting as well.
+ */
+struct cfq_rb_root {
+ struct rb_root rb;
+ struct rb_node *left;
+};
+#define CFQ_RB_ROOT (struct cfq_rb_root) { RB_ROOT, NULL, }
+
+/*
+ * Per block device queue structure
+ */
+struct cfq_data {
+ struct request_queue *queue;
+
+ /*
+ * rr list of queues with requests and the count of them
+ */
+ struct cfq_rb_root service_tree;
+ unsigned int busy_queues;
+
+ int rq_in_driver;
+ int sync_flight;
+ int hw_tag;
+
+ /*
+ * idle window management
+ */
+ struct timer_list idle_slice_timer;
+ struct work_struct unplug_work;
+
+ struct cfq_queue *active_queue;
+ struct cfq_io_context *active_cic;
+
+ /*
+ * async queue for each priority case
+ */
+ struct cfq_queue *async_cfqq[2][IOPRIO_BE_NR];
+ struct cfq_queue *async_idle_cfqq;
+
+ sector_t last_position;
+ unsigned long last_end_request;
+
+ /*
+ * tunables, see top of file
+ */
+ unsigned int cfq_quantum;
+ unsigned int cfq_fifo_expire[2];
+ unsigned int cfq_back_penalty;
+ unsigned int cfq_back_max;
+ unsigned int cfq_slice[2];
+ unsigned int cfq_slice_async_rq;
+ unsigned int cfq_slice_idle;
+
+ struct list_head cic_list;
+};
+
+#endif /* _LINUX_CFQ_IOSCHED_H */
--
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