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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-28 19:31:13 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-28 19:31:13 -0700
commit8e8ef2971b0fd6dcf1a66014fb74b41938eecb4e (patch)
tree3c451f9c21123046806724680a3a8aebd48e6247
parent933a6208d84c92d92f9264a2e28d0fc317d41fd1 (diff)
parent79685b8deea4541d18882d8c07d0e99e788292ab (diff)
downloadop-kernel-dev-8e8ef2971b0fd6dcf1a66014fb74b41938eecb4e.zip
op-kernel-dev-8e8ef2971b0fd6dcf1a66014fb74b41938eecb4e.tar.gz
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: docbook: add pipes, other fixes blktrace: use cpu_clock() instead of sched_clock() bsg: Fix build for CONFIG_BLOCK=n [patch] QUEUE_FLAG_READFULL QUEUE_FLAG_WRITEFULL comment fix
-rw-r--r--Documentation/DocBook/kernel-api.tmpl13
-rw-r--r--block/Kconfig4
-rw-r--r--block/blktrace.c20
-rw-r--r--fs/pipe.c2
-rw-r--r--fs/splice.c4
-rw-r--r--include/linux/blkdev.h4
6 files changed, 28 insertions, 19 deletions
diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index eb42bf9..ec7c498 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -704,14 +704,23 @@ X!Idrivers/video/console/fonts.c
<chapter id="splice">
<title>splice API</title>
- <para>)
+ <para>
splice is a method for moving blocks of data around inside the
- kernel, without continually transferring it between the kernel
+ kernel, without continually transferring them between the kernel
and user space.
</para>
!Iinclude/linux/splice.h
!Ffs/splice.c
</chapter>
+ <chapter id="pipes">
+ <title>pipes API</title>
+ <para>
+ Pipe interfaces are all for in-kernel (builtin image) use.
+ They are not exported for use by modules.
+ </para>
+!Iinclude/linux/pipe_fs_i.h
+!Ffs/pipe.c
+ </chapter>
</book>
diff --git a/block/Kconfig b/block/Kconfig
index ca2ef4e..2484e0e 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,8 +49,6 @@ config LSF
If unsure, say Y.
-endif # BLOCK
-
config BLK_DEV_BSG
bool "Block layer SG support v4 (EXPERIMENTAL)"
depends on EXPERIMENTAL
@@ -64,4 +62,6 @@ config BLK_DEV_BSG
protocols (e.g. Task Management Functions and SMP in Serial
Attached SCSI).
+endif # BLOCK
+
source block/Kconfig.iosched
diff --git a/block/blktrace.c b/block/blktrace.c
index 20c3e22..20fa034 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -41,7 +41,7 @@ static void trace_note(struct blk_trace *bt, pid_t pid, int action,
const int cpu = smp_processor_id();
t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
- t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+ t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
t->device = bt->dev;
t->action = action;
t->pid = pid;
@@ -159,7 +159,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
t->sequence = ++(*sequence);
- t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+ t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
t->sector = sector;
t->bytes = bytes;
t->action = what;
@@ -488,17 +488,17 @@ void blk_trace_shutdown(struct request_queue *q)
}
/*
- * Average offset over two calls to sched_clock() with a gettimeofday()
+ * Average offset over two calls to cpu_clock() with a gettimeofday()
* in the middle
*/
-static void blk_check_time(unsigned long long *t)
+static void blk_check_time(unsigned long long *t, int this_cpu)
{
unsigned long long a, b;
struct timeval tv;
- a = sched_clock();
+ a = cpu_clock(this_cpu);
do_gettimeofday(&tv);
- b = sched_clock();
+ b = cpu_clock(this_cpu);
*t = tv.tv_sec * 1000000000 + tv.tv_usec * 1000;
*t -= (a + b) / 2;
@@ -510,16 +510,16 @@ static void blk_check_time(unsigned long long *t)
static void blk_trace_check_cpu_time(void *data)
{
unsigned long long *t;
- int cpu = get_cpu();
+ int this_cpu = get_cpu();
- t = &per_cpu(blk_trace_cpu_offset, cpu);
+ t = &per_cpu(blk_trace_cpu_offset, this_cpu);
/*
* Just call it twice, hopefully the second call will be cache hot
* and a little more precise
*/
- blk_check_time(t);
- blk_check_time(t);
+ blk_check_time(t, this_cpu);
+ blk_check_time(t, this_cpu);
put_cpu();
}
diff --git a/fs/pipe.c b/fs/pipe.c
index d007830..6b3d91a 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -255,7 +255,7 @@ void generic_pipe_buf_get(struct pipe_inode_info *pipe, struct pipe_buffer *buf)
/**
* generic_pipe_buf_confirm - verify contents of the pipe buffer
- * @pipe: the pipe that the buffer belongs to
+ * @info: the pipe that the buffer belongs to
* @buf: the buffer to confirm
*
* Description:
diff --git a/fs/splice.c b/fs/splice.c
index 0a09732..c010a72 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -164,7 +164,7 @@ static const struct pipe_buf_operations user_page_pipe_buf_ops = {
* @spd: data to fill
*
* Description:
- * @spd contains a map of pages and len/offset tupples, a long with
+ * @spd contains a map of pages and len/offset tuples, along with
* the struct pipe_buf_operations associated with these pages. This
* function will link that data to the pipe.
*
@@ -1000,7 +1000,7 @@ static long do_splice_to(struct file *in, loff_t *ppos,
* Description:
* This is a special case helper to splice directly between two
* points, without requiring an explicit pipe. Internally an allocated
- * pipe is cached in the process, and reused during the life time of
+ * pipe is cached in the process, and reused during the lifetime of
* that process.
*
*/
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index a1c96d9..b126c6f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -483,8 +483,8 @@ struct request_queue
#define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */
#define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */
#define QUEUE_FLAG_STOPPED 2 /* queue is stopped */
-#define QUEUE_FLAG_READFULL 3 /* write queue has been filled */
-#define QUEUE_FLAG_WRITEFULL 4 /* read queue has been filled */
+#define QUEUE_FLAG_READFULL 3 /* read queue has been filled */
+#define QUEUE_FLAG_WRITEFULL 4 /* write queue has been filled */
#define QUEUE_FLAG_DEAD 5 /* queue being torn down */
#define QUEUE_FLAG_REENTER 6 /* Re-entrancy avoidance */
#define QUEUE_FLAG_PLUGGED 7 /* queue is plugged */
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