linux.git/block/blktrace.c, branch v2.6.20

[PATCH] Allow NULL pointers in percpu_free

2006-12-07T16:39:22+00:00

The patch (as824b) makes percpu_free() ignore NULL arguments, as one would
expect for a deallocation routine.  (Note that free_percpu is #defined as
percpu_free in include/linux/percpu.h.) A few callers are updated to remove
now-unneeded tests for NULL.  A few other callers already seem to assume
that passing a NULL pointer to percpu_free() is okay!

The patch also removes an unnecessary NULL check in percpu_depopulate().

Signed-off-by: Alan Stern 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] blktrace: don't return blktrace_seq from trace_note()

2006-12-04T08:30:58+00:00

Only the process notifier needs it, and it can set it manually.

Signed-off-by: Jens Axboe

[PATCH] blktrace: uninline trace_note()

2006-12-04T08:27:41+00:00

It's too large to inline. Additionally clean it up, by fast pathing
the likely path.

Signed-off-by: Jens Axboe

[PATCH] blktrace: add timestamp message

2006-12-01T09:39:12+00:00

This adds a new timestamp message to blktrace, giving the timeofday when
we starting tracing. This helps user space correlate block trace events
with eg an application strace.

This requires a (compatible) update to blkparse. The changed blkparse
is still able to process traces generated by older kernels, and older
versions of blkparse should silently ignore the new records (because
they have a pid of 0).

Signed-off-by: Olaf Kirch 
Signed-off-by: Jens Axboe

[PATCH] Update axboe@suse.de email address

2006-09-30T18:52:34+00:00

As people often look for the copyright in files to see who to mail,
update the link to a neutral one.

Signed-off-by: Jens Axboe

[PATCH] blktrace: cleanup using on_each_cpu

2006-09-30T18:31:19+00:00

This patch kills a few lines of code in blktrace by making use of
on_each_cpu().

Signed-off-by: Martin Peschke 
Signed-off-by: Jens Axboe

[PATCH] blktrace: support for logging metadata reads

2006-09-30T18:29:43+00:00

Signed-off-by: Jens Axboe

[PATCH] ifdef blktrace debugging fields

2006-09-29T16:18:09+00:00

Signed-off-by: Alexey Dobriyan 
Acked-by: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private

2006-09-27T15:26:17+00:00

The following patches reduce the size of the VFS inode structure by 28 bytes
on a UP x86.  (It would be more on an x86_64 system).  This is a 10% reduction
in the inode size on a UP kernel that is configured in a production mode
(i.e., with no spinlock or other debugging functions enabled; if you want to
save memory taken up by in-core inodes, the first thing you should do is
disable the debugging options; they are responsible for a huge amount of bloat
in the VFS inode structure).

This patch:

The filesystem or device-specific pointer in the inode is inside a union,
which is pretty pointless given that all 30+ users of this field have been
using the void pointer.  Get rid of the union and rename it to i_private, with
a comment to explain who is allowed to use the void pointer.  This is just a
cleanup, but it allows us to reuse the union 'u' for something something where
the union will actually be used.

[judith@osdl.org: powerpc build fix]
Signed-off-by: "Theodore Ts'o" 
Signed-off-by: Judith Lebzelter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] blktrace: fix read-ahead bit

2006-07-25T13:04:13+00:00

It should be toggling the same bit on and off, fix it up.

Signed-off-by: Jens Axboe