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<title>litmus2008.git/drivers/block/paride, branch master</title>
<subtitle>[ARCHIVE] Old LITMUS^RT 2008 version (for reference).</subtitle>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/'/>
<entry>
<title>paride: pf driver fixes</title>
<updated>2007-11-15T02:45:39+00:00</updated>
<author>
<name>Ondrej Zary</name>
<email>linux@rainbow-software.org</email>
</author>
<published>2007-11-15T00:59:24+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=e62aa046e1748b8ea0354951685478030392cf56'/>
<id>e62aa046e1748b8ea0354951685478030392cf56</id>
<content type='text'>
The pf driver for parallel port floppy drives seems to be broken.  At least
with Imation SuperDisk with EPAT chip, the driver calls pi_connect() and
pi_disconnect after each transferred sector.  At least with EPAT, this
operation is very expensive - causes drive recalibration.  Thus, transferring
even a single byte (dd if=/dev/pf0 of=/dev/null bs=1 count=1) takes 20
seconds, making the driver useless.

The pf_next_buf() function seems to be broken as it returns 1 always (except
when pf_run is non-zero), causing the loop in do_pf_read_drq (and
do_pf_write_drq) to be executed only once.

The following patch fixes this problem.  It also fixes swapped descriptions in
pf_lock() function and removes DBMSG macro, which seems useless.

Signed-off-by: Ondrej Zary &lt;linux@rainbow-software.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
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<pre>
The pf driver for parallel port floppy drives seems to be broken.  At least
with Imation SuperDisk with EPAT chip, the driver calls pi_connect() and
pi_disconnect after each transferred sector.  At least with EPAT, this
operation is very expensive - causes drive recalibration.  Thus, transferring
even a single byte (dd if=/dev/pf0 of=/dev/null bs=1 count=1) takes 20
seconds, making the driver useless.

The pf_next_buf() function seems to be broken as it returns 1 always (except
when pf_run is non-zero), causing the loop in do_pf_read_drq (and
do_pf_write_drq) to be executed only once.

The following patch fixes this problem.  It also fixes swapped descriptions in
pf_lock() function and removes DBMSG macro, which seems useless.

Signed-off-by: Ondrej Zary &lt;linux@rainbow-software.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>paride: fix 'and' typo in drivers/block/paride/pt.c</title>
<updated>2007-11-05T23:12:32+00:00</updated>
<author>
<name>Roel Kluin</name>
<email>12o3l@tiscali.nl</email>
</author>
<published>2007-11-05T22:50:58+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=b07989f51eea16e2fe3eab032801599d952966fb'/>
<id>b07989f51eea16e2fe3eab032801599d952966fb</id>
<content type='text'>
Fix 'and' typo (PT_WRITE_OK is defined 2)

Signed-off-by: Roel Kluin &lt;12o3l@tiscali.nl&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
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<pre>
Fix 'and' typo (PT_WRITE_OK is defined 2)

Signed-off-by: Roel Kluin &lt;12o3l@tiscali.nl&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[BLOCK] Get rid of request_queue_t typedef</title>
<updated>2007-07-24T07:28:11+00:00</updated>
<author>
<name>Jens Axboe</name>
<email>jens.axboe@oracle.com</email>
</author>
<published>2007-07-24T07:28:11+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=165125e1e480f9510a5ffcfbfee4e3ee38c05f23'/>
<id>165125e1e480f9510a5ffcfbfee4e3ee38c05f23</id>
<content type='text'>
Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.

Signed-off-by: Jens Axboe &lt;jens.axboe@oracle.com&gt;
</content>
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<pre>
Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.

Signed-off-by: Jens Axboe &lt;jens.axboe@oracle.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>paride drivers: initialize spinlocks</title>
<updated>2007-04-24T15:23:08+00:00</updated>
<author>
<name>Alexey Dobriyan</name>
<email>adobriyan@sw.ru</email>
</author>
<published>2007-04-23T21:41:07+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=671d40f4aa20d31121695e33393c9bd87053f4fa'/>
<id>671d40f4aa20d31121695e33393c9bd87053f4fa</id>
<content type='text'>
pcd_lock and pf_spin_lock are passed to blk_init_queue() which, seeing them
as valid lock pointer, sets it as -&gt;queue_lock.

The problem is that pcd_lock and pf_spin_lock aren't initialized anywhere.

Signed-off-by: Alexey Dobriyan &lt;adobriyan@sw.ru&gt;
Cc: Jens Axboe &lt;jens.axboe@oracle.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
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<pre>
pcd_lock and pf_spin_lock are passed to blk_init_queue() which, seeing them
as valid lock pointer, sets it as -&gt;queue_lock.

The problem is that pcd_lock and pf_spin_lock aren't initialized anywhere.

Signed-off-by: Alexey Dobriyan &lt;adobriyan@sw.ru&gt;
Cc: Jens Axboe &lt;jens.axboe@oracle.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] paride endianness annotations</title>
<updated>2007-03-14T22:27:50+00:00</updated>
<author>
<name>Al Viro</name>
<email>viro@ftp.linux.org.uk</email>
</author>
<published>2007-03-14T09:20:30+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=27d871833e37ce4ef9a4d8a153598da1b429a490'/>
<id>27d871833e37ce4ef9a4d8a153598da1b429a490</id>
<content type='text'>
Signed-off-by: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
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<pre>
Signed-off-by: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] remove many unneeded #includes of sched.h</title>
<updated>2007-02-14T16:09:54+00:00</updated>
<author>
<name>Tim Schmielau</name>
<email>tim@physik3.uni-rostock.de</email>
</author>
<published>2007-02-14T08:33:14+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=cd354f1ae75e6466a7e31b727faede57a1f89ca5'/>
<id>cd354f1ae75e6466a7e31b727faede57a1f89ca5</id>
<content type='text'>
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau &lt;tim@physik3.uni-rostock.de&gt;
Acked-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
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<pre>
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau &lt;tim@physik3.uni-rostock.de&gt;
Acked-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] mark struct file_operations const 3</title>
<updated>2007-02-12T17:48:45+00:00</updated>
<author>
<name>Arjan van de Ven</name>
<email>arjan@linux.intel.com</email>
</author>
<published>2007-02-12T08:55:32+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=2b8693c0617e972fc0b2fd1ebf8de97e15b656c3'/>
<id>2b8693c0617e972fc0b2fd1ebf8de97e15b656c3</id>
<content type='text'>
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven &lt;arjan@linux.intel.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
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<pre>
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven &lt;arjan@linux.intel.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] Remove unused kernel config option PARIDE_PARPORT</title>
<updated>2007-02-11T19:18:06+00:00</updated>
<author>
<name>Robert P. J. Day</name>
<email>rpjday@mindspring.com</email>
</author>
<published>2007-02-10T09:46:28+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=482a579b370a0bf924b577efd6c750284a95e0fb'/>
<id>482a579b370a0bf924b577efd6c750284a95e0fb</id>
<content type='text'>
Remove the unused kernel config option PARIDE_PARPORT.

Signed-off-by: Robert P. J. Day &lt;rpjday@mindspring.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
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<pre>
Remove the unused kernel config option PARIDE_PARPORT.

Signed-off-by: Robert P. J. Day &lt;rpjday@mindspring.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] remove drivers/block/paride/jumbo</title>
<updated>2006-12-07T16:39:45+00:00</updated>
<author>
<name>Adrian Bunk</name>
<email>bunk@stusta.de</email>
</author>
<published>2006-12-07T04:40:31+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=4d2d3cec1da18123b301270381eb748e5ba4f638'/>
<id>4d2d3cec1da18123b301270381eb748e5ba4f638</id>
<content type='text'>
Let's remove this pre-historic paride building script.

Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
Acked-by: Alan Cox &lt;alan@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@osdl.org&gt;
</content>
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<pre>
Let's remove this pre-historic paride building script.

Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
Acked-by: Alan Cox &lt;alan@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@osdl.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] paride: remove parport #ifdef's</title>
<updated>2006-12-07T16:39:45+00:00</updated>
<author>
<name>Adrian Bunk</name>
<email>bunk@stusta.de</email>
</author>
<published>2006-12-07T04:40:29+00:00</published>
<link rel='alternate' type='text/html' href='http://rtsrv.cs.unc.edu/cgit/cgit.cgi/litmus2008.git/commit/?id=9828673d7d24a09fcc3931b3b84c539146979224'/>
<id>9828673d7d24a09fcc3931b3b84c539146979224</id>
<content type='text'>
CONFIG_PARIDE depends on CONFIG_PARPORT_PC, so there's no reason for
these #ifdef's.

Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
Acked-by: Alan Cox &lt;alan@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@osdl.org&gt;
</content>
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<pre>
CONFIG_PARIDE depends on CONFIG_PARPORT_PC, so there's no reason for
these #ifdef's.

Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
Acked-by: Alan Cox &lt;alan@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@osdl.org&gt;
</pre>
</div>
</content>
</entry>
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