<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git, branch v2.6.17.12</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>Linux 2.6.17.12</title>
<updated>2006-09-08T21:58:33+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@suse.de</email>
</author>
<published>2006-09-08T21:58:33+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=9e1c66a905bb1712c9ecb9659339b99a11c01ee6'/>
<id>9e1c66a905bb1712c9ecb9659339b99a11c01ee6</id>
<content type='text'>
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: version 1.6.1</title>
<updated>2006-09-08T21:51:40+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:58+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=b3c725e4a9a403d86770d43d57eb0f016f055fac'/>
<id>b3c725e4a9a403d86770d43d57eb0f016f055fac</id>
<content type='text'>
Since this code incorporates some of the fixes from 2.6.18, change
the version number.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Since this code incorporates some of the fixes from 2.6.18, change
the version number.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: fix fiber support</title>
<updated>2006-09-08T21:51:40+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=983e6379274534e80c1bcf9ba8ed7ddb50e4eb17'/>
<id>983e6379274534e80c1bcf9ba8ed7ddb50e4eb17</id>
<content type='text'>
Fix support for fiber based devices.  Needed to keep track of PMD type to
add workaround in setup. Add support for gigabit half duplex fiber.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix support for fiber based devices.  Needed to keep track of PMD type to
add workaround in setup. Add support for gigabit half duplex fiber.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: MSI test timing</title>
<updated>2006-09-08T21:51:40+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=3489a9e868343cb4c49a8bea541c324ae50366bc'/>
<id>3489a9e868343cb4c49a8bea541c324ae50366bc</id>
<content type='text'>
The test for MSI IRQ could have timing issues. The PCI write needs to be 
pushed out before waiting, and the wait queue should be initialized before
the IRQ.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The test for MSI IRQ could have timing issues. The PCI write needs to be 
pushed out before waiting, and the wait queue should be initialized before
the IRQ.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: use dev_alloc_skb for receive buffers</title>
<updated>2006-09-08T21:51:40+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f117ca328f2de3ca2db90d5775031152fe0c2496'/>
<id>f117ca328f2de3ca2db90d5775031152fe0c2496</id>
<content type='text'>
Several code paths assume an additional 16 bytes of header padding
on the receive path. Use dev_alloc_skb to get that padding.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Several code paths assume an additional 16 bytes of header padding
on the receive path. Use dev_alloc_skb to get that padding.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: clear status IRQ after empty</title>
<updated>2006-09-08T21:51:40+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:54+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=15d658cb2010ec52e74920cfa64ef0427191ec3e'/>
<id>15d658cb2010ec52e74920cfa64ef0427191ec3e</id>
<content type='text'>
Don't clear status IRQ until list has been read to avoid causing
status list wraparound. Clearing IRQ forces a Transmit Status update
if it is pending.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Don't clear status IRQ until list has been read to avoid causing
status list wraparound. Clearing IRQ forces a Transmit Status update
if it is pending.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>sky2: accept flow control</title>
<updated>2006-09-08T21:51:39+00:00</updated>
<author>
<name>Stephen Hemminger</name>
<email>shemminger@osdl.org</email>
</author>
<published>2006-09-06T17:17:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=669763679043a814febae9ac1501bd2c9f848559'/>
<id>669763679043a814febae9ac1501bd2c9f848559</id>
<content type='text'>
Don't program the GMAC to reject flow control packets.
This maybe the cause of some of the transmit hangs.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Don't program the GMAC to reject flow control packets.
This maybe the cause of some of the transmit hangs.

Signed-off-by: Stephen Hemminger &lt;shemminger@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>dm: Fix deadlock under high i/o load in raid1 setup.</title>
<updated>2006-09-08T21:51:39+00:00</updated>
<author>
<name>Daniel Kobras</name>
<email>kobras@linux.de</email>
</author>
<published>2006-08-27T08:23:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e2b53b19856422ad050fadb5f30424c53698eb36'/>
<id>e2b53b19856422ad050fadb5f30424c53698eb36</id>
<content type='text'>
On an nForce4-equipped machine with two SATA disk in raid1 setup using dmraid,
we experienced frequent deadlock of the system under high i/o load.  'cat
/dev/zero &gt; ~/zero' was the most reliable way to reproduce them: Randomly
after a few GB, 'cp' would be left in 'D' state along with kjournald and
kmirrord.  The functions cp and kjournald were blocked in did vary, but
kmirrord's wchan always pointed to 'mempool_alloc()'.  We've seen this pattern
on 2.6.15 and 2.6.17 kernels.  http://lkml.org/lkml/2005/4/20/142 indicates
that this problem has been around even before.

So much for the facts, here's my interpretation: mempool_alloc() first tries
to atomically allocate the requested memory, or falls back to hand out
preallocated chunks from the mempool.  If both fail, it puts the calling
process (kmirrord in this case) on a private waitqueue until somebody refills
the pool.  Where the only 'somebody' is kmirrord itself, so we have a
deadlock.

I worked around this problem by falling back to a (blocking) kmalloc when
before kmirrord would have ended up on the waitqueue.  This defeats part of
the benefits of using the mempool, but at least keeps the system running.  And
it could be done with a two-line change.  Note that mempool_alloc() clears the
GFP_NOIO flag internally, and only uses it to decide whether to wait or return
an error if immediate allocation fails, so the attached patch doesn't change
behaviour in the non-deadlocking case.  Path is against current git
(2.6.18-rc4), but should apply to earlier versions as well.  I've tested on
2.6.15, where this patch makes the difference between random lockup and a
stable system.

Signed-off-by: Daniel Kobras &lt;kobras@linux.de&gt;
Acked-by: Alasdair G Kergon &lt;agk@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
On an nForce4-equipped machine with two SATA disk in raid1 setup using dmraid,
we experienced frequent deadlock of the system under high i/o load.  'cat
/dev/zero &gt; ~/zero' was the most reliable way to reproduce them: Randomly
after a few GB, 'cp' would be left in 'D' state along with kjournald and
kmirrord.  The functions cp and kjournald were blocked in did vary, but
kmirrord's wchan always pointed to 'mempool_alloc()'.  We've seen this pattern
on 2.6.15 and 2.6.17 kernels.  http://lkml.org/lkml/2005/4/20/142 indicates
that this problem has been around even before.

So much for the facts, here's my interpretation: mempool_alloc() first tries
to atomically allocate the requested memory, or falls back to hand out
preallocated chunks from the mempool.  If both fail, it puts the calling
process (kmirrord in this case) on a private waitqueue until somebody refills
the pool.  Where the only 'somebody' is kmirrord itself, so we have a
deadlock.

I worked around this problem by falling back to a (blocking) kmalloc when
before kmirrord would have ended up on the waitqueue.  This defeats part of
the benefits of using the mempool, but at least keeps the system running.  And
it could be done with a two-line change.  Note that mempool_alloc() clears the
GFP_NOIO flag internally, and only uses it to decide whether to wait or return
an error if immediate allocation fails, so the attached patch doesn't change
behaviour in the non-deadlocking case.  Path is against current git
(2.6.18-rc4), but should apply to earlier versions as well.  I've tested on
2.6.15, where this patch makes the difference between random lockup and a
stable system.

Signed-off-by: Daniel Kobras &lt;kobras@linux.de&gt;
Acked-by: Alasdair G Kergon &lt;agk@redhat.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>Remove redundant up() in stop_machine()</title>
<updated>2006-09-08T21:51:39+00:00</updated>
<author>
<name>Yingchao Zhou</name>
<email>yingchao.zhou@gmail.com</email>
</author>
<published>2006-08-27T08:23:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=eeae03f8f7842d4a981e54b5a2a76b5dbacee82e'/>
<id>eeae03f8f7842d4a981e54b5a2a76b5dbacee82e</id>
<content type='text'>
An up() is called in kernel/stop_machine.c on failure, and also in the
caller (unconditionally).

Signed-off-by: Zhou Yingchao &lt;yingchao.zhou@gmail.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
An up() is called in kernel/stop_machine.c on failure, and also in the
caller (unconditionally).

Signed-off-by: Zhou Yingchao &lt;yingchao.zhou@gmail.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>Missing PCI id update for VIA IDE</title>
<updated>2006-09-08T21:51:39+00:00</updated>
<author>
<name>Alan Cox</name>
<email>alan@lxorguk.ukuu.org.uk</email>
</author>
<published>2006-08-30T18:35:49+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=1a9546a59f5792d2baeedb6b290a9449e3c43f9e'/>
<id>1a9546a59f5792d2baeedb6b290a9449e3c43f9e</id>
<content type='text'>
The following change from -mm is important to 2.6.18 (actually to 2.6.17
but its too late for that). This was contributed over three months ago
by VIA to Bartlomiej and nothing happened. As a result the new chipset
is now out and Linux won't run on it. By the time 2.6.18 is finalised
this will be the defacto standard VIA chipset so support would be a good
plan.

Tested in -mm for a while, its essentially a PCI ident update but for
the bridge chip because VIA do things in weird ways.


Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;


</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The following change from -mm is important to 2.6.18 (actually to 2.6.17
but its too late for that). This was contributed over three months ago
by VIA to Bartlomiej and nothing happened. As a result the new chipset
is now out and Linux won't run on it. By the time 2.6.18 is finalised
this will be the defacto standard VIA chipset so support would be a good
plan.

Tested in -mm for a while, its essentially a PCI ident update but for
the bridge chip because VIA do things in weird ways.


Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;


</pre>
</div>
</content>
</entry>
</feed>
