<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/arch/arm/kernel/process.c, branch v2.6.24.2</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>Use helpers to obtain task pid in printks (arch code)</title>
<updated>2007-10-19T18:53:43+00:00</updated>
<author>
<name>Alexey Dobriyan</name>
<email>adobriyan@openvz.org</email>
</author>
<published>2007-10-19T06:40:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=19c5870c0eefd27c6d09d867465e0571262e05d0'/>
<id>19c5870c0eefd27c6d09d867465e0571262e05d0</id>
<content type='text'>
One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan &lt;adobriyan@openvz.org&gt;
Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Cc: &lt;linux-arch@vger.kernel.org&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>
One of the easiest things to isolate is the pid printed in kernel log.
There was a patch, that made this for arch-independent code, this one makes
so for arch/xxx files.

It took some time to cross-compile it, but hopefully these are all the
printks in arch code.

Signed-off-by: Alexey Dobriyan &lt;adobriyan@openvz.org&gt;
Signed-off-by: Pavel Emelyanov &lt;xemul@openvz.org&gt;
Cc: &lt;linux-arch@vger.kernel.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>[ARM] 4453/1: Fully Decode ARM instruction set state in show_regs() tombstone</title>
<updated>2007-07-12T10:13:35+00:00</updated>
<author>
<name>George G. Davis</name>
<email>gdavis@mvista.com</email>
</author>
<published>2007-06-26T00:38:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=909d6c6c80311f800aee338e5fa528818b115951'/>
<id>909d6c6c80311f800aee338e5fa528818b115951</id>
<content type='text'>
The ARM show_regs() tombstone only partially decodes which ARM ISA was
executing at the time a fault occurred displaying either "(T)" for the
Thumb case or nothing at all for other cases.  This patch therefore
explicitly identifies which state the processor is in at the time of
a fault: ARM, Thumb, Jazelle or JazelleEE.

Signed-off-by: George G. Davis &lt;gdavis@mvista.com&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
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<pre>
The ARM show_regs() tombstone only partially decodes which ARM ISA was
executing at the time a fault occurred displaying either "(T)" for the
Thumb case or nothing at all for other cases.  This patch therefore
explicitly identifies which state the processor is in at the time of
a fault: ARM, Thumb, Jazelle or JazelleEE.

Signed-off-by: George G. Davis &lt;gdavis@mvista.com&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] Update show_regs/oops register format</title>
<updated>2007-06-18T14:04:42+00:00</updated>
<author>
<name>Russell King</name>
<email>rmk@dyn-67.arm.linux.org.uk</email>
</author>
<published>2007-06-18T13:59:45+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=154c772ebfb12ef66855510e6be2b12c85110b0c'/>
<id>154c772ebfb12ef66855510e6be2b12c85110b0c</id>
<content type='text'>
Add the kernel release and version information to the output of
show_regs/oops.  Add the CPU PSR register.  Avoid using printk
to output partial lines; always output a complete line.

Re-combine the "Control" and "Table + DAC" lines after nommu
separated them; we don't want to waste vertical screen space
needlessly.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add the kernel release and version information to the output of
show_regs/oops.  Add the CPU PSR register.  Avoid using printk
to output partial lines; always output a complete line.

Re-combine the "Control" and "Table + DAC" lines after nommu
separated them; we don't want to waste vertical screen space
needlessly.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] 4258/2: Support for dynticks in idle loop</title>
<updated>2007-04-21T20:02:25+00:00</updated>
<author>
<name>Kevin Hilman</name>
<email>khilman@mvista.com</email>
</author>
<published>2007-03-14T16:33:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=9e4559ddffc012a73ea0b54ed3b6a219c1483ae9'/>
<id>9e4559ddffc012a73ea0b54ed3b6a219c1483ae9</id>
<content type='text'>
And, wrap timer_tick() and sysdev suspend/resume in
!GENERIC_CLOCKEVENTS since clockevent layer takes care
of these.

Signed-off-by: Kevin Hilman &lt;khilman@mvista.com&gt;
Acked-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
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<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
And, wrap timer_tick() and sysdev suspend/resume in
!GENERIC_CLOCKEVENTS since clockevent layer takes care
of these.

Signed-off-by: Kevin Hilman &lt;khilman@mvista.com&gt;
Acked-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] Remove needless linux/ptrace.h includes</title>
<updated>2007-04-21T19:34:47+00:00</updated>
<author>
<name>Russell King</name>
<email>rmk@dyn-67.arm.linux.org.uk</email>
</author>
<published>2007-03-03T19:45:25+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=0f0a00beb80624a446ba7c0152cd171008eeab2e'/>
<id>0f0a00beb80624a446ba7c0152cd171008eeab2e</id>
<content type='text'>
Lots of places in arch/arm were needlessly including linux/ptrace.h,
resumably because we used to pass a struct pt_regs to interrupt
handlers.  Now that we don't, all these ptrace.h includes are
redundant.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Lots of places in arch/arm were needlessly including linux/ptrace.h,
resumably because we used to pass a struct pt_regs to interrupt
handlers.  Now that we don't, all these ptrace.h includes are
redundant.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] Move processor_modes[] to .../process.c</title>
<updated>2007-02-06T16:46:48+00:00</updated>
<author>
<name>Russell King</name>
<email>rmk@dyn-67.arm.linux.org.uk</email>
</author>
<published>2007-01-09T12:57:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=ae0a846e411dc0b568e8ccda584896310ee5f369'/>
<id>ae0a846e411dc0b568e8ccda584896310ee5f369</id>
<content type='text'>
bad_mode() currently prints the mode which caused the exception, and
then causes an oops dump to be printed which again displays this
information (since the CPSR in the struct pt_regs is correct.)  This
leads to processor_modes[] being shared between traps.c and process.c
with a local declaration of it.

We can clean this up by moving processor_modes[] to process.c and
removing the duplication, resulting in processor_modes[] becoming
static.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
bad_mode() currently prints the mode which caused the exception, and
then causes an oops dump to be printed which again displays this
information (since the CPSR in the struct pt_regs is correct.)  This
leads to processor_modes[] being shared between traps.c and process.c
with a local declaration of it.

We can clean this up by moving processor_modes[] to process.c and
removing the duplication, resulting in processor_modes[] becoming
static.

Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] 3911/2: Simplify alloc_thread_info on ARM</title>
<updated>2006-11-30T15:27:03+00:00</updated>
<author>
<name>Paul Gortmaker</name>
<email>paul.gortmaker@gmail.com</email>
</author>
<published>2006-11-02T15:41:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=122214428a7bfab2c09b417f3acdb06222e81748'/>
<id>122214428a7bfab2c09b417f3acdb06222e81748</id>
<content type='text'>
Remove ARM local cache of 4 struct thread_info.
Can cause oops under certain circumstances.

Russell indicated the original optimization was
required on older kernels to avoid thread starvation
on memory fragmentation, but may no longer be
required.  I've updated the patch to 19rc4 and
ensured no &lt;config.h&gt; dain-bramage slipped in this
time (sorry about that).

Original description follows:

I was given some test results which pointed to an
Oops in alloc_thread_info (happened 2x), and after
looking at the code, I see that ARM has its own
local cache of 4 struct thread_info. There wasn't
any clear (to me) synchronization between the
alloc_thread_info and the free_thread_info.

I looked over the other arch, and they all simply
allocate them on an as needed basis, so I simplified
the ARM to do the same, based on the other arch
(e.g. PPC) and the folks doing the testing have
indicated that this fixed the oops.

Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Remove ARM local cache of 4 struct thread_info.
Can cause oops under certain circumstances.

Russell indicated the original optimization was
required on older kernels to avoid thread starvation
on memory fragmentation, but may no longer be
required.  I've updated the patch to 19rc4 and
ensured no &lt;config.h&gt; dain-bramage slipped in this
time (sorry about that).

Original description follows:

I was given some test results which pointed to an
Oops in alloc_thread_info (happened 2x), and after
looking at the code, I see that ARM has its own
local cache of 4 struct thread_info. There wasn't
any clear (to me) synchronization between the
alloc_thread_info and the free_thread_info.

I looked over the other arch, and they all simply
allocate them on an as needed basis, so I simplified
the ARM to do the same, based on the other arch
(e.g. PPC) and the folks doing the testing have
indicated that this fixed the oops.

Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] nommu: manage the CP15 things</title>
<updated>2006-09-27T16:34:30+00:00</updated>
<author>
<name>Hyok S. Choi</name>
<email>hyok.choi@samsung.com</email>
</author>
<published>2006-09-26T08:36:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f12d0d7c7786af39435ef6ae9defe47fb58f6091'/>
<id>f12d0d7c7786af39435ef6ae9defe47fb58f6091</id>
<content type='text'>
All the current CP15 access codes in ARM arch can be categorized and
conditioned by the defines as follows:

     Related operation	Safe condition
  a. any CP15 access	!CPU_CP15
  b. alignment trap	CPU_CP15_MMU
  c. D-cache(C-bit)	CPU_CP15
  d. I-cache		CPU_CP15 &amp;&amp; !( CPU_ARM610 || CPU_ARM710 ||
				CPU_ARM720 || CPU_ARM740 ||
				CPU_XSCALE || CPU_XSC3 )
  e. alternate vector	CPU_CP15 &amp;&amp; !CPU_ARM740
  f. TTB		CPU_CP15_MMU
  g. Domain		CPU_CP15_MMU
  h. FSR/FAR		CPU_CP15_MMU

For example, alternate vector is supported if and only if
"CPU_CP15 &amp;&amp; !CPU_ARM740" is satisfied.

Signed-off-by: Hyok S. Choi &lt;hyok.choi@samsung.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
All the current CP15 access codes in ARM arch can be categorized and
conditioned by the defines as follows:

     Related operation	Safe condition
  a. any CP15 access	!CPU_CP15
  b. alignment trap	CPU_CP15_MMU
  c. D-cache(C-bit)	CPU_CP15
  d. I-cache		CPU_CP15 &amp;&amp; !( CPU_ARM610 || CPU_ARM710 ||
				CPU_ARM720 || CPU_ARM740 ||
				CPU_XSCALE || CPU_XSC3 )
  e. alternate vector	CPU_CP15 &amp;&amp; !CPU_ARM740
  f. TTB		CPU_CP15_MMU
  g. Domain		CPU_CP15_MMU
  h. FSR/FAR		CPU_CP15_MMU

For example, alternate vector is supported if and only if
"CPU_CP15 &amp;&amp; !CPU_ARM740" is satisfied.

Signed-off-by: Hyok S. Choi &lt;hyok.choi@samsung.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm</title>
<updated>2006-07-02T22:04:12+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@g5.osdl.org</email>
</author>
<published>2006-07-02T22:04:12+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=a8c4c20dfa8b28a3c99e33c639d9c2ea5657741e'/>
<id>a8c4c20dfa8b28a3c99e33c639d9c2ea5657741e</id>
<content type='text'>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 3541/2: workaround for PXA27x erratum E7
  [ARM] nommu: provide a way for correct control register value selection
  [ARM] 3705/1: add supersection support to ioremap()
  [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure
  [ARM] 3706/2: ep93xx: add cirrus logic edb9315a support
  [ARM] 3704/1: format IOP Kconfig with tabs, create more consistency
  [ARM] 3703/1: Add help description for ARCH_EP80219
  [ARM] 3678/1: MMC: Make OMAP MMC work
  [ARM] 3677/1: OMAP: Update H2 defconfig
  [ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1
  [ARM] Add section support to ioremap
  [ARM] Fix sa11x0 SDRAM selection
  [ARM] Set bit 4 on section mappings correctly depending on CPU
  [ARM] 3666/1: TRIZEPS4 [1/5] core
  ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring
  ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE
  ARM: OMAP: Update dmtimers
  ARM: OMAP: Make clock variables static
  ARM: OMAP: Fix GPMC compilation when DEBUG is defined
  ARM: OMAP: Mux updates for external DMA and GPIO
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 3541/2: workaround for PXA27x erratum E7
  [ARM] nommu: provide a way for correct control register value selection
  [ARM] 3705/1: add supersection support to ioremap()
  [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure
  [ARM] 3706/2: ep93xx: add cirrus logic edb9315a support
  [ARM] 3704/1: format IOP Kconfig with tabs, create more consistency
  [ARM] 3703/1: Add help description for ARCH_EP80219
  [ARM] 3678/1: MMC: Make OMAP MMC work
  [ARM] 3677/1: OMAP: Update H2 defconfig
  [ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1
  [ARM] Add section support to ioremap
  [ARM] Fix sa11x0 SDRAM selection
  [ARM] Set bit 4 on section mappings correctly depending on CPU
  [ARM] 3666/1: TRIZEPS4 [1/5] core
  ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring
  ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE
  ARM: OMAP: Update dmtimers
  ARM: OMAP: Make clock variables static
  ARM: OMAP: Fix GPMC compilation when DEBUG is defined
  ARM: OMAP: Mux updates for external DMA and GPIO
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>[ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure</title>
<updated>2006-07-01T18:56:48+00:00</updated>
<author>
<name>Lennert Buytenhek</name>
<email>buytenh@wantstofly.org</email>
</author>
<published>2006-07-01T18:56:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=ae95bfbb2b67eba5d67a0478a8715682a87e2616'/>
<id>ae95bfbb2b67eba5d67a0478a8715682a87e2616</id>
<content type='text'>
Patch from Lennert Buytenhek

This patch makes the iWMMXt context switch hook use the generic
thread notifier infrastructure that was recently merged in commit
d6551e884cf66de072b81f8b6d23259462c40baf.

Signed-off-by: Lennert Buytenhek &lt;buytenh@wantstofly.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Patch from Lennert Buytenhek

This patch makes the iWMMXt context switch hook use the generic
thread notifier infrastructure that was recently merged in commit
d6551e884cf66de072b81f8b6d23259462c40baf.

Signed-off-by: Lennert Buytenhek &lt;buytenh@wantstofly.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
</pre>
</div>
</content>
</entry>
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