<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/Documentation/cputopology.txt, branch v4.4.72</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>Documentation: Update cputopology.txt</title>
<updated>2015-05-27T13:22:15+00:00</updated>
<author>
<name>Bartosz Golaszewski</name>
<email>bgolaszewski@baylibre.com</email>
</author>
<published>2015-05-26T13:11:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=54a5369487fc0a9506bbf31ab2e00e5dc5d6d4cd'/>
<id>54a5369487fc0a9506bbf31ab2e00e5dc5d6d4cd</id>
<content type='text'>
The documentation on cpu topology seems to be a bit out-of-date.
It doesn't mention the **_siblings_list attributes and uses old
names for topology_**_cpumask() macros.

Add information on missing attributes plus some additional
clarifications.

Signed-off-by: Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;
Cc: Benoit Cousson &lt;bcousson@baylibre.com&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Fenghua Yu &lt;fenghua.yu@intel.com&gt;
Cc: Guenter Roeck &lt;linux@roeck-us.net&gt;
Cc: Jean Delvare &lt;jdelvare@suse.de&gt;
Cc: Jonathan Corbet &lt;corbet@lwn.net&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Oleg Drokin &lt;oleg.drokin@intel.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rafael J. Wysocki &lt;rjw@rjwysocki.net&gt;
Cc: Russell King &lt;linux@arm.linux.org.uk&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Link: http://lkml.kernel.org/r/1432645896-12588-3-git-send-email-bgolaszewski@baylibre.com
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The documentation on cpu topology seems to be a bit out-of-date.
It doesn't mention the **_siblings_list attributes and uses old
names for topology_**_cpumask() macros.

Add information on missing attributes plus some additional
clarifications.

Signed-off-by: Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;
Cc: Benoit Cousson &lt;bcousson@baylibre.com&gt;
Cc: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Fenghua Yu &lt;fenghua.yu@intel.com&gt;
Cc: Guenter Roeck &lt;linux@roeck-us.net&gt;
Cc: Jean Delvare &lt;jdelvare@suse.de&gt;
Cc: Jonathan Corbet &lt;corbet@lwn.net&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Oleg Drokin &lt;oleg.drokin@intel.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rafael J. Wysocki &lt;rjw@rjwysocki.net&gt;
Cc: Russell King &lt;linux@arm.linux.org.uk&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Link: http://lkml.kernel.org/r/1432645896-12588-3-git-send-email-bgolaszewski@baylibre.com
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()</title>
<updated>2015-05-27T13:22:15+00:00</updated>
<author>
<name>Bartosz Golaszewski</name>
<email>bgolaszewski@baylibre.com</email>
</author>
<published>2015-05-26T13:11:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=06931e62246844c73fba24d7aeb4a5dc897a2739'/>
<id>06931e62246844c73fba24d7aeb4a5dc897a2739</id>
<content type='text'>
Rename topology_thread_cpumask() to topology_sibling_cpumask()
for more consistency with scheduler code.

Signed-off-by: Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;
Reviewed-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Acked-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Benoit Cousson &lt;bcousson@baylibre.com&gt;
Cc: Fenghua Yu &lt;fenghua.yu@intel.com&gt;
Cc: Guenter Roeck &lt;linux@roeck-us.net&gt;
Cc: Jean Delvare &lt;jdelvare@suse.de&gt;
Cc: Jonathan Corbet &lt;corbet@lwn.net&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Oleg Drokin &lt;oleg.drokin@intel.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rafael J. Wysocki &lt;rjw@rjwysocki.net&gt;
Cc: Russell King &lt;linux@arm.linux.org.uk&gt;
Cc: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Link: http://lkml.kernel.org/r/1432645896-12588-2-git-send-email-bgolaszewski@baylibre.com
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Rename topology_thread_cpumask() to topology_sibling_cpumask()
for more consistency with scheduler code.

Signed-off-by: Bartosz Golaszewski &lt;bgolaszewski@baylibre.com&gt;
Reviewed-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Acked-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: Benoit Cousson &lt;bcousson@baylibre.com&gt;
Cc: Fenghua Yu &lt;fenghua.yu@intel.com&gt;
Cc: Guenter Roeck &lt;linux@roeck-us.net&gt;
Cc: Jean Delvare &lt;jdelvare@suse.de&gt;
Cc: Jonathan Corbet &lt;corbet@lwn.net&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Oleg Drokin &lt;oleg.drokin@intel.com&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Rafael J. Wysocki &lt;rjw@rjwysocki.net&gt;
Cc: Russell King &lt;linux@arm.linux.org.uk&gt;
Cc: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Link: http://lkml.kernel.org/r/1432645896-12588-2-git-send-email-bgolaszewski@baylibre.com
Signed-off-by: Ingo Molnar &lt;mingo@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>doc: Documentation/cputopology.txt fix typo</title>
<updated>2013-09-04T10:59:47+00:00</updated>
<author>
<name>Xishi Qiu</name>
<email>qiuxishi@huawei.com</email>
</author>
<published>2013-09-04T10:58:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=f8ea61e63442c25cbe6ddee48979b444f1f2a01c'/>
<id>f8ea61e63442c25cbe6ddee48979b444f1f2a01c</id>
<content type='text'>
Fix a trivial typo in Documentation/cputopology.txt

Signed-off-by: Xishi Qiu &lt;qiuxishi@huawei.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix a trivial typo in Documentation/cputopology.txt

Signed-off-by: Xishi Qiu &lt;qiuxishi@huawei.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>topology/sysfs: Provide book id and siblings attributes</title>
<updated>2010-09-09T18:41:25+00:00</updated>
<author>
<name>Heiko Carstens</name>
<email>heiko.carstens@de.ibm.com</email>
</author>
<published>2010-08-31T08:28:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=b40d8ed4e42c79f8ed1cf345eed0888f4a2f0678'/>
<id>b40d8ed4e42c79f8ed1cf345eed0888f4a2f0678</id>
<content type='text'>
Create attributes:

 /sys/devices/system/cpu/cpuX/topology/book_id
 /sys/devices/system/cpu/cpuX/topology/book_siblings

which show the book id and the book siblings of a cpu.

Unlike the attributes for SMT and MC these attributes are only present if
CONFIG_SCHED_BOOK is set. There is no reason to pollute sysfs for every
architecture with unused attributes.

Signed-off-by: Heiko Carstens &lt;heiko.carstens@de.ibm.com&gt;
Signed-off-by: Peter Zijlstra &lt;a.p.zijlstra@chello.nl&gt;
LKML-Reference: &lt;20100831082844.435648457@de.ibm.com&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Create attributes:

 /sys/devices/system/cpu/cpuX/topology/book_id
 /sys/devices/system/cpu/cpuX/topology/book_siblings

which show the book id and the book siblings of a cpu.

Unlike the attributes for SMT and MC these attributes are only present if
CONFIG_SCHED_BOOK is set. There is no reason to pollute sysfs for every
architecture with unused attributes.

Signed-off-by: Heiko Carstens &lt;heiko.carstens@de.ibm.com&gt;
Signed-off-by: Peter Zijlstra &lt;a.p.zijlstra@chello.nl&gt;
LKML-Reference: &lt;20100831082844.435648457@de.ibm.com&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Documentation: ABI: /sys/devices/system/cpu/cpu#/ topology files</title>
<updated>2009-10-30T21:59:52+00:00</updated>
<author>
<name>Alex Chiang</name>
<email>achiang@hp.com</email>
</author>
<published>2009-10-22T03:45:31+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=663fb2fc733006f685400fb44551303b72b61a88'/>
<id>663fb2fc733006f685400fb44551303b72b61a88</id>
<content type='text'>
Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/cpu#/topology/core_id
	/sys/devices/system/cpu/cpu#/topology/core_siblings
	/sys/devices/system/cpu/cpu#/topology/core_siblings_list
	/sys/devices/system/cpu/cpu#/topology/physical_package_id
	/sys/devices/system/cpu/cpu#/topology/thread_siblings
	/sys/devices/system/cpu/cpu#/topology/thread_siblings_list

The descriptions in Documentation/cputopology.txt weren't very
informative, so I attempted a better description based on code
reading and hopeful guessing.

Updated Documentation/cputopology.txt with the better descriptions and
fixed some style issues.

Cc: Mike Travis &lt;travis@sgi.com&gt;
Cc: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Signed-off-by: Alex Chiang &lt;achiang@hp.com&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>
Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/cpu#/topology/core_id
	/sys/devices/system/cpu/cpu#/topology/core_siblings
	/sys/devices/system/cpu/cpu#/topology/core_siblings_list
	/sys/devices/system/cpu/cpu#/topology/physical_package_id
	/sys/devices/system/cpu/cpu#/topology/thread_siblings
	/sys/devices/system/cpu/cpu#/topology/thread_siblings_list

The descriptions in Documentation/cputopology.txt weren't very
informative, so I attempted a better description based on code
reading and hopeful guessing.

Updated Documentation/cputopology.txt with the better descriptions and
fixed some style issues.

Cc: Mike Travis &lt;travis@sgi.com&gt;
Cc: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Signed-off-by: Alex Chiang &lt;achiang@hp.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</pre>
</div>
</content>
</entry>
<entry>
<title>cpumask: Use topology_core_cpumask()/topology_thread_cpumask()</title>
<updated>2009-01-11T18:12:49+00:00</updated>
<author>
<name>Rusty Russell</name>
<email>rusty@rustcorp.com.au</email>
</author>
<published>2009-01-11T05:58:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=fbd59a8d1f7cf325fdb6828659f1fb76631e87b3'/>
<id>fbd59a8d1f7cf325fdb6828659f1fb76631e87b3</id>
<content type='text'>
Impact: reduce stack usage, use new cpumask API.

This actually uses topology_core_cpumask() and
topology_thread_cpumask(), removing the only users of
topology_core_siblings() and topology_thread_siblings()

Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Signed-off-by: Mike Travis &lt;travis@sgi.com&gt;
Cc: linux-net-drivers@solarflare.com
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Impact: reduce stack usage, use new cpumask API.

This actually uses topology_core_cpumask() and
topology_thread_cpumask(), removing the only users of
topology_core_siblings() and topology_thread_siblings()

Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Signed-off-by: Mike Travis &lt;travis@sgi.com&gt;
Cc: linux-net-drivers@solarflare.com
</pre>
</div>
</content>
</entry>
<entry>
<title>sysfs: add documentation to cputopology.txt for system cpumasks</title>
<updated>2008-12-19T07:17:12+00:00</updated>
<author>
<name>Mike Travis</name>
<email>travis@sgi.com</email>
</author>
<published>2008-12-17T22:14:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=d62720ade82c5e5b8f9585e5ed02c89573ebf111'/>
<id>d62720ade82c5e5b8f9585e5ed02c89573ebf111</id>
<content type='text'>
Add information to cputopology.txt explaining the output of various
system cpumask's.

Signed-off-by: Mike Travis &lt;travis@sgi.com&gt;
Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add information to cputopology.txt explaining the output of various
system cpumask's.

Signed-off-by: Mike Travis &lt;travis@sgi.com&gt;
Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>cpu topology: always define CPU topology information</title>
<updated>2008-06-13T08:09:46+00:00</updated>
<author>
<name>Ben Hutchings</name>
<email>bhutchings@solarflare.com</email>
</author>
<published>2008-06-05T04:47:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=c50cbb05a05cf1f9ca3592272eff053c847727d8'/>
<id>c50cbb05a05cf1f9ca3592272eff053c847727d8</id>
<content type='text'>
This can result in an empty topology directory in sysfs, and requires
in-kernel users to protect all uses with #ifdef - see
&lt;http://marc.info/?l=linux-netdev&amp;m=120639033904472&amp;w=2&gt;.

The documentation of CPU topology specifies what the defaults should be if
only partial information is available from the hardware.  So we can
provide these defaults as a fallback.

This patch:

- Adds default definitions of the 4 topology macros to &lt;linux/topology.h&gt;
- Changes drivers/base/topology.c to use the topology macros unconditionally
  and to cope with definitions that aren't lvalues
- Updates documentation accordingly

[ From: Andrew Morton &lt;akpm@linux-foundation.org&gt;
  - fold now-duplicated code
  - fix layout
]

Signed-off-by: Ben Hutchings &lt;bhutchings@solarflare.com&gt;
Cc: Vegard Nossum &lt;vegard.nossum@gmail.com&gt;
Cc: Nick Piggin &lt;nickpiggin@yahoo.com.au&gt;
Cc: Chandra Seetharaman &lt;sekharan@us.ibm.com&gt;
Cc: Suresh Siddha &lt;suresh.b.siddha@intel.com&gt;
Cc: Mike Travis &lt;travis@sgi.com&gt;
Cc: Christoph Lameter &lt;clameter@sgi.com&gt;
Cc: John Hawkes &lt;hawkes@sgi.com&gt;
Cc: Zhang, Yanmin &lt;yanmin.zhang@intel.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This can result in an empty topology directory in sysfs, and requires
in-kernel users to protect all uses with #ifdef - see
&lt;http://marc.info/?l=linux-netdev&amp;m=120639033904472&amp;w=2&gt;.

The documentation of CPU topology specifies what the defaults should be if
only partial information is available from the hardware.  So we can
provide these defaults as a fallback.

This patch:

- Adds default definitions of the 4 topology macros to &lt;linux/topology.h&gt;
- Changes drivers/base/topology.c to use the topology macros unconditionally
  and to cope with definitions that aren't lvalues
- Updates documentation accordingly

[ From: Andrew Morton &lt;akpm@linux-foundation.org&gt;
  - fold now-duplicated code
  - fix layout
]

Signed-off-by: Ben Hutchings &lt;bhutchings@solarflare.com&gt;
Cc: Vegard Nossum &lt;vegard.nossum@gmail.com&gt;
Cc: Nick Piggin &lt;nickpiggin@yahoo.com.au&gt;
Cc: Chandra Seetharaman &lt;sekharan@us.ibm.com&gt;
Cc: Suresh Siddha &lt;suresh.b.siddha@intel.com&gt;
Cc: Mike Travis &lt;travis@sgi.com&gt;
Cc: Christoph Lameter &lt;clameter@sgi.com&gt;
Cc: John Hawkes &lt;hawkes@sgi.com&gt;
Cc: Zhang, Yanmin &lt;yanmin.zhang@intel.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Fix typos in Documentation/: 'D'-'E'</title>
<updated>2006-10-03T20:47:42+00:00</updated>
<author>
<name>Matt LaPlante</name>
<email>kernel1@cyberdogtech.com</email>
</author>
<published>2006-10-03T20:47:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=fff9289b219f48cb2296714fea3d71f516991f9f'/>
<id>fff9289b219f48cb2296714fea3d71f516991f9f</id>
<content type='text'>
This patch fixes typos in various Documentation txts. This patch addresses
some words starting with the letters 'D'-'E'.

Signed-off-by: Matt LaPlante &lt;kernel1@cyberdogtech.com&gt;
Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This patch fixes typos in various Documentation txts. This patch addresses
some words starting with the letters 'D'-'E'.

Signed-off-by: Matt LaPlante &lt;kernel1@cyberdogtech.com&gt;
Signed-off-by: Adrian Bunk &lt;bunk@stusta.de&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>[PATCH] trivial typos in Documentation/cputopology.txt</title>
<updated>2006-03-28T17:16:08+00:00</updated>
<author>
<name>Jesper Juhl</name>
<email>jesper.juhl@gmail.com</email>
</author>
<published>2006-03-28T09:56:52+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=ded23ac62776b4360d88e9b0330792d2c57fdfdf'/>
<id>ded23ac62776b4360d88e9b0330792d2c57fdfdf</id>
<content type='text'>
Fix a few trivial mistakes in Documentation/cputopology.txt

Signed-off-by: Jesper Juhl &lt;jesper.juhl@gmail.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@osdl.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@osdl.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix a few trivial mistakes in Documentation/cputopology.txt

Signed-off-by: Jesper Juhl &lt;jesper.juhl@gmail.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>
</feed>
