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Pavel Shilovsky authored and Steve French committed Mar 31, 2012
1 parent 8bae429 commit 75a9285
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 6c216ec636f75d834461be15f83ec41a6759bd2b
refs/heads/master: b5efb978469d152c2c7c0a09746fb0bfc6171868

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18 changes: 0 additions & 18 deletions trunk/Documentation/DMA-attributes.txt
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Expand Up @@ -31,21 +31,3 @@ may be weakly ordered, that is that reads and writes may pass each other.
Since it is optional for platforms to implement DMA_ATTR_WEAK_ORDERING,
those that do not will simply ignore the attribute and exhibit default
behavior.

DMA_ATTR_WRITE_COMBINE
----------------------

DMA_ATTR_WRITE_COMBINE specifies that writes to the mapping may be
buffered to improve performance.

Since it is optional for platforms to implement DMA_ATTR_WRITE_COMBINE,
those that do not will simply ignore the attribute and exhibit default
behavior.

DMA_ATTR_NON_CONSISTENT
-----------------------

DMA_ATTR_NON_CONSISTENT lets the platform to choose to return either
consistent or non-consistent memory as it sees fit. By using this API,
you are guaranteeing to the platform that you have all the correct and
necessary sync points for this memory in the driver.
17 changes: 0 additions & 17 deletions trunk/Documentation/DocBook/device-drivers.tmpl
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Expand Up @@ -446,21 +446,4 @@ X!Idrivers/video/console/fonts.c
!Edrivers/i2c/i2c-core.c
</chapter>

<chapter id="hsi">
<title>High Speed Synchronous Serial Interface (HSI)</title>

<para>
High Speed Synchronous Serial Interface (HSI) is a
serial interface mainly used for connecting application
engines (APE) with cellular modem engines (CMT) in cellular
handsets.

HSI provides multiplexing for up to 16 logical channels,
low-latency and full duplex communication.
</para>

!Iinclude/linux/hsi/hsi.h
!Edrivers/hsi/hsi.c
</chapter>

</book>
2 changes: 1 addition & 1 deletion trunk/Documentation/cgroups/cpusets.txt
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Expand Up @@ -217,7 +217,7 @@ and name space for cpusets, with a minimum of additional kernel code.

The cpus and mems files in the root (top_cpuset) cpuset are
read-only. The cpus file automatically tracks the value of
cpu_online_mask using a CPU hotplug notifier, and the mems file
cpu_online_map using a CPU hotplug notifier, and the mems file
automatically tracks the value of node_states[N_HIGH_MEMORY]--i.e.,
nodes with memory--using the cpuset_track_online_nodes() hook.

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22 changes: 11 additions & 11 deletions trunk/Documentation/cpu-hotplug.txt
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Expand Up @@ -47,7 +47,7 @@ maxcpus=n Restrict boot time cpus to n. Say if you have 4 cpus, using
other cpus later online, read FAQ's for more info.

additional_cpus=n (*) Use this to limit hotpluggable cpus. This option sets
cpu_possible_mask = cpu_present_mask + additional_cpus
cpu_possible_map = cpu_present_map + additional_cpus

cede_offline={"off","on"} Use this option to disable/enable putting offlined
processors to an extended H_CEDE state on
Expand All @@ -64,33 +64,33 @@ should only rely on this to count the # of cpus, but *MUST* not rely
on the apicid values in those tables for disabled apics. In the event
BIOS doesn't mark such hot-pluggable cpus as disabled entries, one could
use this parameter "additional_cpus=x" to represent those cpus in the
cpu_possible_mask.
cpu_possible_map.

possible_cpus=n [s390,x86_64] use this to set hotpluggable cpus.
This option sets possible_cpus bits in
cpu_possible_mask. Thus keeping the numbers of bits set
cpu_possible_map. Thus keeping the numbers of bits set
constant even if the machine gets rebooted.

CPU maps and such
-----------------
[More on cpumaps and primitive to manipulate, please check
include/linux/cpumask.h that has more descriptive text.]

cpu_possible_mask: Bitmap of possible CPUs that can ever be available in the
cpu_possible_map: Bitmap of possible CPUs that can ever be available in the
system. This is used to allocate some boot time memory for per_cpu variables
that aren't designed to grow/shrink as CPUs are made available or removed.
Once set during boot time discovery phase, the map is static, i.e no bits
are added or removed anytime. Trimming it accurately for your system needs
upfront can save some boot time memory. See below for how we use heuristics
in x86_64 case to keep this under check.

cpu_online_mask: Bitmap of all CPUs currently online. Its set in __cpu_up()
cpu_online_map: Bitmap of all CPUs currently online. Its set in __cpu_up()
after a cpu is available for kernel scheduling and ready to receive
interrupts from devices. Its cleared when a cpu is brought down using
__cpu_disable(), before which all OS services including interrupts are
migrated to another target CPU.

cpu_present_mask: Bitmap of CPUs currently present in the system. Not all
cpu_present_map: Bitmap of CPUs currently present in the system. Not all
of them may be online. When physical hotplug is processed by the relevant
subsystem (e.g ACPI) can change and new bit either be added or removed
from the map depending on the event is hot-add/hot-remove. There are currently
Expand All @@ -99,22 +99,22 @@ at which time hotplug is disabled.

You really dont need to manipulate any of the system cpu maps. They should
be read-only for most use. When setting up per-cpu resources almost always use
cpu_possible_mask/for_each_possible_cpu() to iterate.
cpu_possible_map/for_each_possible_cpu() to iterate.

Never use anything other than cpumask_t to represent bitmap of CPUs.

#include <linux/cpumask.h>

for_each_possible_cpu - Iterate over cpu_possible_mask
for_each_online_cpu - Iterate over cpu_online_mask
for_each_present_cpu - Iterate over cpu_present_mask
for_each_possible_cpu - Iterate over cpu_possible_map
for_each_online_cpu - Iterate over cpu_online_map
for_each_present_cpu - Iterate over cpu_present_map
for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.

#include <linux/cpu.h>
get_online_cpus() and put_online_cpus():

The above calls are used to inhibit cpu hotplug operations. While the
cpu_hotplug.refcount is non zero, the cpu_online_mask will not change.
cpu_hotplug.refcount is non zero, the cpu_online_map will not change.
If you merely need to avoid cpus going away, you could also use
preempt_disable() and preempt_enable() for those sections.
Just remember the critical section cannot call any
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8 changes: 8 additions & 0 deletions trunk/Documentation/feature-removal-schedule.txt
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Expand Up @@ -6,6 +6,14 @@ be removed from this file.

---------------------------

What: x86 floppy disable_hlt
When: 2012
Why: ancient workaround of dubious utility clutters the
code used by everybody else.
Who: Len Brown <len.brown@intel.com>

---------------------------

What: CONFIG_APM_CPU_IDLE, and its ability to call APM BIOS in idle
When: 2012
Why: This optional sub-feature of APM is of dubious reliability,
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2 changes: 1 addition & 1 deletion trunk/Documentation/hwmon/k10temp
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Expand Up @@ -11,7 +11,7 @@ Supported chips:
Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)
* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity"
* AMD Family 15h processors: "Bulldozer"

Prefix: 'k10temp'
Addresses scanned: PCI space
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1 change: 0 additions & 1 deletion trunk/Documentation/ioctl/ioctl-number.txt
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Expand Up @@ -225,7 +225,6 @@ Code Seq#(hex) Include File Comments
'j' 00-3F linux/joystick.h
'k' 00-0F linux/spi/spidev.h conflict!
'k' 00-05 video/kyro.h conflict!
'k' 10-17 linux/hsi/hsi_char.h HSI character device
'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
<http://web.archive.org/web/*/http://mikonos.dia.unisa.it/tcfs>
'l' 40-7F linux/udf_fs_i.h in development:
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2 changes: 0 additions & 2 deletions trunk/Documentation/scsi/00-INDEX
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Expand Up @@ -94,5 +94,3 @@ sym53c8xx_2.txt
- info on second generation driver for sym53c8xx based adapters
tmscsim.txt
- info on driver for AM53c974 based adapters
ufs.txt
- info on Universal Flash Storage(UFS) and UFS host controller driver.
4 changes: 0 additions & 4 deletions trunk/Documentation/scsi/st.txt
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Expand Up @@ -390,10 +390,6 @@ MTSETDRVBUFFER
MT_ST_SYSV sets the SYSV semantics (mode)
MT_ST_NOWAIT enables immediate mode (i.e., don't wait for
the command to finish) for some commands (e.g., rewind)
MT_ST_NOWAIT_EOF enables immediate filemark mode (i.e. when
writing a filemark, don't wait for it to complete). Please
see the BASICS note about MTWEOFI with respect to the
possible dangers of writing immediate filemarks.
MT_ST_SILI enables setting the SILI bit in SCSI commands when
reading in variable block mode to enhance performance when
reading blocks shorter than the byte count; set this only
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133 changes: 0 additions & 133 deletions trunk/Documentation/scsi/ufs.txt

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13 changes: 9 additions & 4 deletions trunk/MAINTAINERS
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Expand Up @@ -1251,6 +1251,7 @@ ATHEROS ATH5K WIRELESS DRIVER
M: Jiri Slaby <jirislaby@gmail.com>
M: Nick Kossifidis <mickflemm@gmail.com>
M: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com>
M: Bob Copeland <me@bobcopeland.com>
L: linux-wireless@vger.kernel.org
L: ath5k-devel@lists.ath5k.org
W: http://wireless.kernel.org/en/users/Drivers/ath5k
Expand Down Expand Up @@ -3556,13 +3557,17 @@ L: linux-pm@vger.kernel.org
S: Supported
F: arch/x86/platform/mrst/pmu.*

INTEL PRO/WIRELESS 2100, 2200BG, 2915ABG NETWORK CONNECTION SUPPORT
M: Stanislav Yakovlev <stas.yakovlev@gmail.com>
INTEL PRO/WIRELESS 2100 NETWORK CONNECTION SUPPORT
L: linux-wireless@vger.kernel.org
S: Maintained
S: Orphan
F: Documentation/networking/README.ipw2100
F: drivers/net/wireless/ipw2x00/ipw2100.*

INTEL PRO/WIRELESS 2915ABG NETWORK CONNECTION SUPPORT
L: linux-wireless@vger.kernel.org
S: Orphan
F: Documentation/networking/README.ipw2200
F: drivers/net/wireless/ipw2x00/
F: drivers/net/wireless/ipw2x00/ipw2200.*

INTEL(R) TRUSTED EXECUTION TECHNOLOGY (TXT)
M: Joseph Cihula <joseph.cihula@intel.com>
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