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Commit 7a309490 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge commit 'v2.6.30-rc5' into x86/apic 



Merge reason: this branch was on a .30-rc2 base - sync it up with
              all the latest fixes.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parents 9a8709d4 091bf762

.gitignore

+1 −0
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ include/linux/compile.h 
include/linux/version.h

include/linux/utsrelease.h

include/linux/bounds.h

include/generated



# stgit generated dirs

patches-*

Documentation/ABI/testing/sysfs-firmware-acpi

+6 −2
Original line number Diff line number Diff line
@@ -69,9 +69,13 @@ Description: 
		gpe1F:	     0	invalid

		gpe_all:    1192

		sci:	1194

		sci_not:     0	



		sci - The total number of times the ACPI SCI

		has claimed an interrupt.

		sci - The number of times the ACPI SCI

		has been called and claimed an interrupt.



		sci_not - The number of times the ACPI SCI

		has been called and NOT claimed an interrupt.



		gpe_all - count of SCI caused by GPEs.

Documentation/DocBook/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -143,7 +143,8 @@ quiet_cmd_db2pdf = PDF $@ 
	$(call cmd,db2pdf)





main_idx = Documentation/DocBook/index.html

index = index.html

main_idx = Documentation/DocBook/$(index)

build_main_index = rm -rf $(main_idx) && \

		   echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \

		   echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
@@ -232,7 +233,7 @@ clean-files := $(DOCBOOKS) \ 
	$(patsubst %.xml, %.pdf,  $(DOCBOOKS)) \

	$(patsubst %.xml, %.html, $(DOCBOOKS)) \

	$(patsubst %.xml, %.9,    $(DOCBOOKS)) \

	$(C-procfs-example)

	$(C-procfs-example) $(index)



clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man

Documentation/DocBook/kernel-api.tmpl

+5 −1
Original line number Diff line number Diff line
@@ -190,16 +190,20 @@ X!Ekernel/module.c 
!Edrivers/pci/pci.c

!Edrivers/pci/pci-driver.c

!Edrivers/pci/remove.c

!Edrivers/pci/pci-acpi.c

!Edrivers/pci/search.c

!Edrivers/pci/msi.c

!Edrivers/pci/bus.c

!Edrivers/pci/access.c

!Edrivers/pci/irq.c

!Edrivers/pci/htirq.c

<!-- FIXME: Removed for now since no structured comments in source

X!Edrivers/pci/hotplug.c

-->

!Edrivers/pci/probe.c

!Edrivers/pci/slot.c

!Edrivers/pci/rom.c

!Edrivers/pci/iov.c

!Idrivers/pci/pci-sysfs.c

     </sect1>

     <sect1><title>PCI Hotplug Support Library</title>

!Edrivers/pci/hotplug/pci_hotplug_core.c

Documentation/driver-model/platform.txt

+59 −0
Original line number Diff line number Diff line
@@ -169,3 +169,62 @@ three different ways to find such a match: 
      be probed later if another device registers.  (Which is OK, since

      this interface is only for use with non-hotpluggable devices.)





Early Platform Devices and Drivers

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The early platform interfaces provide platform data to platform device

drivers early on during the system boot. The code is built on top of the

early_param() command line parsing and can be executed very early on.



Example: "earlyprintk" class early serial console in 6 steps



1. Registering early platform device data

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The architecture code registers platform device data using the function

early_platform_add_devices(). In the case of early serial console this

should be hardware configuration for the serial port. Devices registered

at this point will later on be matched against early platform drivers.



2. Parsing kernel command line

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The architecture code calls parse_early_param() to parse the kernel

command line. This will execute all matching early_param() callbacks.

User specified early platform devices will be registered at this point.

For the early serial console case the user can specify port on the

kernel command line as "earlyprintk=serial.0" where "earlyprintk" is

the class string, "serial" is the name of the platfrom driver and

0 is the platform device id. If the id is -1 then the dot and the

id can be omitted.



3. Installing early platform drivers belonging to a certain class

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The architecture code may optionally force registration of all early

platform drivers belonging to a certain class using the function

early_platform_driver_register_all(). User specified devices from

step 2 have priority over these. This step is omitted by the serial

driver example since the early serial driver code should be disabled

unless the user has specified port on the kernel command line.



4. Early platform driver registration

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Compiled-in platform drivers making use of early_platform_init() are

automatically registered during step 2 or 3. The serial driver example

should use early_platform_init("earlyprintk", &platform_driver).



5. Probing of early platform drivers belonging to a certain class

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The architecture code calls early_platform_driver_probe() to match

registered early platform devices associated with a certain class with

registered early platform drivers. Matched devices will get probed().

This step can be executed at any point during the early boot. As soon

as possible may be good for the serial port case.



6. Inside the early platform driver probe()

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The driver code needs to take special care during early boot, especially

when it comes to memory allocation and interrupt registration. The code

in the probe() function can use is_early_platform_device() to check if

it is called at early platform device or at the regular platform device

time. The early serial driver performs register_console() at this point.



For further information, see <linux/platform_device.h>.