Merge branch 'linus' into cpus4096

cache width is.

cache width is.

int

int

dma_mapping_error(dma_addr_t dma_addr)

dma_mapping_error(struct device *dev, dma_addr_t dma_addr)

int

int

pci_dma_mapping_error(dma_addr_t dma_addr)

pci_dma_mapping_error(struct pci_dev *hwdev, dma_addr_t dma_addr)

In some circumstances dma_map_single and dma_map_page will fail to create

In some circumstances dma_map_single and dma_map_page will fail to create

a mapping. A driver can check for these errors by testing the returned

a mapping. A driver can check for these errors by testing the returned

but these are not global address spaces, but separate for each domain.

but these are not global address spaces, but separate for each domain.

Different DMA engines may support different number of domains.

Different DMA engines may support different number of domains.

We also allocate gaurd pages with each mapping, so we can attempt to catch

We also allocate guard pages with each mapping, so we can attempt to catch

any overflow that might happen.

any overflow that might happen.

- For compatibility testing, could use unity map domain for all devices, just

- For compatibility testing, could use unity map domain for all devices, just

  provide a 1-1 for all useful memory under a single domain for all devices.

  provide a 1-1 for all useful memory under a single domain for all devices.

- API for paravirt ops for abstracting functionlity for VMM folks.

- API for paravirt ops for abstracting functionality for VMM folks.

There are three different groups of fields in the struct taskstats:

There are three different groups of fields in the struct taskstats:

1) Common and basic accounting fields

1) Common and basic accounting fields

    If CONFIG_TASKSTATS is set, the taskstats inteface is enabled and

    If CONFIG_TASKSTATS is set, the taskstats interface is enabled and

    the common fields and basic accounting fields are collected for

    the common fields and basic accounting fields are collected for

    delivery at do_exit() of a task.

    delivery at do_exit() of a task.

2) Delay accounting fields

2) Delay accounting fields

                Set active the IRQ edge(s)/level.  This replaces the

                Set active the IRQ edge(s)/level.  This replaces the

                SA1111 INTPOL manipulation, and the set_GPIO_IRQ_edge()

                SA1111 INTPOL manipulation, and the set_GPIO_IRQ_edge()

                function.  Type should be one of the following:

                function.  Type should be one of IRQ_TYPE_xxx defined in

		<linux/irq.h>

                #define IRQT_NOEDGE     (0)

                #define IRQT_RISING     (__IRQT_RISEDGE)

                #define IRQT_FALLING    (__IRQT_FALEDGE)

                #define IRQT_BOTHEDGE   (__IRQT_RISEDGE|__IRQT_FALEDGE)

                #define IRQT_LOW        (__IRQT_LOWLVL)

                #define IRQT_HIGH       (__IRQT_HIGHLVL)

3. set_GPIO_IRQ_edge() is obsolete, and should be replaced by set_irq_type.

3. set_GPIO_IRQ_edge() is obsolete, and should be replaced by set_irq_type.

show_sampling_rate_(min|max): the minimum and maximum sampling rates

show_sampling_rate_(min|max): the minimum and maximum sampling rates

available that you may set 'sampling_rate' to.

available that you may set 'sampling_rate' to.

up_threshold: defines what the average CPU usaged between the samplings

up_threshold: defines what the average CPU usage between the samplings

of 'sampling_rate' needs to be for the kernel to make a decision on

of 'sampling_rate' needs to be for the kernel to make a decision on

whether it should increase the frequency.  For example when it is set

whether it should increase the frequency.  For example when it is set

to its default value of '80' it means that between the checking

to its default value of '80' it means that between the checking