linux.git/drivers/staging/android, branch v3.3-rc2

Staging: android: fixed 80 characters warnings in lowmemorykiller.c

2011-12-22T21:33:57+00:00

This patch fixes some 80 chatacters limit warnings in the lowmemorykiller.c file

Signed-off-by: Marco Navarra 
Signed-off-by: Greg Kroah-Hartman

Staging: android: fixed a space warning in binder.h

2011-12-22T21:33:57+00:00

This patch fixes a simple tab-space warning in binder.h found by checkpatch tool

Signed-off-by: Marco Navarra 
Signed-off-by: Greg Kroah-Hartman

ashmem: Whitespace cleanups

2011-12-21T21:40:25+00:00

Fixes checkpatch warnings with the ashmem.c file

CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Fix arguments to ashmem_shrink

2011-12-21T21:40:24+00:00

The arguments to shrink functions have changed, update
ashmem_shrink to match.

Signed-off-by: Colin Cross 
[jstultz: tweaked commit subject]
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Support lseek(2) in ashmem driver

2011-12-21T21:40:24+00:00

Signed-off-by: Bjorn Bringert 
[jstultz: tweaked commit subject]
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Update arguments of shrinker for 2.6.35

2011-12-21T21:40:23+00:00

Signed-off-by: Colin Cross 
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Fix ASHMEM_SET_PROT_MASK.

2011-12-21T21:40:23+00:00

Signed-off-by: Arve Hjønnevåg 
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Implement read(2) in ashmem driver

2011-12-21T21:40:22+00:00

Signed-off-by: Bjorn Bringert 
[jstultz: Tweaked commit subject]
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

ashmem: Anonymous shared memory subsystem

2011-12-21T21:38:28+00:00

The anonymous shared memory (ashmem) subsystem provides a
Unix-y,file-based shared memory interface to user-space. It
works like anonymous memory (e.g. mmapping fd=0) except if
you share the file descriptor via the usual means, you will
share the mapping. The shared memory can be accessed via both
mmap or file I/O. The backing store is a simple shmem file.

Additionally, ashmem introduces the concept of page pinning.
Pinned pages (the default) behave like any anonymous memory.
Unpinned pages are available to the kernel for eviction during
VM pressure. When repinning the pages, the return value
instructs user-space as to any eviction. In this manner,
user-space processes may implement caching and similar
resource management that efficiently integrates with kernel
memory management.

Signed-off-by: Robert Love 

ashmem: Don't install fault handler for private mmaps.

Ashmem is used to create named private heaps. If this heap is backed
by a tmpfs file it will allocate two pages for every page touched.
In 2.6.27, the extra page would later be freed, but 2.6.29 does not
scan anonymous pages when running without swap so the memory is not
freed while the file is referenced. This change changes the behavior
of private ashmem mmaps to match /dev/zero instead tmpfs.

Signed-off-by: Arve Hjønnevåg 

ashmem: Add common prefix to name reported in /proc/pid/maps

Signed-off-by: Arve Hjønnevåg 

ashmem: don't require a page aligned size

This makes ashmem more similar to shmem and mmap, by
not requiring the specified size to be page aligned,
instead rounding it internally as needed.

Signed-off-by: Marco Nelissen 
[jstultz: Improved commit subject and included patch description
from rlove. Also moved ashmem files to staging dir, and reworked
code to avoid touching mm/shmem.c while we're in staging.]
CC: Brian Swetland 
CC: Colin Cross 
CC: Arve Hjønnevåg 
CC: Dima Zavin 
CC: Robert Love 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman

staging: android: add pmem driver

2011-12-16T22:08:17+00:00

This adds the Android pmem driver to the staging tree.

[At this point in time, it is dependent on the ARM platform, due to some
build issues that require it. - gregkh]

Signed-off-by: Rebecca Schultz 
Signed-off-by: Rebecca Schultz Zavin 
Signed-off-by: Dima Zavin 
Signed-off-by: Jamie Gennis 
Cc: Brian Swetland 
Cc: Arve Hjønnevåg 
Cc: Colin Cross 
Signed-off-by: Greg Kroah-Hartman