linux-toradex.git/lib/genalloc.c, branch v4.6-rc3

CPM/QE: use genalloc to manage CPM/QE muram

2015-12-22T23:10:18+00:00

Use genalloc to manage CPM/QE muram instead of rheap.

Signed-off-by: Zhao Qiang 
Signed-off-by: Scott Wood

genalloc:support allocating specific region

2015-12-22T23:10:17+00:00

Add new algo for genalloc, it reserve a specific region of
memory

Signed-off-by: Zhao Qiang 
Signed-off-by: Scott Wood

genalloc:support memory-allocation with bytes-alignment to genalloc

2015-12-22T23:10:17+00:00

Bytes alignment is required to manage some special RAM,
so add gen_pool_first_fit_align to genalloc,
meanwhile add gen_pool_alloc_algo to pass algo in case user
layer using more than one algo, and pass data to
gen_pool_first_fit_align(modify gen_pool_alloc as a wrapper)

Signed-off-by: Zhao Qiang 
Signed-off-by: Scott Wood

genalloc: add support of multiple gen_pools per device

2015-09-04T23:54:41+00:00

This change fills devm_gen_pool_create()/gen_pool_get() "name" argument
stub with contents and extends of_gen_pool_get() functionality on this
basis.

If there is no associated platform device with a device node passed to
of_gen_pool_get(), the function attempts to get a label property or device
node name (= repeats MTD OF partition standard) and seeks for a named
gen_pool registered by device of the parent device node.

The main idea of the change is to allow registration of independent
gen_pools under the same umbrella device, say "partitions" on "storage
device", the original functionality of one "partition" per "storage
device" is untouched.

[akpm@linux-foundation.org: fix constness in devres_find()]
[dan.carpenter@oracle.com: freeing const data pointers]
Signed-off-by: Vladimir Zapolskiy 
Cc: Philipp Zabel 
Cc: Greg Kroah-Hartman 
Cc: Russell King 
Cc: Nicolas Ferre 
Cc: Alexandre Belloni 
Cc: Jean-Christophe Plagniol-Villard 
Cc: Shawn Guo 
Cc: Sascha Hauer 
Cc: Mauro Carvalho Chehab 
Cc: Arnd Bergmann 
Signed-off-by: Dan Carpenter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

genalloc: add name arg to gen_pool_get() and devm_gen_pool_create()

2015-09-04T23:54:41+00:00

This change modifies gen_pool_get() and devm_gen_pool_create() client
interfaces adding one more argument "name" of a gen_pool object.

Due to implementation gen_pool_get() is capable to retrieve only one
gen_pool associated with a device even if multiple gen_pools are created,
fortunately right at the moment it is sufficient for the clients, hence
provide NULL as a valid argument on both producer devm_gen_pool_create()
and consumer gen_pool_get() sides.

Because only one created gen_pool per device is addressable, explicitly
add a restriction to devm_gen_pool_create() to create only one gen_pool
per device, this implies two possible error codes returned by the
function, account it on client side (only misc/sram).  This completes
client side changes related to genalloc updates.

[akpm@linux-foundation.org: gen_pool_get() cleanup]
Signed-off-by: Vladimir Zapolskiy 
Cc: Philipp Zabel 
Cc: Greg Kroah-Hartman 
Cc: Russell King 
Cc: Nicolas Ferre 
Cc: Alexandre Belloni 
Cc: Jean-Christophe Plagniol-Villard 
Cc: Shawn Guo 
Cc: Sascha Hauer 
Cc: Mauro Carvalho Chehab 
Cc: Arnd Bergmann 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

genalloc: rename of_get_named_gen_pool() to of_gen_pool_get()

2015-07-01T02:45:01+00:00

To be consistent with other kernel interface namings, rename
of_get_named_gen_pool() to of_gen_pool_get().  In the original function
name "_named" suffix references to a device tree property, which contains
a phandle to a device and the corresponding device driver is assumed to
register a gen_pool object.

Due to a weak relation and to avoid any confusion (e.g.  in future
possible scenario if gen_pool objects are named) the suffix is removed.

[sfr@canb.auug.org.au: crypto/marvell/cesa - fix up for of_get_named_gen_pool() rename]
Signed-off-by: Vladimir Zapolskiy 
Cc: Nicolas Ferre 
Cc: Philipp Zabel 
Cc: Shawn Guo 
Cc: Sascha Hauer 
Cc: Alexandre Belloni 
Cc: Russell King 
Cc: Mauro Carvalho Chehab 
Cc: Vinod Koul 
Cc: Takashi Iwai 
Cc: Jaroslav Kysela 
Signed-off-by: Stephen Rothwell 
Cc: Herbert Xu 
Cc: Boris BREZILLON 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

genalloc: rename dev_get_gen_pool() to gen_pool_get()

2015-07-01T02:45:01+00:00

To be consistent with other genalloc interface namings, rename
dev_get_gen_pool() to gen_pool_get().  The original omitted "dev_" prefix
is removed, since it points to argument type of the function, and so it
does not bring any useful information.

[akpm@linux-foundation.org: update arch/arm/mach-socfpga/pm.c]
Signed-off-by: Vladimir Zapolskiy 
Acked-by: Nicolas Ferre 
Cc: Philipp Zabel 
Cc: Shawn Guo 
Cc: Sascha Hauer 
Cc: Alexandre Belloni 
Cc: Russell King 
Cc: Mauro Carvalho Chehab 
Cc: Vinod Koul 
Cc: Takashi Iwai 
Cc: Jaroslav Kysela 
Cc: Mark Brown 
Cc: Nicolas Ferre 
Cc: Alan Tull 
Cc: Dinh Nguyen 
Cc: Kevin Hilman 
Cc: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/genalloc.c: check result of devres_alloc()

2015-02-14T05:21:36+00:00

devm_gen_pool_create() calls devres_alloc() and dereferences its result
without checking whether devres_alloc() succeeded.  Check for error and
bail out if it happened.

Coverity-id 1016493.

Signed-off-by: Jan Kara 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/genalloc.c: remove redundant include

2015-02-13T02:54:15+00:00

Removing this include produces byte-identical output, and thus removes a
false dependency.

Signed-off-by: Rasmus Villemoes 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/genalloc.c: fix the end addr check in addr_in_gen_pool()

2015-02-13T02:54:14+00:00

Since chunk->end_addr is (chunk->start_addr + size - 1), the end address
to compare should be (start + size - 1).

Signed-off-by: Toshi Kikuchi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds