| 0c8d44f239b453517d25d0fcfd2737bb5cb34ef8 |
|
01-Jul-2011 |
Paul Gortmaker <paul.gortmaker@windriver.com> |
block: Fix files that are modules and hence need module.h
We want to remove the implicit everywhere presence of module.h
so fix up the people relying on that implicit presence in advance.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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| 5a7bbad27a410350e64a2d7f5ec18fc73836c14f |
|
12-Sep-2011 |
Christoph Hellwig <hch@infradead.org> |
block: remove support for bio remapping from ->make_request
There is very little benefit in allowing to let a ->make_request
instance update the bios device and sector and loop around it in
__generic_make_request when we can archive the same through calling
generic_make_request from the driver and letting the loop in
generic_make_request handle it.
Note that various drivers got the return value from ->make_request and
returned non-zero values for errors.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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| 5a0e3ad6af8660be21ca98a971cd00f331318c05 |
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24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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| 91f63d0efa1b2ff3f8773aad61c2970f097232aa |
|
01-Mar-2010 |
Stephen Rothwell <sfr@canb.auug.org.au> |
block: fix for "Consolidate phys_segment and hw_segment limits"
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
| 8a78362c4eefc1deddbefe2c7f38aabbc2429d6b |
|
26-Feb-2010 |
Martin K. Petersen <martin.petersen@oracle.com> |
block: Consolidate phys_segment and hw_segment limits
Except for SCSI no device drivers distinguish between physical and
hardware segment limits. Consolidate the two into a single segment
limit.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
| 086fa5ff0854c676ec333760f4c0154b3b242616 |
|
26-Feb-2010 |
Martin K. Petersen <martin.petersen@oracle.com> |
block: Rename blk_queue_max_sectors to blk_queue_max_hw_sectors
The block layer calling convention is blk_queue_<limit name>.
blk_queue_max_sectors predates this practice, leading to some confusion.
Rename the function to appropriately reflect that its intended use is to
set max_hw_sectors.
Also introduce a temporary wrapper for backwards compability. This can
be removed after the merge window is closed.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
| eb28d31bc97e6374d81f404da309401ffaed467b |
|
26-Feb-2010 |
Martin K. Petersen <martin.petersen@oracle.com> |
block: Add BLK_ prefix to definitions
Add a BLK_ prefix to block layer constants.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
| f21121cde6e617b90cd03ce083652ca543004dc2 |
|
04-Nov-2009 |
Hideyuki Sasaki <Hideyuki_Sasaki@hq.scei.sony.co.jp> |
block/ps3: fix slow VRAM IO
The current PS3 VRAM driver uses msleep() to wait for completion of RSX
DMA transfers between system memory and VRAM. Depending on the system
timing, the processing delay and overhead of this msleep() call can
significantly impact VRAM driver IO.
To avoid the condition, add a short duration (200 usec max) udelay()
polling loop before entering the msleep() polling loop.
Signed-off-by: Hideyuki Sasaki <xhide@rd.scei.sony.co.jp>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Jim Paris <jim@jtan.com>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
| 83d5cde47dedf01b6a4a4331882cbc0a7eea3c2e |
|
22-Sep-2009 |
Alexey Dobriyan <adobriyan@gmail.com> |
const: make block_device_operations const
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
| 9413c8836a16e9d034928a7f9d3ad81bebd71ce9 |
|
29-Jul-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
powerpc/cell: Move CBE_IOPTE_* to <asm/cell-regs.h>
As <asm/iommu.h> doesn't contain any other hardware specific definitions
but only interfaces.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 5888fd30ac70fa50f08979c46f9206d01ca6ad49 |
|
05-May-2009 |
Roel Kluin <roel.kluin@gmail.com> |
block/ps3: remove driver_data direct access of struct device
In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device. Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used. These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
| 03fa68c245cccbcb99035cbabaa13b408ba91ab5 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3: shorten ps3_system_bus_[gs]et_driver_data to ps3_system_bus_[gs]et_drvdata
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Cc: Jim Paris <jim@jtan.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 6dee2c87ebbe5d7ce8c4c163966a0bd9c02c75ef |
|
10-Jun-2009 |
Roel Kluin <roel.kluin@gmail.com> |
block/ps3: remove driver_data direct access of struct device
In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device. Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used. These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.
[Geert: Use ps3_system_bus_[gs]et_driver_data() for ps3_system_bus_device]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 1bd9784f5ebb5b1b5a1efb8302d7b57c6483e2e6 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: Make ps3vram_priv.reports a void *
So we can kill a cast.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| c3b94fd800cc7eb59c91ccb55326cdaf589b0e88 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: Remove no longer used ps3vram_priv.ddr_base
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| fb89e89d0ff6142f0616eb8260ea89d6fd924982 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: Replace mutex by spinlock + bio_list
Remove the mutex serializing access to the cache.
Instead, queue up new requests on a bio_list if the driver is busy.
This improves sequential write performance by ca. 2%.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| d3352c9f1e8e2f2989d9686c8aa8acb4842fe75e |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3fb/vram: Extract common GPU stuff into <asm/ps3gpu.h>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 56ac72dba5d24a477d281b985797d5e62d3f5c2e |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: GPU memory mapping cleanup
- Make the IOMMU flags used for mapping main memory into the GPU's I/O space
explicit, instead of relying on the default in the hypervisor,
- Add missing calls to lv1_gpu_context_iomap(..., CBE_IOPTE_M) to unmap the
memory during cleanup.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 3273d8778f90457a495603945e95b47c2c139f22 |
|
10-Jun-2009 |
Jim Paris <jim@jtan.com> |
ps3vram: Correct exchanged gotos in ps3vram_probe() error path
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 3c20e2f2793380add92dacce63395a8503b6c7c9 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: Use proc_create_data() instead of proc_create()
Use proc_create_data() to avoid race conditions.
Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 734957c89794971c874f9d3ccd9eb49dc3325f65 |
|
10-Jun-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3vram: Fix error path (return -EIO) for short read/write
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jim Paris <jim@jtan.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
| 99b76233803beab302123d243eea9e41149804f3 |
|
25-Mar-2009 |
Alexey Dobriyan <adobriyan@gmail.com> |
proc 2/2: remove struct proc_dir_entry::owner
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.
We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.
But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.
->read_proc/->write_proc were just fixed to not require ->owner for
protection.
rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.
Removing ->owner will also make PDE smaller.
So, let's nuke it.
Kudos to Jeff Layton for reminding about this, let's say, oversight.
http://bugzilla.kernel.org/show_bug.cgi?id=12454
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
|
| f507cd22035fdadd5dbb476dd05e9e7ee21c3b84 |
|
06-Mar-2009 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
ps3/block: Replace mtd/ps3vram by block/ps3vram
Convert the PS3 Video RAM Storage Driver from an MTD driver to a plain block
device driver.
The ps3vram driver exposes unused video RAM on the PS3 as a block device
suitable for storage or swap. Fast data transfer is achieved using a local
cache in system RAM and DMA transfers via the GPU.
The new driver is ca. 50% faster for reading, and ca. 10% for writing.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|