17 Oct, 2020
1 commit
-
Remove including that don't need it.
Signed-off-by: Tian Tao
Signed-off-by: Jens Axboe
24 Aug, 2020
1 commit
-
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva
24 Jun, 2020
1 commit
-
Move the call to blk_should_fake_timeout out of blk_mq_complete_request
and into the drivers, skipping call sites that are obvious error
handlers, and remove the now superflous blk_mq_force_complete_rq helper.
This ensures we don't keep injecting errors into completions that just
terminate the Linux request after the hardware has been reset or the
command has been aborted.Reviewed-by: Daniel Wagner
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
01 Jul, 2019
1 commit
-
Merge 5.2-rc6 into for-5.3/block, so we get the same page merge leak
fix. Otherwise we end up having conflicts with future patches between
for-5.3/block and master that touch this area. In particular, it makes
the bio_full() fix hard to backport to stable.* tag 'v5.2-rc6': (482 commits)
Linux 5.2-rc6
Revert "iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock"
Bluetooth: Fix regression with minimum encryption key size alignment
tcp: refine memory limit test in tcp_fragment()
x86/vdso: Prevent segfaults due to hoisted vclock reads
SUNRPC: Fix a credential refcount leak
Revert "SUNRPC: Declare RPC timers as TIMER_DEFERRABLE"
net :sunrpc :clnt :Fix xps refcount imbalance on the error path
NFS4: Only set creation opendata if O_CREAT
ARM: 8867/1: vdso: pass --be8 to linker if necessary
KVM: nVMX: reorganize initial steps of vmx_set_nested_state
KVM: PPC: Book3S HV: Invalidate ERAT when flushing guest TLB entries
habanalabs: use u64_to_user_ptr() for reading user pointers
nfsd: replace Jeff by Chuck as nfsd co-maintainer
inet: clear num_timeout reqsk_alloc()
PCI/P2PDMA: Ignore root complex whitelist when an IOMMU is present
net: mvpp2: debugfs: Add pmap to fs dump
ipv6: Default fib6_type to RTN_UNICAST when not set
net: hns3: Fix inconsistent indenting
net/af_iucv: always register net_device notifier
...
29 Jun, 2019
1 commit
-
In commit af7ddd8a627c
("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.Reviewed-by: Chaitanya Kulkarni
Signed-off-by: Fuqian Huang
Signed-off-by: Jens Axboe
19 Jun, 2019
1 commit
-
Based on 1 normalized pattern(s):
this file is part of the linux kernel and is made available under
the terms of the gnu general public license version 2extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 28 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Enrico Weigelt
Reviewed-by: Allison Randal
Reviewed-by: Kate Stewart
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.534229504@linutronix.de
Signed-off-by: Greg Kroah-Hartman
15 Feb, 2019
1 commit
-
QUEUE_FLAG_NO_SG_MERGE has been killed, so kill BLK_MQ_F_SG_MERGE too.
Reviewed-by: Christoph Hellwig
Reviewed-by: Omar Sandoval
Signed-off-by: Ming Lei
Signed-off-by: Jens Axboe
08 Jan, 2019
1 commit
-
We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.This change was generated with the following Coccinelle SmPL patch:
@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)Suggested-by: Christoph Hellwig
Signed-off-by: Luis Chamberlain
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig
10 Nov, 2018
1 commit
-
Add a retries field to the internal request structure instead, which gets
set to zero on the first submission.Reviewed-by: Hannes Reinecke
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
09 Nov, 2018
1 commit
-
We have this functionality in sbitmap, but we don't export it in
blk-mq for users of the tags busy iteration. This can be useful
for stopping the iteration, if the caller doesn't need to find
more requests.Reviewed-by: Mike Snitzer
Signed-off-by: Jens Axboe
26 Oct, 2018
1 commit
-
Check return values of dma_set_mask_and_coherent().
Otherwise, if dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
fails, the following piece of code will be executed even when the call
to dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); returns 0:dev_err(&pdev->dev, "DMA mask error %d\n", rc);
goto err_out_regions;Addresses-Coverity-ID: 1474553 ("Unchecked return value")
Fixes: 138126214868 ("skd: switch to the generic DMA API")
Reviewed-by: Christoph Hellwig
Signed-off-by: Gustavo A. R. Silva
Signed-off-by: Jens Axboe
19 Oct, 2018
1 commit
-
The PCI DMA API is deprecated, switch to the generic DMA API instead.
Also make use of the dma_set_mask_and_coherent helper to easily set
the streaming an coherent DMA masks together.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
15 Oct, 2018
1 commit
-
We need to be using the mq variant of request requeue here.
Fixes: ca33dd92968b ("skd: Convert to blk-mq")
Signed-off-by: Jens Axboe
28 Sep, 2018
1 commit
-
Update device_add_disk() to take an 'groups' argument so that
individual drivers can register a device with additional sysfs
attributes.
This avoids race condition the driver would otherwise have if these
groups were to be created with sysfs_add_groups().Signed-off-by: Martin Wilck
Signed-off-by: Hannes Reinecke
Reviewed-by: Christoph Hellwig
Reviewed-by: Bart Van Assche
Signed-off-by: Jens Axboe
13 Jul, 2018
1 commit
-
Use the existing %pad printk format to print dma_addr_t values.
This avoids the following warnings when compiling on the parisc64 platform:drivers/block/skd_main.c: In function 'skd_preop_sg_list':
drivers/block/skd_main.c:660:4: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 6 has type 'dma_addr_t {aka unsigned int}' [-Wformat=]Reviewed-by: Bart Van Assche
Signed-off-by: Helge Deller
Signed-off-by: Jens Axboe
09 Mar, 2018
1 commit
-
This patch has been generated as follows:
for verb in set_unlocked clear_unlocked set clear; do
replace-in-files queue_flag_${verb} blk_queue_flag_${verb%_unlocked} \
$(git grep -lw queue_flag_${verb} drivers block/bsg*)
doneExcept for protecting all queue flag changes with the queue lock
this patch does not change any functionality.Cc: Mike Snitzer
Cc: Shaohua Li
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Ming Lei
Signed-off-by: Bart Van Assche
Reviewed-by: Martin K. Petersen
Reviewed-by: Johannes Thumshirn
Acked-by: Martin K. Petersen
Signed-off-by: Jens Axboe
02 Feb, 2018
1 commit
-
skd includes slab_def.h to get access to the slab cache object size.
However, including this header breaks when we use SLUB or SLOB instead of
the SLAB allocator, since the structure layout is completely different,
as shown by this warning when we build this driver in one of the invalid
configurations with link-time optimizations enabled:include/linux/slab.h:715:0: error: type of 'kmem_cache_size' does not match original declaration [-Werror=lto-type-mismatch]
unsigned int kmem_cache_size(struct kmem_cache *s);mm/slab_common.c:77:14: note: 'kmem_cache_size' was previously declared here
unsigned int kmem_cache_size(struct kmem_cache *s)
^
mm/slab_common.c:77:14: note: code may be misoptimized unless -fno-strict-aliasing is used
include/linux/slab.h:147:0: error: type of 'kmem_cache_destroy' does not match original declaration [-Werror=lto-type-mismatch]
void kmem_cache_destroy(struct kmem_cache *);mm/slab_common.c:858:6: note: 'kmem_cache_destroy' was previously declared here
void kmem_cache_destroy(struct kmem_cache *s)
^
mm/slab_common.c:858:6: note: code may be misoptimized unless -fno-strict-aliasing is used
include/linux/slab.h:140:0: error: type of 'kmem_cache_create' does not match original declaration [-Werror=lto-type-mismatch]
struct kmem_cache *kmem_cache_create(const char *name, size_t size,mm/slab_common.c:534:1: note: 'kmem_cache_create' was previously declared here
kmem_cache_create(const char *name, size_t size, size_t align,
^This removes the header inclusion and instead uses the kmem_cache_size()
interface to get the size in a reliable way.Signed-off-by: Arnd Bergmann
Signed-off-by: Jens Axboe
22 Nov, 2017
1 commit
-
This converts all remaining cases of the old setup_timer() API into using
timer_setup(), where the callback argument is the structure already
holding the struct timer_list. These should have no behavioral changes,
since they just change which pointer is passed into the callback with
the same available pointers after conversion. It handles the following
examples, in addition to some other variations.Casting from unsigned long:
void my_callback(unsigned long data)
{
struct something *ptr = (struct something *)data;
...
}
...
setup_timer(&ptr->my_timer, my_callback, ptr);and forced object casts:
void my_callback(struct something *ptr)
{
...
}
...
setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr);become:
void my_callback(struct timer_list *t)
{
struct something *ptr = from_timer(ptr, t, my_timer);
...
}
...
timer_setup(&ptr->my_timer, my_callback, 0);Direct function assignments:
void my_callback(unsigned long data)
{
struct something *ptr = (struct something *)data;
...
}
...
ptr->my_timer.function = my_callback;have a temporary cast added, along with converting the args:
void my_callback(struct timer_list *t)
{
struct something *ptr = from_timer(ptr, t, my_timer);
...
}
...
ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback;And finally, callbacks without a data assignment:
void my_callback(unsigned long data)
{
...
}
...
setup_timer(&ptr->my_timer, my_callback, 0);have their argument renamed to verify they're unused during conversion:
void my_callback(struct timer_list *unused)
{
...
}
...
timer_setup(&ptr->my_timer, my_callback, 0);The conversion is done with the following Coccinelle script:
spatch --very-quiet --all-includes --include-headers \
-I ./arch/x86/include -I ./arch/x86/include/generated \
-I ./include -I ./arch/x86/include/uapi \
-I ./arch/x86/include/generated/uapi -I ./include/uapi \
-I ./include/generated/uapi --include ./include/linux/kconfig.h \
--dir . \
--cocci-file ~/src/data/timer_setup.cocci@fix_address_of@
expression e;
@@setup_timer(
-&(e)
+&e
, ...)// Update any raw setup_timer() usages that have a NULL callback, but
// would otherwise match change_timer_function_usage, since the latter
// will update all function assignments done in the face of a NULL
// function initialization in setup_timer().
@change_timer_function_usage_NULL@
expression _E;
identifier _timer;
type _cast_data;
@@(
-setup_timer(&_E->_timer, NULL, _E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E->_timer, NULL, (_cast_data)_E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, &_E);
+timer_setup(&_E._timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, (_cast_data)&_E);
+timer_setup(&_E._timer, NULL, 0);
)@change_timer_function_usage@
expression _E;
identifier _timer;
struct timer_list _stl;
identifier _callback;
type _cast_func, _cast_data;
@@(
-setup_timer(&_E->_timer, _callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
_E->_timer@_stl.function = _callback;
|
_E->_timer@_stl.function = &_callback;
|
_E->_timer@_stl.function = (_cast_func)_callback;
|
_E->_timer@_stl.function = (_cast_func)&_callback;
|
_E._timer@_stl.function = _callback;
|
_E._timer@_stl.function = &_callback;
|
_E._timer@_stl.function = (_cast_func)_callback;
|
_E._timer@_stl.function = (_cast_func)&_callback;
)// callback(unsigned long arg)
@change_callback_handle_cast
depends on change_timer_function_usage@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
identifier _handle;
@@void _callback(
-_origtype _origarg
+struct timer_list *t
)
{
(
... when != _origarg
_handletype *_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
... when != _origarg
|
... when != _origarg
_handletype *_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
... when != _origarg
|
... when != _origarg
_handletype *_handle;
... when != _handle
_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
... when != _origarg
|
... when != _origarg
_handletype *_handle;
... when != _handle
_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
... when != _origarg
)
}// callback(unsigned long arg) without existing variable
@change_callback_handle_cast_no_arg
depends on change_timer_function_usage &&
!change_callback_handle_cast@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
@@void _callback(
-_origtype _origarg
+struct timer_list *t
)
{
+ _handletype *_origarg = from_timer(_origarg, t, _timer);
+
... when != _origarg
- (_handletype *)_origarg
+ _origarg
... when != _origarg
}// Avoid already converted callbacks.
@match_callback_converted
depends on change_timer_function_usage &&
!change_callback_handle_cast &&
!change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier t;
@@void _callback(struct timer_list *t)
{ ... }// callback(struct something *handle)
@change_callback_handle_arg
depends on change_timer_function_usage &&
!match_callback_converted &&
!change_callback_handle_cast &&
!change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
@@void _callback(
-_handletype *_handle
+struct timer_list *t
)
{
+ _handletype *_handle = from_timer(_handle, t, _timer);
...
}// If change_callback_handle_arg ran on an empty function, remove
// the added handler.
@unchange_callback_handle_arg
depends on change_timer_function_usage &&
change_callback_handle_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
identifier t;
@@void _callback(struct timer_list *t)
{
- _handletype *_handle = from_timer(_handle, t, _timer);
}// We only want to refactor the setup_timer() data argument if we've found
// the matching callback. This undoes changes in change_timer_function_usage.
@unchange_timer_function_usage
depends on change_timer_function_usage &&
!change_callback_handle_cast &&
!change_callback_handle_cast_no_arg &&
!change_callback_handle_arg@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type change_timer_function_usage._cast_data;
@@(
-timer_setup(&_E->_timer, _callback, 0);
+setup_timer(&_E->_timer, _callback, (_cast_data)_E);
|
-timer_setup(&_E._timer, _callback, 0);
+setup_timer(&_E._timer, _callback, (_cast_data)&_E);
)// If we fixed a callback from a .function assignment, fix the
// assignment cast now.
@change_timer_function_assignment
depends on change_timer_function_usage &&
(change_callback_handle_cast ||
change_callback_handle_cast_no_arg ||
change_callback_handle_arg)@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_func;
typedef TIMER_FUNC_TYPE;
@@(
_E->_timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
;
|
_E->_timer.function =
-&_callback
+(TIMER_FUNC_TYPE)_callback
;
|
_E->_timer.function =
-(_cast_func)_callback;
+(TIMER_FUNC_TYPE)_callback
;
|
_E->_timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
;
|
_E._timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
;
|
_E._timer.function =
-&_callback;
+(TIMER_FUNC_TYPE)_callback
;
|
_E._timer.function =
-(_cast_func)_callback
+(TIMER_FUNC_TYPE)_callback
;
|
_E._timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
;
)// Sometimes timer functions are called directly. Replace matched args.
@change_timer_function_calls
depends on change_timer_function_usage &&
(change_callback_handle_cast ||
change_callback_handle_cast_no_arg ||
change_callback_handle_arg)@
expression _E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_data;
@@_callback(
(
-(_cast_data)_E
+&_E->_timer
|
-(_cast_data)&_E
+&_E._timer
|
-_E
+&_E->_timer
)
)// If a timer has been configured without a data argument, it can be
// converted without regard to the callback argument, since it is unused.
@match_timer_function_unused_data@
expression _E;
identifier _timer;
identifier _callback;
@@(
-setup_timer(&_E->_timer, _callback, 0);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0L);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0UL);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0L);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0UL);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0L);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0UL);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0L);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0UL);
+timer_setup(_timer, _callback, 0);
)@change_callback_unused_data
depends on match_timer_function_unused_data@
identifier match_timer_function_unused_data._callback;
type _origtype;
identifier _origarg;
@@void _callback(
-_origtype _origarg
+struct timer_list *unused
)
{
... when != _origarg
}Signed-off-by: Kees Cook
15 Nov, 2017
1 commit
-
Pull core block layer updates from Jens Axboe:
"This is the main pull request for block storage for 4.15-rc1.Nothing out of the ordinary in here, and no API changes or anything
like that. Just various new features for drivers, core changes, etc.
In particular, this pull request contains:- A patch series from Bart, closing the whole on blk/scsi-mq queue
quescing.- A series from Christoph, building towards hidden gendisks (for
multipath) and ability to move bio chains around.- NVMe
- Support for native multipath for NVMe (Christoph).
- Userspace notifications for AENs (Keith).
- Command side-effects support (Keith).
- SGL support (Chaitanya Kulkarni)
- FC fixes and improvements (James Smart)
- Lots of fixes and tweaks (Various)- bcache
- New maintainer (Michael Lyle)
- Writeback control improvements (Michael)
- Various fixes (Coly, Elena, Eric, Liang, et al)- lightnvm updates, mostly centered around the pblk interface
(Javier, Hans, and Rakesh).- Removal of unused bio/bvec kmap atomic interfaces (me, Christoph)
- Writeback series that fix the much discussed hundreds of millions
of sync-all units. This goes all the way, as discussed previously
(me).- Fix for missing wakeup on writeback timer adjustments (Yafang
Shao).- Fix laptop mode on blk-mq (me).
- {mq,name} tupple lookup for IO schedulers, allowing us to have
alias names. This means you can use 'deadline' on both !mq and on
mq (where it's called mq-deadline). (me).- blktrace race fix, oopsing on sg load (me).
- blk-mq optimizations (me).
- Obscure waitqueue race fix for kyber (Omar).
- NBD fixes (Josef).
- Disable writeback throttling by default on bfq, like we do on cfq
(Luca Miccio).- Series from Ming that enable us to treat flush requests on blk-mq
like any other request. This is a really nice cleanup.- Series from Ming that improves merging on blk-mq with schedulers,
getting us closer to flipping the switch on scsi-mq again.- BFQ updates (Paolo).
- blk-mq atomic flags memory ordering fixes (Peter Z).
- Loop cgroup support (Shaohua).
- Lots of minor fixes from lots of different folks, both for core and
driver code"* 'for-4.15/block' of git://git.kernel.dk/linux-block: (294 commits)
nvme: fix visibility of "uuid" ns attribute
blk-mq: fixup some comment typos and lengths
ide: ide-atapi: fix compile error with defining macro DEBUG
blk-mq: improve tag waiting setup for non-shared tags
brd: remove unused brd_mutex
blk-mq: only run the hardware queue if IO is pending
block: avoid null pointer dereference on null disk
fs: guard_bio_eod() needs to consider partitions
xtensa/simdisk: fix compile error
nvme: expose subsys attribute to sysfs
nvme: create 'slaves' and 'holders' entries for hidden controllers
block: create 'slaves' and 'holders' entries for hidden gendisks
nvme: also expose the namespace identification sysfs files for mpath nodes
nvme: implement multipath access to nvme subsystems
nvme: track shared namespaces
nvme: introduce a nvme_ns_ids structure
nvme: track subsystems
block, nvme: Introduce blk_mq_req_flags_t
block, scsi: Make SCSI quiesce and resume work reliably
block: Add the QUEUE_FLAG_PREEMPT_ONLY request queue flag
...
02 Nov, 2017
1 commit
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Like many storage drivers, skd uses an unsigned 32-bit number for
interchanging the current time with the firmware. This will overflow in
y2106 and is otherwise safe.However, the get_seconds() function is generally considered deprecated
since the behavior is different between 32-bit and 64-bit architectures,
and using it may indicate a bigger problem.To annotate that we've thought about this, let's add a comment here
and migrate to the ktime_get_real_seconds() function that consistently
returns a 64-bit number.Signed-off-by: Arnd Bergmann
Signed-off-by: Jens Axboe
09 Oct, 2017
1 commit
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Use kmem_cache_free instead of kfree for freeing the memory previously
allocated with kmem_cache_zalloc/kmem_cache_alloc/kmem_cache_node.Signed-off-by: Himanshu Jha
Signed-off-by: Jens Axboe
29 Aug, 2017
2 commits
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Since blk_mq_init_queue() initializes .nr_requests to the tag set
size and since that value is a good default for the skd driver, do
not overwrite the value set by blk_mq_init_queue(). This change
doubles the default value of .nr_requests.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Since sTec s1120 devices support 64-bit DMA it is not necessary
to request data buffer bouncing. Hence remove the
blk_queue_bounce_limit() call.Suggested-by: Christoph Hellwig
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe
26 Aug, 2017
4 commits
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The SKD_ID_INCR flag in skd_request_context.id duplicates information
that is already available otherwise, e.g. through the block layer
request state and through skd_request_context.state. Hence remove
the code that manipulates this flag and also the flag itself.
Since skd_isr_completion_posted() only uses the lower bits of
skd_request_context.id as hardware tag, this patch does not change
the behavior of the skd driver. I'm referring to the following code:tag = req_id & SKD_ID_SLOT_AND_TABLE_MASK;
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Although it is easy to see that skdev->disk != NULL if skdev->queue
!= NULL, add a test for skdev->disk to avoid that smatch reports the
following warning:drivers/block/skd_main.c:3080 skd_free_disk()
error: we previously assumed 'disk' could be null (see line 3074)Reported-by: Dan Carpenter
Signed-off-by: Bart Van Assche
Cc: Dan Carpenter
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
It is not worth to keep the debug statements in skd_end_request().
Without debug statements that function only consists of two
statements. Hence inline skd_end_request().Suggested-by: Christoph Hellwig
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
The latter name follows more closely the function names used in
other blk-mq drivers.Suggested-by: Christoph Hellwig
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe
24 Aug, 2017
4 commits
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Since MSI support on some motherboards is unreliable, change the
default interrupt mode from MSI to MSI-X. This patch avoids that
the following message appears sporadially in the kernel logs of
my test setup:do_IRQ: 3.193 No irq handler for vector
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Avoid that normal request completion and the timeout handler can
run concurrently by calling blk_mq_complete_request() instead of
blk_mq_end_request() from skd_end_request(). Avoid that the block
layer can reuse a request while the firmware is still processing
it. Convert skd_softirq_done() to blk-mq. Pass the pointer to
skd_softirq_done() to the block layer core through
blk_mq_ops.complete instead of by calling blk_queue_softirq_done().
Pass the pointer to skd_timed_out() to the block layer core
through blk_mq_ops.timeout instead of by calling
blk_queue_timed_out(). The timeout handler has been tested as
follows:echo 1 > /sys/block/skd0/io-timeout-fail &&
(cd /sys/kernel/debug/fail_io_timeout &&
echo 100 > probability &&
echo N > task-filter &&
echo 1 > times)Fixes: commit a74d5b76fab9 ("skd: Switch to block layer timeout mechanism")
Reported-by: Christoph Hellwig
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
This patch does not change any functionality but makes the skd
driver code more similar to that of other blk-mq kernel drivers.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
This patch removes one debug statement but otherwise does not change
any functionality.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe
23 Aug, 2017
2 commits
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My initial impulse was to check for IS_ERR_OR_NULL() but when I looked
at this code a bit more closely, we should only need to check for
IS_ERR().The blk_mq_alloc_tag_set() returns negative error codes and zero on
success so we can just do an "if (rc) goto err_out;". It's better to
preserve the error code anyhow. The blk_mq_init_queue() returns error
pointers on failure, it never returns NULL. We can also remove the
"q = NULL;" at the start because that's no longer needed.Fixes: ca33dd92968b ("skd: Convert to blk-mq")
Signed-off-by: Dan Carpenter
Signed-off-by: Jens Axboe -
Someone got too agressive about removing initializations and
accidentally removed the "rc = 0;" which is required.Fixes: c830da8cbc7b ("skd: Remove superfluous initializations from skd_isr_completion_posted()")
Signed-off-by: Dan Carpenter
Signed-off-by: Jens Axboe
18 Aug, 2017
7 commits
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Remove the driver version information because this information
is not useful in an upstream kernel driver.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Bump the driver version. Remove the build ID because build IDs do
not make sense for an upstream kernel driver. Keep the driver
version in the module information but do not report it during every
load, unload or probe.Signed-off-by: Bart Van Assche
Signed-off-by: Jens Axboe -
Only take skdev->lock if necessary.
Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
This patch does not change any functionality but makes the code
more brief.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Every single coherent DMA memory buffer occupies at least one page.
Reduce memory usage by switching from coherent buffers to streaming
DMA for I/O requests (struct skd_fitmsg_context) and S/G-lists
(struct fit_sg_descriptor[]).Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Since skd_device.in_flight is only used to display the number of
in-flight requests in debug messages, remove that member and
introduce skd_in_flight(). That last function relies on the block
layer to determine the number of in flight requests.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe -
Remove the timeout slot variables and rely on the block layer to
detect request timeouts.Signed-off-by: Bart Van Assche
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Johannes Thumshirn
Signed-off-by: Jens Axboe