Oscar has noticed that we splat
WARNING: CPU: 0 PID: 64 at ./include/linux/gfp.h:467 vmemmap_alloc_block+0x4e/0xc9
[...]
CPU: 0 PID: 64 Comm: kworker/u4:1 Tainted: G W E 4.17.0-rc5-next-20180517-1-default+ #66
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Call Trace:
vmemmap_populate+0xf2/0x2ae
sparse_mem_map_populate+0x28/0x35
sparse_add_one_section+0x4c/0x187
__add_pages+0xe7/0x1a0
add_pages+0x16/0x70
add_memory_resource+0xa3/0x1d0
add_memory+0xe4/0x110
acpi_memory_device_add+0x134/0x2e0
acpi_bus_attach+0xd9/0x190
acpi_bus_scan+0x37/0x70
acpi_device_hotplug+0x389/0x4e0
acpi_hotplug_work_fn+0x1a/0x30
process_one_work+0x146/0x340
worker_thread+0x47/0x3e0
kthread+0xf5/0x130
ret_from_fork+0x35/0x40
when adding memory to a node that is currently offline.
The VM_WARN_ON is just too loud without a good reason. In this
particular case we are doing
alloc_pages_node(node, GFP_KERNEL|__GFP_RETRY_MAYFAIL|__GFP_NOWARN, order)
so we do not insist on allocating from the given node (it is more a
hint) so we can fall back to any other populated node and moreover we
explicitly ask to not warn for the allocation failure.
Soften the warning only to cases when somebody asks for the given node
explicitly by __GFP_THISNODE.
Link: http://lkml.kernel.org/r/20180523125555.30039-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Oscar Salvador <osalvador@techadventures.net>
Tested-by: Oscar Salvador <osalvador@techadventures.net>
Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oscar has reported:
: Due to an unfortunate setting with movablecore, memblocks containing bootmem
: memory (pages marked by get_page_bootmem()) ended up marked in zone_movable.
: So while trying to remove that memory, the system failed in do_migrate_range
: and __offline_pages never returned.
:
: This can be reproduced by running
: qemu-system-x86_64 -m 6G,slots=8,maxmem=8G -numa node,mem=4096M -numa node,mem=2048M
: and movablecore=4G kernel command line
:
: linux kernel: BIOS-provided physical RAM map:
: linux kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
: linux kernel: BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
: linux kernel: BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
: linux kernel: BIOS-e820: [mem 0x0000000000100000-0x00000000bffdffff] usable
: linux kernel: BIOS-e820: [mem 0x00000000bffe0000-0x00000000bfffffff] reserved
: linux kernel: BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
: linux kernel: BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
: linux kernel: BIOS-e820: [mem 0x0000000100000000-0x00000001bfffffff] usable
: linux kernel: NX (Execute Disable) protection: active
: linux kernel: SMBIOS 2.8 present.
: linux kernel: DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org
: linux kernel: Hypervisor detected: KVM
: linux kernel: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
: linux kernel: e820: remove [mem 0x000a0000-0x000fffff] usable
: linux kernel: last_pfn = 0x1c0000 max_arch_pfn = 0x400000000
:
: linux kernel: SRAT: PXM 0 -> APIC 0x00 -> Node 0
: linux kernel: SRAT: PXM 1 -> APIC 0x01 -> Node 1
: linux kernel: ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
: linux kernel: ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
: linux kernel: ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x13fffffff]
: linux kernel: ACPI: SRAT: Node 1 PXM 1 [mem 0x140000000-0x1bfffffff]
: linux kernel: ACPI: SRAT: Node 0 PXM 0 [mem 0x1c0000000-0x43fffffff] hotplug
: linux kernel: NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x0
: linux kernel: NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x13fffffff] -> [mem 0
: linux kernel: NODE_DATA(0) allocated [mem 0x13ffd6000-0x13fffffff]
: linux kernel: NODE_DATA(1) allocated [mem 0x1bffd3000-0x1bfffcfff]
:
: zoneinfo shows that the zone movable is placed into both numa nodes:
: Node 0, zone Movable
: pages free 160140
: min 1823
: low 2278
: high 2733
: spanned 262144
: present 262144
: managed 245670
: Node 1, zone Movable
: pages free 448427
: min 3827
: low 4783
: high 5739
: spanned 524288
: present 524288
: managed 515766
Note how only Node 0 has a hutplugable memory region which would rule it
out from the early memblock allocations (most likely memmap). Node1
will surely contain memmaps on the same node and those would prevent
offlining to succeed. So this is arguably a configuration issue.
Although one could argue that we should be more clever and rule early
allocations from the zone movable. This would be correct but probably
not worth the effort considering what a hack movablecore is.
Anyway, We could do better for those cases though. We rely on
start_isolate_page_range resp. has_unmovable_pages to do their job.
The first one isolates the whole range to be offlined so that we do not
allocate from it anymore and the later makes sure we are not stumbling
over non-migrateable pages.
has_unmovable_pages is overly optimistic, however. It doesn't check all
the pages if we are withing zone_movable because we rely that those
pages will be always migrateable. As it turns out we are still not
perfect there. While bootmem pages in zonemovable sound like a clear
bug which should be fixed let's remove the optimization for now and warn
if we encounter unmovable pages in zone_movable in the meantime. That
should help for now at least.
Btw. this wasn't a real problem until commit 72b39cfc4d ("mm,
memory_hotplug: do not fail offlining too early") because we used to
have a small number of retries and then failed. This turned out to be
too fragile though.
Link: http://lkml.kernel.org/r/20180523125555.30039-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Oscar Salvador <osalvador@techadventures.net>
Tested-by: Oscar Salvador <osalvador@techadventures.net>
Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KASAN uses different routines to map shadow for hot added memory and
memory obtained in boot process. Attempt to offline memory onlined by
normal boot process leads to this:
Trying to vfree() nonexistent vm area (000000005d3b34b9)
WARNING: CPU: 2 PID: 13215 at mm/vmalloc.c:1525 __vunmap+0x147/0x190
Call Trace:
kasan_mem_notifier+0xad/0xb9
notifier_call_chain+0x166/0x260
__blocking_notifier_call_chain+0xdb/0x140
__offline_pages+0x96a/0xb10
memory_subsys_offline+0x76/0xc0
device_offline+0xb8/0x120
store_mem_state+0xfa/0x120
kernfs_fop_write+0x1d5/0x320
__vfs_write+0xd4/0x530
vfs_write+0x105/0x340
SyS_write+0xb0/0x140
Obviously we can't call vfree() to free memory that wasn't allocated via
vmalloc(). Use find_vm_area() to see if we can call vfree().
Unfortunately it's a bit tricky to properly unmap and free shadow
allocated during boot, so we'll have to keep it. If memory will come
online again that shadow will be reused.
Matthew asked: how can you call vfree() on something that isn't a
vmalloc address?
vfree() is able to free any address returned by
__vmalloc_node_range(). And __vmalloc_node_range() gives you any
address you ask. It doesn't have to be an address in [VMALLOC_START,
VMALLOC_END] range.
That's also how the module_alloc()/module_memfree() works on
architectures that have designated area for modules.
[aryabinin@virtuozzo.com: improve comments]
Link: http://lkml.kernel.org/r/dabee6ab-3a7a-51cd-3b86-5468718e0390@virtuozzo.com
[akpm@linux-foundation.org: fix typos, reflow comment]
Link: http://lkml.kernel.org/r/20180201163349.8700-1-aryabinin@virtuozzo.com
Fixes: fa69b5989b ("mm/kasan: add support for memory hotplug")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reported-by: Paul Menzel <pmenzel+linux-kasan-dev@molgen.mpg.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The current hugetlbfs maintainer has not been active for more than a few
years. I have been been active in this area for more than two years and
plan to remain active in the foreseeable future.
Also, update the hugetlbfs entry to include linux-mm mail list and
additional hugetlbfs related files. hugetlb.c and hugetlb.h are not
100% hugetlbfs, but a majority of their content is hugetlbfs related.
Link: http://lkml.kernel.org/r/20180518225236.19079-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Nadia Yvette Chambers <nyc@holomorphy.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
shmat()'s SHM_REMAP option forbids passing a nil address for; this is in
fact the very first thing we check for. Andrea reported that for
SHM_RND|SHM_REMAP cases we can end up bypassing the initial addr check,
but we need to check again if the address was rounded down to nil. As
of this patch, such cases will return -EINVAL.
Link: http://lkml.kernel.org/r/20180503204934.kk63josdu6u53fbd@linux-n805
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "ipc/shm: shmat() fixes around nil-page".
These patches fix two issues reported[1] a while back by Joe and Andrea
around how shmat(2) behaves with nil-page.
The first reverts a commit that it was incorrectly thought that mapping
nil-page (address=0) was a no no with MAP_FIXED. This is not the case,
with the exception of SHM_REMAP; which is address in the second patch.
I chose two patches because it is easier to backport and it explicitly
reverts bogus behaviour. Both patches ought to be in -stable and ltp
testcases need updated (the added testcase around the cve can be
modified to just test for SHM_RND|SHM_REMAP).
[1] lkml.kernel.org/r/20180430172152.nfa564pvgpk3ut7p@linux-n805
This patch (of 2):
Commit 95e91b831f ("ipc/shm: Fix shmat mmap nil-page protection")
worked on the idea that we should not be mapping as root addr=0 and
MAP_FIXED. However, it was reported that this scenario is in fact
valid, thus making the patch both bogus and breaks userspace as well.
For example X11's libint10.so relies on shmat(1, SHM_RND) for lowmem
initialization[1].
[1] https://cgit.freedesktop.org/xorg/xserver/tree/hw/xfree86/os-support/linux/int10/linux.c#n347
Link: http://lkml.kernel.org/r/20180503203243.15045-2-dave@stgolabs.net
Fixes: 95e91b831f ("ipc/shm: Fix shmat mmap nil-page protection")
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reported-by: Joe Lawrence <joe.lawrence@redhat.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the radix tree underlying the IDR happens to be full and we attempt
to remove an id which is larger than any id in the IDR, we will call
__radix_tree_delete() with an uninitialised 'slot' pointer, at which
point anything could happen. This was easiest to hit with a single
entry at id 0 and attempting to remove a non-0 id, but it could have
happened with 64 entries and attempting to remove an id >= 64.
Roman said:
The syzcaller test boils down to opening /dev/kvm, creating an
eventfd, and calling a couple of KVM ioctls. None of this requires
superuser. And the result is dereferencing an uninitialized pointer
which is likely a crash. The specific path caught by syzbot is via
KVM_HYPERV_EVENTD ioctl which is new in 4.17. But I guess there are
other user-triggerable paths, so cc:stable is probably justified.
Matthew added:
We have around 250 calls to idr_remove() in the kernel today. Many of
them pass an ID which is embedded in the object they're removing, so
they're safe. Picking a few likely candidates:
drivers/firewire/core-cdev.c looks unsafe; the ID comes from an ioctl.
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c is similar
drivers/atm/nicstar.c could be taken down by a handcrafted packet
Link: http://lkml.kernel.org/r/20180518175025.GD6361@bombadil.infradead.org
Fixes: 0a835c4f09 ("Reimplement IDR and IDA using the radix tree")
Reported-by: <syzbot+35666cba7f0a337e2e79@syzkaller.appspotmail.com>
Debugged-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If swapon() fails after incrementing nr_rotate_swap, we don't decrement
it and thus effectively leak it. Make sure we decrement it if we
incremented it.
Link: http://lkml.kernel.org/r/b6fe6b879f17fa68eee6cbd876f459f6e5e33495.1526491581.git.osandov@fb.com
Fixes: 81a0298bdf ("mm, swap: don't use VMA based swap readahead if HDD is used as swap")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
These two functions now trigger a warning when CONFIG_PROC_FS is disabled:
fs/xfs/xfs_stats.c:128:12: error: 'xqmstat_proc_show' defined but not used [-Werror=unused-function]
static int xqmstat_proc_show(struct seq_file *m, void *v)
^~~~~~~~~~~~~~~~~
fs/xfs/xfs_stats.c:118:12: error: 'xqm_proc_show' defined but not used [-Werror=unused-function]
static int xqm_proc_show(struct seq_file *m, void *v)
^~~~~~~~~~~~~
Previously, they were referenced from an unused 'static const' structure,
which is silently dropped by gcc.
We can address the warning by adding the same #ifdef around them that
hides the reference.
Fixes: 3f3942aca6 ("proc: introduce proc_create_single{,_data}")
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Move all RQ, SQ and channel counters from the channel objects into the
priv structure. With this change, counters will not be reset upon
channel configuration changes.
Channel's statistics for SQs which are associated with TCs higher than
zero will be presented in ethtool -S, only for SQs which were opened at
least once since the module was loaded (regardless of their open/close
current status). This is done in order to decrease the total amount of
statistics presented and calculated for the common out of box use (no
QoS).
mlx5e_channel_stats is a compound of CH,RQ,SQs stats in order to
create locality for the NAPI when handling TX and RX of the same
channel.
Align the new statistics struct per ring to avoid several channels
update to the same cache line at the same time.
Packet rate was tested, no degradation sensed.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
CC: Qing Huang <qing.huang@oracle.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
We are now able to configure a pipeline directly into a local display
list body. Take advantage of this fact, and create a cacheable body to
store the configuration of the pipeline in the pipeline object.
vsp1_video_pipeline_run() is now the last user of the pipe->dl object.
Convert this function to use the cached pipe->stream_config body and
obtain a local display list reference.
Attach the pipe->stream_config body to the display list when needed
before committing to hardware.
Use a flag 'configured' to know when we should attach our stream_config
to the next outgoing display list to reconfigure the hardware in the
event of our first frame, or the first frame following a suspend/resume
cycle.
Our video DL usage now looks like the below output:
dl->body0 contains our disposable runtime configuration. Max 41.
dl_child->body0 is our partition specific configuration. Max 12.
dl->bodies shows our constant configuration and LUTs.
These two are LUT/CLU:
* dl->bodies[x]->num_entries 256 / max 256
* dl->bodies[x]->num_entries 4914 / max 4914
Which shows that our 'constant' configuration cache is currently
utilised to a maximum of 64 entries.
trace-cmd report | \
dl->body0->num_entries 13 / max 128
dl->body0->num_entries 14 / max 128
dl->body0->num_entries 16 / max 128
dl->body0->num_entries 20 / max 128
dl->body0->num_entries 27 / max 128
dl->body0->num_entries 34 / max 128
dl->body0->num_entries 41 / max 128
dl_child->body0->num_entries 10 / max 128
dl_child->body0->num_entries 12 / max 128
dl->bodies[x]->num_entries 15 / max 128
dl->bodies[x]->num_entries 16 / max 128
dl->bodies[x]->num_entries 17 / max 128
dl->bodies[x]->num_entries 18 / max 128
dl->bodies[x]->num_entries 20 / max 128
dl->bodies[x]->num_entries 21 / max 128
dl->bodies[x]->num_entries 256 / max 256
dl->bodies[x]->num_entries 31 / max 128
dl->bodies[x]->num_entries 32 / max 128
dl->bodies[x]->num_entries 39 / max 128
dl->bodies[x]->num_entries 40 / max 128
dl->bodies[x]->num_entries 47 / max 128
dl->bodies[x]->num_entries 48 / max 128
dl->bodies[x]->num_entries 4914 / max 4914
dl->bodies[x]->num_entries 55 / max 128
dl->bodies[x]->num_entries 56 / max 128
dl->bodies[x]->num_entries 63 / max 128
dl->bodies[x]->num_entries 64 / max 128
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Currently the entities store their configurations into a display list.
Adapt this such that the code can be configured into a body directly,
allowing greater flexibility and control of the content.
All users of vsp1_dl_list_write() are removed in this process, thus it
too is removed.
A helper, vsp1_dl_list_get_body0() is provided to access the internal body0
from the display list.
[laurent.pinchart+renesas@ideasonboard.com: Don't remove blank line unnecessarily]
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The entities provide a single .configure operation which configures the
object into the target display list, based on the vsp1_entity_params
selection.
Split the configure function into three parts, '.configure_stream()',
'.configure_frame()', and '.configure_partition()' to facilitate
splitting the configuration of each parameter class into separate
display list bodies.
[laurent.pinchart+renesas@ideasonboard.com: Blank line reformatting, remote unneeded local variable initialization]
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Extend the display list body with a reference count, allowing bodies to
be kept as long as a reference is maintained. This provides the ability
to keep a cached copy of bodies which will not change, so that they can
be re-applied to multiple display lists.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Adapt the dl->body0 object to use an object from the body pool. This
greatly reduces the pressure on the TLB for IPMMU use cases, as all of
the lists use a single allocation for the main body.
The CLU and LUT objects pre-allocate a pool containing three bodies,
allowing a userspace update before the hardware has committed a previous
set of tables.
Bodies are no longer 'freed' in interrupt context, but instead released
back to their respective pools. This allows us to remove the garbage
collector in the DLM.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Each display list allocates a body to store register values in a dma
accessible buffer from a dma_alloc_wc() allocation. Each of these
results in an entry in the IOMMU TLB, and a large number of display list
allocations adds pressure to this resource.
Reduce TLB pressure on the IPMMUs by allocating multiple display list
bodies in a single allocation, and providing these to the display list
through a 'body pool'. A pool can be allocated by the display list
manager or entities which require their own body allocations.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The body write function relies on the code never asking it to write more
than the entries available in the list.
Currently with each list body containing 256 entries, this is fine, but
we can reduce this number greatly saving memory. In preparation of this
add a level of protection to catch any buffer overflows.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Throughout the codebase, the term 'fragment' is used to represent a
display list body. This term duplicates the 'body' which is already in
use.
The datasheet references these objects as a body, therefore replace all
mentions of a fragment with a body, along with the corresponding
pluralised terms.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The suspend and resume handlers are only utilised by video pipelines,
yet the functions currently reside in the vsp1_pipe object.
This causes an issue with resume, as the functions incorrectly call
vsp1_pipeline_run() directly instead of processing the video object
through vsp1_video_pipeline_run().
Move the functions to the video object, renaming accordingly and update
the resume handler to call vsp1_video_pipeline_run() as appropriate.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Commit 372b2b0399 ("media: v4l: vsp1: Release buffers in
start_streaming error path") introduced a helper to clean up buffers on
error paths, but inadvertently changed the code such that only the
output WPF buffers were cleaned, rather than the video node being
operated on.
Since then vsp1_video_cleanup_pipeline() has grown to perform both video
node cleanup, as well as pipeline cleanup. Split the implementation into
two distinct functions that perform the required work, so that each
video node can release its buffers correctly on streamoff. The pipe
cleanup that was performed in the vsp1_video_stop_streaming() (releasing
the pipe->dl) is moved to the function for clarity.
Fixes: 372b2b0399 ("media: v4l: vsp1: Release buffers in start_streaming error path")
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
The CEC receive buffer was not always cleared correctly. The
datasheet was a bit confusing since sometimes it mentioned that the
bit in CEC register 0x4a had to be toggled, and sometimes it suggested
it was a 'Clear-on-write' bit. But it really needs to be toggled.
The patch also enables/disables the CEC irqs after the other irq are
enabled/disabled instead of doing it before. It may not matter, but it
feels more logical to do it in that order, and the implementation that
we (Cisco) have used until now and that is known to be reliable also
did it in that order.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Subsequent patches in the series convert inode timestamps
to use struct timespec64 instead of struct timespec as
part of solving the y2038 problem.
commit fd3cfad374 ("udf: Convert udf_disk_stamp_to_time() to use mktime64()")
eliminated the NULL return condition from udf_disk_stamp_to_time().
udf_time_to_disk_time() is always called with a valid dest pointer and
the return value is ignored.
Further, caller can as well check the dest pointer being passed in rather
than return argument.
Make both the functions return void.
This will make the inode timestamp conversion simpler.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: jack@suse.com
----
Changes from v1:
* fixed the pointer error pointed by Jan
Subsequent patches in the series convert inode timestamps
to use struct timespec64 instead of struct timespec as
part of solving the y2038 problem.
This will lead to type mismatch for memcpys.
Use regular assignments instead.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: trond.myklebust@primarydata.com
Subsequent patches in the series convert inode timestamps
to use struct timespec64 instead of struct timespec as
part of solving the y2038 problem.
Convert these print formats to use long long types to
avoid warnings and errors on conversion.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: zyan@redhat.com
Cc: ceph-devel@vger.kernel.org
Subsequent patches in the series convert inode timestamps
to use struct timespec64 instead of struct timespec as
part of solving the y2038 problem.
Convert these print formats to use long long types to
avoid warnings and errors on conversion.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
CC: andreas.dilger@intel.com
As vfs moves to using struct timespec64 to represent times,
update the argument to timespec_truncate() to use
struct timespec64. Also change the name of the function.
The rest of the implementation logic is the same.
Move this to fs/inode.c instead of kernel/time/time.c as all the
users of this api are filesystems.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: <viro@zeniv.linux.org.uk>
In some cases pcie_get_minimum_link() returned misleading information
because it found the slowest link and the narrowest link without
considering the total bandwidth of the link.
For example, consider a path with these two links:
- 16.0 GT/s x1 link (16.0 * 10^9 * 128 / 130) * 1 / 8 = 1969 MB/s
- 2.5 GT/s x16 link ( 2.5 * 10^9 * 8 / 10) * 16 / 8 = 4000 MB/s
The available bandwidth of the path is limited by the 16 GT/s link to about
1969 MB/s, but pcie_get_minimum_link() returned 2.5 GT/s x1, which
corresponds to only 250 MB/s.
Callers should use pcie_print_link_status() instead, or
pcie_bandwidth_available() if they need more detailed information.
Remove pcie_get_minimum_link() since there are no callers left.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Previously the driver used pcie_get_minimum_link() to warn when the NIC
is in a slot that can't supply as much bandwidth as the NIC could use.
pcie_get_minimum_link() can be misleading because it finds the slowest link
and the narrowest link (which may be different links) without considering
the total bandwidth of each link. For a path with a 16 GT/s x1 link and a
2.5 GT/s x16 link, it returns 2.5 GT/s x1, which corresponds to 250 MB/s of
bandwidth, not the true available bandwidth of about 1969 MB/s for a
16 GT/s x1 link.
Use pcie_print_link_status() to report PCIe link speed and possible
limitations instead of implementing this in the driver itself. This finds
the slowest link in the path to the device by computing the total bandwidth
of each link and compares that with the capabilities of the device.
The dmesg change is:
- PCI Express bandwidth of %dGT/s available
- (Speed:%s, Width: x%d, Encoding Loss:%s)
+ %u.%03u Gb/s available PCIe bandwidth (%s x%d link)
or, if the device is capable of better performance than is available in the
current slot:
- This is not sufficient for optimal performance of this card.
- For optimal performance, at least %dGT/s of bandwidth is required.
- A slot with more lanes and/or higher speed is suggested.
+ %u.%03u Gb/s available PCIe bandwidth, limited by %s x%d link at %s (capable of %u.%03u Gb/s with %s x%d link)
Note that the driver previously used dev_warn() to suggest using a
different slot, but pcie_print_link_status() uses dev_info() because if the
platform has no faster slot available, the user can't do anything about the
warning and may not want to be bothered with it.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Previously the driver used pcie_get_minimum_link() to warn when the NIC
is in a slot that can't supply as much bandwidth as the NIC could use.
pcie_get_minimum_link() can be misleading because it finds the slowest link
and the narrowest link (which may be different links) without considering
the total bandwidth of each link. For a path with a 16 GT/s x1 link and a
2.5 GT/s x16 link, it returns 2.5 GT/s x1, which corresponds to 250 MB/s of
bandwidth, not the true available bandwidth of about 1969 MB/s for a
16 GT/s x1 link.
Use pcie_print_link_status() to report PCIe link speed and possible
limitations instead of implementing this in the driver itself. This finds
the slowest link in the path to the device by computing the total bandwidth
of each link and compares that with the capabilities of the device.
The dmesg change is:
- PCIe link speed is %s, device supports %s
- PCIe link width is x%d, device supports x%d
+ %u.%03u Gb/s available PCIe bandwidth (%s x%d link)
or, if the device is capable of better performance than is available in the
current slot:
- A slot with more lanes and/or higher speed is suggested for optimal performance.
+ %u.%03u Gb/s available PCIe bandwidth, limited by %s x%d link at %s (capable of %u.%03u Gb/s with %s x%d link)
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Previously the driver used pcie_get_minimum_link() to warn when the NIC
is in a slot that can't supply as much bandwidth as the NIC could use.
pcie_get_minimum_link() can be misleading because it finds the slowest link
and the narrowest link (which may be different links) without considering
the total bandwidth of each link. For a path with a 16 GT/s x1 link and a
2.5 GT/s x16 link, it returns 2.5 GT/s x1, which corresponds to 250 MB/s of
bandwidth, not the true available bandwidth of about 1969 MB/s for a
16 GT/s x1 link.
Use pcie_print_link_status() to report PCIe link speed and possible
limitations instead of implementing this in the driver itself. This finds
the slowest link in the path to the device by computing the total bandwidth
of each link and compares that with the capabilities of the device.
The dmesg change is:
- PCIe: Speed %s Width x%d
+ %u.%03u Gb/s available PCIe bandwidth (%s x%d link)
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Previously the driver used pcie_get_minimum_link() to warn when the NIC
is in a slot that can't supply as much bandwidth as the NIC could use.
pcie_get_minimum_link() can be misleading because it finds the slowest link
and the narrowest link (which may be different links) without considering
the total bandwidth of each link. For a path with a 16 GT/s x1 link and a
2.5 GT/s x16 link, it returns 2.5 GT/s x1, which corresponds to 250 MB/s of
bandwidth, not the true available bandwidth of about 1969 MB/s for a
16 GT/s x1 link.
Use pcie_print_link_status() to report PCIe link speed and possible
limitations instead of implementing this in the driver itself. This finds
the slowest link in the path to the device by computing the total bandwidth
of each link and compares that with the capabilities of the device.
The dmesg change is:
- %s (%c%d) PCI-E x%d %s found at mem %lx, IRQ %d, node addr %pM
+ %s (%c%d) PCI-E found at mem %lx, IRQ %d, node addr %pM
+ %u.%03u Gb/s available PCIe bandwidth (%s x%d link)
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Add the rtc enable clock for watchdog controller to make it work well.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This patch adds device nodes to enable one GPIO controller located on
digital chip, 2 EIC (external interrupt controller) controllers loacted
on PMIC and digital chip for Spreadtrum SC9860 platform.
Moreover this patch adds 3 GPIO keys relied on EIC controller to support
power key and volume up/down keys.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Manipulating the enable_cnt behind the back of the driver will wreak
complete havoc with the kernel state, so disallow it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Keith Busch <keith.busch@intel.com>
- Enable the support of ethernet, eMMC, Combo/INNO phy
and PCIe for Hi3798CV200
- Enable the LPC for hip06 and hip07
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Merge tag 'hisi-defconfig-for-4.18v3' of git://github.com/hisilicon/linux-hisi into next/defconfig
ARM64: hisilicon: defconfig updates for 4.18
- Enable the support of ethernet, eMMC, Combo/INNO phy
and PCIe for Hi3798CV200
- Enable the LPC for hip06 and hip07
* tag 'hisi-defconfig-for-4.18v3' of git://github.com/hisilicon/linux-hisi:
arm64: defconfig: Enable HISILICON_LPC
arm64: defconfig: enable drivers for Poplar support
Signed-off-by: Olof Johansson <olof@lixom.net>
The patch that enabled these had no useful changelog that explains
why it is done, and it causes a build warning:
WARNING: unmet direct dependencies detected for STM32_DMA
Depends on [n]: DMADEVICES [=n] && (ARCH_STM32 [=y] || COMPILE_TEST [=y])
Selected by [y]:
- MACH_STM32MP157 [=y] && ARCH_STM32 [=y] && ARCH_MULTI_V7 [=y]
Generally, platforms should not select arbitrary drivers, so let's
just revert that change.
Fixes: de6037fa20 ("ARM: stm32: Select DMA, DMAMUX and MDMA support on STM32MP157C")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
This series contains two omap1 ams-delta GPIO clean-up patches to get
started with removal of hard-coded GPIO numbers from drivers. And then
the removal of board mach includes from drivers. The second patch mostly
touches the ams-delta audio driver but is included here because of the
removal of the latch gpios and is acked by Mark Brown.
And there are two more am437x related PM patches to save and restore
control module and timer registers for RTC only suspend mode. Looks like
the patch title for the timer changes is a bit misleading, not all the
timer code is yet living under drivers/clocksource. But I had already
pushed out the branch before I noticed this.
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Merge tag 'omap-for-v4.18/soc-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
Late omap soc changes for v4.18 merge window
This series contains two omap1 ams-delta GPIO clean-up patches to get
started with removal of hard-coded GPIO numbers from drivers. And then
the removal of board mach includes from drivers. The second patch mostly
touches the ams-delta audio driver but is included here because of the
removal of the latch gpios and is acked by Mark Brown.
And there are two more am437x related PM patches to save and restore
control module and timer registers for RTC only suspend mode. Looks like
the patch title for the timer changes is a bit misleading, not all the
timer code is yet living under drivers/clocksource. But I had already
pushed out the branch before I noticed this.
* tag 'omap-for-v4.18/soc-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
OMAP: CLK: CLKSRC: Add suspend resume hooks
ARM: AM43XX: Add functions to save/restore am43xx control registers
ASoC: ams_delta: use GPIO lookup table
ARM: OMAP1: ams-delta: add GPIO lookup tables
Signed-off-by: Olof Johansson <olof@lixom.net>
New hardware support added:
USB controllers for AST2400 and AST2500 which have drivers
merged in 4.18.
Hardware random number generator which we made enhancements to many
releases ago, but never added the device tree parts.
Misc changes to support watchdog and gpio-keys features used by
OpenBMC systems.
New machines:
Intel S2600WF, an Intel platform family with an ASPEED AST2500 BMC.
Inventec Lanyang, a Power 9 platform with AST2500.
Portwell Neptune, a x86 server development kit with an AST2500.
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Merge tag 'aspeed-4.18-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed into next/dt
ASPEED device tree updates for 4.18
New hardware support added:
USB controllers for AST2400 and AST2500 which have drivers
merged in 4.18.
Hardware random number generator which we made enhancements to many
releases ago, but never added the device tree parts.
Misc changes to support watchdog and gpio-keys features used by
OpenBMC systems.
New machines:
Intel S2600WF, an Intel platform family with an ASPEED AST2500 BMC.
Inventec Lanyang, a Power 9 platform with AST2500.
Portwell Neptune, a x86 server development kit with an AST2500.
* tag 'aspeed-4.18-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed:
ARM: dts: Aspeed: Enable USB ports on eval board.
ARM: dts: Add Aspeed SoC USB controllers to device-tree
ARM: dts: aspeed: Add S2600WF BMC Machine
ARM: dts: aspeed: Add Inventec Lanyang BMC
ARM: dts: aspeed: Add Portwell Neptune machine
ARM: dts: aspeed: witherspoon: Set alternate boot
ARM: dts: aspeed: witherspoon: Add gpio keys for power supply presence
ARM: dts: aspeed: witherspoon: Enable checkstop and cooling gpio keys
ARM: dts: aspeed: zaius: Add pcie-e2b-present gpio key
ARM: dts: aspeed: romulus: Add id-button gpio key
ARM: dts: aspeed: Describe random number device
Signed-off-by: Olof Johansson <olof@lixom.net>
dtc now warns on incomplete OF graph endpoint connections:
arch/arm64/boot/dts/sprd/sp9860g-1h10.dtb: Warning (graph_endpoint): /soc/stm@10006000/port/endpoint: graph connection to node '/soc/funnel@10001000/ports/port@2/endpoint' is not bidirectional
The cause is a typo in 'remote-endpoint'.
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Baolin Wang <baolin.wang@linaro.org>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Allwinner fixes for 4.17
Here is a bunch of fixes for merge issues, typos and wrong clocks being
described for simplefb, resulting in non-working displays.
* tag 'sunxi-fixes-for-4.17' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: sun8i: v3s: fix spelling mistake: "disbaled" -> "disabled"
ARM: dts: sun4i: Fix incorrect clocks for displays
ARM: dts: sun8i: h3: Re-enable EMAC on Orange Pi One
Signed-off-by: Olof Johansson <olof@lixom.net>
1. Add clocks necessary for DECON hardware windows no 4 and 5 on
Exynos5433.
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Merge tag 'samsung-dt64-4.18-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt
Samsung DTS ARM64 changes for v4.18, part 2
1. Add clocks necessary for DECON hardware windows no 4 and 5 on
Exynos5433.
* tag 'samsung-dt64-4.18-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: Add more clocks to Exynos5433 Decon/DeconTV
Signed-off-by: Olof Johansson <olof@lixom.net>
1. Add support for audio over HDMI for Odroid X/X2/U3.
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Merge tag 'samsung-dt-4.18-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt
Samsung DTS ARM changes for v4.18, part 2
1. Add support for audio over HDMI for Odroid X/X2/U3.
* tag 'samsung-dt-4.18-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: dts: exynos: Add support for audio over HDMI for Odroid X/X2/U3
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge tag 'v4.18-rockchip-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/drivers
Power-domain support for Rockchip socs px30, rk3128, rk3228 and rk3036.
* tag 'v4.18-rockchip-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
soc: rockchip: power-domain: add power domain support for px30
dt-bindings: power: add binding for px30 power domains
dt-bindings: power: add PX30 SoCs header for power-domain
soc: rockchip: power-domain: add power domain support for rk3228
dt-bindings: power: add binding for rk3228 power domains
dt-bindings: power: add RK3228 SoCs header for power-domain
soc: rockchip: power-domain: add power domain support for rk3128
dt-bindings: power: add binding for rk3128 power domains
dt-bindings: power: add RK3128 SoCs header for power-domain
soc: rockchip: power-domain: add power domain support for rk3036
dt-bindings: power: add binding for rk3036 power domains
dt-bindings: power: add RK3036 SoCs header for power-domain
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge tag 'berlin-dt-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jszhang/linux-berlin into next/dt
berlin DT changes for v4.18
* tag 'berlin-dt-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jszhang/linux-berlin:
ARM: dts: berlin2q: move PMU node from soc to root
ARM: dts: berlin*-dts: use SPDX-License-Identifier for berlin based board
ARM: dts: berlin*.dtsi: use SPDX-License-Identifier for berlin SoCs
ARM: dts: berlin2: fix irq type for arm twd timer
ARM: dts: berlin2q: fix irq type for arm twd timer
ARM: dts: berlin2q: add "cache-unified" to l2 node
ARM: dts: berlin2q: add interrupt-affinity to pmu node
ARM: dts: chromecast: use PWM for LEDs
ARM: dts: chromecast: override bad bootloader memory info
ARM: dts: berlin2cd: add Valve Steam Link board
ARM: dts: berlin2cd: add a label for the CPU node
ARM: dts: berlin2cd: add remaining nodes to apb subtrees
ARM: dts: berlin2cd: add remaining Cortex-A9 nodes
ARM: dts: berlin2cd: add ADC/thermal sensor node
ARM: dts: berlin2cd: move PMU node from soc to root
ARM: dts: berlin2cd: fix local timer interrupt flags
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge tag 'berlin64-dt-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jszhang/linux-berlin into next/dt
Berlin64 DT changes for v4.18
* tag 'berlin64-dt-for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jszhang/linux-berlin:
arm64: dts: move berlin SoC files from marvell dir to synaptics dir
arm64: dts: berlin4ct-*.dts: use SPDX-License-Identifier
arm64: dts: berlin4ct: use SPDX-License-Identifier
Signed-off-by: Olof Johansson <olof@lixom.net>
