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Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
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The function definition of get_irq_regs() is moved to asm header irq_regs.h.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
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Rename functions in include/net/ll_poll.h to busy wait.
Clarify documentation about expected power use increase.
Rename POLL_LL to POLL_BUSY_LOOP.
Add need_resched() testing to poll/select busy loops.
Note, that in select and poll can_busy_poll is dynamic and is
updated continuously to reflect the existence of supported
sockets with valid queue information.
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This should help make sure patches go to the correct list.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This fixes build for the vringh test:
[linux]$ make -C tools/virtio/
make: Entering directory `/home/mst/scm/linux/tools/virtio'
cc -g -O2 -Wall -I. -I ../../usr/include/ -Wno-pointer-sign
-fno-strict-overflow -fno-strict-aliasing -fno-common -MMD
-U_FORTIFY_SOURCE -c -o vringh.o ../../drivers/vhost/vringh.c
../../drivers/vhost/vringh.c:1010:16: error: expected declaration
specifiers or ‘...’ before string constant
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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virtio_ring.h uses mb() and friends, make
it pull in asm/barrier.h itself, not rely
on other headers to do it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Also known as the "no really, I read the spec" bit.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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into drm-next
A few more DPM fixes based on user testing.
* 'drm-next-3.11' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/dpm: implement vblank_too_short callback for si
drm/radeon/dpm: implement vblank_too_short callback for cayman
drm/radeon/dpm: implement vblank_too_short callback for btc
drm/radeon/dpm: implement vblank_too_short callback for evergreen
drm/radeon/dpm: implement vblank_too_short callback for 7xx
drm/radeon/dpm: add checks against vblank time
drm/radeon/dpm: add helper to calculate vblank time
drm/radeon: remove stray line in old pm code
drm/radeon/dpm: fix display_gap programming on rv7xx
drm/radeon/dpm: implement force performance level for TN
drm/radeon/dpm: implement force performance level for ON/LN
drm/radeon/dpm: implement force performance level for SI
drm/radeon/dpm: implement force performance level for cayman
drm/radeon/dpm: implement force performance levels for 7xx/eg/btc
drm/radeon/dpm: add infrastructure to force performance levels
drm/radeon: fix surface setup on r1xx
drm/radeon: add support for 3d perf states on older asics
drm/radeon: set default clocks for SI when DPM is disabled
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git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next
Two minor fixes for regressions.
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nvc0/gr: fix gpc firmware regression
drm/nouveau: fix minor thinko causing bo moves to not be async on kepler
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We now have minimal minorversion 1 support; turn it on by default.
This can still be turned off with "echo -4.1 >/proc/fs/nfsd/versions".
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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RFC 5661 allows a client to destroy a session using a compound
associated with the destroyed session, as long as the DESTROY_SESSION op
is the last op of the compound.
We attempt to allow this, but testing against a Solaris client (which
does destroy sessions in this way) showed that we were failing the
DESTROY_SESSION with NFS4ERR_DELAY, because we assumed the reference
count on the session (held by us) represented another rpc in progress
over this session.
Fix this by noting that in this case the expected reference count is 1,
not 0.
Also, note as long as the session holds a reference to the compound
we're destroying, we can't free it here--instead, delay the free till
the final put in nfs4svc_encode_compoundres.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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If the vblank time is too short to adjust mclk,
assume multiple displays (no mclk adjustments).
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Required for checking vblank time for mclk changes.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Looks like a remnant from an old rebase.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check the driver state rather than the register as the
crtc registers may not be enabled yet.
Should fix:
https://bugzilla.kernel.org/show_bug.cgi?id=60510
https://bugs.freedesktop.org/show_bug.cgi?id=66651
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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As of f025adf191924e3a75ce80e130afcd2485b53bb8 "sunrpc: Properly decode
kuids and kgids in RPC_AUTH_UNIX credentials" any rpc containing a -1
(0xffff) uid or gid would fail with a badcred error.
Commit afe3c3fd5392b2f0066930abc5dbd3f4b14a0f13 "svcrpc: fix failures to
handle -1 uid's and gid's" fixed part of the problem, but overlooked the
gid upcall--the kernel can request supplementary gid's for the -1 uid,
but mountd's attempt write a response will get -EINVAL.
Symptoms were nfsd failing to reply to the first attempt to use a newly
negotiated krb5 context.
Reported-by: Sven Geggus <lists@fuchsschwanzdomain.de>
Tested-by: Sven Geggus <lists@fuchsschwanzdomain.de>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Pointers in the efi_runtime_services_t structure now have type
"void *" (formerly they were "unsigned long"). So we now see a
bunch of warnings like this:
arch/ia64/hp/sim/boot/fw-emu.c:293: warning: assignment makes pointer from integer without a cast
Add (void *) casts to the 10 affected lines to make the build quiet again.
Signed-off-by: Tony Luck <tony.luck@intel.com>
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time_after (as opposed to time_after_equal) already ensures that the
cache lifetime is at least as much as requested. There is no point in
manually adding another jiffy to that value, and this can confuse the
reader into wrong interpretation.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Imre Deak <imre.deak@intel.com>
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time_after (as opposed to time_after_equal) already ensures that the
cache lifetime is at least as much as requested. There is no point in
manually adding another jiffy to that value, and this can confuse the
reader into wrong interpretation.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Imre Deak <imre.deak@intel.com>
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Fix to return -EINVAL from the option parse error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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file_lock_lock to an lglock
The file_lock_list is only used for /proc/locks. The vastly common case
is for locks to be put onto the list and come off again, without ever
being traversed.
Help optimize for this use-case by moving to percpu hlist_head-s. At the
same time, we can make the locking less contentious by moving to an
lglock. When iterating over the lists for /proc/locks, we must take the
global lock and then iterate over each CPU's list in turn.
This change necessitates a new fl_link_cpu field to keep track of which
CPU the entry is on. On x86_64 at least, this field is placed within an
existing hole in the struct to avoid growing the size.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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When we convert the file_lock_list to a set of percpu lists, we'll need
a way to iterate over them in order to output /proc/locks info. Add
some seq_list_*_percpu helpers to handle that.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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In the previous Al Viro's readdir patch set, there occurs a bug when
running
xfstest: 006 as follows.
[Error output]
alpha size = 4, name length = 6, total files = 4096, nproc=1
1023 files created
rm: cannot remove `/mnt/f2fs/permname.15150/a': Directory not empty
[Correct output]
alpha size = 4, name length = 6, total files = 4096, nproc=1
4097 files created
This bug is due to the misupdate of directory position in ctx.
So, this patch fixes this.
[AV: fixed a braino]
CC: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Add devicetree support for imx framebuffer driver. It uses the generic
display bindings and helper functions.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
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Delete the unused variable "err" in v9fs_vfs_getattr()
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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RDMA needs to post a buffer for each incoming reply.
Hence it needs to keep count of these and needs to be
aware of whether a flushed request has received a reply
or not.
This patch adds the cancelled() callback to the transport modules.
It is called when RFLUSH has been received and that the corresponding
request will never receive a reply.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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In rdma_request():
If an error occurs between posting the recv and the send,
there will be a reply context posted without a pending
request.
Since there is no way to "un-post" it, we remember it and
skip post_recv() for the next request.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Most importantly:
- do not free the recv context (rpl_context) after a successful post_recv()
- but do free the send context (c) after a failed send.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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rdma_request() should never be in charge of freeing rc.
When an error occurs:
* Either the rc buffer has been recv_post()'ed.
then kfree()'ing it certainly is a bad idea.
* Or is has not, and in that case req->rc still points to it,
hence it needs not be freed.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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The current code keeps track of the number of buffers posted in the RQ,
and will prevent it from overflowing. But it does so by simply dropping
post requests (And leaking memory in the process).
When this happens there will actually be too few buffers posted, and
soon the 9P server will complain about 'RNR retry counter exceeded'
errors.
Instead, use a semaphore, and block until the RQ is ready for another
buffer to be posted.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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A well-behaved server would not send twice the reply to a request.
But if it ever happens...
This additional check prevents the kernel from leaking memory
and possibly more nasty consequences in that unlikely event.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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The current value is too low to get good performance.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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p9_tag_alloc() takes care of that.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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The current code assumes that when a request in the request array
does have a tc, it also has a rc.
This is normally true, but not always : when using RDMA, req->rc
will temporarily be set to NULL after the request has been sent.
That is usually OK though, as when the reply arrives, req->rc will be
reassigned to a sane value before the request is recycled.
But there is a catch : if the request is flushed, the reply will never
arrive, and req->rc will be NULL, but not req->tc.
This patch fixes p9_tag_alloc to take this into account.
Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Allow requests for security.* and trusted.* xattr name spaces
to pass through to server.
The new files are 99% cut and paste from fs/9p/xattr_user.c with the
namespaces changed. It has the intended effect in superficial testing.
I do not know much detail about how these namespaces are used, but passing
them through to the server, which can decide whether to handle them or not,
seems reasonable.
I want to support a use case where an ext4 file system is mounted via 9P,
then re-exported via samba to windows clients in a cluster. Windows wants
to store xattrs such as security.NTACL. This works when ext4 directly
backs samba, but not when 9P is inserted. This use case is documented here:
http://code.google.com/p/diod/issues/detail?id=95
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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If the privport option is specified, the tcp transport binds local
address to a reserved port before connecting to the 9p server.
In some cases when 9P AUTH cannot be implemented, this is better than
nothing.
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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"drm/nve0-/gr: some new gpc registers can have multiple copies"
5ee86c4190f9e caused a regression for nvc0, because the bit indicating last
transfer has occured was no longer set, resulting in random system lockups.
Reported-by: Ronald Uitermark <ronald645@gmail.com>
Tested-by: Ronald Uitermark <ronald645@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Pull slave-dmaengine updates from Vinod Koul:
"Once you have some time from extended weekend celebrations please
consider pulling the following to get:
- Various fixes and PCI driver for dw_dmac by Andy
- DT binding for imx-dma by Markus & imx-sdma by Shawn
- DT fixes for dmaengine by Lars
- jz4740 dmac driver by Lars
- and various fixes across the drivers"
What "extended weekend celebrations"? I'm in the merge window, who has
time for extended celebrations..
* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (40 commits)
DMA: shdma: add DT support
DMA: shdma: shdma_chan_filter() has to be in shdma-base.h
DMA: shdma: (cosmetic) don't re-calculate a pointer
dmaengine: at_hdmac: prepare clk before calling enable
dmaengine/trivial: at_hdmac: add curly brackets to if/else expressions
dmaengine: at_hdmac: remove unsuded atc_cleanup_descriptors()
dmaengine: at_hdmac: add FIFO configuration parameter to DMA DT binding
ARM: at91: dt: add header to define at_hdmac configuration
MIPS: jz4740: Correct clock gate bit for DMA controller
MIPS: jz4740: Remove custom DMA API
MIPS: jz4740: Register jz4740 DMA device
dma: Add a jz4740 dmaengine driver
MIPS: jz4740: Acquire and enable DMA controller clock
dma: mmp_tdma: disable irq when disabling dma channel
dmaengine: PL08x: Avoid collisions with get_signal() macro
dmaengine: dw: select DW_DMAC_BIG_ENDIAN_IO automagically
dma: dw: add PCI part of the driver
dma: dw: split driver to library part and platform code
dma: move dw_dmac driver to an own directory
dw_dmac: don't check resource with devm_ioremap_resource
...
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git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
Pull first stage of __cpuinit removal from Paul Gortmaker:
"The two commits here 1) dummy out all the __cpuinit macros so that we
no longer generate such sections, and then 2) remove all the section
processing that we used to do for those sections.
This makes all the __cpuinit and friends no-ops, so that we can remove
the use cases of it at our leisure. Expect stage 2, which does the
tree wide removal sweep at the end of the merge window."
* 'cpuinit-delete' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
modpost: remove all traces of cpuinit/cpuexit sections
init.h: remove __cpuinit sections from the kernel
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We changed the type of dev.vqs field, update test
module accordingly.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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$ make C=1 M=drivers/vhost
drivers/vhost/net.c:168:5: warning: symbol 'vhost_net_set_ubuf_info' was not declared. Should it be static?
drivers/vhost/net.c:194:6: warning: symbol 'vhost_net_vq_reset' was not declared. Should it be static?
drivers/vhost/scsi.c:219:6: warning: symbol 'tcm_vhost_done_inflight' was not declared. Should it be static?
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Currently, vhost-net and vhost-scsi are sharing the vhost core code.
However, vhost-scsi shares the code by including the vhost.c file
directly.
Making vhost a separate module makes it is easier to share code with
other vhost devices.
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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This way, we use cmd for struct tcm_vhost_cmd and evt for struct
tcm_vhost_cmd.
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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