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HFI's counters SendWaitCnt and SendWaitVlCnt are in units
of TXE cycle time (at 805MHz). OPA counters PortXmitWait and
PortVLXmtWait are in units of flit times.
Convert the counter values to flit units using following
conversion formula:
PortXmitWait =
SendWaitCnt * 2 * (4 /link_width) * (25 Gbps /link_speed)
PortVLXmitWait =
SendWaitVLCnt * 2 * (4 /link_width) * (25 Gbps /link_speed)
At link up or downgrade events, the link width can change. To ensure
accurate counter calculations, sample the counters after the events,
during counter requests, and then aggregate the OPA counters.
Reviewed-by: Michael J. Ruhl <[email protected]>
Signed-off-by: Kamenee Arumugam <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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During PCIe Gen 3 transistion, pcie_pset is read and might be overridden
to a default value(i.e. 255) in do_pcie_gen3_transition() routine.
If the pcie_pset value is overridden then this new value will be used
during initialization of next adapter on a different card.
Introducing a new local variable to avoid modification of pcie_pset
Reviewed-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Bartlomiej Dudek <[email protected]>
Signed-off-by: Patel Jay P <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The arguments for trace_hfi1_rcvhdr() get computed every
time in the hot path regardless of the whether the trace
is on or off. This is seen to be costly with a profile.
The handling of fault inject isolates the verbs device for
all packets regardless of the presence of a RHF_DC_ERR error.
Fix the first by computing trace_hfi1_rcvhdr() arguments within
the trace itself, so that when the trace is off, the argument
data isn't computed. Fix the second by moving the error check to
handle_eflags() when an RHF error occurs and by testing for
RHF_DC_ERR before executing the reset of handle_eflags().
Reviewed-by: Don Hiatt <[email protected]>
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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packet->fecn and packet->becn are calculated in the hot path
and are never used. Remove these fields as they show to be
costly in a profile. Also, remove initialization for
becn and fecn in process_ecn() as they're unconditionally
assigned in the function and ensure fecn and becn variables
use a boolean type.
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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In the receive path, hfi1_ibport is looked up by indexing into an
array. A profile shows this to be expensive. The receive context
data has a pointer to the ibport data, use that pointer instead.
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The packet type comparison used to find out if a packet is a bypass
packet in the hot path is an expensive operation as seen in a profile.
Determine packet's pkey and migration bit through the bypass and 9B
code paths instead.
Reviewed-by: Don Hiatt <[email protected]>
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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In hfi1_rc_rcv(), BTH is computed for all packets received.
However, it's only used for packets received with opcodes
RDMA_WRITE_LAST and SEND_LAST, and it is a costly operation.
Compute BTH only in the RDMA_WRITE_LAST/SEND_LAST code path
and let the compiler handle endianness conversion for bitwise
operations.
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Sebastian Sanchez <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The s_hdrwords variable was used to indicate whether a
packet was already built on a previous iteration of the
send engine. This variable assumed the protection of the
QP's RVT_S_BUSY flag, which was required since the the
QP's s_lock was dropped just prior to the packet being
queued on the one of the egress mechanisms.
Support for multiple send engine instantiations require
that the field not be used due to concurency issues.
The ps.txreq signals the "already built" without the
potential concurency issues.
Fix by getting rid of all s_hdrword usage. A wrapper
is added to test for the already built case that used to
use s_hdrwords.
What used to be stored in s_hdrwords is now in the txreq.
The PBC is not counted, but is added in the pio/sdma code
paths prior to posting the packet.
Reviewed-by: Don Hiatt <[email protected]>
Signed-off-by: Mitko Haralanov <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The dd refcount is speculatively incremented prior to allocating
the fd memory with kzalloc(). If that kzalloc() failed the dd
refcount leaks.
Increment refcount on kzalloc success.
Fixes: e11ffbd57520 ("IB/hfi1: Do not free hfi1 cdev parent structure early")
Reviewed-by: Michael J Ruhl <[email protected]>
Signed-off-by: Alex Estrin <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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With IRQF_SHARED flag set and CONFIG_DEBUG_SHIRQ enabled
module removal may result in panic in sdma_interrupt() routine
if associated sdma context was released before pci_free_irq();
[ 9198.939885] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 9198.940514] IP: sdma_make_progress+0xa5/0x450 [hfi1]
[ 9198.941114] PGD 170bdc0067 P4D 170bdc0067 PUD 172063e067 PMD 0
[ 9198.941783] Oops: 0000 [#1] SMP
.....
[ 9198.958877] CPU: 132 PID: 64173 Comm: rmmod Tainted: G OE 4.14.0-rc4+ #1
[ 9198.961032] Hardware name: Intel Corporation S7200AP/S7200AP, BIOS S72C610.86B.01.02.0118.080620171935 08/06/2017
[ 9198.963323] task: ffff9681397f0000 task.stack: ffffae1647c40000
[ 9198.965695] RIP: 0010:sdma_make_progress+0xa5/0x450 [hfi1]
[ 9198.968082] RSP: 0018:ffffae1647c43be8 EFLAGS: 00010046
[ 9198.970503] RAX: 0000000000000000 RBX: ffff9680ce8b5ca8 RCX: 0000000000000000
[ 9198.973006] RDX: 0000000000000000 RSI: 0000000001a00d28 RDI: ffff9680ce8b5ca0
[ 9198.975546] RBP: ffffae1647c43c40 R08: ffff96814325ec00 R09: 00000000ffffffff
[ 9198.978142] R10: 000000004325e501 R11: ffff96814325ec00 R12: ffff9680ce8b5c44
[ 9198.980779] R13: ffff9680ce8b5ca0 R14: 0000000000000000 R15: ffff9680ce8b5b00
[ 9198.983462] FS: 00007f31196ba740(0000) GS:ffff96819df00000(0000) knlGS:0000000000000000
[ 9198.986231] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9198.989036] CR2: 0000000000000000 CR3: 000000170833f000 CR4: 00000000001406e0
[ 9198.991911] Call Trace:
[ 9198.994847] sdma_engine_interrupt+0x82/0x100 [hfi1]
[ 9198.997852] sdma_interrupt+0x61/0xc0 [hfi1]
[ 9199.000852] __free_irq+0x1b3/0x2d0
[ 9199.003873] free_irq+0x35/0x70
[ 9199.006909] pci_free_irq+0x1c/0x30
[ 9199.009999] clean_up_interrupts+0x53/0xf0 [hfi1]
[ 9199.013137] hfi1_start_cleanup+0x117/0x190 [hfi1]
[ 9199.016315] postinit_cleanup+0x1d/0x270 [hfi1]
[ 9199.019529] remove_one+0x1f3/0x210 [hfi1]
[ 9199.022738] pci_device_remove+0x39/0xc0
[ 9199.025974] device_release_driver_internal+0x141/0x210
[ 9199.029268] driver_detach+0x3f/0x80
[ 9199.032580] bus_remove_driver+0x55/0xd0
[ 9199.035931] driver_unregister+0x2c/0x50
[ 9199.039321] pci_unregister_driver+0x2a/0xa0
[ 9199.042755] hfi1_mod_cleanup+0x10/0xb50 [hfi1]
[ 9199.046196] SyS_delete_module+0x171/0x250
...
Fix by exporting sdma_clean() and removing from sdma_exit().
sdma_exit() now just manipulates the engine state,
leaving the memory free to sdma_clean() which is now called
just before the dd is freed.
Reviewed-by: Mike Marciniszyn <[email protected]>
Reviewed-by: Michael J Ruhl <[email protected]>
Signed-off-by: Alex Estrin <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The pci_request_irq() interfaces always adds the IRQF_SHARED bit to
all IRQ requests.
When the kernel is built with CONFIG_DEBUG_SHIRQ config flag, if the
IRQF_SHARED bit is set, a call to the IRQ handler is made from the
__free_irq() function. This is testing a race condition between the
IRQ cleanup and an IRQ racing the cleanup. The HFI driver should be
able to handle this race, but does not.
This race can cause traces that start with this footprint:
BUG: unable to handle kernel NULL pointer dereference at (null)
Call Trace:
<hfi1 irq handler>
...
__free_irq+0x1b3/0x2d0
free_irq+0x35/0x70
pci_free_irq+0x1c/0x30
clean_up_interrupts+0x53/0xf0 [hfi1]
hfi1_start_cleanup+0x122/0x190 [hfi1]
postinit_cleanup+0x1d/0x280 [hfi1]
remove_one+0x233/0x250 [hfi1]
pci_device_remove+0x39/0xc0
Export IRQ cleanup function so it can be called from other modules.
Using the exported cleanup function:
Re-order the driver cleanup code to clean up IRQ resources before
other resources, eliminating the race.
Re-order error path for init so that the race does not occur.
Reduce severity on spurious error message for SDMA IRQs to info.
Reviewed-by: Alex Estrin <[email protected]>
Reviewed-by: Patel Jay P <[email protected]>
Reviewed-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Michael J. Ruhl <[email protected]>
Signed-off-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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We should return -ENOMEM if the allocation fails. The current code
accidentally returns success.
Fixes: bf3c5a93c523 ("RDMA/nldev: Provide global resource utilization")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The mtt_table is cleaned up during the err_unmap_cqe label, it is a
mistake to duplicate the cleanup during the later unwind labels.
Signed-off-by: Lijun Ou <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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This patch mainly fix some style warings matched with the new checkpatch
requirement. The warning as follows:
WARNING: function definition argument 'struct hns_roce_cq *' should also have
an identifier name
Signed-off-by: Lijun Ou <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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The double not-operator is unncessary when used in a boolean context. This
patch removes them.
Signed-off-by: Lijun Ou <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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Add a jump target so that a bit of exception handling can be better reused
at the end of this function.
Signed-off-by: Markus Elfring <[email protected]>
Acked-by: Devesh Sharma <[email protected]>
Acked-by: Jonathan Toppins <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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bnxt_qplib_alloc_dpi_tbl()
Omit extra messages for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <[email protected]>
Acked-by: Devesh Sharma <[email protected]>
Acked-by: Jonathan Toppins <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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Providing a sysfs attribute for nd_region that shows the persistence
capabilities for the platform.
Signed-off-by: Dave Jiang <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Signed-off-by: Ross Zwisler <[email protected]>
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Propagate the ADR attribute flag from the NFIT platform capabilities
sub-table to nd_region.
Signed-off-by: Dave Jiang <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Signed-off-by: Ross Zwisler <[email protected]>
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In ACPI 6.2a the platform capability structure has been added to the NFIT
tables. That provides software the ability to determine whether a system
supports the auto flushing of CPU caches on power loss. If the capability
is supported, we do not need to do dax_flush(). Plumbing the path to set the
property on per region from the NFIT tables.
This patch depends on the ACPI NFIT 6.2a platform capabilities support code
in include/acpi/actbl1.h.
Signed-off-by: Dave Jiang <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Signed-off-by: Ross Zwisler <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek:
- Add a console_msg_format command line option:
The value "default" keeps the old "[time stamp] text\n" format. The
value "syslog" allows to see the syslog-like "<log
level>[timestamp] text" format.
This feature was requested by people doing regression tests, for
example, 0day robot. They want to have both filtered and full logs
at hands.
- Reduce the risk of softlockup:
Pass the console owner in a busy loop.
This is a new approach to the old problem. It was first proposed by
Steven Rostedt on Kernel Summit 2017. It marks a context in which
the console_lock owner calls console drivers and could not sleep.
On the other side, printk() callers could detect this state and use
a busy wait instead of a simple console_trylock(). Finally, the
console_lock owner checks if there is a busy waiter at the end of
the special context and eventually passes the console_lock to the
waiter.
The hand-off works surprisingly well and helps in many situations.
Well, there is still a possibility of the softlockup, for example,
when the flood of messages stops and the last owner still has too
much to flush.
There is increasing number of people having problems with
printk-related softlockups. We might eventually need to get better
solution. Anyway, this looks like a good start and promising
direction.
- Do not allow to schedule in console_unlock() called from printk():
This reverts an older controversial commit. The reschedule helped
to avoid softlockups. But it also slowed down the console output.
This patch is obsoleted by the new console waiter logic described
above. In fact, the reschedule made the hand-off less effective.
- Deprecate "%pf" and "%pF" format specifier:
It was needed on ia64, ppc64 and parisc64 to dereference function
descriptors and show the real function address. It is done
transparently by "%ps" and "pS" format specifier now.
Sergey Senozhatsky found that all the function descriptors were in
a special elf section and could be easily detected.
- Remove printk_symbol() API:
It has been obsoleted by "%pS" format specifier, and this change
helped to remove few continuous lines and a less intuitive old API.
- Remove redundant memsets:
Sergey removed unnecessary memset when processing printk.devkmsg
command line option.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: (27 commits)
printk: drop redundant devkmsg_log_str memsets
printk: Never set console_may_schedule in console_trylock()
printk: Hide console waiter logic into helpers
printk: Add console owner and waiter logic to load balance console writes
kallsyms: remove print_symbol() function
checkpatch: add pF/pf deprecation warning
symbol lookup: introduce dereference_symbol_descriptor()
parisc64: Add .opd based function descriptor dereference
powerpc64: Add .opd based function descriptor dereference
ia64: Add .opd based function descriptor dereference
sections: split dereference_function_descriptor()
openrisc: Fix conflicting types for _exext and _stext
lib: do not use print_symbol()
irq debug: do not use print_symbol()
sysfs: do not use print_symbol()
drivers: do not use print_symbol()
x86: do not use print_symbol()
unicore32: do not use print_symbol()
sh: do not use print_symbol()
mn10300: do not use print_symbol()
...
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Pull VFIO updates from Alex Williamson:
- Mask INTx from user if pdev->irq is zero (Alexey Kardashevskiy)
- Capability helper cleanup (Alex Williamson)
- Allow mmaps overlapping MSI-X vector table with region capability
exposing this feature (Alexey Kardashevskiy)
- mdev static cleanups (Xiongwei Song)
* tag 'vfio-v4.16-rc1' of git://github.com/awilliam/linux-vfio:
vfio: mdev: make a couple of functions and structure vfio_mdev_driver static
vfio-pci: Allow mapping MSIX BAR
vfio: Simplify capability helper
vfio-pci: Mask INTx if a device is not capabable of enabling it
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This implements ndo_poll_controller callback which is necessary to
enable netconsole.
Signed-off-by: Alexander Monakov <[email protected]>
Cc: Russell King <[email protected]>
Cc: Sebastian Hesselbarth <[email protected]>
Cc: Florian Fainelli <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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the VIOS server
Older versions of VIOS servers do not send the firmware level in the VPD
buffer for the ibmvnic driver. Thus, not only the current message is mis-
leading but the firmware version in the ethtool will be NULL. Therefore,
this patch fixes the firmware string and its warning.
Fixes: 4e6759be28e4 ("ibmvnic: Feature implementation of VPD for the ibmvnic driver")
Signed-off-by: Desnes A. Nunes do Rosario <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Pointer rq is being initialized but this value is never read, it
is being updated inside a for-loop. Remove the initialization and
move it into the scope of the for-loop.
Cleans up clang warning:
drivers/net/vmxnet3/vmxnet3_drv.c:2763:27: warning: Value stored
to 'rq' during its initialization is never read
Signed-off-by: Colin Ian King <[email protected]>
Acked-by: Shrikrishna Khare <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Pointer phydev is initialized and this value is never read, phydev
is immediately updated to a new value, hence this initialization
is redundant and can be removed
Cleans up clang warning:
drivers/net/usb/lan78xx.c:2009:21: warning: Value stored to 'phydev'
during its initialization is never read
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Pointer rxdesc is assigned a value that is never read, it is overwritten
by a new assignment inside a while loop hence the initial assignment
is redundant and can be removed.
Cleans up clang warning:
drivers/net/ethernet/jme.c:1074:17: warning: Value stored to 'rxdesc'
during its initialization is never read
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig updates from Masahiro Yamada:
"A pretty big batch of Kconfig updates.
I have to mention the lexer and parser of Kconfig are now built from
real .l and .y sources. So, flex and bison are the requirement for
building the kernel. Both of them (unlike gperf) have been stable for
a long time. This change has been tested several weeks in linux-next,
and I did not receive any problem report about this.
Summary:
- add checks for mistakes, like the choice default is not in choice,
help is doubled
- document data structure and complex code
- fix various memory leaks
- change Makefile to build lexer and parser instead of using
pre-generated C files
- drop 'boolean' keyword, which is equivalent to 'bool'
- use default 'yy' prefix and remove unneeded Make variables
- fix gettext() check for xconfig
- announce that oldnoconfig will be finally removed
- make 'Selected by:' and 'Implied by' readable in help and search
result
- hide silentoldconfig from 'make help' to stop confusing people
- fix misc things and cleanups"
* tag 'kconfig-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (37 commits)
kconfig: Remove silentoldconfig from help and docs; fix kconfig/conf's help
kconfig: make "Selected by:" and "Implied by:" readable
kconfig: announce removal of oldnoconfig if used
kconfig: fix make xconfig when gettext is missing
kconfig: Clarify menu and 'if' dependency propagation
kconfig: Document 'if' flattening logic
kconfig: Clarify choice dependency propagation
kconfig: Document SYMBOL_OPTIONAL logic
kbuild: remove unnecessary LEX_PREFIX and YACC_PREFIX
kconfig: use default 'yy' prefix for lexer and parser
kconfig: make conf_unsaved a local variable of conf_read()
kconfig: make xfgets() really static
kconfig: make input_mode static
kconfig: Warn if there is more than one help text
kconfig: drop 'boolean' keyword
kconfig: use bool instead of boolean for type definition attributes, again
kconfig: Remove menu_end_entry()
kconfig: Document important expression functions
kconfig: Document automatic submenu creation code
kconfig: Fix choice symbol expression leak
...
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There is no requirement for doing the PCODE request polling atomically,
so do that only for a short time switching to sleeping poll afterwards.
The specification requires a 150usec timeout for the change notification,
so let's use that for the atomic poll. Do the extra 2ms poll - needed as
a workaround on BXT/GLK - in sleeping mode.
v2:
- rebase on v2 of patchset dropping the sandybridge_pcode_read/write
refactoring (Chris)
Cc: Chris Wilson <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Currently we see sporadic timeouts during CDCLK changing both on BXT and
GLK as reported by the Bugzilla: ticket. It's easy to reproduce this by
changing the frequency in a tight loop after blanking the display. The
upper bound for the completion time is 800us based on my tests, so
increase it from the current 500us to 2ms; with that I couldn't trigger
the problem either on BXT or GLK.
Note that timeouts happened during both the change notification and the
voltage level setting PCODE request. (For the latter one BSpec doesn't
require us to wait for completion before further HW programming.)
This issue is similar to
commit 2c7d0602c815 ("drm/i915/gen9: Fix PCODE polling during CDCLK
change notification")
but there the PCODE request does complete (as shown by the mbox
busy flag), only the reply we get from PCODE indicates a failure.
So there we keep resending the request until a success reply, here we
just have to increase the timeout for the one PCODE request we send.
v2:
- s/snb_pcode_request/sandybridge_pcode_write_timeout/ (Ville)
Cc: Chris Wilson <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: <[email protected]> # v4.4+
Acked-by: Chris Wilson <[email protected]> (v1)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103326
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- Convert to use memblock_virt_alloc in DT code which supports
bootmem arches. With this we can remove the arch specific
early_init_dt_alloc_memory_arch() functions.
- Enable running the DT unittests on UML
- Use SPDX license tags on DT files
- Fix early FDT kconfig ifdef logic
- Clean-up unittest Makefile
- Fix function comment for of_irq_parse_raw
- Add missing documentation for linux,initrd-{start,end} properties
- Clean-up of binding examples using uppercase hex
- Add trivial devices W83773G and Infineon TLV493D-A1B6
- Add missing STM32 SoC bindings
- Various small binding doc fixes
* tag 'devicetree-for-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (23 commits)
xtensa: remove arch specific early DT functions
x86: remove arch specific early_init_dt_alloc_memory_arch
nios2: remove arch specific early_init_dt_alloc_memory_arch
mips: remove arch specific early_init_dt_alloc_memory_arch
metag: remove arch specific early DT functions
cris: remove arch specific early DT functions
libfdt: remove unnecessary include directive from <linux/libfdt.h>
of: unittest: refactor Makefile
of/fdt: use memblock_virt_alloc for early alloc
of: Use SPDX license tag for DT files
of/fdt: Fix #ifdef dependency of early flattree declarations
dt-bindings: h8300 clocksource: correct spelling of pulse
dt-bindings: imx6q-pcie: Add required property for i.MX6SX
mmc: Don't reference Linux-specific OF_GPIO_ACTIVE_LOW flag in DT binding
dt-bindings: Use lower case hex in unit-addresses
dt-bindings: display: panel: Fix compatible string for Toshiba LT089AC29000
dt-bindings: Add Infineon TLV493D-A1B6
dt-bindings: mailbox: ti,message-manager: Fix interrupt name error
dt-bindings: chosen: Document linux,initrd-{start,end}
dt-bindings: arm: document supported STM32 SoC family
...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input layer updates from Dmitry Torokhov:
- evdev interface has been adjusted to extend the life of timestamps on
32 bit systems to the year of 2108
- Synaptics RMI4 driver's PS/2 guest handling ha beed updated to
improve chances of detecting trackpoints on the pass-through port
- mms114 touchcsreen controller driver has been updated to support
generic device properties and work with mms152 cntrollers
- Goodix driver now supports generic touchscreen properties
- couple of drivers for AVR32 architecture are gone as the architecture
support has been removed from the kernel
- gpio-tilt driver has been removed as there are no mainline users and
the driver itself is using legacy APIs and relies on platform data
- MODULE_LINECSE/MODULE_VERSION cleanups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (45 commits)
Input: goodix - use generic touchscreen_properties
Input: mms114 - fix typo in definition
Input: mms114 - use BIT() macro instead of explicit shifting
Input: mms114 - replace mdelay with msleep
Input: mms114 - add support for mms152
Input: mms114 - drop platform data and use generic APIs
Input: mms114 - mark as direct input device
Input: mms114 - do not clobber interrupt trigger
Input: edt-ft5x06 - fix error handling for factory mode on non-M06
Input: stmfts - set IRQ_NOAUTOEN to the irq flag
Input: auo-pixcir-ts - delete an unnecessary return statement
Input: auo-pixcir-ts - remove custom log for a failed memory allocation
Input: da9052_tsi - remove unused mutex
Input: docs - use PROPERTY_ENTRY_U32() directly
Input: synaptics-rmi4 - log when we create a guest serio port
Input: synaptics-rmi4 - unmask F03 interrupts when port is opened
Input: synaptics-rmi4 - do not delete interrupt memory too early
Input: ad7877 - use managed resource allocations
Input: stmfts,s6sy671 - add SPDX identifier
Input: remove atmel-wm97xx touchscreen driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big pull request for char/misc drivers for 4.16-rc1.
There's a lot of stuff in here. Three new driver subsystems were added
for various types of hardware busses:
- siox
- slimbus
- soundwire
as well as a new vboxguest subsystem for the VirtualBox hypervisor
drivers.
There's also big updates from the FPGA subsystem, lots of Android
binder fixes, the usual handful of hyper-v updates, and lots of other
smaller driver updates.
All of these have been in linux-next for a long time, with no reported
issues"
* tag 'char-misc-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (155 commits)
char: lp: use true or false for boolean values
android: binder: use VM_ALLOC to get vm area
android: binder: Use true and false for boolean values
lkdtm: fix handle_irq_event symbol for INT_HW_IRQ_EN
EISA: Delete error message for a failed memory allocation in eisa_probe()
EISA: Whitespace cleanup
misc: remove AVR32 dependencies
virt: vbox: Add error mapping for VERR_INVALID_NAME and VERR_NO_MORE_FILES
soundwire: Fix a signedness bug
uio_hv_generic: fix new type mismatch warnings
uio_hv_generic: fix type mismatch warnings
auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
uio_hv_generic: add rescind support
uio_hv_generic: check that host supports monitor page
uio_hv_generic: create send and receive buffers
uio: document uio_hv_generic regions
doc: fix documentation about uio_hv_generic
vmbus: add monitor_id and subchannel_id to sysfs per channel
vmbus: fix ABI documentation
uio_hv_generic: use ISR callback method
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the set of "big" driver core patches for 4.16-rc1.
The majority of the work here is in the firmware subsystem, with
reworks to try to attempt to make the code easier to handle in the
long run, but no functional change. There's also some tree-wide sysfs
attribute fixups with lots of acks from the various subsystem
maintainers, as well as a handful of other normal fixes and changes.
And finally, some license cleanups for the driver core and sysfs code.
All have been in linux-next for a while with no reported issues"
* tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits)
device property: Define type of PROPERTY_ENRTY_*() macros
device property: Reuse property_entry_free_data()
device property: Move property_entry_free_data() upper
firmware: Fix up docs referring to FIRMWARE_IN_KERNEL
firmware: Drop FIRMWARE_IN_KERNEL Kconfig option
USB: serial: keyspan: Drop firmware Kconfig options
sysfs: remove DEBUG defines
sysfs: use SPDX identifiers
drivers: base: add coredump driver ops
sysfs: add attribute specification for /sysfs/devices/.../coredump
test_firmware: fix missing unlock on error in config_num_requests_store()
test_firmware: make local symbol test_fw_config static
sysfs: turn WARN() into pr_warn()
firmware: Fix a typo in fallback-mechanisms.rst
treewide: Use DEVICE_ATTR_WO
treewide: Use DEVICE_ATTR_RO
treewide: Use DEVICE_ATTR_RW
sysfs.h: Use octal permissions
component: add debugfs support
bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here is the big Staging and IIO driver patches for 4.16-rc1.
There is the normal amount of new IIO drivers added, like all
releases.
The networking IPX and the ncpfs filesystem are moved into the staging
tree, as they are on their way out of the kernel due to lack of use
anymore.
The visorbus subsystem finall has started moving out of the staging
tree to the "real" part of the kernel, and the most and fsl-mc
codebases are almost ready to move out, that will probably happen for
4.17-rc1 if all goes well.
Other than that, there is a bunch of license header cleanups in the
tree, along with the normal amount of coding style churn that we all
know and love for this codebase. I also got frustrated at the
Meltdown/Spectre mess and took it out on the dgnc tty driver, deleting
huge chunks of it that were never even being used.
Full details of everything is in the shortlog.
All of these patches have been in linux-next for a while with no
reported issues"
* tag 'staging-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (627 commits)
staging: rtlwifi: remove redundant initialization of 'cfg_cmd'
staging: rtl8723bs: remove a couple of redundant initializations
staging: comedi: reformat lines to 80 chars or less
staging: lustre: separate a connection destroy from free struct kib_conn
Staging: rtl8723bs: Use !x instead of NULL comparison
Staging: rtl8723bs: Remove dead code
Staging: rtl8723bs: Change names to conform to the kernel code
staging: ccree: Fix missing blank line after declaration
staging: rtl8188eu: remove redundant initialization of 'pwrcfgcmd'
staging: rtlwifi: remove unused RTLHALMAC_ST and RTLPHYDM_ST
staging: fbtft: remove unused FB_TFT_SSD1325 kconfig
staging: comedi: dt2811: remove redundant initialization of 'ns'
staging: wilc1000: fix alignments to match open parenthesis
staging: wilc1000: removed unnecessary defined enums typedef
staging: wilc1000: remove unnecessary use of parentheses
staging: rtl8192u: remove redundant initialization of 'timeout'
staging: sm750fb: fix CamelCase for dispSet var
staging: lustre: lnet/selftest: fix compile error on UP build
staging: rtl8723bs: hal_com_phycfg: Remove unneeded semicolons
staging: rts5208: Fix "seg_no" calculation in reset_ms_card()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/staging driver updates from Greg KH:
"Here is the big tty/serial driver update for 4.16-rc1.
The usual number of various serial driver fixes and updates to try to
get them to work with crazy hardware configurations (seriously, how
many different ways are hardware engineers going to come up with to
hook up a simple UART?)
There is also some serdev bugfixes and updates, as well as a
smattering of other small fixes in here.
All have been in the linux-next tree for a while, with no reported
issues"
* tag 'tty-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (65 commits)
tty: serial: exar: Relocate sleep wake-up handling
tty: fix data race between tty_init_dev and flush of buf
serial: imx: fix endless loop during suspend
serial: core: mark port as initialized after successful IRQ change
serdev: only match serdev devices
serdev: do not generate modaliases for controllers
serial: mxs-auart: don't use GPIOF_* with gpiod_get_direction
serial: 8250_dw: Revert "Improve clock rate setting"
MAINTAINERS: Add myself as designated reviewer for 8250_dw
gpio: serial: max310x: Support open-drain configuration for GPIOs
serdev: Fix serdev_uevent failure on ACPI enumerated serdev-controllers
serial: 8250_ingenic: Parse earlycon options
serial: 8250_ingenic: Add support for the JZ4770 SoC
serial: core: Make uart_parse_options take const char* argument
serial: 8250_of: fix return code when probe function fails to get reset
serial: imx: Only wakeup via RTSDEN bit if the system has RTS/CTS
serial: 8250_uniphier: fix error return code in uniphier_uart_probe()
tty: n_gsm: Allow ADM response in addition to UA for control dlci
tty: omap-serial: Fix initial on-boot RTS GPIO level
tty: serial: jsm: Add one check against NULL pointer dereference
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB and PHY driver update for 4.16-rc1.
Along with the normally expected XHCI, MUSB, and Gadget driver
patches, there are some PHY driver fixes, license cleanups, sysfs
attribute cleanups, usbip changes, and a raft of other smaller fixes
and additions.
Full details are in the shortlog.
All of these have been in the linux-next tree for a long time with no
reported issues"
* tag 'usb-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (137 commits)
USB: serial: pl2303: new device id for Chilitag
USB: misc: fix up some remaining DEVICE_ATTR() usages
USB: musb: fix up one odd DEVICE_ATTR() usage
USB: atm: fix up some remaining DEVICE_ATTR() usage
USB: move many drivers to use DEVICE_ATTR_WO
USB: move many drivers to use DEVICE_ATTR_RO
USB: move many drivers to use DEVICE_ATTR_RW
USB: misc: chaoskey: Use true and false for boolean values
USB: storage: remove old wording about how to submit a change
USB: storage: remove invalid URL from drivers
usb: ehci-omap: don't complain on -EPROBE_DEFER when no PHY found
usbip: list: don't list devices attached to vhci_hcd
usbip: prevent bind loops on devices attached to vhci_hcd
USB: serial: remove redundant initializations of 'mos_parport'
usb/gadget: Fix "high bandwidth" check in usb_gadget_ep_match_desc()
usb: gadget: compress return logic into one line
usbip: vhci_hcd: update 'status' file header and format
USB: serial: simple: add Motorola Tetra driver
CDC-ACM: apply quirk for card reader
usb: option: Add support for FS040U modem
...
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* pci/spdx:
PCI: Add SPDX GPL-2.0+ to replace implicit GPL v2 or later statement
PCI: Add SPDX GPL-2.0+ to replace GPL v2 or later boilerplate
PCI: Add SPDX GPL-2.0 to replace COPYING boilerplate
PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplate
PCI: Add SPDX GPL-2.0 when no license was specified
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* lorenzo/pci/xgene:
PCI: xgene: Remove leftover pci_scan_child_bus() call
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* lorenzo/pci/tegra:
PCI: tegra: Use bus->sysdata to store and get host private data
of: Export of_pci_range_to_resource()
PCI: tegra: Refactor configuration space mapping code
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* lorenzo/pci/rcar:
PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures
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* lorenzo/pci/keystone:
PCI: keystone: Fix interrupt-controller-node lookup
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* lorenzo/pci/endpoint:
PCI: endpoint: Use EPC's device in dma_alloc_coherent()/dma_free_coherent()
PCI: designware-ep: Fix ->get_msi() to check MSI_EN bit
PCI: endpoint: Fix find_first_zero_bit() usage
PCI: endpoint: Populate func_no before calling pci_epc_add_epf()
PCI: designware-ep: Fix find_first_zero_bit() usage
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Pull small IDE cleanup from David Miller.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
ide: remove duplicated assignment to 'cursg'
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* lorenzo/pci/dwc:
PCI: exynos: Fix a potential init_clk_resources NULL pointer dereference
PCI: iproc: Fix NULL pointer dereference for BCMA
PCI: dra7xx: Iterate over INTx status bits
PCI: dra7xx: Fix legacy INTD IRQ handling
PCI: qcom: Account for const type of of_device_id.data
PCI: dwc: artpec6: Fix return value check in artpec6_add_pcie_ep()
PCI: exynos: Remove deprecated PHY initialization code
PCI: dwc: artpec6: Add support for the ARTPEC-7 SoC
bindings: PCI: artpec: Add support for the ARTPEC-7 SoC
PCI: dwc: artpec6: Deassert the core before waiting for PHY
PCI: dwc: Make cpu_addr_fixup take struct dw_pcie as argument
PCI: dwc: artpec6: Add support for endpoint mode
bindings: PCI: artpec: Add support for endpoint mode
PCI: dwc: artpec6: Split artpec6_pcie_establish_link() into smaller functions
PCI: dwc: artpec6: Use BIT and GENMASK macros
PCI: dwc: artpec6: Remove unused defines
PCI: dwc: dra7xx: Help compiler to remove unused code
PCI: dwc: dra7xx: Assign pp->ops in dra7xx_add_pcie_port() rather than in probe
PCI: dwc: dra7xx: Refactor Kconfig and Makefile handling for host/ep mode
PCI: designware-ep: Add generic function for raising MSI irq
PCI: designware-ep: Remove static keyword from dw_pcie_ep_reset_bar()
PCI: designware-ep: Pre-allocate memory for MSI in dw_pcie_ep_init
PCI: designware-ep: Read-only registers need DBI_RO_WR_EN to be writable
PCI: designware-ep: dw_pcie_ep_set_msi() should only set MMC bits
PCI: dwc: Use the DMA-API to get the MSI address
pci: dwc: pci-dra7xx: Make shutdown handler static
Includes resolution to conflict between:
4494738de0d9 ("PCI: endpoint: Add the function number as argument to EPC ops")
6f6d7873711c ("PCI: designware-ep: Add generic function for raising MSI irq")
The resolution is due to Niklas Cassel <[email protected]>:
https://lkml.kernel.org/r/[email protected]
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Pull sparc updates from David Miller:
"Of note is the addition of a driver for the Data Analytics
Accelerator, and some small cleanups"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
oradax: Fix return value check in dax_attach()
sparc: vDSO: remove an extra tab
sparc64: drop unneeded compat include
sparc64: Oracle DAX driver
sparc64: Oracle DAX infrastructure
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"Bug fixes, small improvements and one notable change: the system call
table and the unistd.h header are now generated automatically with a
shell script from a text file"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/decompressor: discard __ksymtab and .eh_frame sections
s390: fix handling of -1 in set{,fs}[gu]id16 syscalls
s390/tools: generate header files in arch/s390/include/generated/
s390/syscalls: use generated syscall_table.h and unistd.h header files
s390/syscalls: add Makefile to generate system call header files
s390/syscalls: add syscalltbl script
s390/syscalls: add system call table
s390/decompressor: swap .text and .rodata.compressed sections
s390/sclp: fix .data section specification
s390/ipl: avoid usage of __section(.data)
s390/head: replace hard coded values with constants
s390/disassembler: add generated gen_opcode_table tool to .gitignore
s390: remove bogus system call table entries
s390/kprobes: remove duplicate includes
s390/dasd: Remove dead return code checks
s390/dasd: Simplify code
s390/vdso: revise CFI annotations of vDSO functions
s390/kernel: emit CFI data in .debug_frame and discard .eh_frame sections
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If the wait timeouts, the caps are probably invalid and we shouldn't be
passing them to userspace.
Signed-off-by: Tomeu Vizoso <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Gerd Hoffmann <[email protected]>
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Commit e2b763caa6eb ("drm/i915: Remove bitmap tracking for used-pdpes")
believed that because it did not insert its freshly allocated page
directory into the pd tree, it was safe from the shrinker. I failed to
heed the lesson learnt from commit dd19674bacba ("drm/i915: Remove bitmap
tracking for used-ptes") that we need to pin all the levels in the tree
before hitting the shrinker or else the shrinker may free an upper layer
as we proceed to allocate the tree. Thus leaving dangling pointers
everywhere and a GPF should we hit direct reclaim at just the wrong
moment.
CPU: 0 PID: 7374 Comm: chromium Tainted: P O 4.14.13-1-ARCH #1
Hardware name: Apple Inc. MacBookPro12,1/Mac-E43C1C25D4880AD6, BIOS MBP121.88Z.0167.B33.1706181928 06/18/2017
task: ffff994f696c2c40 task.stack: ffffb1a789d4c000
RIP: 0010:gen8_ppgtt_set_pde.isra.40+0x48/0x70 [i915]
RSP: 0018:ffffb1a789d4f940 EFLAGS: 00010206
RAX: 81c1788cc4f68138 RBX: ffff994f54db8000 RCX: ffff994f696c2c40
RDX: 000000023bc73003 RSI: ffff994d598b6b80 RDI: ffff994f54db8000
RBP: ffff994d598b6b80 R08: 0000000000000000 R09: 0000000000000000
R10: ffffb1a789d4f550 R11: ffff994eaf3c3208 R12: 0000000000000027
R13: 0000000000005000 R14: 0000000004e8f000 R15: ffff994f54dba000
FS: 00007f585886aa00(0000) GS:ffff994faec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ac8e8 CR3: 00000002552c8004 CR4: 00000000003606f0
Call Trace:
gen8_ppgtt_alloc_pdp+0x178/0x320 [i915]
gen8_ppgtt_alloc_4lvl+0x5f/0x150 [i915]
ppgtt_bind_vma+0x30/0x70 [i915]
i915_vma_bind+0x68/0xd0 [i915]
__i915_vma_do_pin+0x2d6/0x3a0 [i915]
eb_lookup_vmas+0x7a2/0xb50 [i915]
i915_gem_do_execbuffer+0x4d7/0x10e0 [i915]
? sock_wfree+0x34/0x60
? unix_stream_read_generic+0x1f9/0x7e0
? import_iovec+0x37/0xd0
? i915_gem_execbuffer2+0x5d/0x390 [i915]
i915_gem_execbuffer2+0x1b7/0x390 [i915]
? i915_gem_execbuffer+0x2d0/0x2d0 [i915]
drm_ioctl_kernel+0x59/0xb0 [drm]
drm_ioctl+0x2d5/0x370 [drm]
? i915_gem_execbuffer+0x2d0/0x2d0 [i915]
? __seccomp_filter+0x3b/0x260
do_vfs_ioctl+0xa1/0x610
? syscall_trace_enter+0xdb/0x2b0
SyS_ioctl+0x74/0x80
do_syscall_64+0x55/0x110
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x7f584fa82d27
RSP: 002b:00007ffee14a7828 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000003b0126a1030 RCX: 00007f584fa82d27
RDX: 00007ffee14a7870 RSI: 0000000040406469 RDI: 0000000000000080
RBP: 00007ffee14a7870 R08: 0000000000000002 R09: 0000000000000077
R10: 00007f5839f2b780 R11: 0000000000000246 R12: 0000000040406469
R13: 0000000000000080 R14: 00007f5842b00040 R15: 0000000000000000
Code: 01 00 83 81 58 0a 00 00 01 48 2b 05 13 9d fd c9 48 c1 f8 06 48 c1 e0 0c 48 8d 04 d0 48 8b 56 08 48 03 05 0c 9d fd c9 48 83 ca 03 <48> 89 10 83 a9 58 0a 00 00 01 65 ff 0d 37 03 fb 3e 74 02 f3 c3
RIP: gen8_ppgtt_set_pde.isra.40+0x48/0x70 [i915] RSP: ffffb1a789d4f940
Reported-by: Eric Blau <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104773
Fixes: e2b763caa6eb ("drm/i915: Remove bitmap tracking for used-pdpes")
References: dd19674bacba ("drm/i915: Remove bitmap tracking for used-ptes")
Testcase: igt/drv_selftest/live_gtt (igt_ppgtt_shrink_boom)
Signed-off-by: Chris Wilson <[email protected]>
Cc: Matthew Auld <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Matthew Auld <[email protected]>
(cherry picked from commit b715a2f0c7714a399e7f8e951cc8dea9cd4eeb4b)
Signed-off-by: Rodrigo Vivi <[email protected]>
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Previously, we relied on only running the hangcheck while somebody was
waiting on the GPU, in order to minimise the amount of time hangcheck
had to run. (If nobody was watching the GPU, nobody would notice if the
GPU wasn't responding -- eventually somebody would care and so kick
hangcheck into action.) However, this falls apart from around commit
4680816be336 ("drm/i915: Wait first for submission, before waiting for
request completion"), as not all waiters declare themselves to hangcheck
and so we could switch off hangcheck and miss GPU hangs even when
waiting under the struct_mutex.
If we enable hangcheck from the first request submission, and let it run
until the GPU is idle again, we forgo all the complexity involved with
only enabling around waiters. We just have to remember to be careful that
we do not declare a GPU hang when idly waiting for the next request to
be come ready, as we will run hangcheck continuously even when the
engines are stalled waiting for external events. This should be true
already as we should only be tracking requests submitted to hardware for
execution as an indicator that the engine is busy.
Fixes: 4680816be336 ("drm/i915: Wait first for submission, before waiting for request completion"
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104840
Signed-off-by: Chris Wilson <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Mika Kuoppala <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Mika Kuoppala <[email protected]>
(cherry picked from commit 889230489b6b138ba97ba2f13fc9644a3d16d0d2)
Signed-off-by: Rodrigo Vivi <[email protected]>
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