| Age | Commit message (Collapse) | Author |
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If we leave __exit annotation, driver can't be unbound
through sysfs.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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omapdss drivers cannot handle devices being unbound while the devices
are part of a connected display pipeline. Module refcounts are used to
prevent unloading the modules, but one can still manually unbind the
devices via sysfs, causing crash.
Set suppress_bind_attrs to disable the bind/unbind support via sysfs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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without MODULE_ALIAS(), omapfb won't get loaded
automatically.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Add VID/PID for Telit LE910 modem. Interfaces description is almost the
same than LE920, except that the qmi interface is number 2 (instead than
5).
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Add new IDs for the Xsens Awinda Station and Awinda Dongle.
While at it, order the definitions by PID and add a logical separation
between devices using Xsens' VID and those using FTDI's VID.
Cc: <stable@vger.kernel.org>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
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While the hash function used by the revoke hashtable is good somewhere else,
it's not really good here.
The default hash shift (8) means that one third of the hashing function
gets lost (and is undefined anyways (8 - 12 = negative shift)):
"(block << (hash_shift - 12))) & (table->hash_size - 1)"
Instead, just use the kernel's generic hash function that gets used everywhere
else.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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Enable Silicon Labs Ember VID chips to enumerate with the cp210x usb serial
driver. EM358x devices operating with the Ember Z-Net 5.1.2 stack may now
connect to host PCs over a USB serial link.
Signed-off-by: Nathaniel Ting <nathaniel.ting@silabs.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Due to a switched left and right side of an assignment,
dquot_writeback_dquots() never returned error. This could result in
errors during quota writeback to not be reported to userspace properly.
Fix it.
CC: stable@vger.kernel.org
Coverity-id: 1226884
Signed-off-by: Jan Kara <jack@suse.cz>
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The check whether quota format is set even though there are no
quota files with journalled quota is pointless and it actually
makes it impossible to turn off journalled quotas (as there's
no way to unset journalled quota format). Just remove the check.
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
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Remove unnecessary mach/cpu.h header to be able to converge to a multiplatform
kernel.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Resolve shadow warnings that appear in W=2 builds by renaming
the "state" global to "vgastate".
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Since strsep is used to tokenize the options string, after each option
match the code should use "continue" to get the next token from strsep.
This patch applies this pattern consistently.
Previously, for "scrollback:" and "map:" the parse code would return
(unconditionally: strsep ensures *options != ','), causing any
following option to be ignored, while for "vc:" the parse code would
go on to parse further options within the same token, which could lead
to invalid input being accepted.
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This patch wires up the new syscall sys_bpf() on powerpc.
Passes the tests in samples/bpf:
#0 add+sub+mul OK
#1 unreachable OK
#2 unreachable2 OK
#3 out of range jump OK
#4 out of range jump2 OK
#5 test1 ld_imm64 OK
#6 test2 ld_imm64 OK
#7 test3 ld_imm64 OK
#8 test4 ld_imm64 OK
#9 test5 ld_imm64 OK
#10 no bpf_exit OK
#11 loop (back-edge) OK
#12 loop2 (back-edge) OK
#13 conditional loop OK
#14 read uninitialized register OK
#15 read invalid register OK
#16 program doesn't init R0 before exit OK
#17 stack out of bounds OK
#18 invalid call insn1 OK
#19 invalid call insn2 OK
#20 invalid function call OK
#21 uninitialized stack1 OK
#22 uninitialized stack2 OK
#23 check valid spill/fill OK
#24 check corrupted spill/fill OK
#25 invalid src register in STX OK
#26 invalid dst register in STX OK
#27 invalid dst register in ST OK
#28 invalid src register in LDX OK
#29 invalid dst register in LDX OK
#30 junk insn OK
#31 junk insn2 OK
#32 junk insn3 OK
#33 junk insn4 OK
#34 junk insn5 OK
#35 misaligned read from stack OK
#36 invalid map_fd for function call OK
#37 don't check return value before access OK
#38 access memory with incorrect alignment OK
#39 sometimes access memory with incorrect alignment OK
#40 jump test 1 OK
#41 jump test 2 OK
#42 jump test 3 OK
#43 jump test 4 OK
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
[mpe: test using samples/bpf]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Change maintainer of nx-842 compression coprocessor driver
to Dan Streetman.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Remove the check of CONFIG_PPC_SUBPAGE_PROT when deciding if
is_hugepage_only_range() is extern or inline. The extern version is in
slice.c and is built if CONFIG_PPC_MM_SLICES=y.
There was no build break possible because CONFIG_PPC_SUBPAGE_PROT is
only selectable under conditions which also mean CONFIG_PPC_MM_SLICES
will be selected.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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arch/powerpc/mm/slice.c:704:5: error: expected identifier or ‘(’ before numeric constant
int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
^
make[1]: *** [arch/powerpc/mm/slice.o] Error 1
make: *** [arch/powerpc/mm/slice.o] Error 2
This got introduced via 1217d34b531c76362217057ca70a8ce8950574e0
"powerpc: Ensure global functions include their prototype". We
started including linux/hugetlb.h with that patch and now we have
#define is_hugepage_only_range(mm, addr, len) 0
with hugetlbfs disabled.
Fixes: 1217d34b531c ("powerpc: Ensure global functions include their prototype")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Use netdev_alloc_pcpu_stats to allocate percpu stats and initialize syncp.
Fixes: 22e0f8b9322c "net: sched: make bstats per cpu and estimator RCU safe"
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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while comparing for verifier state equivalency the comparison
was missing a check for uninitialized register.
Make sure it does so and add a testcase.
Fixes: f1bca824dabb ("bpf: add search pruning optimization to verifier")
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The synchronize_rcu() in netlink_release() introduces unacceptable
latency. Reintroduce minimal lookup so we can drop the
synchronize_rcu() until socket destruction has been RCUfied.
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Steinar H. Gunderson <sgunderson@bigfoot.com>
Reported-and-tested-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Limit primary to qemu vgamem size, to avoid reaching
qemu guest bug "requested primary larger than framebuffer"
on resizing screen too large to fit.
Remove unneeded and misleading variables.
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1127552
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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The problem is introduced by commit 764f612c6c3c231b(blk-merge:
don't compute bi_phys_segments from bi_vcnt for cloned bio),
and merge is needed if number of current segment isn't less than
max segments.
Strictly speaking, bio->bi_vcnt shouldn't be used here since
it may not be accurate in cases of both cloned bio or bio cloned
from, but bio_segments() is a bit expensive, and bi_vcnt is still
the biggest number, so the approach should work.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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as per 0c740d0afc3b (introduce for_each_thread() to replace the buggy
while_each_thread()) get rid of do_each_thread { } while_each_thread()
construct and replace it by a more error prone for_each_thread.
This patch doesn't introduce any user visible change.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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PM freezer relies on having all tasks frozen by the time devices are
getting frozen so that no task will touch them while they are getting
frozen. But OOM killer is allowed to kill an already frozen task in
order to handle OOM situtation. In order to protect from late wake ups
OOM killer is disabled after all tasks are frozen. This, however, still
keeps a window open when a killed task didn't manage to die by the time
freeze_processes finishes.
Reduce the race window by checking all tasks after OOM killer has been
disabled. This is still not race free completely unfortunately because
oom_killer_disable cannot stop an already ongoing OOM killer so a task
might still wake up from the fridge and get killed without
freeze_processes noticing. Full synchronization of OOM and freezer is,
however, too heavy weight for this highly unlikely case.
Introduce and check oom_kills counter which gets incremented early when
the allocator enters __alloc_pages_may_oom path and only check all the
tasks if the counter changes during the freezing attempt. The counter
is updated so early to reduce the race window since allocator checked
oom_killer_disabled which is set by PM-freezing code. A false positive
will push the PM-freezer into a slow path but that is not a big deal.
Changes since v1
- push the re-check loop out of freeze_processes into
check_frozen_processes and invert the condition to make the code more
readable as per Rafael
Fixes: f660daac474c6f (oom: thaw threads if oom killed thread is frozen before deferring)
Cc: 3.2+ <stable@vger.kernel.org> # 3.2+
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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__thaw_task() no longer clears frozen flag since commit a3201227f803
(freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE).
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Since f660daac474c6f (oom: thaw threads if oom killed thread is frozen
before deferring) OOM killer relies on being able to thaw a frozen task
to handle OOM situation but a3201227f803 (freezer: make freezing() test
freeze conditions in effect instead of TIF_FREEZE) has reorganized the
code and stopped clearing freeze flag in __thaw_task. This means that
the target task only wakes up and goes into the fridge again because the
freezing condition hasn't changed for it. This reintroduces the bug
fixed by f660daac474c6f.
Fix the issue by checking for TIF_MEMDIE thread flag in
freezing_slow_path and exclude the task from freezing completely. If a
task was already frozen it would get woken by __thaw_task from OOM killer
and get out of freezer after rechecking freezing().
Changes since v1
- put TIF_MEMDIE check into freezing_slowpath rather than in __refrigerator
as per Oleg
- return __thaw_task into oom_scan_process_thread because
oom_kill_process will not wake task in the fridge because it is
sleeping uninterruptible
[mhocko@suse.cz: rewrote the changelog]
Fixes: a3201227f803 (freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE)
Cc: 3.3+ <stable@vger.kernel.org> # 3.3+
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Most devices are configured for 32-bit DMA addresses.
Setting the mask to 32-bit here removes the need for the
drivers to do it separately.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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m25p80's device ID table is now spi_nor_ids, defined in spi-nor. The
MODULE_DEVICE_TABLE() macro doesn't work with extern definitions, but
its use was also removed at the same time. Now if m25p80 is built as
a module it doesn't get the necessary aliases to be loaded
automatically.
A clean solution to this will involve defining the list of device
IDs in spi-nor.h and removing struct spi_device_id from the spi-nor
API, but this is quite a large change.
As a quick fix suitable for stable, copy the device IDs back into
m25p80.
Fixes: 03e296f613af ("mtd: m25p80: use the SPI nor framework")
Cc: <stable@vger.kernel.org> # 3.16.x: 32f1b7c8352f: mtd: move support for struct flash_platform_data into m25p80
Cc: <stable@vger.kernel.org> # 3.16.x: 90e55b3812a1: mtd: m25p80: get rid of spi_get_device_id
Cc: <stable@vger.kernel.org> # 3.16.x: 70f3ce0510af: mtd: spi-nor: make spi_nor_scan() take a chip type name, not spi_device_id
Cc: <stable@vger.kernel.org> # 3.16.x
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"Here are the target updates for v3.18-rc2 code. These where
originally destined for -rc1, but due to the combination of travel
last week for KVM Forum and my mistake of taking the three week merge
window literally, the pull request slipped.. Apologies for that.
Things where reasonably quiet this round. The highlights include:
- New userspace backend driver (target_core_user.ko) by Shaohua Li
and Andy Grover
- A number of cleanups in target, iscsi-taret and qla_target code
from Joern Engel
- Fix an OOPs related to queue full handling with CHECK_CONDITION
status from Quinn Tran
- Fix to disable TX completion interrupt coalescing in iser-target,
that was causing problems on some hardware
- Fix for PR APTPL metadata handling with demo-mode ACLs
I'm most excited about the new backend driver that uses UIO + shared
memory ring to dispatch I/O and control commands into user-space.
This was probably the most requested feature by users over the last
couple of years, and opens up a new area of development + porting of
existing user-space storage applications to LIO. Thanks to Shaohua +
Andy for making this happen.
Also another honorable mention, a new Xen PV SCSI driver was merged
via the xen/tip.git tree recently, which puts us now at 10 target
drivers in upstream! Thanks to David Vrabel + Juergen Gross for their
work to get this code merged"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (40 commits)
target/file: fix inclusive vfs_fsync_range() end
iser-target: Disable TX completion interrupt coalescing
target: Add force_pr_aptpl device attribute
target: Fix APTPL metadata handling for dynamic MappedLUNs
qla_target: don't delete changed nacls
target/user: Recalculate pad size inside is_ring_space_avail()
tcm_loop: Fixup tag handling
iser-target: Fix smatch warning
target/user: Fix up smatch warnings in tcmu_netlink_event
target: Add a user-passthrough backstore
target: Add documentation on the target userspace pass-through driver
uio: Export definition of struct uio_device
target: Remove unneeded check in sbc_parse_cdb
target: Fix queue full status NULL pointer for SCF_TRANSPORT_TASK_SENSE
qla_target: rearrange struct qla_tgt_prm
qla_target: improve qlt_unmap_sg()
qla_target: make some global functions static
qla_target: remove unused parameter
target: simplify core_tmr_abort_task
target: encapsulate smp_mb__after_atomic()
...
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When quiet_error applies rate limiting to buffer_io_error calls, what the
they apply to is unclear because the name is so generic, particularly
if the messages are interleaved with others:
[ 1936.063572] quiet_error: 664293 callbacks suppressed
[ 1936.065297] Buffer I/O error on dev sdr, logical block 257429952, lost async page write
[ 1936.067814] Buffer I/O error on dev sdr, logical block 257429953, lost async page write
Also, the function uses printk_ratelimit(), although printk.h includes a
comment advising "Please don't use... Instead use printk_ratelimited()."
Change buffer_io_error to check the BH_Quiet bit itself, drop the
printk_ratelimit call, and print using printk_ratelimited.
This makes the messages look like:
[ 387.208839] buffer_io_error: 676394 callbacks suppressed
[ 387.210693] Buffer I/O error on dev sdr, logical block 211291776, lost async page write
[ 387.213432] Buffer I/O error on dev sdr, logical block 211291777, lost async page write
Signed-off-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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buffer.c uses two printk calls to print these messages:
[67353.422338] Buffer I/O error on device sdr, logical block 212868488
[67353.422338] lost page write due to I/O error on sdr
In a busy system, they may be interleaved with other prints,
losing the context for the second message. Merge them into
one line with one printk call so the prints are atomic.
Also, differentiate between async page writes, sync page writes, and
async page reads.
Also, shorten "device" to "dev" to match the block layer prints:
[67353.467906] blk_update_request: critical target error, dev sdr, sector
1707107328
Also, use %llu rather than %Lu.
Resulting prints look like:
[ 1356.437006] blk_update_request: critical target error, dev sdr, sector 1719693992
[ 1361.383522] quiet_error: 659876 callbacks suppressed
[ 1361.385816] Buffer I/O error on dev sdr, logical block 256902912, lost async page write
[ 1361.385819] Buffer I/O error on dev sdr, logical block 256903644, lost async page write
Signed-off-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull email address change from Boaz Harrosh.
* 'for-linus' of git://git.open-osd.org/linux-open-osd:
Boaz Harrosh - fix email in Documentation
Boaz Harrosh - Fix broken email address
MAINTAINERS: Change Boaz Harrosh's email
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When running tipcTC&tipcTS test suite, below lockdep unsafe locking
scenario is reported:
[ 1109.997854]
[ 1109.997988] =================================
[ 1109.998290] [ INFO: inconsistent lock state ]
[ 1109.998575] 3.17.0-rc1+ #113 Not tainted
[ 1109.998762] ---------------------------------
[ 1109.998762] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 1109.998762] swapper/7/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 1109.998762] (slock-AF_TIPC){+.?...}, at: [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc]
[ 1109.998762] {SOFTIRQ-ON-W} state was registered at:
[ 1109.998762] [<ffffffff810a4770>] __lock_acquire+0x6a0/0x1d80
[ 1109.998762] [<ffffffff810a6555>] lock_acquire+0x95/0x1e0
[ 1109.998762] [<ffffffff81a2d1ce>] _raw_spin_lock+0x3e/0x80
[ 1109.998762] [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc]
[ 1109.998762] [<ffffffffa0004fe8>] tipc_link_xmit+0xa8/0xc0 [tipc]
[ 1109.998762] [<ffffffffa000ec6f>] tipc_sendmsg+0x15f/0x550 [tipc]
[ 1109.998762] [<ffffffffa000f165>] tipc_connect+0x105/0x140 [tipc]
[ 1109.998762] [<ffffffff817676ee>] SYSC_connect+0xae/0xc0
[ 1109.998762] [<ffffffff81767b7e>] SyS_connect+0xe/0x10
[ 1109.998762] [<ffffffff817a9788>] compat_SyS_socketcall+0xb8/0x200
[ 1109.998762] [<ffffffff81a306e5>] sysenter_dispatch+0x7/0x1f
[ 1109.998762] irq event stamp: 241060
[ 1109.998762] hardirqs last enabled at (241060): [<ffffffff8105a4ad>] __local_bh_enable_ip+0x6d/0xd0
[ 1109.998762] hardirqs last disabled at (241059): [<ffffffff8105a46f>] __local_bh_enable_ip+0x2f/0xd0
[ 1109.998762] softirqs last enabled at (241020): [<ffffffff81059a52>] _local_bh_enable+0x22/0x50
[ 1109.998762] softirqs last disabled at (241021): [<ffffffff8105a626>] irq_exit+0x96/0xc0
[ 1109.998762]
[ 1109.998762] other info that might help us debug this:
[ 1109.998762] Possible unsafe locking scenario:
[ 1109.998762]
[ 1109.998762] CPU0
[ 1109.998762] ----
[ 1109.998762] lock(slock-AF_TIPC);
[ 1109.998762] <Interrupt>
[ 1109.998762] lock(slock-AF_TIPC);
[ 1109.998762]
[ 1109.998762] *** DEADLOCK ***
[ 1109.998762]
[ 1109.998762] 2 locks held by swapper/7/0:
[ 1109.998762] #0: (rcu_read_lock){......}, at: [<ffffffff81782dc9>] __netif_receive_skb_core+0x69/0xb70
[ 1109.998762] #1: (rcu_read_lock){......}, at: [<ffffffffa0001c90>] tipc_l2_rcv_msg+0x40/0x260 [tipc]
[ 1109.998762]
[ 1109.998762] stack backtrace:
[ 1109.998762] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.17.0-rc1+ #113
[ 1109.998762] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[ 1109.998762] ffffffff82745830 ffff880016c03828 ffffffff81a209eb 0000000000000007
[ 1109.998762] ffff880017b3cac0 ffff880016c03888 ffffffff81a1c5ef 0000000000000001
[ 1109.998762] ffff880000000001 ffff880000000000 ffffffff81012d4f 0000000000000000
[ 1109.998762] Call Trace:
[ 1109.998762] <IRQ> [<ffffffff81a209eb>] dump_stack+0x4e/0x68
[ 1109.998762] [<ffffffff81a1c5ef>] print_usage_bug+0x1f1/0x202
[ 1109.998762] [<ffffffff81012d4f>] ? save_stack_trace+0x2f/0x50
[ 1109.998762] [<ffffffff810a406c>] mark_lock+0x28c/0x2f0
[ 1109.998762] [<ffffffff810a3440>] ? print_irq_inversion_bug.part.46+0x1f0/0x1f0
[ 1109.998762] [<ffffffff810a467d>] __lock_acquire+0x5ad/0x1d80
[ 1109.998762] [<ffffffff810a70dd>] ? trace_hardirqs_on+0xd/0x10
[ 1109.998762] [<ffffffff8108ace8>] ? sched_clock_cpu+0x98/0xc0
[ 1109.998762] [<ffffffff8108ad2b>] ? local_clock+0x1b/0x30
[ 1109.998762] [<ffffffff810a10dc>] ? lock_release_holdtime.part.29+0x1c/0x1a0
[ 1109.998762] [<ffffffff8108aa05>] ? sched_clock_local+0x25/0x90
[ 1109.998762] [<ffffffffa000dec0>] ? tipc_sk_get+0x60/0x80 [tipc]
[ 1109.998762] [<ffffffff810a6555>] lock_acquire+0x95/0x1e0
[ 1109.998762] [<ffffffffa0011969>] ? tipc_sk_rcv+0x49/0x2b0 [tipc]
[ 1109.998762] [<ffffffff810a6fb6>] ? trace_hardirqs_on_caller+0xa6/0x1c0
[ 1109.998762] [<ffffffff81a2d1ce>] _raw_spin_lock+0x3e/0x80
[ 1109.998762] [<ffffffffa0011969>] ? tipc_sk_rcv+0x49/0x2b0 [tipc]
[ 1109.998762] [<ffffffffa000dec0>] ? tipc_sk_get+0x60/0x80 [tipc]
[ 1109.998762] [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc]
[ 1109.998762] [<ffffffffa00076bd>] tipc_rcv+0x5ed/0x960 [tipc]
[ 1109.998762] [<ffffffffa0001d1c>] tipc_l2_rcv_msg+0xcc/0x260 [tipc]
[ 1109.998762] [<ffffffffa0001c90>] ? tipc_l2_rcv_msg+0x40/0x260 [tipc]
[ 1109.998762] [<ffffffff81783345>] __netif_receive_skb_core+0x5e5/0xb70
[ 1109.998762] [<ffffffff81782dc9>] ? __netif_receive_skb_core+0x69/0xb70
[ 1109.998762] [<ffffffff81784eb9>] ? dev_gro_receive+0x259/0x4e0
[ 1109.998762] [<ffffffff817838f6>] __netif_receive_skb+0x26/0x70
[ 1109.998762] [<ffffffff81783acd>] netif_receive_skb_internal+0x2d/0x1f0
[ 1109.998762] [<ffffffff81785518>] napi_gro_receive+0xd8/0x240
[ 1109.998762] [<ffffffff815bf854>] e1000_clean_rx_irq+0x2c4/0x530
[ 1109.998762] [<ffffffff815c1a46>] e1000_clean+0x266/0x9c0
[ 1109.998762] [<ffffffff8108ad2b>] ? local_clock+0x1b/0x30
[ 1109.998762] [<ffffffff8108aa05>] ? sched_clock_local+0x25/0x90
[ 1109.998762] [<ffffffff817842b1>] net_rx_action+0x141/0x310
[ 1109.998762] [<ffffffff810bd710>] ? handle_fasteoi_irq+0xe0/0x150
[ 1109.998762] [<ffffffff81059fa6>] __do_softirq+0x116/0x4d0
[ 1109.998762] [<ffffffff8105a626>] irq_exit+0x96/0xc0
[ 1109.998762] [<ffffffff81a30d07>] do_IRQ+0x67/0x110
[ 1109.998762] [<ffffffff81a2ee2f>] common_interrupt+0x6f/0x6f
[ 1109.998762] <EOI> [<ffffffff8100d2b7>] ? default_idle+0x37/0x250
[ 1109.998762] [<ffffffff8100d2b5>] ? default_idle+0x35/0x250
[ 1109.998762] [<ffffffff8100dd1f>] arch_cpu_idle+0xf/0x20
[ 1109.998762] [<ffffffff810999fd>] cpu_startup_entry+0x27d/0x4d0
[ 1109.998762] [<ffffffff81034c78>] start_secondary+0x188/0x1f0
When intra-node messages are delivered from one process to another
process, tipc_link_xmit() doesn't disable BH before it directly calls
tipc_sk_rcv() on process context to forward messages to destination
socket. Meanwhile, if messages delivered by remote node arrive at the
node and their destinations are also the same socket, tipc_sk_rcv()
running on process context might be preempted by tipc_sk_rcv() running
BH context. As a result, the latter cannot obtain the socket lock as
the lock was obtained by the former, however, the former has no chance
to be run as the latter is owning the CPU now, so headlock happens. To
avoid it, BH should be always disabled in tipc_sk_rcv().
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Locking dependency detected below possible unsafe locking scenario:
CPU0 CPU1
T0: tipc_named_rcv() tipc_rcv()
T1: [grab nametble write lock]* [grab node lock]*
T2: tipc_update_nametbl() tipc_node_link_up()
T3: tipc_nodesub_subscribe() tipc_nametbl_publish()
T4: [grab node lock]* [grab nametble write lock]*
The opposite order of holding nametbl write lock and node lock on
above two different paths may result in a deadlock. If we move the
the updating of the name table after link state named out of node
lock, the reverse order of holding locks will be eliminated, and
as a result, the deadlock risk.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Govindarajulu Varadarajan says:
====================
enic: Bug fixes
This series fixes the following problem.
Please apply this to net.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In enic_stop, we disable preemption using local_bh_disable(). We disable
preemption to wait for busy_poll to finish.
napi_disable should not be called here as it might sleep.
Moving napi_disable() call out side of local_bh_disable.
BUG: sleeping function called from invalid context at include/linux/netdevice.h:477
in_atomic(): 1, irqs_disabled(): 0, pid: 443, name: ifconfig
INFO: lockdep is turned off.
Preemption disabled at:[<ffffffffa029c5c4>] enic_rfs_flw_tbl_free+0x34/0xd0 [enic]
CPU: 31 PID: 443 Comm: ifconfig Not tainted 3.17.0-netnext-05504-g59f35b8 #268
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
ffff8800dac10000 ffff88020b8dfcb8 ffffffff8148a57c 0000000000000000
ffff88020b8dfcd0 ffffffff8107e253 ffff8800dac12a40 ffff88020b8dfd10
ffffffffa029305b ffff88020b8dfd48 ffff8800dac10000 ffff88020b8dfd48
Call Trace:
[<ffffffff8148a57c>] dump_stack+0x4e/0x7a
[<ffffffff8107e253>] __might_sleep+0x123/0x1a0
[<ffffffffa029305b>] enic_stop+0xdb/0x4d0 [enic]
[<ffffffff8138ed7d>] __dev_close_many+0x9d/0xf0
[<ffffffff8138ef81>] __dev_close+0x31/0x50
[<ffffffff813974a8>] __dev_change_flags+0x98/0x160
[<ffffffff81397594>] dev_change_flags+0x24/0x60
[<ffffffff814085fd>] devinet_ioctl+0x63d/0x710
[<ffffffff81139c16>] ? might_fault+0x56/0xc0
[<ffffffff81409ef5>] inet_ioctl+0x65/0x90
[<ffffffff813768e0>] sock_do_ioctl+0x20/0x50
[<ffffffff81376ebb>] sock_ioctl+0x20b/0x2e0
[<ffffffff81197250>] do_vfs_ioctl+0x2e0/0x500
[<ffffffff81492619>] ? sysret_check+0x22/0x5d
[<ffffffff81285f23>] ? __this_cpu_preempt_check+0x13/0x20
[<ffffffff8109fe19>] ? trace_hardirqs_on_caller+0x119/0x270
[<ffffffff811974ac>] SyS_ioctl+0x3c/0x80
[<ffffffff814925ed>] system_call_fastpath+0x1a/0x1f
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The following warning is shown when spinlock debug is enabled.
This occurs when enic_flow_may_expire timer function is running and
enic_stop is called on same CPU.
Fix this by using spink_lock_bh().
=================================
[ INFO: inconsistent lock state ]
3.17.0-netnext-05504-g59f35b8 #268 Not tainted
---------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
ifconfig/443 [HC0[0]:SC0[0]:HE1:SE1] takes:
(&(&enic->rfs_h.lock)->rlock){+.?...}, at:
enic_rfs_flw_tbl_free+0x34/0xd0 [enic]
{IN-SOFTIRQ-W} state was registered at:
[<ffffffff810a25af>] __lock_acquire+0x83f/0x21c0
[<ffffffff810a45f2>] lock_acquire+0xa2/0xd0
[<ffffffff814913fc>] _raw_spin_lock+0x3c/0x80
[<ffffffffa029c3d5>] enic_flow_may_expire+0x25/0x130[enic]
[<ffffffff810bcd07>] call_timer_fn+0x77/0x100
[<ffffffff810bd8e3>] run_timer_softirq+0x1e3/0x270
[<ffffffff8105f9ae>] __do_softirq+0x14e/0x280
[<ffffffff8105fdae>] irq_exit+0x8e/0xb0
[<ffffffff8103da0f>] smp_apic_timer_interrupt+0x3f/0x50
[<ffffffff81493742>] apic_timer_interrupt+0x72/0x80
[<ffffffff81018143>] default_idle+0x13/0x20
[<ffffffff81018a6a>] arch_cpu_idle+0xa/0x10
[<ffffffff81097676>] cpu_startup_entry+0x2c6/0x330
[<ffffffff8103b7ad>] start_secondary+0x21d/0x290
irq event stamp: 2997
hardirqs last enabled at (2997): [<ffffffff81491865>] _raw_spin_unlock_irqrestore+0x65/0x90
hardirqs last disabled at (2996): [<ffffffff814915e6>] _raw_spin_lock_irqsave+0x26/0x90
softirqs last enabled at (2968): [<ffffffff813b57a3>] dev_deactivate_many+0x213/0x260
softirqs last disabled at (2966): [<ffffffff813b5783>] dev_deactivate_many+0x1f3/0x260
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&enic->rfs_h.lock)->rlock);
<Interrupt>
lock(&(&enic->rfs_h.lock)->rlock);
*** DEADLOCK ***
Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When CPU1 is brought out of reset, it's MMU is not turned on yet, so it will
only be able to use physical addresses. For systems with that have the
MMU page configured for 0xC0000000, 0x80000000, or 0x40000000
"BIC 0x40000000" will work just fine, as it was just converting the
virtual address of &cpu1start_addr into a physical address, ie. 0xC0000000
became 0x80000000. So for systems where the SDRAM controller was able to do a
wrap-around access, this was working fine, as it was just dropping the MSB,
but for systems where out of bounds memory access is not allowed, this would
not allow CPU1 to correctly fetch &cpu1start_addr.
This patch fixes the secondary_trampoline code to correctly fetch the
physical address of cpu1start_addr directly. The patch will subtract the
correct PAGE_OFFSET from &cpu1start_addr. And since on this platform, the
physical memory will always start at 0x0, subtracting PAGE_OFFSET from
&cpu1start_addr will allow CPU1 to correctly fetch the value of cpu1start_addr.
While at it, change the name of cpu1start_addr to socfpga_cpu1start_addr
to avoid any future naming collisions for multiplatform image.
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
---
v4: Updated commit log to correctly lay out the usage of PAGE_OFFSET and
add comments to the same effect.
v3: Used PAGE_OFFSET to get the physical address
v2: Correctly get the physical address instead of just a BIC hack.
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git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox framework from Jassi Brar:
"A framework for Mailbox controllers and clients have been cooking for
more than a year now.
Everybody in the CC list had been copied on patchset revisions and
most of them have made sounds of approval, though just one concrete
Reviewed-by. The patchset has also been in linux-next for a couple of
weeks now and no conflict has been reported. The framework has the
backing of at least 5 platforms, though I can't say if/when they
upstream their drivers (some businesses have 'changed')"
(Further acked-by by Arnd Bergmann and Suman Anna in the pull request
thread)
* 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
dt: mailbox: add generic bindings
doc: add documentation for mailbox framework
mailbox: Introduce framework for mailbox
mailbox: rename pl320-ipc specific mailbox.h
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As PCM core handles the multiple linked streams in parallel, lockdep
gets confused (partly because of weak annotations) and spews the
false-positive warnings. This hasn't been a problem for long time but
the latest PCM lock path update seems to have woken up a sleeping
dog.
Here is an attempt to paper over this issue: pass the lock subclass
just calculated from the depth in snd_pcm_action_group(). Also, a
(possibly) wrong lock subclass set in snd_pcm_action_lock_mutex() is
dropped, too.
Reported-and-tested-by: Arthur Marsh <arthur.marsh@internode.on.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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In file included from ./arch/arm64/include/asm/irq_work.h:4:0,
from include/linux/irq_work.h:46,
from include/linux/perf_event.h:49,
from include/linux/ftrace_event.h:9,
from include/trace/syscall.h:6,
from include/linux/syscalls.h:81,
from init/main.c:18:
./arch/arm64/include/asm/smp.h:24:3:
error: #error "<asm/smp.h> included in non-SMP build"
# error "<asm/smp.h> included in non-SMP build"
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: 3631073659d0 ("arm64: Tell irq work about self IPI support")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
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GCC 4.9 complains if we take the difference of two pointers, and it's
printed with "%d". Fix this by using the proper flag - "t" for
ptrdiff_t.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The picvue_proc.c file creates the /proc interface for the PICVUE LCD
display driver. As a result of which, it needs to depend on the PROC_FS
symbol to avoid build problems like the following one when
CONFIG_PROC_FS is not enabled.
arch/mips/lasat/picvue_proc.c:26:14: error: 'pvc_linename'
defined but not used [-Werror=unused-variable]
static char *pvc_linename[PVC_NLINES] = {"line1", "line2"};
^
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8174/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Pull watchdog updates from Wim Van Sebroeck:
- new Cadence WDT driver
- new Ricoh RN5T618 watchdog
- new DA9063 PMIC watchdog driver
- new Meson WDT driver
- add restart handling code
- fixes and improvements
* git://www.linux-watchdog.org/linux-watchdog: (25 commits)
watchdog: meson: remove magic value for reboot
watchdog: Let XILINX_WATCHDOG and TEGRA_WATCHDOG depend on HAS_IOMEM
watchdog: sunxi: Add A31 watchdog support
watchdog: sunxi: support parameterized compatible strings
watchdog: imx2_wdt: add restart handler support
watchdog: qcom: register a restart notifier
watchdog: s3c2410: add restart handler
watchdog: dw_wdt: add restart handler support
ARM: defconfig: update multi_v7_defconfig
ARM: meson: add watchdog driver
ARM: docs: add documentation binding for meson watchdog
stmp3xxx_rtc_wdt: Add suspend/resume PM support
watchdog: Add DA9063 PMIC watchdog driver.
watchdog: add driver for Ricoh RN5T618 watchdog
watchdog: s3c2410_wdt: Add support for Watchdog device on Exynos7
watchdog: qcom: document device tree bindings
watchdog: qcom: add support for KPSS WDT
watchdog: dw_wdt: initialise TOP_INIT in dw_wdt_set_top()
devicetree: Add Cadence WDT devicetree bindings documentation
watchdog: Add Cadence WDT driver
...
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git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED update from Bryan Wu:
"Basically we have some bug fixing and clean up and one big thing is we
start to merge patch to add support LED Flash class"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
leds: gpio: cleanup the leds-gpio driver
led: gpio: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
led: gpio: Sort include headers alphabetically
leds: Improve and export led_update_brightness
leds: trigger: gpio: fix warning in gpio trigger for gpios whose accessor function may sleep
leds: lp3944: fix sparse warning
leds: avoid using DEVICE_ATTR macro for max_brightness attribute
leds: make brightness type consistent across whole subsystem
leds: Reorder include directives
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git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"There are no new drivers here, only a couple of fixes all over the
place"
* tag 'pwm/for-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Let PWM_CLPS711X depend on HAS_IOMEM
pwm: atmel: Fix calculation of prescale value
pwm: Fix uninitialized warnings in pwm_get()
pwm: rockchip: Allow polarity invert on rk3288
pwm: imx: Avoid sample FIFO overflow for i.MX PWM version2
pwm: imx: Cleanup indentation for register definitions
pwm: imx: Fix the macro MX3_PWMCR_PRESCALER(x) definition
pwm: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
pwm: lpss: make it buildable only on X86
pwm: lpss: use c99 initializers in structures
pwm: lpss: Fix build failure on PowerPC
pwm: lpss: pci: Move to use pcim_enable_device()
pwm: lpss: Properly split driver to parts
pwm: lpss: Add ACPI and PCI IDs for Intel Braswell
pwm: fsl-ftm: Select REGMAP_MMIO
pwm: fsl-ftm: Document 'big-endian' property
pwm: fsl-ftm: Convert to direct regmap API usage
pwm: fsl-ftm: Clean up the code
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
"Sorry for the late pull request. Current stuff was ready for a while
but I was hoping to squeeze in support for almost ready ARC SDP
platform (and avoid a 2nd pull request), however it seems there are
still some loose ends which warrant more time.
- Platform code reduction/moving-up (TB10X no longer needs any
callbacks)
- updated boot printing
- kgdb update for arc gdb 7.5
- bug fixes (some marked for stable)
- more code refactoring/consolidation"
* tag 'arc-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: boot: cpu feature print enhancements
ARC: boot: consolidate cross-checking of h/w and s/w
ARC: unbork FPU save/restore
ARC: remove extraneous __KERNEL__ guards
ARC: Update order of registers in KGDB to match GDB 7.5
ARC: Remove unneeded Kconfig entry NO_DMA
ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG))
ARC: refactoring: reduce the scope of some local vars
ARC: remove gcc mpy heuristics
ARC: RIP @running_on_hw
ARC: Update comments about uncached address space
ARC: rename kconfig option for unaligned emulation
ARC: [nsimosci] Allow "headless" models to boot
ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509
ARC: [arcfpga] Remove more dead code
ARC: [plat*] move code out of .init_machine into common
ARC: [arcfpga] consolidate machine description, DT
ARC: Allow SMP kernel to build/boot on UP-only infrastructure
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git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull more powerpc updates from Michael Ellerman:
"Here's some more updates for powerpc for 3.18.
They are a bit late I know, though must are actually bug fixes. In my
defence I nearly cut the top of my finger off last weekend in a
gruesome bike maintenance accident, so I spent a good part of the week
waiting around for doctors. True story, I can send photos if you like :)
Probably the most interesting fix is the sys_call_table one, which
enables syscall tracing for powerpc. There's a fix for HMI handling
for old firmware, more endian fixes for firmware interfaces, more EEH
fixes, Anton fixed our routine that gets the current stack pointer,
and a few other misc bits"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (22 commits)
powerpc: Only do dynamic DMA zone limits on platforms that need it
powerpc: sync pseries_le_defconfig with pseries_defconfig
powerpc: Add printk levels to setup_system output
powerpc/vphn: NUMA node code expects big-endian
powerpc/msi: Use WARN_ON() in msi bitmap selftests
powerpc/msi: Fix the msi bitmap alignment tests
powerpc/eeh: Block CFG upon frozen Shiner adapter
powerpc/eeh: Don't collect logs on PE with blocked config space
powerpc/eeh: Block PCI config access upon frozen PE
powerpc/pseries: Drop config requests in EEH accessors
powerpc/powernv: Drop config requests in EEH accessors
powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED
powerpc/eeh: Fix condition for isolated state
powerpc/pseries: Make CPU hotplug path endian safe
powerpc/pseries: Use dump_stack instead of show_stack
powerpc: Rename __get_SP() to current_stack_pointer()
powerpc: Reimplement __get_SP() as a function not a define
powerpc/numa: Add ability to disable and debug topology updates
powerpc/numa: check error return from proc_create
powerpc/powernv: Fallback to old HMI handling behavior for old firmware
...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"One patch to enable the BPF system call and three more bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/uprobes: fix kprobes dependency
s390: wire up bpf syscall
s390/mm: fixing calls of pte_unmap_unlock
s390/hmcdrv: Restrict s390 HMC driver to S390 arch
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vdso_standalone_test_x86 needs -lgcc_s to build succesfully on 32bit.
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
[ Fixed missing separator issue reported by Paul Bolle <pebolle@tiscali.nl> ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Commit 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery") removed
the #ifdef ISA conditions and switched to runtime detection. However,
according to the instruction set manual, the cop1x_op instructions are
available in >=MIPS32r2 as well. This fixes a problem on MIPS32r2
with the ntpd package which failed to execute with a SIGILL exit code due
to the fact that a madd.d instruction was not being emulated.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery")
Cc: <stable@vger.kernel.org> # v3.16+
Cc: linux-mips@linux-mips.org
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/8173/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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