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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
Pull slab update from Pekka Enberg:
"Highlights:
- Fix for boot-time problems on some architectures due to
init_lock_keys() not respecting kmalloc_caches boundaries
(Christoph Lameter)
- CONFIG_SLUB_CPU_PARTIAL requested by RT folks (Joonsoo Kim)
- Fix for excessive slab freelist draining (Wanpeng Li)
- SLUB and SLOB cleanups and fixes (various people)"
I ended up editing the branch, and this avoids two commits at the end
that were immediately reverted, and I instead just applied the oneliner
fix in between myself.
* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
slub: Check for page NULL before doing the node_match check
mm/slab: Give s_next and s_stop slab-specific names
slob: Check for NULL pointer before calling ctor()
slub: Make cpu partial slab support configurable
slab: add kmalloc() to kernel API documentation
slab: fix init_lock_keys
slob: use DIV_ROUND_UP where possible
slub: do not put a slab to cpu partial list when cpu_partial is 0
mm/slub: Use node_nr_slabs and node_nr_objs in get_slabinfo
mm/slub: Drop unnecessary nr_partials
mm/slab: Fix /proc/slabinfo unwriteable for slab
mm/slab: Sharing s_next and s_stop between slab and slub
mm/slab: Fix drain freelist excessively
slob: Rework #ifdeffery in slab.h
mm, slab: moved kmem_cache_alloc_node comment to correct place
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At the moment, kmalloc() isn't even listed in the kernel API
documentation (DocBook/kernel-api.html after running "make htmldocs").
Another issue is that the documentation for kmalloc_node()
refers to kcalloc()'s documentation to describe its 'flags' parameter,
while kcalloc() refered to kmalloc()'s documentation, which doesn't exist!
This patch is a proposed fix for this. It also removes the documentation
for kmalloc() in include/linux/slob_def.h which isn't included to
generate the documentation anyway. This way, kmalloc() is described
in only one place.
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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Make the SLOB specific stuff harmonize more with the way the other allocators
do it. Create the typical kmalloc constants for that purpose. SLOB does not
support it but the constants help us avoid #ifdefs.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs stuff from Al Viro:
"O_TMPFILE ABI changes, Oleg's fput() series, misc cleanups, including
making simple_lookup() usable for filesystems with non-NULL s_d_op,
which allows us to get rid of quite a bit of ugliness"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
sunrpc: now we can just set ->s_d_op
cgroup: we can use simple_lookup() now
efivarfs: we can use simple_lookup() now
make simple_lookup() usable for filesystems that set ->s_d_op
configfs: don't open-code d_alloc_name()
__rpc_lookup_create_exclusive: pass string instead of qstr
rpc_create_*_dir: don't bother with qstr
llist: llist_add() can use llist_add_batch()
llist: fix/simplify llist_add() and llist_add_batch()
fput: turn "list_head delayed_fput_list" into llist_head
fs/file_table.c:fput(): add comment
Safer ABI for O_TMPFILE
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just pass the name
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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llist_add(new, head) can simply use llist_add_batch(new, new, head),
no need to duplicate the code.
This obviously uninlines llist_add() and to me this is a win. But we
can make llist_add_batch() inline if this is desirable, in this case
gcc can notice that new_first == new_last if the caller is llist_add().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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1. This is mostly theoretical, but llist_add*() need ACCESS_ONCE().
Otherwise it is not guaranteed that the first cmpxchg() uses the
same value for old_entry and new_last->next.
2. These helpers cache the result of cmpxchg() and read the initial
value of head->first before the main loop. I do not think this
makes sense. In the likely case cmpxchg() succeeds, otherwise
it doesn't hurt to reload head->first.
I think it would be better to simplify the code and simply read
->first before cmpxchg().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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fput() and delayed_fput() can use llist and avoid the locking.
This is unlikely path, it is not that this change can improve
the performance, but this way the code looks simpler.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull networking fixes from David Miller:
"Just a bunch of small fixes and tidy ups:
1) Finish the "busy_poll" renames, from Eliezer Tamir.
2) Fix RCU stalls in IFB driver, from Ding Tianhong.
3) Linearize buffers properly in tun/macvtap zerocopy code.
4) Don't crash on rmmod in vxlan, from Pravin B Shelar.
5) Spinlock used before init in alx driver, from Maarten Lankhorst.
6) A sparse warning fix in bnx2x broke TSO checksums, fix from Dmitry
Kravkov.
7) Dummy and ifb driver load failure paths can oops, fixes from Tan
Xiaojun and Ding Tianhong.
8) Correct MTU calculations in IP tunnels, from Alexander Duyck.
9) Account all TCP retransmits in SNMP stats properly, from Yuchung
Cheng.
10) atl1e and via-rhine do not handle DMA mapping failures properly,
from Neil Horman.
11) Various equal-cost multipath route fixes in ipv6 from Hannes
Frederic Sowa"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (36 commits)
ipv6: only static routes qualify for equal cost multipathing
via-rhine: fix dma mapping errors
atl1e: fix dma mapping warnings
tcp: account all retransmit failures
usb/net/r815x: fix cast to restricted __le32
usb/net/r8152: fix integer overflow in expression
net: access page->private by using page_private
net: strict_strtoul is obsolete, use kstrtoul instead
drivers/net/ieee802154: don't use devm_pinctrl_get_select_default() in probe
drivers/net/ethernet/cadence: don't use devm_pinctrl_get_select_default() in probe
drivers/net/can/c_can: don't use devm_pinctrl_get_select_default() in probe
net/usb: add relative mii functions for r815x
net/tipc: use %*phC to dump small buffers in hex form
qlcnic: Adding Maintainers.
gre: Fix MTU sizing check for gretap tunnels
pkt_sched: sch_qfq: remove forward declaration of qfq_update_agg_ts
pkt_sched: sch_qfq: improve efficiency of make_eligible
gso: Update tunnel segmentation to support Tx checksum offload
inet: fix spacing in assignment
ifb: fix oops when loading the ifb failed
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Rename ndo_ll_poll to ndo_busy_poll.
Rename sk_mark_ll to sk_mark_napi_id.
Rename skb_mark_ll to skb_mark_napi_id.
Correct all useres of these functions.
Update comments and defines in include/net/busy_poll.h
Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
- watchdog fixes for full dynticks
- improved debug output for full dynticks
- remove an obsolete full dynticks check
- two ARM SoC clocksource drivers for sharing across SoCs
- tick broadcast fix for CPU hotplug
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick: broadcast: Check broadcast mode on CPU hotplug
clocksource: arm_global_timer: Add ARM global timer support
clocksource: Add Marvell Orion SoC timer
nohz: Remove obsolete check for full dynticks CPUs to be RCU nocbs
watchdog: Boot-disable by default on full dynticks
watchdog: Rename confusing state variable
watchdog: Register / unregister watchdog kthreads on sysctl control
nohz: Warn if the machine can not perform nohz_full
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Get upstream changes so we can apply fixes against them
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into timers/urgent
Pull nohz updates/fixes from Frederic Weisbecker:
' Note that "watchdog: Boot-disable by default on full dynticks" is a temporary
solution to solve the issue with the watchdog that prevents the tick from
stopping. This is to make sure that 3.11 doesn't have that problem as several
people complained about it.
A proper and longer term solution has been proposed by Peterz:
http://lkml.kernel.org/r/20130618103632.GO3204@twins.programming.kicks-ass.net
'
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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We have two very conflicting state variable names in the
watchdog:
* watchdog_enabled: This one reflects the user interface. It's
set to 1 by default and can be overriden with boot options
or sysctl/procfs interface.
* watchdog_disabled: This is the internal toggle state that
tells if watchdog threads, timers and NMI events are currently
running or not. This state mostly depends on the user settings.
It's a convenient state latch.
Now we really need to find clearer names because those
are just too confusing to encourage deep review.
watchdog_enabled now becomes watchdog_user_enabled to reflect
its purpose as an interface.
watchdog_disabled becomes watchdog_running to suggest its
role as a pure internal state.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Anish Singh <anish198519851985@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Don Zickus <dzickus@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking updates from Thomas Gleixner:
"Header cleanup as requested by Linus"
(This is the "don't include support for ww_mutex in a header file that
everybody wants, when almost nobody wants the ww part" change)
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mutex: Move ww_mutex definitions to ww_mutex.h
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Move the definitions for wound/wait mutexes out to a separate
header, ww_mutex.h. This reduces clutter in mutex.h, and
increases readability.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Dave Airlie <airlied@gmail.com>
Link: http://lkml.kernel.org/r/51D675DC.3000907@canonical.com
[ Tidied up the code a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull InfiniBand/RDMA changes from Roland Dreier:
- AF_IB (native IB addressing) for CMA from Sean Hefty
- new mlx5 driver for Mellanox Connect-IB adapters (including post
merge request fixes)
- SRP fixes from Bart Van Assche (including fix to first merge request)
- qib HW driver updates
- resurrection of ocrdma HW driver development
- uverbs conversion to create fds with O_CLOEXEC set
- other small changes and fixes
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (66 commits)
mlx5: Return -EFAULT instead of -EPERM
IB/qib: Log all SDMA errors unconditionally
IB/qib: Fix module-level leak
mlx5_core: Adjust hca_cap.uar_page_sz to conform to Connect-IB spec
IB/srp: Let srp_abort() return FAST_IO_FAIL if TL offline
IB/uverbs: Use get_unused_fd_flags(O_CLOEXEC) instead of get_unused_fd()
mlx5_core: Fixes for sparse warnings
IB/mlx5: Make profile[] static in main.c
mlx5: Fix parameter type of health_handler_t
mlx5: Add driver for Mellanox Connect-IB adapters
IB/core: Add reserved values to enums for low-level driver use
IB/srp: Bump driver version and release date
IB/srp: Make HCA completion vector configurable
IB/srp: Maintain a single connection per I_T nexus
IB/srp: Fail I/O fast if target offline
IB/srp: Skip host settle delay
IB/srp: Avoid skipping srp_reset_host() after a transport error
IB/srp: Fix remove_one crash due to resource exhaustion
IB/qib: New transmitter tunning settings for Dell 1.1 backplane
IB/core: Fix error return code in add_port()
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Sparse reported an endianness bug in the assignment to hca_cap.uar_page_sz.
Fix the declaration of this field to be __be16 (which is what is in
the firmware spec), renaming the field to log_uar_pg_size to conform
to the spec, which fixes the endianness bug reported by sparse.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Moshe Lazer <moshel@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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into for-next
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This deals with the sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/health.c:94:54: warning: incorrect type in argument 2 (different address spaces)
drivers/net/ethernet/mellanox/mlx5/core/health.c:94:54: expected void *buf
drivers/net/ethernet/mellanox/mlx5/core/health.c:94:54: got struct health_buffer [noderef] <asn:2>*health
Signed-off-by: Roland Dreier <roland@purestorage.com>
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The driver is comprised of two kernel modules: mlx5_ib and mlx5_core.
This partitioning resembles what we have for mlx4, except that mlx5_ib
is the pci device driver and not mlx5_core.
mlx5_core is essentially a library that provides general functionality
that is intended to be used by other Mellanox devices that will be
introduced in the future. mlx5_ib has a similar role as any hardware
device under drivers/infiniband/hw.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
[ Merge in coccinelle fixes from Fengguang Wu <fengguang.wu@intel.com>.
- Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Define AF_IB and sockaddr_ib to allow the rdma_cm to use native IB
addressing.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Pull device-mapper changes from Alasdair G Kergon:
"Add a device-mapper target called dm-switch to provide a multipath
framework for storage arrays that dynamically reconfigure their
preferred paths for different device regions.
Fix a bug in the verity target that prevented its use with some
specific sizes of devices.
Improve some locking mechanisms in the device-mapper core and bufio.
Add Mike Snitzer as a device-mapper maintainer.
A few more clean-ups and fixes"
* tag 'dm-3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
dm: add switch target
dm: update maintainers
dm: optimize reorder structure
dm: optimize use SRCU and RCU
dm bufio: submit writes outside lock
dm cache: fix arm link errors with inline
dm verity: use __ffs and __fls
dm flakey: correct ctr alloc failure mesg
dm verity: remove pointless comparison
dm: use __GFP_HIGHMEM in __vmalloc
dm verity: fix inability to use a few specific devices sizes
dm ioctl: set noio flag to avoid __vmalloc deadlock
dm mpath: fix ioctl deadlock when no paths
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This patch removes "io_lock" and "map_lock" in struct mapped_device and
"holders" in struct dm_table and replaces these mechanisms with
sleepable-rcu.
Previously, the code would call "dm_get_live_table" and "dm_table_put" to
get and release table. Now, the code is changed to call "dm_get_live_table"
and "dm_put_live_table". dm_get_live_table locks sleepable-rcu and
dm_put_live_table unlocks it.
dm_get_live_table_fast/dm_put_live_table_fast can be used instead of
dm_get_live_table/dm_put_live_table. These *_fast functions use
non-sleepable RCU, so the caller must not block between them.
If the code changes active or inactive dm table, it must call
dm_sync_table before destroying the old table.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Pull core block IO updates from Jens Axboe:
"Here are the core IO block bits for 3.11. It contains:
- A tweak to the reserved tag logic from Jan, for weirdo devices with
just 3 free tags. But for those it improves things substantially
for random writes.
- Periodic writeback fix from Jan. Marked for stable as well.
- Fix for a race condition in IO scheduler switching from Jianpeng.
- The hierarchical blk-cgroup support from Tejun. This is the grunt
of the series.
- blk-throttle fix from Vivek.
Just a note that I'm in the middle of a relocation, whole family is
flying out tomorrow. Hence I will be awal the remainder of this week,
but back at work again on Monday the 15th. CC'ing Tejun, since any
potential "surprises" will most likely be from the blk-cgroup work.
But it's been brewing for a while and sitting in my tree and
linux-next for a long time, so should be solid."
* 'for-3.11/core' of git://git.kernel.dk/linux-block: (36 commits)
elevator: Fix a race in elevator switching
block: Reserve only one queue tag for sync IO if only 3 tags are available
writeback: Fix periodic writeback after fs mount
blk-throttle: implement proper hierarchy support
blk-throttle: implement throtl_grp->has_rules[]
blk-throttle: Account for child group's start time in parent while bio climbs up
blk-throttle: add throtl_qnode for dispatch fairness
blk-throttle: make throtl_pending_timer_fn() ready for hierarchy
blk-throttle: make tg_dispatch_one_bio() ready for hierarchy
blk-throttle: make blk_throtl_bio() ready for hierarchy
blk-throttle: make blk_throtl_drain() ready for hierarchy
blk-throttle: dispatch from throtl_pending_timer_fn()
blk-throttle: implement dispatch looping
blk-throttle: separate out throtl_service_queue->pending_timer from throtl_data->dispatch_work
blk-throttle: set REQ_THROTTLED from throtl_charge_bio() and gate stats update with it
blk-throttle: implement sq_to_tg(), sq_to_td() and throtl_log()
blk-throttle: add throtl_service_queue->parent_sq
blk-throttle: generalize update_disptime optimization in blk_throtl_bio()
blk-throttle: dispatch to throtl_data->service_queue.bio_lists[]
blk-throttle: move bio_lists[] and friends to throtl_service_queue
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There's a race between elevator switching and normal io operation.
Because the allocation of struct elevator_queue and struct elevator_data
don't in a atomic operation.So there are have chance to use NULL
->elevator_data.
For example:
Thread A: Thread B
blk_queu_bio elevator_switch
spin_lock_irq(q->queue_block) elevator_alloc
elv_merge elevator_init_fn
Because call elevator_alloc, it can't hold queue_lock and the
->elevator_data is NULL.So at the same time, threadA call elv_merge and
nedd some info of elevator_data.So the crash happened.
Move the elevator_alloc into func elevator_init_fn, it make the
operations in a atomic operation.
Using the follow method can easy reproduce this bug
1:dd if=/dev/sdb of=/dev/null
2:while true;do echo noop > scheduler;echo deadline > scheduler;done
The test method also use this method.
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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With the recent updates, blk-throttle is finally ready for proper
hierarchy support. Dispatching now honors service_queue->parent_sq
and propagates correctly. The only thing missing is setting
->parent_sq correctly so that throtl_grp hierarchy matches the cgroup
hierarchy.
This patch updates throtl_pd_init() such that service_queues form the
same hierarchy as the cgroup hierarchy if sane_behavior is enabled.
As this concludes proper hierarchy support for blkcg, the shameful
.broken_hierarchy tag is removed from blkio_subsys.
v2: Updated blkio-controller.txt as suggested by Vivek.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Li Zefan <lizefan@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc
Pull remoteproc fixes from Ohad Ben-Cohen:
"Trivial remoteproc fixes by Suman Anna, Wei Yongjun and Thomas Meyer"
* tag 'remoteproc-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
remoteproc: Cocci spatch "memdup.spatch"
remoteproc: free carveout memories only after unmapping them
remoteproc/omap: fix a sparse warning
remoteproc: fix checkpatch errors in remoteproc code
remoteproc: fix error return code in rproc_fw_boot()
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This patch fixes a sparse warning in the omap remoteproc code
when OMAP_REMOTEPROC is disabled.
include/linux/platform_data/remoteproc-omap.h:76:13: warning: symbol 'omap_rproc_reserve_cma' was not declared. Should it be static?
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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Pull Xtensa updates from Chris Zankel.
* tag 'xtensa-next-20130710' of git://github.com/czankel/xtensa-linux: (22 commits)
xtensa: remove the second argument of __bio_kmap_atomic()
xtensa: add static function tracer support
xtensa: Flat DeviceTree copy not future-safe
xtensa: check TLB sanity on return to userspace
xtensa: adjust boot parameters address when INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is selected
xtensa: bootparams: fix typo
xtensa: tell git to ignore generated .dtb files
xtensa: ccount based sched_clock
xtensa: ccount based clockevent implementation
xtensa: consolidate ccount access routines
xtensa: cleanup ccount frequency tracking
xtensa: timex.h: remove unused symbols
xtensa: tell git to ignore copied zlib source files
xtensa: fix section mismatch in pcibios_fixup_bus
xtensa: ISS: fix section mismatch in iss_net_setup
arch: xtensa: include: asm: compiling issue, need cmpxchg64() defined.
xtensa: xtfpga: fix section mismatch
xtensa: remove unused platform_init_irq()
xtensa: tell git to ignore generated files
xtensa: flush TLB entries for pages of non-current mm correctly
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kmap_atomic allows only one argument now, just remove the unused 'kmtype'.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Chris Zankel <chris@zankel.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management and ACPI updates from Rafael Wysocki:
- Fix for a recent cpufreq regression that caused WARN() to trigger
overzealously in a couple of places and spam the kernel log with
useless garbage as a result. From Viresh Kumar.
- ACPI dock fix removing a discrepancy between the definition of
acpi_dock_init(), which says that the function returns int, and its
header in the header file, which says that it is a void function.
The function is now defined as void too.
- ACPI PM fix for failures to update device power states as needed, for
example, during resume from system suspend, because the old state was
deeper than the new one, but the new one is not D0.
- Fix for two debug messages in the ACPI power resources code that
don't have a newline at the end and make the kernel log difficult to
read. From Mika Westerberg.
- Two ACPI cleanups from Naresh Bhat and Haicheng Li.
- cpupower updates from Thomas Renninger, including Intel Haswell
support improvements and a new idle-set subcommand among other
things.
* tag 'pm+acpi-3.11-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / power: add missing newline to debug messages
cpupower: Add Haswell family 0x45 specific idle monitor to show PC8,9,10 states
cpupower: Haswell also supports the C-states introduced with SandyBridge
cpupower: Introduce idle-set subcommand and C-state enabling/disabling
cpupower: Implement disabling of cstate interface
cpupower: Make idlestate usage unsigned
ACPI / fan: Initialize acpi_state variable
ACPI / scan: remove unused LIST_HEAD(acpi_device_list)
ACPI / dock: Actually define acpi_dock_init() as void
ACPI / PM: Fix corner case in acpi_bus_update_power()
cpufreq: Fix serialization of frequency transitions
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Commit 7c30ed ("cpufreq: make sure frequency transitions are serialized")
interacts poorly with systems that have a single core freqency for all
cores. On such systems we have a single policy for all cores with
several CPUs. When we do a frequency transition the governor calls the
pre and post change notifiers which causes cpufreq_notify_transition()
per CPU. Since the policy is the same for all of them all CPUs after
the first and the warnings added are generated by checking a per-policy
flag the warnings will be triggered for all cores after the first.
Fix this by allowing notifier to be called for n times. Where n is the number of
cpus in policy->cpus.
Reported-and-tested-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
"There are not too many changes this time, except two new platform
thermal drivers, ti-soc-thermal driver and x86_pkg_temp_thermal
driver, and a couple of small fixes.
Highlights:
- move the ti-soc-thermal driver out of the staging tree to the
thermal tree.
- introduce the x86_pkg_temp_thermal driver. This driver registers
CPU digital temperature package level sensor as a thermal zone.
- small fixes/cleanups including removing redundant use of
platform_set_drvdata() and of_match_ptr for all platform thermal
drivers"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (34 commits)
thermal: cpu_cooling: fix stub function
thermal: ti-soc-thermal: use standard GPIO DT bindings
thermal: MAINTAINERS: Add git tree path for SoC specific updates
thermal: fix x86_pkg_temp_thermal.c build and Kconfig
Thermal: Documentation for x86 package temperature thermal driver
Thermal: CPU Package temperature thermal
thermal: consider emul_temperature while computing trend
thermal: ti-soc-thermal: add DT example for DRA752 chip
thermal: ti-soc-thermal: add dra752 chip to device table
thermal: ti-soc-thermal: add thermal data for DRA752 chips
thermal: ti-soc-thermal: remove usage of IS_ERR_OR_NULL
thermal: ti-soc-thermal: freeze FSM while computing trend
thermal: ti-soc-thermal: remove external heat while extrapolating hotspot
thermal: ti-soc-thermal: update DT reference for OMAP5430
x86, mcheck, therm_throt: Process package thresholds
thermal: cpu_cooling: fix 'descend' check in get_property()
Thermal: spear: Remove redundant use of of_match_ptr
Thermal: kirkwood: Remove redundant use of of_match_ptr
Thermal: dove: Remove redundant use of of_match_ptr
Thermal: armada: Remove redundant use of of_match_ptr
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The function stub for cpufreq_cooling_get_level introduced
in 57df81069 "Thermal: exynos: fix cooling state translation"
is not syntactically correct C and needs to be fixed to avoid
this error:
In file included from drivers/thermal/db8500_thermal.c:20:0:
include/linux/cpu_cooling.h: In function 'cpufreq_cooling_get_level':
include/linux/cpu_cooling.h:57:1:
error: parameter name omitted unsigned long cpufreq_cooling_get_level(unsigned int, unsigned int) ^
include/linux/cpu_cooling.h:57:1: error: parameter name omitted
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Amit Daniel kachhap <amit.daniel@samsung.com>
Cc: stable@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
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Pull second set of NFS client updates from Trond Myklebust:
"This mainly contains some small readdir optimisations that had
dependencies on Al Viro's readdir rewrite. There is also a fix for a
nasty deadlock which surfaced earlier in this merge window.
Highlights include:
- Fix an_rpc pipefs regression that causes a deadlock on mount
- Readdir optimisations by Scott Mayhew and Jeff Layton
- clean up the rpc_pipefs dentry operation setup"
* tag 'nfs-for-3.11-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Fix a deadlock in rpc_client_register()
rpc_pipe: rpc_dir_inode_operations can be static
NFS: Allow nfs_updatepage to extend a write under additional circumstances
NFS: Make nfs_readdir revalidate less often
NFS: Make nfs_attribute_cache_expired() non-static
rpc_pipe: set dentry operations at d_alloc time
nfs: set verifier on existing dentries in nfs_prime_dcache
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NFS: Make nfs_attribute_cache_expired() non-static so we can call it from
nfs_readdir().
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Pull nfsd changes from Bruce Fields:
"Changes this time include:
- 4.1 enabled on the server by default: the last 4.1-specific issues
I know of are fixed, so we're not going to find the rest of the
bugs without more exposure.
- Experimental support for NFSv4.2 MAC Labeling (to allow running
selinux over NFS), from Dave Quigley.
- Fixes for some delicate cache/upcall races that could cause rare
server hangs; thanks to Neil Brown and Bodo Stroesser for extreme
debugging persistence.
- Fixes for some bugs found at the recent NFS bakeathon, mostly v4
and v4.1-specific, but also a generic bug handling fragmented rpc
calls"
* 'for-3.11' of git://linux-nfs.org/~bfields/linux: (31 commits)
nfsd4: support minorversion 1 by default
nfsd4: allow destroy_session over destroyed session
svcrpc: fix failures to handle -1 uid's
sunrpc: Don't schedule an upcall on a replaced cache entry.
net/sunrpc: xpt_auth_cache should be ignored when expired.
sunrpc/cache: ensure items removed from cache do not have pending upcalls.
sunrpc/cache: use cache_fresh_unlocked consistently and correctly.
sunrpc/cache: remove races with queuing an upcall.
nfsd4: return delegation immediately if lease fails
nfsd4: do not throw away 4.1 lock state on last unlock
nfsd4: delegation-based open reclaims should bypass permissions
svcrpc: don't error out on small tcp fragment
svcrpc: fix handling of too-short rpc's
nfsd4: minor read_buf cleanup
nfsd4: fix decoding of compounds across page boundaries
nfsd4: clean up nfs4_open_delegation
NFSD: Don't give out read delegations on creates
nfsd4: allow client to send no cb_sec flavors
nfsd4: fail attempts to request gss on the backchannel
nfsd4: implement minimal SP4_MACH_CRED
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commit d202cce8963d9268ff355a386e20243e8332b308
sunrpc: never return expired entries in sunrpc_cache_lookup
moved the 'entry is expired' test from cache_check to
sunrpc_cache_lookup, so that it happened early and some races could
safely be ignored.
However the ip_map (in svcauth_unix.c) has a separate single-item
cache which allows quick lookup without locking. An entry in this
case would not be subject to the expiry test and so could be used
well after it has expired.
This is not normally a big problem because the first time it is used
after it is expired an up-call will be scheduled to refresh the entry
(if it hasn't been scheduled already) and the old entry will then
be invalidated. So on the second attempt to use it after it has
expired, ip_map_cached_get will discard it.
However that is subtle and not ideal, so replace the "!cache_valid"
test with "cache_is_expired".
In doing this we drop the test on the "CACHE_VALID" bit. This is
unnecessary as the bit is never cleared, and an entry will only
be cached if the bit is set.
Reported-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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It is possible for a race to set CACHE_PENDING after cache_clean()
has removed a cache entry from the cache.
If CACHE_PENDING is still set when the entry is finally 'put',
the cache_dequeue() will never happen and we can leak memory.
So set a new flag 'CACHE_CLEANED' when we remove something from
the cache, and don't queue any upcall if it is set.
If CACHE_PENDING is set before CACHE_CLEANED, the call that
cache_clean() makes to cache_fresh_unlocked() will free memory
as needed. If CACHE_PENDING is set after CACHE_CLEANED, the
test in sunrpc_cache_pipe_upcall will ensure that the memory
is not allocated.
Reported-by: <bstroesser@ts.fujitsu.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Store a pointer to the gss mechanism used in the rq_cred and cl_cred.
This will make it easier to enforce SP4_MACH_CRED, which needs to
compare the mechanism used on the exchange_id with that used on
protected operations.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Common helper to zero out fields of the svc_cred.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing changes from Steven Rostedt:
"The majority of the changes here are cleanups for the large changes
that were added to 3.10, which includes several bug fixes that have
been marked for stable.
As for new features, there were a few, but nothing to write to LWN
about. These include:
New function trigger called "dump" and "cpudump" that will cause
ftrace to dump its buffer to the console when the function is called.
The difference between "dump" and "cpudump" is that "dump" will dump
the entire contents of the ftrace buffer, where as "cpudump" will only
dump the contents of the ftrace buffer for the CPU that called the
function.
Another small enhancement is a new sysctl switch called
"traceoff_on_warning" which, when enabled, will disable tracing if any
WARN_ON() is triggered. This is useful if you want to debug what
caused a warning and do not want to risk losing your trace data by the
ring buffer overwriting the data before you can disable it. There's
also a kernel command line option that will make this enabled at boot
up called the same thing"
* tag 'trace-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (34 commits)
tracing: Make tracing_open_generic_{tr,tc}() static
tracing: Remove ftrace() function
tracing: Remove TRACE_EVENT_TYPE enum definition
tracing: Make tracer_tracing_{off,on,is_on}() static
tracing: Fix irqs-off tag display in syscall tracing
uprobes: Fix return value in error handling path
tracing: Fix race between deleting buffer and setting events
tracing: Add trace_array_get/put() to event handling
tracing: Get trace_array ref counts when accessing trace files
tracing: Add trace_array_get/put() to handle instance refs better
tracing: Protect ftrace_trace_arrays list in trace_events.c
tracing: Make trace_marker use the correct per-instance buffer
ftrace: Do not run selftest if command line parameter is set
tracing/kprobes: Don't pass addr=ip to perf_trace_buf_submit()
tracing: Use flag buffer_disabled for irqsoff tracer
tracing/kprobes: Turn trace_probe->files into list_head
tracing: Fix disabling of soft disable
tracing: Add missing syscall_metadata comment
tracing: Simplify code for showing of soft disabled flag
tracing/kprobes: Kill probe_enable_lock
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Add a traceoff_on_warning option in both the kernel command line as well
as a sysctl option. When set, any WARN*() function that is hit will cause
the tracing_on variable to be cleared, which disables writing to the
ring buffer.
This is useful especially when tracing a bug with function tracing. When
a warning is hit, the print caused by the warning can flood the trace with
the functions that producing the output for the warning. This can make the
resulting trace useless by either hiding where the bug happened, or worse,
by overflowing the buffer and losing the trace of the bug totally.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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This is a leftover after ftrace_regex_lseek() was renamed to
ftrace_filter_lseek() and then ftrace_filter_lseek() was moved
out side of CONFIG_DYNAMIC_FTRACE.
Link: http://lkml.kernel.org/r/51B1A1BD.40905@huawei.com
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Merge more patches from Andrew Morton:
"The rest of MM"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: remove free_area_cache
zswap: add documentation
zswap: add to mm/
zbud: add to mm/
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Since all architectures have been converted to use vm_unmapped_area(),
there is no remaining use for the free_area_cache.
Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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zbud is an special purpose allocator for storing compressed pages. It
is designed to store up to two compressed pages per physical page.
While this design limits storage density, it has simple and
deterministic reclaim properties that make it preferable to a higher
density approach when reclaim will be used.
zbud works by storing compressed pages, or "zpages", together in pairs
in a single memory page called a "zbud page". The first buddy is "left
justifed" at the beginning of the zbud page, and the last buddy is
"right justified" at the end of the zbud page. The benefit is that if
either buddy is freed, the freed buddy space, coalesced with whatever
slack space that existed between the buddies, results in the largest
possible free region within the zbud page.
zbud also provides an attractive lower bound on density. The ratio of
zpages to zbud pages can not be less than 1. This ensures that zbud can
never "do harm" by using more pages to store zpages than the
uncompressed zpages would have used on their own.
This implementation is a rewrite of the zbud allocator internally used
by zcache in the driver/staging tree. The rewrite was necessary to
remove some of the zcache specific elements that were ingrained
throughout and provide a generic allocation interface that can later be
used by zsmalloc and others.
This patch adds zbud to mm/ for later use by zswap.
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Jenifer Hopper <jhopper@us.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: Joe Perches <joe@perches.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull module updates from Rusty Russell:
"Nothing interesting. Except the most embarrassing bugfix ever. But
let's ignore that"
* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
module: cleanup call chain.
module: do percpu allocation after uniqueness check. No, really!
modules: don't fail to load on unknown parameters.
ABI: Clarify when /sys/module/MODULENAME is created
There is no /sys/parameters
module: don't modify argument of module_kallsyms_lookup_name()
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