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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull timer type cleanups from Thomas Gleixner:
"This series does a tree wide cleanup of types related to
timers/timekeeping.
- Get rid of cycles_t and use a plain u64. The type is not really
helpful and caused more confusion than clarity
- Get rid of the ktime union. The union has become useless as we use
the scalar nanoseconds storage unconditionally now. The 32bit
timespec alike storage got removed due to the Y2038 limitations
some time ago.
That leaves the odd union access around for no reason. Clean it up.
Both changes have been done with coccinelle and a small amount of
manual mopping up"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ktime: Get rid of ktime_equal()
ktime: Cleanup ktime_set() usage
ktime: Get rid of the union
clocksource: Use a plain u64 instead of cycle_t
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Pull SMP hotplug notifier removal from Thomas Gleixner:
"This is the final cleanup of the hotplug notifier infrastructure. The
series has been reintgrated in the last two days because there came a
new driver using the old infrastructure via the SCSI tree.
Summary:
- convert the last leftover drivers utilizing notifiers
- fixup for a completely broken hotplug user
- prevent setup of already used states
- removal of the notifiers
- treewide cleanup of hotplug state names
- consolidation of state space
There is a sphinx based documentation pending, but that needs review
from the documentation folks"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/armada-xp: Consolidate hotplug state space
irqchip/gic: Consolidate hotplug state space
coresight/etm3/4x: Consolidate hotplug state space
cpu/hotplug: Cleanup state names
cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
staging/lustre/libcfs: Convert to hotplug state machine
scsi/bnx2i: Convert to hotplug state machine
scsi/bnx2fc: Convert to hotplug state machine
cpu/hotplug: Prevent overwriting of callbacks
x86/msr: Remove bogus cleanup from the error path
bus: arm-ccn: Prevent hotplug callback leak
perf/x86/intel/cstate: Prevent hotplug callback leak
ARM/imx/mmcd: Fix broken cpu hotplug handling
scsi: qedi: Convert to hotplug state machine
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Add a new page flag, PageWaiters, to indicate the page waitqueue has
tasks waiting. This can be tested rather than testing waitqueue_active
which requires another cacheline load.
This bit is always set when the page has tasks on page_waitqueue(page),
and is set and cleared under the waitqueue lock. It may be set when
there are no tasks on the waitqueue, which will cause a harmless extra
wakeup check that will clears the bit.
The generic bit-waitqueue infrastructure is no longer used for pages.
Instead, waitqueues are used directly with a custom key type. The
generic code was not flexible enough to have PageWaiters manipulation
under the waitqueue lock (which simplifies concurrency).
This improves the performance of page lock intensive microbenchmarks by
2-3%.
Putting two bits in the same word opens the opportunity to remove the
memory barrier between clearing the lock bit and testing the waiters
bit, after some work on the arch primitives (e.g., ensuring memory
operand widths match and cover both bits).
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Andrew Lutomirski <luto@kernel.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A page is not added to the swap cache without being swap backed,
so PageSwapBacked mappings can use PG_owner_priv_1 for PageSwapCache.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Andrew Lutomirski <luto@kernel.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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No point in going through loops and hoops instead of just comparing the
values.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
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ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
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ktime is a union because the initial implementation stored the time in
scalar nanoseconds on 64 bit machine and in a endianess optimized timespec
variant for 32bit machines. The Y2038 cleanup removed the timespec variant
and switched everything to scalar nanoseconds. The union remained, but
become completely pointless.
Get rid of the union and just keep ktime_t as simple typedef of type s64.
The conversion was done with coccinelle and some manual mopping up.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
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There is no point in having an extra type for extra confusion. u64 is
unambiguous.
Conversion was done with the following coccinelle script:
@rem@
@@
-typedef u64 cycle_t;
@fix@
typedef cycle_t;
@@
-cycle_t
+u64
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
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The mpic is either the main interrupt controller or is cascaded behind a
GIC. The mpic is single instance and the modes are mutually exclusive, so
there is no reason to have seperate cpu hotplug states.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/20161221192112.333161745@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Even if both drivers are compiled in only one instance can run on a given
system depending on the available GIC version.
So having seperate hotplug states for them is pointless.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/20161221192112.252416267@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Even if both drivers are compiled in only one instance can run on a given
system depending on the available tracer cell.
So having seperate hotplug states for them is pointless.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: http://lkml.kernel.org/r/20161221192112.162765484@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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hotcpu_notifier(), cpu_notifier(), __hotcpu_notifier(), __cpu_notifier(),
register_hotcpu_notifier(), register_cpu_notifier(),
__register_hotcpu_notifier(), __register_cpu_notifier(),
unregister_hotcpu_notifier(), unregister_cpu_notifier(),
__unregister_hotcpu_notifier(), __unregister_cpu_notifier()
are unused now. Remove them and all related code.
Remove also the now pointless cpu notifier error injection mechanism. The
states can be executed step by step and error rollback is the same as cpu
down, so any state transition can be tested w/o requiring the notifier
error injection.
Some CPU hotplug states are kept as they are (ab)used for hotplug state
tracking.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20161221192112.005642358@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Install the callbacks via the state machine. No functional change.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: devel@driverdev.osuosl.org
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: rt@linutronix.de
Cc: lustre-devel@lists.lustre.org
Link: http://lkml.kernel.org/r/20161202110027.htzzeervzkoc4muv@linutronix.de
Link: http://lkml.kernel.org/r/20161221192111.922872524@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Install the callbacks via the state machine. No functional change.
This is the minimal fixup so we can remove the hotplug notifier mess
completely.
The real rework of this driver to use work queues is still stuck in
review/testing on the SCSI mailing list.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: linux-scsi@vger.kernel.org
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: QLogic-Storage-Upstream@qlogic.com
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20161221192111.836895753@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Install the callbacks via the state machine. No functional change.
This is the minimal fixup so we can remove the hotplug notifier mess
completely.
The real rework of this driver to use work queues is still stuck in
review/testing on the SCSI mailing list.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: linux-scsi@vger.kernel.org
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: QLogic-Storage-Upstream@qlogic.com
Cc: Johannes Thumshirn <jth@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20161221192111.757309869@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)
to do the replacement at the end of the merge window.
Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull NTB update from Jon Mason:
- NTB bug fixes for removing an unnecessary call to ntb_peer_spad_read,
and correcting a free_irq inconsistency
- add Intel SKX support
- change the AMD NTB maintainer, and fix some bugs present there
* tag 'ntb-4.10' of git://github.com/jonmason/ntb:
ntb_transport: Remove unnecessary call to ntb_peer_spad_read
NTB: Fix 'request_irq()' and 'free_irq()' inconsistancy
ntb: fix SKX NTB config space size register offsets
NTB: correct ntb_peer_spad_read for case when callback is not supplied.
MAINTAINERS: Change in maintainer for AMD NTB
ntb_transport: Limit memory windows based on available, scratchpads
NTB: Register and offset values fix for memory window
NTB: add support for hotplug feature
ntb: Adding Skylake Xeon NTB support
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Correct ntb_peer_spad_read for case when callback is not supplied
Signed-off-by: Steve Wahl <Steve.Wahl@dell.com>
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
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Pull final vfs updates from Al Viro:
"Assorted cleanups and fixes all over the place"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
ufs: fix function declaration for ufs_truncate_blocks
fs: exec: apply CLOEXEC before changing dumpable task flags
seq_file: reset iterator to first record for zero offset
vfs: fix isize/pos/len checks for reflink & dedupe
[iov_iter] fix iterate_all_kinds() on empty iterators
move aio compat to fs/aio.c
reorganize do_make_slave()
clone_private_mount() doesn't need to touch namespace_sem
remove a bogus claim about namespace_sem being held by callers of mnt_alloc_id()
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Pull rdma fixes from Doug Ledford:
"First round of -rc fixes for 4.10 kernel:
- a series of qedr fixes
- a series of rxe fixes
- one i40iw fix
- one cma fix
- one cxgb4 fix"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/rxe: Don't check for null ptr in send()
IB/rxe: Drop future atomic/read packets rather than retrying
IB/rxe: Use BTH_PSN_MASK when ACKing duplicate sends
qedr: Always notify the verb consumer of flushed CQEs
qedr: clear the vendor error field in the work completion
qedr: post_send/recv according to QP state
qedr: ignore inline flag in read verbs
qedr: modify QP state to error when destroying it
qedr: return correct value on modify qp
qedr: return error if destroy CQ failed
qedr: configure the number of CQEs on CQ creation
i40iw: Set 128B as the only supported RQ WQE size
IB/cma: Fix a race condition in iboe_addr_get_sgid()
IB/rxe: Fix a memory leak in rxe_qp_cleanup()
iw_cxgb4: set correct FetchBurstMax for QPs
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... and fix the minor buglet in compat io_submit() - native one
kills ioctx as cleanup when put_user() fails. Get rid of
bogus compat_... in !CONFIG_AIO case, while we are at it - they
should simply fail with ENOSYS, same as for native counterparts.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull block layer fixes from Jens Axboe:
"Just a set of small fixes that have either been queued up after the
original pull for this merge window, or just missed the original pull
request.
- a few bcache fixes/changes from Eric and Kent
- add WRITE_SAME to the command filter whitelist frm Mauricio
- kill an unused struct member from Ritesh
- partition IO alignment fix from Stefan
- nvme sysfs printf fix from Stephen"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: check partition alignment
nvme : Use correct scnprintf in cmb show
block: allow WRITE_SAME commands with the SG_IO ioctl
block: Remove unused member (busy) from struct blk_queue_tag
bcache: partition support: add 16 minors per bcacheN device
bcache: Make gc wakeup sane, remove set_task_state()
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Pull more ACPI updates from Rafael Wysocki:
"Here are new versions of two ACPICA changes that were deferred
previously due to a problem they had introduced, two cleanups on top
of them and the removal of a useless warning message from the ACPI
core.
Specifics:
- Move some Linux-specific functionality to upstream ACPICA and
update the in-kernel users of it accordingly (Lv Zheng)
- Drop a useless warning (triggered by the lack of an optional
object) from the ACPI namespace scanning code (Zhang Rui)"
* tag 'acpi-extra-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory()
ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
ACPICA: Tables: Allow FADT to be customized with virtual address
ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel
ACPI: do not warn if _BQC does not exist
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Pull x86 cache allocation interface from Thomas Gleixner:
"This provides support for Intel's Cache Allocation Technology, a cache
partitioning mechanism.
The interface is odd, but the hardware interface of that CAT stuff is
odd as well.
We tried hard to come up with an abstraction, but that only allows
rather simple partitioning, but no way of sharing and dealing with the
per package nature of this mechanism.
In the end we decided to expose the allocation bitmaps directly so all
combinations of the hardware can be utilized.
There are two ways of associating a cache partition:
- Task
A task can be added to a resource group. It uses the cache
partition associated to the group.
- CPU
All tasks which are not member of a resource group use the group to
which the CPU they are running on is associated with.
That allows for simple CPU based partitioning schemes.
The main expected user sare:
- Virtualization so a VM can only trash only the associated part of
the cash w/o disturbing others
- Real-Time systems to seperate RT and general workloads.
- Latency sensitive enterprise workloads
- In theory this also can be used to protect against cache side
channel attacks"
[ Intel RDT is "Resource Director Technology". The interface really is
rather odd and very specific, which delayed this pull request while I
was thinking about it. The pull request itself came in early during
the merge window, I just delayed it until things had calmed down and I
had more time.
But people tell me they'll use this, and the good news is that it is
_so_ specific that it's rather independent of anything else, and no
user is going to depend on the interface since it's pretty rare. So if
push comes to shove, we can just remove the interface and nothing will
break ]
* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
x86/intel_rdt: Implement show_options() for resctrlfs
x86/intel_rdt: Call intel_rdt_sched_in() with preemption disabled
x86/intel_rdt: Update task closid immediately on CPU in rmdir and unmount
x86/intel_rdt: Fix setting of closid when adding CPUs to a group
x86/intel_rdt: Update percpu closid immeditately on CPUs affected by changee
x86/intel_rdt: Reset per cpu closids on unmount
x86/intel_rdt: Select KERNFS when enabling INTEL_RDT_A
x86/intel_rdt: Prevent deadlock against hotplug lock
x86/intel_rdt: Protect info directory from removal
x86/intel_rdt: Add info files to Documentation
x86/intel_rdt: Export the minimum number of set mask bits in sysfs
x86/intel_rdt: Propagate error in rdt_mount() properly
x86/intel_rdt: Add a missing #include
MAINTAINERS: Add maintainer for Intel RDT resource allocation
x86/intel_rdt: Add scheduler hook
x86/intel_rdt: Add schemata file
x86/intel_rdt: Add tasks files
x86/intel_rdt: Add cpus file
x86/intel_rdt: Add mkdir to resctrl file system
x86/intel_rdt: Add "info" files to resctrl file system
...
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Code that dereferences the struct net_device ip_ptr member must be
protected with an in_dev_get() / in_dev_put() pair. Hence insert
calls to these functions.
Fixes: commit 7b85627b9f02 ("IB/cma: IBoE (RoCE) IP-based GID addressing")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Moni Shoua <monis@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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* acpica:
ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory()
ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
ACPICA: Tables: Allow FADT to be customized with virtual address
ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel
* acpi-scan:
ACPI: do not warn if _BQC does not exist
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Pull more NFS client updates from Trond Myklebust:
"Highlights include:
- further attribute cache improvements to make revalidation more fine
grained
- NFSv4 locking improvements
Bugfixes:
- nfs4_fl_prepare_ds must be careful about reporting success in files
layout
- pNFS/flexfiles: Instead of marking a device inactive, remove it
from the cache"
* tag 'nfs-for-4.10-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Retry the DELEGRETURN if the embedded GETATTR is rejected with EACCES
NFS: Retry the CLOSE if the embedded GETATTR is rejected with EACCES
NFSv4: Place the GETATTR operation before the CLOSE
NFSv4: Also ask for attributes when downgrading to a READ-only state
NFS: Don't abuse NFS_INO_REVAL_FORCED in nfs_post_op_update_inode_locked()
pNFS: Return RW layouts on OPEN_DOWNGRADE
NFSv4: Add encode/decode of the layoutreturn op in OPEN_DOWNGRADE
NFS: Don't disconnect open-owner on NFS4ERR_BAD_SEQID
NFSv4: ensure __nfs4_find_lock_state returns consistent result.
NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.
pNFS/flexfiles: delete deviceid, don't mark inactive
NFS: Clean up nfs_attribute_timeout()
NFS: Remove unused function nfs_revalidate_inode_rcu()
NFS: Fix and clean up the access cache validity checking
NFS: Only look at the change attribute cache state in nfs_weak_revalidate()
NFS: Clean up cache validity checking
NFS: Don't revalidate the file on close if we hold a delegation
NFSv4: Don't discard the attributes returned by asynchronous DELEGRETURN
NFSv4: Update the attribute cache info in update_changeattr
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Pull scsi target cleanups from Bart Van Assche:
"The changes here are:
- a few small bug fixes for the iSCSI and user space target drivers.
- minimize the target build time by about 30% by rearranging #include
directives
- fix the second argument passed to percpu_ida_alloc()
- reduce the number of false positive warnings reported by sparse
These patches pass Wu Fengguang's build bot tests and also the
linux-next tests"
* 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux:
iscsi-target: Return error if unable to add network portal
target: Fix spelling mistake and unwrap multi-line text
target/iscsi: Fix double free in lio_target_tiqn_addtpg()
target/user: Fix use-after-free of tcmu_cmds if they are expired
target: Minimize #include directives
target/user: Add an #include directive
cxgbit: Add an #include directive
ibmvscsi_tgt: Add two #include directives
sbp-target: Add an #include directive
qla2xxx: Add an #include directive
configfs: Minimize #include directives
usb: gadget: Fix second argument of percpu_ida_alloc()
sbp-target: Fix second argument of percpu_ida_alloc()
target/user: Fix a data type in tcmu_queue_cmd()
target: Use NULL instead of 0 to represent a pointer
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Since all users are cleaned up, remove the 2 deprecated APIs due to no
users.
As a Linux variable rather than an ACPICA variable, acpi_gbl_permanent_mmap
is renamed to acpi_permanent_mmap to have a consistent coding style across
entire Linux ACPI subsystem.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit cac6790954d4d752a083e6122220b8a22febcd07
This patch back ports Linux acpi_get_table_with_size() and
early_acpi_os_unmap_memory() into ACPICA upstream to reduce divergences.
The 2 APIs are used by Linux as table management APIs for long time, it
contains a hidden logic that during the early stage, the mapped tables
should be unmapped before the early stage ends.
During the early stage, tables are handled by the following sequence:
acpi_get_table_with_size();
parse the table
early_acpi_os_unmap_memory();
During the late stage, tables are handled by the following sequence:
acpi_get_table();
parse the table
Linux uses acpi_gbl_permanent_mmap to distinguish the early stage and the
late stage.
The reasoning of introducing acpi_get_table_with_size() is: ACPICA will
remember the early mapped pointer in acpi_get_table() and Linux isn't able to
prevent ACPICA from using the wrong early mapped pointer during the late
stage as there is no API provided from ACPICA to be an inverse of
acpi_get_table() to forget the early mapped pointer.
But how ACPICA can work with the early/late stage requirement? Inside of
ACPICA, tables are ensured to be remained in "INSTALLED" state during the
early stage, and they are carefully not transitioned to "VALIDATED" state
until the late stage. So the same logic is in fact implemented inside of
ACPICA in a different way. The gap is only that the feature is not provided
to the OSPMs in an accessible external API style.
It then is possible to fix the gap by providing an inverse of
acpi_get_table() from ACPICA, so that the two Linux sequences can be
combined:
acpi_get_table();
parse the table
acpi_put_table();
In order to work easier with the current Linux code, acpi_get_table() and
acpi_put_table() is implemented in a usage counting based style:
1. When the usage count of the table is increased from 0 to 1, table is
mapped and .Pointer is set with the mapping address (VALIDATED);
2. When the usage count of the table is decreased from 1 to 0, .Pointer
is unset and the mapping address is unmapped (INVALIDATED).
So that we can deploy the new APIs to Linux with minimal effort by just
invoking acpi_get_table() in acpi_get_table_with_size() and invoking
acpi_put_table() in early_acpi_os_unmap_memory(). Lv Zheng.
Link: https://github.com/acpica/acpica/commit/cac67909
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Pull networking fixes and cleanups from David Miller:
1) Use rb_entry() instead of hardcoded container_of(), from Geliang
Tang.
2) Use correct memory barriers in stammac driver, from Pavel Machek.
3) Fix assoc bind address handling in SCTP, from Xin Long.
4) Make the length check for UFO handling consistent between
__ip_append_data() and ip_finish_output(), from Zheng Li.
5) HSI driver compatible strings were busted fro hix5hd2, from Dongpo
Li.
6) Handle devm_ioremap() errors properly in cavium driver, from Arvind
Yadav.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
RDS: use rb_entry()
net_sched: sch_netem: use rb_entry()
net_sched: sch_fq: use rb_entry()
net/mlx5: use rb_entry()
ethernet: sfc: Add Kconfig entry for vendor Solarflare
sctp: not copying duplicate addrs to the assoc's bind address list
sctp: reduce indent level in sctp_copy_local_addr_list
ARM: dts: hix5hd2: don't change the existing compatible string
net: hix5hd2_gmac: fix compatible strings name
openvswitch: Add a missing break statement.
net: netcp: ethss: fix 10gbe host port tx pri map configuration
net: netcp: ethss: fix errors in ethtool ops
fsl/fman: enable compilation on ARM64
fsl/fman: A007273 only applies to PPC SoCs
powerpc: fsl/fman: remove fsl,fman from of_device_ids[]
fsl/fman: fix 1G support for QSGMII interfaces
dt: bindings: net: use boolean dt properties for eee broken modes
net: phy: use boolean dt properties for eee broken modes
net: phy: fix sign type error in genphy_config_eee_advert
ipv4: Should use consistent conditional judgement for ip fragment in __ip_append_data and ip_finish_output
...
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The patches regarding eee-broken-modes was merged before all people
involved could find an agreement on the best way to move forward.
While we agreed on having a DT property to mark particular modes as broken,
the value used for eee-broken-modes mapped the phy register in very direct
way. Because of this, the concern is that it could be used to implement
configuration policies instead of describing a broken HW.
In the end, having a boolean property for each mode seems to be preferred
over one bit field value mapping the register (too) directly.
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The macro is to be used similarly as WARN_ON as:
if (WARN_ON_RATELIMIT(condition, state))
do_something();
One would expect only 'condition' to affect the 'if', but
WARN_ON_RATELIMIT does internally only:
WARN_ON((condition) && __ratelimit(state))
So the 'if' is affected by the ratelimiting state too. Fix this by
returning 'condition' in any case.
Note that nobody uses WARN_ON_RATELIMIT yet, so there is nothing to
worry about. But I was about to use it and was a bit surprised.
Link: http://lkml.kernel.org/r/20161215093224.23126-1-jslaby@suse.cz
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The TPM PCRs are only reset on a hard reboot. In order to validate a
TPM's quote after a soft reboot (eg. kexec -e), the IMA measurement
list of the running kernel must be saved and restored on boot.
This patch uses the kexec buffer passing mechanism to pass the
serialized IMA binary_runtime_measurements to the next kernel.
Link: http://lkml.kernel.org/r/1480554346-29071-7-git-send-email-zohar@linux.vnet.ibm.com
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: Andreas Steffen <andreas.steffen@strongswan.org>
Cc: Josh Sklar <sklar@linux.vnet.ibm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stewart Smith <stewart@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It can be made static.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Pull quota, fsnotify and ext2 updates from Jan Kara:
"Changes to locking of some quota operations from dedicated quota mutex
to s_umount semaphore, a fsnotify fix and a simple ext2 fix"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: Fix bogus warning in dquot_disable()
fsnotify: Fix possible use-after-free in inode iteration on umount
ext2: reject inodes with negative size
quota: Remove dqonoff_mutex
ocfs2: Use s_umount for quota recovery protection
quota: Remove dqonoff_mutex from dquot_scan_active()
ocfs2: Protect periodic quota syncing with s_umount semaphore
quota: Use s_umount protection for quota operations
quota: Hold s_umount in exclusive mode when enabling / disabling quotas
fs: Provide function to get superblock with exclusive s_umount
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Pull MFD updates from Lee Jones:
"New Device Support
- Add support for Ricoh RC5T619 PMIC to rn5t618
- Add support for PM8821 PMIC to qcom-pm8xxx
New Functionality:
- Add support for GPIO to lpc_ich
- Add support for GPADC to sun4i
- Add ability for rk808 to shutdown
Fix-ups:
- Simplify/strip unnecessary code; tps65218, palmas, tps65217
- Device Tree binding updates; tps65218, altera-a10sr
- Provide/export device ID info; tps65218, axp20x-i2c, hi655x-pmic,
fsl-imx25-tsadc, intel_soc_pmic_bxtwc
- Use MFD API instead of of_platform_populate(); tps65218
- Generalise name-space; pm8xxx
- Supply/edit regmap configuration; axp20x, cs47l24-tables, axp20x
- Enable compile testing; max77620, max77686, exynos-lpass,
abx500-core
- Coding style issues; wm8994-core, wm5102-tables
- Supply endian support; syscon
- Remove module support; ab3100-core, ab8500-debugfs, ab8500-gpadc,
abx500-core
Bug Fixes:
- Fix ordering issues; wm8994
- Fix dependencies (build-time/run-time); exynos_lpass, sun4i-gpadc
- Fix compiler warnings; sun4i-gpadc
- Fix leaks; mfd-core
- Fix page fault during module unload; tps65217"
* tag 'mfd-for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (49 commits)
mfd: tps65217: Support an interrupt pin as the system wakeup
mfd: tps65217: Make an interrupt handler simpler
mfd: tps65217: Update register interrupt mask bits instead of writing operation
mfd: tps65217: Specify the IRQ name
mfd: tps65217: Fix page fault on unloading modules
mfd: palmas: Remove redundant check in palmas_power_off
mfd: arizona: Disable IRQs during driver remove
mfd: pm8xxx: add support to pm8821
mfd: intel-lpss: Try to enable Memory-Write-Invalidate
mfd: rn5t618: Add Ricoh RC5T619 PMIC support
mfd: axp20x: Add address extension registers for AXP806 regmap
mfd: intel_soc_pmic_bxtwc: Fix a typo in MODULE_DEVICE_TABLE()
mfd: core: Fix device reference leak in mfd_clone_cell
mfd: bcm590xx: Simplify a test
mfd: sun4i-gpadc: Select regmap-irq
mfd: abx500-core: drop unused MODULE_ tags from non-modular code
mfd: ab8500: make sysctrl explicitly non-modular
mfd: ab8500-gpadc: Make it explicitly non-modular
mfd: ab8500-debugfs: Make it explicitly non-modular
mfd: ab8500-core: Make it explicitly non-modular
...
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Pull more x86 platform driver updates from Darren Hart:
"Move and add registration for the mlx-platform driver. Introduce
button and lid drivers for the surface3 (different from the
surface3-pro). Add BXT PMIC TMU support. Add Y700 to existing
ideapad-laptop quirk.
Summary:
ideapad-laptop:
- Add Y700 15-ACZ to no_hw_rfkill DMI list
surface3_button:
- Introduce button support for the Surface 3
surface3-wmi:
- Add custom surface3 platform device for controlling LID
- Balance locking on error path
mlx-platform:
- Add mlxcpld-hotplug driver registration
- Fix semicolon.cocci warnings
- Move module from arch/x86
platform/x86:
- Add Whiskey Cove PMIC TMU support"
* tag 'platform-drivers-x86-v4.10-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
platform/x86: surface3-wmi: Balance locking on error path
platform/x86: Add Whiskey Cove PMIC TMU support
platform/x86: ideapad-laptop: Add Y700 15-ACZ to no_hw_rfkill DMI list
platform/x86: Introduce button support for the Surface 3
platform/x86: Add custom surface3 platform device for controlling LID
platform/x86: mlx-platform: Add mlxcpld-hotplug driver registration
platform/x86: mlx-platform: Fix semicolon.cocci warnings
platform/x86: mlx-platform: Move module from arch/x86
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This adds TMU (Time Management Unit) support for Intel BXT platform.
It enables the alarm wake-up functionality in the TMU unit of Whiskey Cove
PMIC.
Signed-off-by: Nilesh Bacchewar <nilesh.bacchewar@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
[andy: resolve merge conflict in Kconfig]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Pull x86 fixes and cleanups from Thomas Gleixner:
"This set of updates contains:
- Robustification for the logical package managment. Cures the AMD
and virtualization issues.
- Put the correct start_cpu() return address on the stack of the idle
task.
- Fixups for the fallout of the nodeid <-> cpuid persistent mapping
modifciations
- Move the x86/MPX specific mm_struct member to the arch specific
mm_context where it belongs
- Cleanups for C89 struct initializers and useless function
arguments"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/floppy: Use designated initializers
x86/mpx: Move bd_addr to mm_context_t
x86/mm: Drop unused argument 'removed' from sync_global_pgds()
ACPI/NUMA: Do not map pxm to node when NUMA is turned off
x86/acpi: Use proper macro for invalid node
x86/smpboot: Prevent false positive out of bounds cpumask access warning
x86/boot/64: Push correct start_cpu() return address
x86/boot/64: Use 'push' instead of 'call' in start_cpu()
x86/smpboot: Make logical package management more robust
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Pull SMP hotplug fixes from Thomas Gleixner:
"Two fixlets for cpu hotplug:
- Fix a subtle ordering problem with the dummy timer. This happened
to work before the conversion by chance due to initcall ordering.
- Fix the function comment for __cpuhp_setup_state()"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Clarify description of __cpuhp_setup_state() return value
clocksource/dummy_timer: Move hotplug callback after the real timers
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Pull networking fixes and cleanups from David Miller:
1) Revert bogus nla_ok() change, from Alexey Dobriyan.
2) Various bpf validator fixes from Daniel Borkmann.
3) Add some necessary SET_NETDEV_DEV() calls to hsis_femac and hip04
drivers, from Dongpo Li.
4) Several ethtool ksettings conversions from Philippe Reynes.
5) Fix bugs in inet port management wrt. soreuseport, from Tom Herbert.
6) XDP support for virtio_net, from John Fastabend.
7) Fix NAT handling within a vrf, from David Ahern.
8) Endianness fixes in dpaa_eth driver, from Claudiu Manoil
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (63 commits)
net: mv643xx_eth: fix build failure
isdn: Constify some function parameters
mlxsw: spectrum: Mark split ports as such
cgroup: Fix CGROUP_BPF config
qed: fix old-style function definition
net: ipv6: check route protocol when deleting routes
r6040: move spinlock in r6040_close as SOFTIRQ-unsafe lock order detected
irda: w83977af_ir: cleanup an indent issue
net: sfc: use new api ethtool_{get|set}_link_ksettings
net: davicom: dm9000: use new api ethtool_{get|set}_link_ksettings
net: cirrus: ep93xx: use new api ethtool_{get|set}_link_ksettings
net: chelsio: cxgb3: use new api ethtool_{get|set}_link_ksettings
net: chelsio: cxgb2: use new api ethtool_{get|set}_link_ksettings
bpf: fix mark_reg_unknown_value for spilled regs on map value marking
bpf: fix overflow in prog accounting
bpf: dynamically allocate digest scratch buffer
gtp: Fix initialization of Flags octet in GTPv1 header
gtp: gtp_check_src_ms_ipv4() always return success
net/x25: use designated initializers
isdn: use designated initializers
...
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Pull partial readlink cleanups from Miklos Szeredi.
This is the uncontroversial part of the readlink cleanup patch-set that
simplifies the default readlink handling.
Miklos and Al are still discussing the rest of the series.
* git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
vfs: make generic_readlink() static
vfs: remove ".readlink = generic_readlink" assignments
vfs: default to generic_readlink()
vfs: replace calling i_op->readlink with vfs_readlink()
proc/self: use generic_readlink
ecryptfs: use vfs_get_link()
bad_inode: add missing i_op initializers
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Pull more vfs updates from Al Viro:
"In this pile:
- autofs-namespace series
- dedupe stuff
- more struct path constification"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits)
ocfs2: implement the VFS clone_range, copy_range, and dedupe_range features
ocfs2: charge quota for reflinked blocks
ocfs2: fix bad pointer cast
ocfs2: always unlock when completing dio writes
ocfs2: don't eat io errors during _dio_end_io_write
ocfs2: budget for extent tree splits when adding refcount flag
ocfs2: prohibit refcounted swapfiles
ocfs2: add newlines to some error messages
ocfs2: convert inode refcount test to a helper
simple_write_end(): don't zero in short copy into uptodate
exofs: don't mess with simple_write_{begin,end}
9p: saner ->write_end() on failing copy into non-uptodate page
fix gfs2_stuffed_write_end() on short copies
fix ceph_write_end()
nfs_write_end(): fix handling of short copies
vfs: refactor clone/dedupe_file_range common functions
fs: try to clone files first in vfs_copy_file_range
vfs: misc struct path constification
namespace.c: constify struct path passed to a bunch of primitives
quota: constify struct path in quota_on
...
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Commit aaac3ba95e4c ("bpf: charge user for creation of BPF maps and
programs") made a wrong assumption of charging against prog->pages.
Unlike map->pages, prog->pages are still subject to change when we
need to expand the program through bpf_prog_realloc().
This can for example happen during verification stage when we need to
expand and rewrite parts of the program. Should the required space
cross a page boundary, then prog->pages is not the same anymore as
its original value that we used to bpf_prog_charge_memlock() on. Thus,
we'll hit a wrap-around during bpf_prog_uncharge_memlock() when prog
is freed eventually. I noticed this that despite having unlimited
memlock, programs suddenly refused to load with EPERM error due to
insufficient memlock.
There are two ways to fix this issue. One would be to add a cached
variable to struct bpf_prog that takes a snapshot of prog->pages at the
time of charging. The other approach is to also account for resizes. I
chose to go with the latter for a couple of reasons: i) We want accounting
rather to be more accurate instead of further fooling limits, ii) adding
yet another page counter on struct bpf_prog would also be a waste just
for this purpose. We also do want to charge as early as possible to
avoid going into the verifier just to find out later on that we crossed
limits. The only place that needs to be fixed is bpf_prog_realloc(),
since only here we expand the program, so we try to account for the
needed delta and should we fail, call-sites check for outcome anyway.
On cBPF to eBPF migrations, we don't grab a reference to the user as
they are charged differently. With that in place, my test case worked
fine.
Fixes: aaac3ba95e4c ("bpf: charge user for creation of BPF maps and programs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Geert rightfully complained that 7bd509e311f4 ("bpf: add prog_digest
and expose it via fdinfo/netlink") added a too large allocation of
variable 'raw' from bss section, and should instead be done dynamically:
# ./scripts/bloat-o-meter kernel/bpf/core.o.1 kernel/bpf/core.o.2
add/remove: 3/0 grow/shrink: 0/0 up/down: 33291/0 (33291)
function old new delta
raw - 32832 +32832
[...]
Since this is only relevant during program creation path, which can be
considered slow-path anyway, lets allocate that dynamically and be not
implicitly dependent on verifier mutex. Move bpf_prog_calc_digest() at
the beginning of replace_map_fd_with_map_ptr() and also error handling
stays straight forward.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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Pull input subsystem updates from Dmitry Torokhov:
- updated support for Synaptics RMI4 devices, including support for
SMBus controllers, firmware update support, sensor tuning, and PS/2
guest support
- ALPS driver now supports tracksticks on SS5 controllers
- i8042 now uses chassis info to skip selftest on Asus laptops as list
of individual models became too unwieldy
- miscellaneous fixes to other drivers
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (67 commits)
Input: imx6ul_tsc - generalize the averaging property
Input: drv260x - use generic device properties
Input: drv260x - use temporary for &client->dev
Input: drv260x - fix input device's parent assignment
Input: synaptics-rmi4 - add support for F34 V7 bootloader
Input: drv260x - fix initializing overdrive voltage
Input: ALPS - fix protcol -> protocol
Input: i8042 - comment #else/#endif of CONFIG_PNP
Input: lpc32xx-keys - fix invalid error handling of a requested irq
Input: synaptics-rmi4 - fix debug for sensor clip
Input: synaptics-rmi4 - store the attn data in the driver
Input: synaptics-rmi4 - allow to add attention data
Input: synaptics-rmi4 - f03 - grab data passed by transport device
Input: synaptics-rmi4 - add support for F03
Input: imx6ul_tsc - convert int to u32
Input: imx6ul_tsc - add mask when set REG_ADC_CFG
Input: synaptics-rmi4 - have only one struct platform data
Input: synaptics-rmi4 - remove EXPORT_SYMBOL_GPL for internal functions
Input: synaptics-rmi4 - remove mutex calls while updating the firmware
Input: drv2667 - fix misuse of regmap_update_bits
...
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Pull MTD updates from Brian Norris:
"Nothing enormous here, though notably we have some of the first work
of a few new maintainers. I think for now I'll still be sending pull
requests, but that's open to change in the future. Summary:
Core:
- dynamic BDI object allocation (resolves some problems when built as
a module)
- cleanups in the ooblayout handling
NAND:
- new tango NAND controller driver
- new ox820 NAND controller driver
- addition of a new full-ID entry in the nand_ids table
- rework of the s3c240 driver to support DT
- extension of the nand_sdr_timings to expose tCCS, tPROG and tR
- addition of a new flag to ask the core to wait for tCCS when
sending a RNDIN/RNDOUT command
- addition of a new flag to ask the core to let the controller driver
send the READ/PROGPAGE command
Minor fixes/cleanup/cosmetic changes:
- properly support 512 ECC step size in the sunxi driver
- improve the error messages in the PXA probe path
- fix module autoload in the omap2 driver
- cleanup of several nand drivers to return nand_scan{_tail}() error
code instead of returning -EIO
- various cleanups in the denali driver
- fix an error check in nandsim
SPI NOR:
- new flash IDs
- wait for Spansion flash to be ready after quad-enable
- error handling fixes for Candence QSPI
- constify some structures in Freescale QSPI driver"
* tag 'for-linus-20161216' of git://git.infradead.org/linux-mtd: (71 commits)
mtd: Allocate bdi objects dynamically
mtd: nand: tango: Add standard legalese header
mtd: maps: add missing iounmap() in error path
mtd: spi-nor: constify fsl_qspi_devtype_data
mtd: spi-nor: Add support for mr25h40
mtd: spi-nor: Add support for N25Q016A
mtd: spi-nor: Add at25df321 spi-nor flash support
mtd: spi-nor: Fix some error codes in cqspi_setup_flash()
mtd: spi-nor: Off by one in cqspi_setup_flash()
mtd: spi-nor: add support for s25fl208k
mtd: spi-nor: fix flags for s25fl128s
mtd: spi-nor: fix spansion quad enable
mtd: spi-nor: add Macronix mx25u25635f to list of known devices.
mtd: mtdswap: fix spelling mistake "erassure" -> "erasure"
mtd: bcm47xxpart: fix parsing first block after aligned TRX
mtd: nand: tango: Use nand_to_mtd() instead of directly accessing chip->mtd
mtd: remove unneeded initializer in mtd_ooblayout_count_bytes()
mtd: use min_t() to refactor mtd_ooblayout_{get, set}_bytes()
mtd: remove unneeded initializer in mtd_ooblayout_{get, set}_bytes()
mtd: nand: nandsim: fix error check
...
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Al Viro
Linus Torvalds
Nicholas Piggin
Thomas Gleixner
Anna-Maria Gleixner
Sebastian Andrzej Siewior
Steven Wahl
Bart Van Assche
Rafael J. Wysocki
Lv Zheng
jbrunet
Jiri Slaby
Mimi Zohar
Trond Myklebust
Nilesh Bacchewar
Daniel Borkmann