mlx5e currently assumes that irq affinity is really spread first
irq vectors across device home node cpus, with the new generic affinity
mappings this is no longer the case, hence mlxe should not rely on
this anymore.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Now that we have a generic code to allocate an array
of irq vectors and even correctly spread their affinity,
correctly handle cpu hotplug events and more, were much
better off using it.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
If extended LIDs are being used, a connection request contains
OPA GIDs in them. Extract the lids from the OPA gids and populate
slid/dlid fields in the path records that are created when handling
a connection request.
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
slid field in struct ib_wc is increased to 32 bits.
This enables core components to use larger LIDs if needed.
The user ABI is unchanged and return 16 bit values when queried.
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
sm_lid field in struct ib_port_attr is increased to 32 bits. This
enables core components to use larger LIDs if needed.
The user ABI is unchanged and return 16 bit values when queried.
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
lid field in struct ib_port_attr is increased to 32 bits. This enables core
components to use larger LIDs if needed.
The user ABI is unchanged and return 16 bit values when queried.
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
OPA address handle atttibutes that have 32 bit LIDs would have to
be converted to IB address handle attribute with the LID field
programmed in the GID before copying to user space.
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Store initial FW RF calibration result in driver. Set this calibration
result back to FW after each FW reset in order to avoid future calibration
procedures.
Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
While wil_open is executed, any call to netif_running
would return a success. In case there are failures
within wil_open, should not treat the device as if it
is already opened in relevant functions (like FW recovery
and runtime suspend check).
Fix that by checking the device up flag instead.
Signed-off-by: Hamad Kadmany <qca_hkadmany@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Add statistics for total, min and max suspend time, that
calculates the time the 11ad device was in suspend.
Those statistics will help to estimate the power impact
of d3hot feature.
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Pull rdma fixes from Doug Ledford:
"Third set of -rc fixes for 4.13 cycle
- small set of miscellanous fixes
- a reasonably sizable set of IPoIB fixes that deal with multiple
long standing issues"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/hns: checking for IS_ERR() instead of NULL
RDMA/mlx5: Fix existence check for extended address vector
IB/uverbs: Fix device cleanup
RDMA/uverbs: Prevent leak of reserved field
IB/core: Fix race condition in resolving IP to MAC
IB/ipoib: Notify on modify QP failure only when relevant
Revert "IB/core: Allow QP state transition from reset to error"
IB/ipoib: Remove double pointer assigning
IB/ipoib: Clean error paths in add port
IB/ipoib: Add get statistics support to SRIOV VF
IB/ipoib: Add multicast packets statistics
IB/ipoib: Set IPOIB_NEIGH_TBL_FLUSH after flushed completion initialization
IB/ipoib: Prevent setting negative values to max_nonsrq_conn_qp
IB/ipoib: Make sure no in-flight joins while leaving that mcast
IB/ipoib: Use cancel_delayed_work_sync when needed
IB/ipoib: Fix race between light events and interface restart
Allow any number of command line arguments to match either the
section header or the section contents and create new files.
Create MAINTAINERS.new and SECTION.new.
This allows scripting of the movement of various sections from
MAINTAINERS.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of reading STDIN and writing STDOUT, use specific filenames of
MAINTAINERS and MAINTAINERS.new.
Use hash references instead of global hash %hash so future modifications
can read and write specific hashes to split up MAINTAINERS into multiple
files using a script.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Section [A-Z]: patterns are not currently in any required sorting order.
Add a specific sorting sequence to MAINTAINERS entries.
Sort F: and X: patterns in alphabetic order.
The preferred section ordering is:
SECTION HEADER
M: Maintainers
R: Reviewers
P: Named persons without email addresses
L: Mailing list addresses
S: Status of this section (Supported, Maintained, Orphan, etc...)
W: Any relevant URLs
T: Source code control type (git, quilt, etc)
Q: Patchwork patch acceptance queue site
B: Bug tracking URIs
C: Chat URIs
F: Files with wildcard patterns (alphabetic ordered)
X: Excluded files with wildcard patterns (alphabetic ordered)
N: Files with regex patterns
K: Keyword regexes in source code for maintainership identification
Miscellaneous perl neatening:
- Rename %map to %hash, map has a different meaning in perl
- Avoid using \& and local variables for function indirection
- Use return for a little c like clarity
- Use c-like function call style instead of &function
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Allow for MAINTAINERS to become a directory and if it is,
read all the files in the directory for maintained sections.
Optionally look for all files named MAINTAINERS in directories
excluding the .git directory by using --find-maintainer-files.
This optional feature adds ~.3 seconds of CPU on an Intel
i5-6200 with an SSD.
Miscellanea:
- Create a read_maintainer_file subroutine from the existing code
- Test only the existence of MAINTAINERS, not whether it's a file
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change the default err value to -EINVAL, make sure the card only
has type EXT_CSD_CARD_TYPE_HS400_1_8V also do the signal voltage
setting when select hs400es mode.
Fixes: commit 1720d3545b ("mmc: core: switch to 1V8 or 1V2 for hs400es mode")
Cc: <stable@vger.kernel.org>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Pull SCSI fixes from James Bottomley:
"Two small fixes, one re-fix of a previous fix and five patches sorting
out hotplug in the bnx2X class of drivers. The latter is rather
involved, but necessary because these drivers have started dropping
lockdep recursion warnings on the hotplug lock because of its
conversion to a percpu rwsem"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: sg: only check for dxfer_len greater than 256M
scsi: aacraid: reading out of bounds
scsi: qedf: Limit number of CQs
scsi: bnx2i: Simplify cpu hotplug code
scsi: bnx2fc: Simplify CPU hotplug code
scsi: bnx2i: Prevent recursive cpuhotplug locking
scsi: bnx2fc: Prevent recursive cpuhotplug locking
scsi: bnx2fc: Plug CPU hotplug race
Fix the warning message on the parisc and IA64 architectures to show the
correct function name of the caller by using %pS instead of %pF. The
message is printed with the value of _RET_IP_ which calls
__builtin_return_address(0) and as such returns the IP address caller
instead of pointer to a function descriptor of the caller.
The effect of this patch is visible on the parisc and ia64 architectures
only since those are the ones which use function descriptors while on
all others %pS and %pF will behave the same.
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: eecabf5674 ("random: suppress spammy warnings about unseeded randomness")
Fixes: d06bfd1989 ("random: warn when kernel uses unseeded randomness")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rather than continue adding CPU-specific event maps, instead look up by
default in the PMUv3 event map and only fallback to the CPU-specific maps
if either the event isn't described by PMUv3, or it is described but
the PMCEID registers say that it is unsupported by the current CPU.
Signed-off-by: Will Deacon <will.deacon@arm.com>
If a SES device returns an error on a requested diagnostic page, we are
currently printing an error indicating the wrong page was received. Fix
this up to simply return a failure and only check the returned page when
the diagnostic page buffer was populated by the device.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If blk_queue_get() in st_probe fails, disk->queue must not be set to
SDp->request_queue, as that would result in put_disk() dropping a not
taken reference.
Thus, disk->queue should be set only after a successful blk_queue_get().
Fixes: 2b5bebccd2 ("st: Take additional queue ref in st_probe")
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Acked-by: Shirish Pargaonkar <spargaonkar@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
ARM IORT specification(rev. C) has added provision to define proximity
domain in SMMUv3 IORT table. Adding required code to parse Proximity
domain and set numa_node of smmv3 platform devices.
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
[lorenzo.pieralisi@arm.com: update pr_info()/commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Currently, when unwinding the call stack, we validate the frame pointer
of each frame against frame.sp, whose value is not clearly defined, and
which makes it more difficult to link stack frames together across
different stacks. It is far better to simply check whether the frame
pointer itself points into a valid stack.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Our IRQ_STACK_PTR() and on_irq_stack() helpers both take a cpu argument,
used to generate a percpu address. In all cases, they are passed
{raw_,}smp_processor_id(), so this parameter is redundant.
Since {raw_,}smp_processor_id() use a percpu variable internally, this
approach means we generate a percpu offset to find the current cpu, then
use this to index an array of percpu offsets, which we then use to find
the current CPU's IRQ stack pointer. Thus, most of the work is
redundant.
Instead, we can consistently use raw_cpu_ptr() to generate the CPU's
irq_stack pointer by simply adding the percpu offset to the irq_stack
address, which is simpler in both respects.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Currently, cpu_switch_to and ret_from_fork both live in .entry.text,
though neither form the critical path for an exception entry.
In subsequent patches, we will require that code in .entry.text is part
of the critical path for exception entry, for which we can assume
certain properties (e.g. the presence of exception regs on the stack).
Neither cpu_switch_to nor ret_from_fork will meet these requirements, so
we must move them out of .entry.text. To ensure that neither are kprobed
after being moved out of .entry.text, we must explicitly blacklist them,
requiring a new NOKPROBE() asm helper.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
In most cases, our exception entry assembly branches to C handlers with
a BL instruction, but in cases where we do not expect to return, we use
B instead.
While this is correct today, it means that backtraces for fatal
exceptions miss the entry assembly (as the LR is stale at the point we
call C code), while non-fatal exceptions have the entry assembly in the
LR. In subsequent patches, we will need the LR to be set in these cases
in order to backtrace reliably.
This patch updates these sites to use a BL, ensuring consistency, and
preparing for backtrace rework. An ASM_BUG() is added after each of
these new BLs, which both catches unexpected returns, and ensures that
the LR value doesn't point to another function label.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Currently. we can only use BUG() from C code, though there are
situations where we would like an equivalent mechanism in assembly code.
This patch refactors our BUG() definition such that it can be used in
either C or assembly, in the form of a new ASM_BUG().
The refactoring requires the removal of escape sequences, such as '\n'
and '\t', but these aren't strictly necessary as we can use ';' to
terminate assembler statements.
The low-level assembly is factored out into <asm/asm-bug.h>, with
<asm/bug.h> retained as the C wrapper.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Currently, an error from wakeup_sysfs_add() in
device_set_wakeup_capable() causes the device's power.can_wakeup
flag to remain unset even though the device technically is capable
of signaling wakeup.
If wakeup_sysfs_add() fails user space may not be able to enable
the device to wake up the system from sleep states, but at least
for some devices that does not matter.
For this reason, set or clear power.can_wakeup upfront and if
wakeup_sysfs_add() returns an error, print a message to the log.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
After the commit "a399dc9fc50 cpufreq: shmobile: Use generic platdev
driver", will use cpufreq-dt-platdev driver to enable cpufreq-dt support.
Hence, follow the implementation to support new R8A7795 SoC.
Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
When a PCI device has DMA quirks, we need to ensure that an upstream
IOMMU knows about all possible aliases, since the presence of a DMA
quirk does not preclude the device still also emitting transactions
(e.g. MSIs) on its 'real' RID. Similarly, the rules for bridge aliasing
are relatively complex, and some bridges may only take ownership of
transactions under particular transient circumstances, leading again to
multiple RIDs potentially being seen at the IOMMU for the given device.
Take all this into account in iort_iommu_configure() by mapping every
RID produced by the alias walk, not just whichever one comes out last.
Since adding any more internal PTR_ERR() juggling would have confused me
no end, a bit of refactoring happens in the process - we know where to
find the ops if everything succeeded, so we're free to just pass regular
error codes around up until then.
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CC: Hanjun Guo <hanjun.guo@linaro.org>
CC: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
[lorenzo.pieralisi@arm.com: tagged __get_pci_rid __maybe_unused]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
In r5l_log_endio(), once log->io_list_lock is released, the io unit
may be accessed (or even freed) by other threads. Current code
doesn't handle the io_unit properly, which leads to potential race
conditions.
This patch solves this race condition by:
1. Add a pending_stripe count flush_payload. Multiple flush_payloads
are counted as only one pending_stripe. Flag has_flush_payload is
added to show whether the io unit has flush_payload;
2. In r5l_log_endio(), check flags has_null_flush and
has_flush_payload with log->io_list_lock held. After the lock
is released, this IO unit is only accessed when we know the
pending_stripe counter cannot be zeroed by other threads.
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
In r5c_journal_mode_set(), it is necessary to call mddev_lock()
before accessing conf and conf->log. Otherwise, the conf->log
may change (and become NULL).
Shaohua: fix unlock in failure cases
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
md_write_start() needs to clear the in_sync flag is it is set, or if
there might be a race with set_in_sync() such that the later will
set it very soon. In the later case it is sufficient to take the
spinlock to synchronize with set_in_sync(), and then set the flag
if needed.
The current test is incorrect.
It should be:
if "flag is set" or "race is possible"
"flag is set" is trivially "mddev->in_sync".
"race is possible" should be tested by "mddev->sync_checkers".
If sync_checkers is 0, then there can be no race. set_in_sync() will
wait in percpu_ref_switch_to_atomic_sync() for an RCU grace period,
and as md_write_start() holds the rcu_read_lock(), set_in_sync() will
be sure ot see the update to writes_pending.
If sync_checkers is > 0, there could be race. If md_write_start()
happened entirely between
if (!mddev->in_sync &&
percpu_ref_is_zero(&mddev->writes_pending)) {
and
mddev->in_sync = 1;
in set_in_sync(), then it would not see that is_sync had been set,
and set_in_sync() would not see that writes_pending had been
incremented.
This bug means that in_sync is sometimes not set when it should be.
Consequently there is a small chance that the array will be marked as
"clean" when in fact it is inconsistent.
Fixes: 4ad23a9764 ("MD: use per-cpu counter for writes_pending")
cc: stable@vger.kernel.org (v4.12+)
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
If ->safemode == 1, md_check_recovery() will try to get the mddev lock
and perform various other checks.
If mddev->in_sync is zero, it will call set_in_sync, and clear
->safemode. However if mddev->in_sync is not zero, ->safemode will not
be cleared.
When md_check_recovery() drops the mddev lock, the thread is woken
up again. Normally it would just check if there was anything else to
do, find nothing, and go to sleep. However as ->safemode was not
cleared, it will take the mddev lock again, then wake itself up
when unlocking.
This results in an infinite loop, repeatedly calling
md_check_recovery(), which RCU or the soft-lockup detector
will eventually complain about.
Prior to commit 4ad23a9764 ("MD: use per-cpu counter for
writes_pending"), safemode would only be set to one when the
writes_pending counter reached zero, and would be cleared again
when writes_pending is incremented. Since that patch, safemode
is set more freely, but is not reliably cleared.
So in md_check_recovery() clear ->safemode before checking ->in_sync.
Fixes: 4ad23a9764 ("MD: use per-cpu counter for writes_pending")
Cc: stable@vger.kernel.org (4.12+)
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reported-by: David R <david@unsolicited.net>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Kernel config options should include useful help text; I had to look
up the terms on wikipedia.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
