linux-2.6-microblaze.git
2 years agogenirq/msi: Convert storage to xarray
Thomas Gleixner [Mon, 6 Dec 2021 22:51:52 +0000 (23:51 +0100)]
genirq/msi: Convert storage to xarray

The current linked list storage for MSI descriptors is suboptimal in
several ways:

  1) Looking up a MSI desciptor requires a O(n) list walk in the worst case

  2) The upcoming support of runtime expansion of MSI-X vectors would need
     to do a full list walk to figure out whether a particular index is
     already associated.

  3) Runtime expansion of sparse allocations is even more complex as the
     current implementation assumes an ordered list (increasing MSI index).

Use an xarray which solves all of the above problems nicely.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.280627070@linutronix.de
2 years agogenirq/msi: Simplify sysfs handling
Thomas Gleixner [Mon, 6 Dec 2021 22:51:50 +0000 (23:51 +0100)]
genirq/msi: Simplify sysfs handling

The sysfs handling for MSI is a convoluted maze and it is in the way of
supporting dynamic expansion of the MSI-X vectors because it only supports
a one off bulk population/free of the sysfs entries.

Change it to do:

   1) Creating an empty sysfs attribute group when msi_device_data is
      allocated

   2) Populate the entries when the MSI descriptor is initialized

   3) Free the entries when a MSI descriptor is detached from a Linux
      interrupt.

   4) Provide functions for the legacy non-irqdomain fallback code to
      do a bulk population/free. This code won't support dynamic
      expansion.

This makes the code simpler and reduces the number of allocations as the
empty attribute group can be shared.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.224917330@linutronix.de
2 years agogenirq/msi: Add abuse prevention comment to msi header
Thomas Gleixner [Mon, 6 Dec 2021 22:51:49 +0000 (23:51 +0100)]
genirq/msi: Add abuse prevention comment to msi header

Hope dies last.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.170847844@linutronix.de
2 years agogenirq/msi: Mop up old interfaces
Thomas Gleixner [Mon, 6 Dec 2021 22:51:47 +0000 (23:51 +0100)]
genirq/msi: Mop up old interfaces

Get rid of the old iterators, alloc/free functions and adjust the core code
accordingly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.117395027@linutronix.de
2 years agogenirq/msi: Convert to new functions
Thomas Gleixner [Mon, 6 Dec 2021 22:51:45 +0000 (23:51 +0100)]
genirq/msi: Convert to new functions

Use the new iterator functions and add locking where required.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.063705667@linutronix.de
2 years agogenirq/msi: Make interrupt allocation less convoluted
Thomas Gleixner [Mon, 6 Dec 2021 22:51:44 +0000 (23:51 +0100)]
genirq/msi: Make interrupt allocation less convoluted

There is no real reason to do several loops over the MSI descriptors
instead of just doing one loop. In case of an error everything is undone
anyway so it does not matter whether it's a partial or a full rollback.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210749.010234767@linutronix.de
2 years agoplatform-msi: Simplify platform device MSI code
Thomas Gleixner [Mon, 6 Dec 2021 22:51:42 +0000 (23:51 +0100)]
platform-msi: Simplify platform device MSI code

The allocation code is overly complex. It tries to have the MSI index space
packed, which is not working when an interrupt is freed. There is no
requirement for this. The only requirement is that the MSI index is unique.

Move the MSI descriptor allocation into msi_domain_populate_irqs() and use
the Linux interrupt number as MSI index which fulfils the unique
requirement.

This requires to lock the MSI descriptors which makes the lock order
reverse to the regular MSI alloc/free functions vs. the domain
mutex. Assign a seperate lockdep class for these MSI device domains.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.956731741@linutronix.de
2 years agoplatform-msi: Let core code handle MSI descriptors
Thomas Gleixner [Mon, 6 Dec 2021 22:51:41 +0000 (23:51 +0100)]
platform-msi: Let core code handle MSI descriptors

Use the core functionality for platform MSI interrupt domains. The platform
device MSI interrupt domains will be converted in a later step.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.903173257@linutronix.de
2 years agobus: fsl-mc-msi: Simplify MSI descriptor handling
Thomas Gleixner [Mon, 6 Dec 2021 22:51:39 +0000 (23:51 +0100)]
bus: fsl-mc-msi: Simplify MSI descriptor handling

Let the MSI irq domain code handle descriptor allocation and free.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.847219474@linutronix.de
2 years agosoc: ti: ti_sci_inta_msi: Remove ti_sci_inta_msi_domain_free_irqs()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:37 +0000 (23:51 +0100)]
soc: ti: ti_sci_inta_msi: Remove ti_sci_inta_msi_domain_free_irqs()

The function has no users and is pointless now that the core frees the MSI
descriptors, which means potential users can just use msi_domain_free_irqs().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.793119155@linutronix.de
2 years agosoc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation
Thomas Gleixner [Mon, 6 Dec 2021 22:51:36 +0000 (23:51 +0100)]
soc: ti: ti_sci_inta_msi: Rework MSI descriptor allocation

Protect the allocation properly and use the core allocation and free
mechanism.

No functional change intended.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.737904583@linutronix.de
2 years agoNTB/msi: Convert to msi_on_each_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:34 +0000 (23:51 +0100)]
NTB/msi: Convert to msi_on_each_desc()

Replace the about to vanish iterators, make use of the filtering and take
the descriptor lock around the iteration.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.683004012@linutronix.de
2 years agoPCI: hv: Rework MSI handling
Thomas Gleixner [Mon, 6 Dec 2021 22:51:33 +0000 (23:51 +0100)]
PCI: hv: Rework MSI handling

Replace the about to vanish iterators and make use of the filtering. Take
the descriptor lock around the iterators.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211206210748.629363944@linutronix.de
2 years agopowerpc/mpic_u3msi: Use msi_for_each-desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:31 +0000 (23:51 +0100)]
powerpc/mpic_u3msi: Use msi_for_each-desc()

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.576162169@linutronix.de
2 years agopowerpc/fsl_msi: Use msi_for_each_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:29 +0000 (23:51 +0100)]
powerpc/fsl_msi: Use msi_for_each_desc()

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.522641685@linutronix.de
2 years agopowerpc/pasemi/msi: Convert to msi_on_each_dec()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:28 +0000 (23:51 +0100)]
powerpc/pasemi/msi: Convert to msi_on_each_dec()

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.468512783@linutronix.de
2 years agopowerpc/cell/axon_msi: Convert to msi_on_each_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:26 +0000 (23:51 +0100)]
powerpc/cell/axon_msi: Convert to msi_on_each_desc()

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.414712173@linutronix.de
2 years agopowerpc/4xx/hsta: Rework MSI handling
Thomas Gleixner [Mon, 6 Dec 2021 22:51:25 +0000 (23:51 +0100)]
powerpc/4xx/hsta: Rework MSI handling

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.359766435@linutronix.de
2 years agos390/pci: Rework MSI descriptor walk
Thomas Gleixner [Mon, 6 Dec 2021 22:51:23 +0000 (23:51 +0100)]
s390/pci: Rework MSI descriptor walk

Replace the about to vanish iterators and make use of the filtering.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20211206210748.305656158@linutronix.de
2 years agoxen/pcifront: Rework MSI handling
Thomas Gleixner [Mon, 6 Dec 2021 22:51:21 +0000 (23:51 +0100)]
xen/pcifront: Rework MSI handling

Replace the about to vanish iterators.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.251752714@linutronix.de
2 years agox86/pci/xen: Use msi_for_each_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:20 +0000 (23:51 +0100)]
x86/pci/xen: Use msi_for_each_desc()

Replace the about to vanish iterators.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210748.198359105@linutronix.de
2 years agoPCI/MSI: Use msi_on_each_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:18 +0000 (23:51 +0100)]
PCI/MSI: Use msi_on_each_desc()

Use the new iterator functions which pave the way for dynamically extending
MSI-X vectors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211206210748.142603657@linutronix.de
2 years agoPCI/MSI: Let core code free MSI descriptors
Thomas Gleixner [Mon, 6 Dec 2021 22:51:16 +0000 (23:51 +0100)]
PCI/MSI: Let core code free MSI descriptors

Set the domain info flag which tells the core code to free the MSI
descriptors from msi_domain_free_irqs() and add an explicit call to the
core function into the legacy code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211206210748.089085131@linutronix.de
2 years agoPCI/MSI: Use msi_add_msi_desc()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:15 +0000 (23:51 +0100)]
PCI/MSI: Use msi_add_msi_desc()

Simplify the allocation of MSI descriptors by using msi_add_msi_desc()
which moves the storage handling to core code and prepares for dynamic
extension of the MSI-X vector space.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211206210748.035348646@linutronix.de
2 years agoPCI/MSI: Protect MSI operations
Thomas Gleixner [Mon, 6 Dec 2021 22:51:13 +0000 (23:51 +0100)]
PCI/MSI: Protect MSI operations

To prepare for dynamic extension of MSI-X vectors, protect the MSI
operations for MSI and MSI-X. This requires to move the invocation of
irq_create_affinity_masks() out of the descriptor lock section to avoid
reverse lock ordering vs. CPU hotplug lock as some callers of the PCI/MSI
allocation interfaces already hold it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211206210747.982292705@linutronix.de
2 years agogenirq/msi: Provide domain flags to allocate/free MSI descriptors automatically
Thomas Gleixner [Mon, 6 Dec 2021 22:51:12 +0000 (23:51 +0100)]
genirq/msi: Provide domain flags to allocate/free MSI descriptors automatically

Provide domain info flags which tell the core to allocate simple
descriptors or to free descriptors when the interrupts are freed and
implement the required functionality.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.928198636@linutronix.de
2 years agogenirq/msi: Provide msi_alloc_msi_desc() and a simple allocator
Thomas Gleixner [Mon, 6 Dec 2021 22:51:10 +0000 (23:51 +0100)]
genirq/msi: Provide msi_alloc_msi_desc() and a simple allocator

Provide msi_alloc_msi_desc() which takes a template MSI descriptor for
initializing a newly allocated descriptor. This allows to simplify various
usage sites of alloc_msi_entry() and moves the storage handling into the
core code.

For simple cases where only a linear vector space is required provide
msi_add_simple_msi_descs() which just allocates a linear range of MSI
descriptors and fills msi_desc::msi_index accordingly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.873833567@linutronix.de
2 years agogenirq/msi: Provide a set of advanced MSI accessors and iterators
Thomas Gleixner [Mon, 6 Dec 2021 22:51:08 +0000 (23:51 +0100)]
genirq/msi: Provide a set of advanced MSI accessors and iterators

In preparation for dynamic handling of MSI-X interrupts provide a new set
of MSI descriptor accessor functions and iterators. They are benefitial per
se as they allow to cleanup quite some code in various MSI domain
implementations.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.818635078@linutronix.de
2 years agogenirq/msi: Provide msi_domain_alloc/free_irqs_descs_locked()
Thomas Gleixner [Mon, 6 Dec 2021 22:51:07 +0000 (23:51 +0100)]
genirq/msi: Provide msi_domain_alloc/free_irqs_descs_locked()

Usage sites which do allocations of the MSI descriptors before invoking
msi_domain_alloc_irqs() require to lock the MSI decriptors accross the
operation.

Provide entry points which can be called with the MSI mutex held and lock
the mutex in the existing entry points.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.765371053@linutronix.de
2 years agogenirq/msi: Add mutex for MSI list protection
Thomas Gleixner [Mon, 6 Dec 2021 22:51:05 +0000 (23:51 +0100)]
genirq/msi: Add mutex for MSI list protection

For upcoming runtime extensions of MSI-X interrupts it's required to
protect the MSI descriptor list. Add a mutex to struct msi_device_data and
provide lock/unlock functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.708877269@linutronix.de
2 years agogenirq/msi: Move descriptor list to struct msi_device_data
Thomas Gleixner [Mon, 6 Dec 2021 22:51:04 +0000 (23:51 +0100)]
genirq/msi: Move descriptor list to struct msi_device_data

It's only required when MSI is in use.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211206210747.650487479@linutronix.de
2 years agodmaengine: qcom_hidma: Cleanup MSI handling
Thomas Gleixner [Fri, 10 Dec 2021 22:19:37 +0000 (23:19 +0100)]
dmaengine: qcom_hidma: Cleanup MSI handling

There is no reason to walk the MSI descriptors to retrieve the interrupt
number for a device. Use msi_get_virq() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Sinan Kaya <okaya@kernel.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20211210221815.329792721@linutronix.de
2 years agosoc: ti: ti_sci_inta_msi: Get rid of ti_sci_inta_msi_get_virq()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:35 +0000 (23:19 +0100)]
soc: ti: ti_sci_inta_msi: Get rid of ti_sci_inta_msi_get_virq()

Just use the core function msi_get_virq().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20211210221815.269468319@linutronix.de
2 years agobus: fsl-mc: fsl-mc-allocator: Rework MSI handling
Thomas Gleixner [Fri, 10 Dec 2021 22:19:34 +0000 (23:19 +0100)]
bus: fsl-mc: fsl-mc-allocator: Rework MSI handling

Storing a pointer to the MSI descriptor just to track the Linux interrupt
number is daft. Just store the interrupt number and be done with it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221815.207838579@linutronix.de
2 years agomailbox: bcm-flexrm-mailbox: Rework MSI interrupt handling
Thomas Gleixner [Fri, 10 Dec 2021 22:19:32 +0000 (23:19 +0100)]
mailbox: bcm-flexrm-mailbox: Rework MSI interrupt handling

No point in retrieving the MSI descriptors. Just query the Linux interrupt
number.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221815.148331680@linutronix.de
2 years agoiommu/arm-smmu-v3: Use msi_get_virq()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:31 +0000 (23:19 +0100)]
iommu/arm-smmu-v3: Use msi_get_virq()

Let the core code fiddle with the MSI descriptor retrieval.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221815.089008198@linutronix.de
2 years agoperf/smmuv3: Use msi_get_virq()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:29 +0000 (23:19 +0100)]
perf/smmuv3: Use msi_get_virq()

Let the core code fiddle with the MSI descriptor retrieval.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221815.029143589@linutronix.de
2 years agodmaengine: mv_xor_v2: Get rid of msi_desc abuse
Thomas Gleixner [Fri, 10 Dec 2021 22:19:28 +0000 (23:19 +0100)]
dmaengine: mv_xor_v2: Get rid of msi_desc abuse

Storing a pointer to the MSI descriptor just to keep track of the Linux
interrupt number is daft. Use msi_get_virq() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20211210221814.970099984@linutronix.de
2 years agoPCI/MSI: Simplify pci_irq_get_affinity()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:26 +0000 (23:19 +0100)]
PCI/MSI: Simplify pci_irq_get_affinity()

Replace open coded MSI descriptor chasing and use the proper accessor
functions instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.900929381@linutronix.de
2 years agoPCI/MSI: Use msi_get_virq() in pci_get_vector()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:25 +0000 (23:19 +0100)]
PCI/MSI: Use msi_get_virq() in pci_get_vector()

Use msi_get_vector() and handle the return value to be compatible.

No functional change intended.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.841243231@linutronix.de
2 years agogenirq/msi: Provide interface to retrieve Linux interrupt number
Thomas Gleixner [Fri, 10 Dec 2021 22:19:23 +0000 (23:19 +0100)]
genirq/msi: Provide interface to retrieve Linux interrupt number

This allows drivers to retrieve the Linux interrupt number instead of
fiddling with MSI descriptors.

msi_get_virq() returns the Linux interrupt number or 0 in case that there
is no entry for the given MSI index.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.780824745@linutronix.de
2 years agopowerpc/pseries/msi: Let core code check for contiguous entries
Thomas Gleixner [Fri, 10 Dec 2021 22:19:22 +0000 (23:19 +0100)]
powerpc/pseries/msi: Let core code check for contiguous entries

Set the domain info flag and remove the check.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.720998720@linutronix.de
2 years agoPCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUS
Thomas Gleixner [Fri, 10 Dec 2021 22:19:20 +0000 (23:19 +0100)]
PCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUS

Provide a domain info flag which makes the core code check for a contiguous
MSI-X index on allocation. That's simpler than checking it at some other
domain callback in architecture code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211210221814.662401116@linutronix.de
2 years agoPCI/MSI: Use msi_desc::msi_index
Thomas Gleixner [Fri, 10 Dec 2021 22:19:18 +0000 (23:19 +0100)]
PCI/MSI: Use msi_desc::msi_index

The usage of msi_desc::pci::entry_nr is confusing at best. It's the index
into the MSI[X] descriptor table.

Use msi_desc::msi_index which is shared between all MSI incarnations
instead of having a PCI specific storage for no value.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211210221814.602911509@linutronix.de
2 years agosoc: ti: ti_sci_inta_msi: Use msi_desc::msi_index
Thomas Gleixner [Fri, 10 Dec 2021 22:19:17 +0000 (23:19 +0100)]
soc: ti: ti_sci_inta_msi: Use msi_desc::msi_index

Use the common msi_index member and get rid of the pointless wrapper struct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20211210221814.540704224@linutronix.de
2 years agobus: fsl-mc-msi: Use msi_desc::msi_index
Thomas Gleixner [Fri, 10 Dec 2021 22:19:15 +0000 (23:19 +0100)]
bus: fsl-mc-msi: Use msi_desc::msi_index

Use the common msi_index member and get rid of the pointless wrapper struct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.477386185@linutronix.de
2 years agoplatform-msi: Use msi_desc::msi_index
Thomas Gleixner [Fri, 10 Dec 2021 22:19:14 +0000 (23:19 +0100)]
platform-msi: Use msi_desc::msi_index

Use the common msi_index member and get rid of the pointless wrapper struct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.413638645@linutronix.de
2 years agogenirq/msi: Consolidate MSI descriptor data
Thomas Gleixner [Fri, 10 Dec 2021 22:19:12 +0000 (23:19 +0100)]
genirq/msi: Consolidate MSI descriptor data

All non PCI/MSI usage variants have data structures in struct msi_desc with
only one member: xxx_index. PCI/MSI has a entry_nr member.

Add a common msi_index member to struct msi_desc so all implementations can
share it which allows further consolidation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.350967317@linutronix.de
2 years agoplatform-msi: Store platform private data pointer in msi_device_data
Thomas Gleixner [Fri, 10 Dec 2021 22:19:11 +0000 (23:19 +0100)]
platform-msi: Store platform private data pointer in msi_device_data

Storing the platform private data in a MSI descriptor is sloppy at
best. The data belongs to the device and not to the descriptor.
Add a pointer to struct msi_device_data and store the pointer there.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.287680528@linutronix.de
2 years agoplatform-msi: Rename functions and clarify comments
Thomas Gleixner [Fri, 10 Dec 2021 22:19:09 +0000 (23:19 +0100)]
platform-msi: Rename functions and clarify comments

It's hard to distinguish what platform_msi_domain_alloc() and
platform_msi_domain_alloc_irqs() are about. Make the distinction more
explicit and add comments which explain the use cases properly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.228706214@linutronix.de
2 years agogenirq/msi: Remove the original sysfs interfaces
Thomas Gleixner [Fri, 10 Dec 2021 22:19:08 +0000 (23:19 +0100)]
genirq/msi: Remove the original sysfs interfaces

No more users. Refactor the core code accordingly and move the global
interface under CONFIG_PCI_MSI_ARCH_FALLBACKS.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.168362229@linutronix.de
2 years agoplatform-msi: Let the core code handle sysfs groups
Thomas Gleixner [Fri, 10 Dec 2021 22:19:06 +0000 (23:19 +0100)]
platform-msi: Let the core code handle sysfs groups

Set the domain info flag and remove the local sysfs code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.109408832@linutronix.de
2 years agoPCI/MSI: Let the irq code handle sysfs groups
Thomas Gleixner [Fri, 10 Dec 2021 22:19:05 +0000 (23:19 +0100)]
PCI/MSI: Let the irq code handle sysfs groups

Set the domain info flag which makes the core code handle sysfs groups and
put an explicit invocation into the legacy code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211210221814.048612053@linutronix.de
2 years agogenirq/msi: Provide msi_device_populate/destroy_sysfs()
Thomas Gleixner [Fri, 10 Dec 2021 22:19:03 +0000 (23:19 +0100)]
genirq/msi: Provide msi_device_populate/destroy_sysfs()

Add new allocation functions which can be activated by domain info
flags. They store the groups pointer in struct msi_device_data.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.988659194@linutronix.de
2 years agosoc: ti: ti_sci_inta_msi: Allocate MSI device data on first use
Thomas Gleixner [Fri, 10 Dec 2021 22:19:01 +0000 (23:19 +0100)]
soc: ti: ti_sci_inta_msi: Allocate MSI device data on first use

Allocate the MSI device data on first invocation of the allocation function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20211210221813.928842960@linutronix.de
2 years agobus: fsl-mc-msi: Allocate MSI device data on first use
Thomas Gleixner [Fri, 10 Dec 2021 22:19:00 +0000 (23:19 +0100)]
bus: fsl-mc-msi: Allocate MSI device data on first use

Allocate the MSI device data on first invocation of the allocation function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.867985931@linutronix.de
2 years agoplatform-msi: Allocate MSI device data on first use
Thomas Gleixner [Fri, 10 Dec 2021 22:18:58 +0000 (23:18 +0100)]
platform-msi: Allocate MSI device data on first use

Allocate the MSI device data on first invocation of the allocation function
for platform MSI private data.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.805529729@linutronix.de
2 years agoPCI/MSI: Allocate MSI device data on first use
Thomas Gleixner [Wed, 15 Dec 2021 17:19:49 +0000 (18:19 +0100)]
PCI/MSI: Allocate MSI device data on first use

Allocate MSI device data on first use, i.e. when a PCI driver invokes one
of the PCI/MSI enablement functions.

Add a wrapper function to ensure that the ordering vs. pcim_msi_release()
is correct.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/87r1adrdje.ffs@tglx
2 years agoPCI/MSI: Decouple MSI[-X] disable from pcim_release()
Thomas Gleixner [Wed, 15 Dec 2021 17:16:44 +0000 (18:16 +0100)]
PCI/MSI: Decouple MSI[-X] disable from pcim_release()

The MSI core will introduce runtime allocation of MSI related data. This
data will be devres managed and has to be set up before enabling
PCI/MSI[-X]. This would introduce an ordering issue vs. pcim_release().

The setup order is:

   pcim_enable_device()
devres_alloc(pcim_release...);
...
pci_irq_alloc()
  msi_setup_device_data()
     devres_alloc(msi_device_data_release, ...)

and once the device is released these release functions are invoked in the
opposite order:

    msi_device_data_release()
    ...
    pcim_release()
       pci_disable_msi[x]()

which is obviously wrong, because pci_disable_msi[x]() requires the MSI
data to be available to tear down the MSI[-X] interrupts.

Remove the MSI[-X] teardown from pcim_release() and add an explicit action
to be installed on the attempt of enabling PCI/MSI[-X].

This allows the MSI core data allocation to be ordered correctly in a
subsequent step.

Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/87tuf9rdoj.ffs@tglx
2 years agodevice: Add device:: Msi_data pointer and struct msi_device_data
Thomas Gleixner [Fri, 10 Dec 2021 22:18:55 +0000 (23:18 +0100)]
device: Add device:: Msi_data pointer and struct msi_device_data

Create struct msi_device_data and add a pointer of that type to struct
dev_msi_info, which is part of struct device. Provide an allocator function
which can be invoked from the MSI interrupt allocation code pathes.

Add a properties field to the data structure as a first member so the
allocation size is not zero bytes. The field will be uses later on.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.676660809@linutronix.de
2 years agodevice: Move MSI related data into a struct
Thomas Gleixner [Fri, 10 Dec 2021 22:18:54 +0000 (23:18 +0100)]
device: Move MSI related data into a struct

The only unconditional part of MSI data in struct device is the irqdomain
pointer. Everything else can be allocated on demand. Create a data
structure and move the irqdomain pointer into it. The other MSI specific
parts are going to be removed from struct device in later steps.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211210221813.617178827@linutronix.de
2 years agopowerpc/pseries/msi: Use PCI device properties
Thomas Gleixner [Fri, 10 Dec 2021 22:18:52 +0000 (23:18 +0100)]
powerpc/pseries/msi: Use PCI device properties

instead of fiddling with MSI descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.556202506@linutronix.de
2 years agopowerpc/cell/axon_msi: Use PCI device property
Thomas Gleixner [Fri, 10 Dec 2021 22:18:51 +0000 (23:18 +0100)]
powerpc/cell/axon_msi: Use PCI device property

instead of fiddling with MSI descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211210221813.493922179@linutronix.de
2 years agogenirq/msi: Use PCI device property
Thomas Gleixner [Fri, 10 Dec 2021 22:18:49 +0000 (23:18 +0100)]
genirq/msi: Use PCI device property

to determine whether this is MSI or MSIX instead of consulting MSI
descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.434156196@linutronix.de
2 years agox86/apic/msi: Use PCI device MSI property
Thomas Gleixner [Fri, 10 Dec 2021 22:18:47 +0000 (23:18 +0100)]
x86/apic/msi: Use PCI device MSI property

instead of fiddling with MSI descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.372357371@linutronix.de
2 years agox86/pci/XEN: Use PCI device property
Thomas Gleixner [Fri, 10 Dec 2021 22:18:46 +0000 (23:18 +0100)]
x86/pci/XEN: Use PCI device property

instead of fiddling with MSI descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.311410967@linutronix.de
2 years agoPCI/MSI: Set pci_dev::msi[x]_enabled early
Thomas Gleixner [Fri, 10 Dec 2021 22:18:44 +0000 (23:18 +0100)]
PCI/MSI: Set pci_dev::msi[x]_enabled early

There are quite some places which retrieve the first MSI descriptor to
evaluate whether the setup is for MSI or MSI-X. That's required because
pci_dev::msi[x]_enabled is only set when the setup completed successfully.

There is no real reason why msi[x]_enabled can't be set at the beginning of
the setup sequence and cleared in case of a failure.

Implement that so the MSI descriptor evaluations can be converted to simple
property queries.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.250049810@linutronix.de
2 years agox86/xen: Use correct #ifdef guard for xen_initdom_restore_msi()
Arnd Bergmann [Wed, 15 Dec 2021 14:01:59 +0000 (15:01 +0100)]
x86/xen: Use correct #ifdef guard for xen_initdom_restore_msi()

The #ifdef check around the definition doesn't match the one around the
declaration, leading to a link failure when CONFIG_XEN_DOM0 is enabled
but CONFIG_XEN_PV_DOM0 is not:

x86_64-linux-ld: arch/x86/kernel/apic/msi.o: in function `arch_restore_msi_irqs':
msi.c:(.text+0x29a): undefined reference to `xen_initdom_restore_msi'

Change the declaration to use the same check that was already present
around the function definition.

Fixes: ae72f3156729 ("PCI/MSI: Make arch_restore_msi_irqs() less horrible.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20211215140209.451379-1-arnd@kernel.org
2 years agoMerge branch 'irq/urgent' into irq/msi
Thomas Gleixner [Tue, 14 Dec 2021 12:30:34 +0000 (13:30 +0100)]
Merge branch 'irq/urgent' into irq/msi

to pick up the PCI/MSI-x fixes.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2 years agoPCI/MSI: Clear PCI_MSIX_FLAGS_MASKALL on error
Thomas Gleixner [Tue, 14 Dec 2021 11:42:14 +0000 (12:42 +0100)]
PCI/MSI: Clear PCI_MSIX_FLAGS_MASKALL on error

PCI_MSIX_FLAGS_MASKALL is set in the MSI-X control register at MSI-X
interrupt setup time. It's cleared on success, but the error handling path
only clears the PCI_MSIX_FLAGS_ENABLE bit.

That's incorrect as the reset state of the PCI_MSIX_FLAGS_MASKALL bit is
zero. That can be observed via lspci:

        Capabilities: [b0] MSI-X: Enable- Count=67 Masked+

Clear the bit in the error path to restore the reset state.

Fixes: 438553958ba1 ("PCI/MSI: Enable and mask MSI-X early")
Reported-by: Stefan Roese <sr@denx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Stefan Roese <sr@denx.de>
Cc: linux-pci@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Marek Vasut <marex@denx.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/87tufevoqx.ffs@tglx
2 years agoPCI/MSI: Mask MSI-X vectors only on success
Stefan Roese [Tue, 14 Dec 2021 11:49:32 +0000 (12:49 +0100)]
PCI/MSI: Mask MSI-X vectors only on success

Masking all unused MSI-X entries is done to ensure that a crash kernel
starts from a clean slate, which correponds to the reset state of the
device as defined in the PCI-E specificion 3.0 and later:

 Vector Control for MSI-X Table Entries
 --------------------------------------

 "00: Mask bit:  When this bit is set, the function is prohibited from
                 sending a message using this MSI-X Table entry.
                 ...
                 This bit’s state after reset is 1 (entry is masked)."

A Marvell NVME device fails to deliver MSI interrupts after trying to
enable MSI-X interrupts due to that masking. It seems to take the MSI-X
mask bits into account even when MSI-X is disabled.

While not specification compliant, this can be cured by moving the masking
into the success path, so that the MSI-X table entries stay in device reset
state when the MSI-X setup fails.

[ tglx: Move it into the success path, add comment and amend changelog ]

Fixes: aa8092c1d1f1 ("PCI/MSI: Mask all unused MSI-X entries")
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-pci@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Marek Vasut <marex@denx.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211210161025.3287927-1-sr@denx.de
2 years agoLinux 5.16-rc5
Linus Torvalds [Sun, 12 Dec 2021 22:53:01 +0000 (14:53 -0800)]
Linux 5.16-rc5

2 years agoMerge tag 'usb-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 12 Dec 2021 18:20:57 +0000 (10:20 -0800)]
Merge tag 'usb-5.16-rc5' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 5.16-rc5.  They include:

   - gadget driver fixes for reported issues

   - xhci fixes for reported problems.

   - config endpoint parsing fixes for where we got bitfields wrong

  Most of these have been in linux-next, the remaining few were not, but
  got lots of local testing in my systems and in some cloud testing
  infrastructures"

* tag 'usb-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: core: config: using bit mask instead of individual bits
  usb: core: config: fix validation of wMaxPacketValue entries
  USB: gadget: zero allocate endpoint 0 buffers
  USB: gadget: detect too-big endpoint 0 requests
  xhci: avoid race between disable slot command and host runtime suspend
  xhci: Remove CONFIG_USB_DEFAULT_PERSIST to prevent xHCI from runtime suspending
  Revert "usb: dwc3: dwc3-qcom: Enable tx-fifo-resize property by default"

2 years agoMerge tag 'char-misc-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 12 Dec 2021 18:16:34 +0000 (10:16 -0800)]
Merge tag 'char-misc-5.16-rc5' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are a bunch of small char/misc and other driver subsystem fixes.

  Included in here are:

   - iio driver fixes for reported problems

   - phy driver fixes for a number of reported problems

   - mhi resume bugfix for broken hardware

   - nvmem driver fix

   - rtsx driver fix for irq issues

   - fastrpc packet parsing fix

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (33 commits)
  bus: mhi: core: Add support for forced PM resume
  iio: trigger: stm32-timer: fix MODULE_ALIAS
  misc: rtsx: Avoid mangling IRQ during runtime PM
  nvmem: eeprom: at25: fix FRAM byte_len
  misc: fastrpc: fix improper packet size calculation
  MAINTAINERS: add maintainer for Qualcomm FastRPC driver
  bus: mhi: pci_generic: Fix device recovery failed issue
  iio: adc: stm32: fix null pointer on defer_probe error
  phy: HiSilicon: Fix copy and paste bug in error handling
  dt-bindings: phy: zynqmp-psgtr: fix USB phy name
  phy: ti: omap-usb2: Fix the kernel-doc style
  phy: qualcomm: ipq806x-usb: Fix kernel-doc style
  iio: at91-sama5d2: Fix incorrect sign extension
  iio: adc: axp20x_adc: fix charging current reporting on AXP22x
  iio: gyro: adxrs290: fix data signedness
  phy: ti: tusb1210: Fix the kernel-doc warn
  phy: qualcomm: usb-hsic: Fix the kernel-doc warn
  phy: qualcomm: qmp: Add missing struct documentation
  phy: mvebu-cp110-utmi: Fix kernel-doc warns
  iio: ad7768-1: Call iio_trigger_notify_done() on error
  ...

2 years agoMerge tag 'timers-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 12 Dec 2021 18:07:50 +0000 (10:07 -0800)]
Merge tag 'timers-urgent-2021-12-12' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "Two fixes for clock chip drivers:

   - A regression fix for the Designware APB timer. A recent change to
     the error checking code transformed the error condition wrongly so
     it turned into a fail if good condition.

   - Fix a clang build fail of the ARM architected timer driver"

* tag 'timers-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/arm_arch_timer: Force inlining of erratum_set_next_event_generic()
  clocksource/drivers/dw_apb_timer_of: Fix probe failure

2 years agoMerge tag 'irq-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 12 Dec 2021 17:53:12 +0000 (09:53 -0800)]
Merge tag 'irq-urgent-2021-12-12' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of interrupt chip driver fixes:

   - Fix the multi vector MSI allocation on Armada 370XP

   - Do interrupt acknowledgement correctly in the aspeed-scu driver

   - Make the IPR register offset correct in the NVIC driver

   - Make redistribution table flushing correct by issueing a SYNC
     command to ensure that the invalidation command has been executed

   - Plug a device tree node reference leak in the bcm7210-l2 driver

   - Trivial fixes in the MIPS GIC and the Apple AIC drivers"

* tag 'irq-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/irq-bcm7120-l2: Add put_device() after of_find_device_by_node()
  irqchip/irq-gic-v3-its.c: Force synchronisation when issuing INVALL
  irqchip/apple-aic: Mark aic_init_smp() as __init
  irqchip: nvic: Fix offset for Interrupt Priority Offsets
  irqchip/mips-gic: Use bitfield helpers
  irqchip/aspeed-scu: Replace update_bits with write_bits.
  irqchip/armada-370-xp: Fix support for Multi-MSI interrupts
  irqchip/armada-370-xp: Fix return value of armada_370_xp_msi_alloc()

2 years agoMerge tag 'sched-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 12 Dec 2021 17:38:04 +0000 (09:38 -0800)]
Merge tag 'sched-urgent-2021-12-12' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "A single fix for the x86 scheduler topology:

  Using cluster topology on hybrid CPUs, e.g. Alder Lake, biases the
  scheduler towards the ATOM cluster as that has more total capacity.
  Use selection based on CPU priority instead"

* tag 'sched-urgent-2021-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched,x86: Don't use cluster topology for x86 hybrid CPUs

2 years agoMerge tag 'csky-for-linus-5.16-rc5' of git://github.com/c-sky/csky-linux
Linus Torvalds [Sun, 12 Dec 2021 17:32:49 +0000 (09:32 -0800)]
Merge tag 'csky-for-linus-5.16-rc5' of git://github.com/c-sky/csky-linux

Pull csky from Guo Ren:
 "Only one fix for csky: fix fpu config macro"

* tag 'csky-for-linus-5.16-rc5' of git://github.com/c-sky/csky-linux:
  csky: fix typo of fpu config macro

2 years agousb: core: config: using bit mask instead of individual bits
Pavel Hofman [Fri, 10 Dec 2021 08:52:19 +0000 (09:52 +0100)]
usb: core: config: using bit mask instead of individual bits

Using standard USB_EP_MAXP_MULT_MASK instead of individual bits for
extracting multiple-transactions bits from wMaxPacketSize value.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20211210085219.16796-2-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agousb: core: config: fix validation of wMaxPacketValue entries
Pavel Hofman [Fri, 10 Dec 2021 08:52:18 +0000 (09:52 +0100)]
usb: core: config: fix validation of wMaxPacketValue entries

The checks performed by commit aed9d65ac327 ("USB: validate
wMaxPacketValue entries in endpoint descriptors") require that initial
value of the maxp variable contains both maximum packet size bits
(10..0) and multiple-transactions bits (12..11). However, the existing
code assings only the maximum packet size bits. This patch assigns all
bits of wMaxPacketSize to the variable.

Fixes: aed9d65ac327 ("USB: validate wMaxPacketValue entries in endpoint descriptors")
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20211210085219.16796-1-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoUSB: gadget: zero allocate endpoint 0 buffers
Greg Kroah-Hartman [Thu, 9 Dec 2021 18:02:15 +0000 (19:02 +0100)]
USB: gadget: zero allocate endpoint 0 buffers

Under some conditions, USB gadget devices can show allocated buffer
contents to a host.  Fix this up by zero-allocating them so that any
extra data will all just be zeros.

Reported-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Tested-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoUSB: gadget: detect too-big endpoint 0 requests
Greg Kroah-Hartman [Thu, 9 Dec 2021 17:59:27 +0000 (18:59 +0100)]
USB: gadget: detect too-big endpoint 0 requests

Sometimes USB hosts can ask for buffers that are too large from endpoint
0, which should not be allowed.  If this happens for OUT requests, stall
the endpoint, but for IN requests, trim the request size to the endpoint
buffer size.

Co-developed-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sun, 12 Dec 2021 00:28:27 +0000 (16:28 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four fixes, all in drivers.

  Three are small and obvious, the qedi one is a bit larger but also
  pretty obvious"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qla2xxx: Format log strings only if needed
  scsi: scsi_debug: Fix buffer size of REPORT ZONES command
  scsi: qedi: Fix cmd_cleanup_cmpl counter mismatch issue
  scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()

2 years agoMerge tag 'xfs-5.16-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sun, 12 Dec 2021 00:21:06 +0000 (16:21 -0800)]
Merge tag 'xfs-5.16-fixes-3' of git://git./fs/xfs/xfs-linux

Pull xfs fix from Darrick Wong:
 "This fixes a race between a readonly remount process and other
  processes that hold a file IOLOCK on files that previously experienced
  copy on write, that could result in severe filesystem corruption if
  the filesystem is then remounted rw.

  I think this is fairly rare (since the only reliable reproducer I have
  that fits the second criteria is the experimental xfs_scrub program),
  but the race is clear, so we still need to fix this.

  Summary:

   - Fix a data corruption vector that can result from the ro remount
     process failing to clear all speculative preallocations from files
     and the rw remount process not noticing the incomplete cleanup"

* tag 'xfs-5.16-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: remove all COW fork extents when remounting readonly

2 years agoMerge branch 'for-5.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis...
Linus Torvalds [Sun, 12 Dec 2021 00:14:17 +0000 (16:14 -0800)]
Merge branch 'for-5.16-fixes' of git://git./linux/kernel/git/dennis/percpu

Pull percpu fixes from Dennis Zhou:
 "This contains a fix for SMP && !MMU archs for percpu which has been
  tested by arm and sh. It seems in the past they have gotten away with
  it due to mapping of vm functions to km functions, but this fell apart
  a few releases ago and was just reported recently.

  The other is just a minor dependency clean up.

  I think queued up right now by Andrew is a fix in percpu that papers
  of what seems to be a bug in hotplug for a special situation with
  memoryless nodes. Michal Hocko is digging into it further"

* 'for-5.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  percpu_ref: Replace kernel.h with the necessary inclusions
  percpu: km: ensure it is used with NOMMU (either UP or SMP)

2 years agoMerge tag 'perf-tools-fixes-for-v5.16-2021-12-11' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 11 Dec 2021 21:28:02 +0000 (13:28 -0800)]
Merge tag 'perf-tools-fixes-for-v5.16-2021-12-11' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Prevent out-of-bounds access to per sample registers.

 - Fix NULL vs IS_ERR_OR_NULL() checking on the python binding.

 - Intel PT fixes, half of those are one-liners:
      - Fix some PGE (packet generation enable/control flow packets) usage.
      - Fix sync state when a PSB (synchronization) packet is found.
      - Fix intel_pt_fup_event() assumptions about setting state type.
      - Fix state setting when receiving overflow (OVF) packet.
      - Fix next 'err' value, walking trace.
      - Fix missing 'instruction' events with 'q' option.
      - Fix error timestamp setting on the decoder error path.

* tag 'perf-tools-fixes-for-v5.16-2021-12-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf python: Fix NULL vs IS_ERR_OR_NULL() checking
  perf intel-pt: Fix error timestamp setting on the decoder error path
  perf intel-pt: Fix missing 'instruction' events with 'q' option
  perf intel-pt: Fix next 'err' value, walking trace
  perf intel-pt: Fix state setting when receiving overflow (OVF) packet
  perf intel-pt: Fix intel_pt_fup_event() assumptions about setting state type
  perf intel-pt: Fix sync state when a PSB (synchronization) packet is found
  perf intel-pt: Fix some PGE (packet generation enable/control flow packets) usage
  perf tools: Prevent out-of-bounds access to registers

2 years agoMerge tag 'block-5.16-2021-12-10' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 11 Dec 2021 17:25:07 +0000 (09:25 -0800)]
Merge tag 'block-5.16-2021-12-10' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few block fixes that should go into this release:

   - NVMe pull request:
        - set ana_log_size to 0 after freeing ana_log_buf (Hou Tao)
        - show subsys nqn for duplicate cntlids (Keith Busch)
        - disable namespace access for unsupported metadata (Keith
          Busch)
        - report write pointer for a full zone as zone start + zone len
          (Niklas Cassel)
        - fix use after free when disconnecting a reconnecting ctrl
          (Ruozhu Li)
        - fix a list corruption in nvmet-tcp (Sagi Grimberg)

   - Fix for a regression on DIO single bio async IO (Pavel)

   - ioprio seteuid fix (Davidlohr)

   - mtd fix that subsequently got reverted as it was broken, will get
     re-done and submitted for the next round

   - Two MD fixes via Song (Markus, zhangyue)"

* tag 'block-5.16-2021-12-10' of git://git.kernel.dk/linux-block:
  Revert "mtd_blkdevs: don't scan partitions for plain mtdblock"
  block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)
  md: fix double free of mddev->private in autorun_array()
  md: fix update super 1.0 on rdev size change
  nvmet-tcp: fix possible list corruption for unexpected command failure
  block: fix single bio async DIO error handling
  nvme: fix use after free when disconnecting a reconnecting ctrl
  nvme-multipath: set ana_log_size to 0 after free ana_log_buf
  mtd_blkdevs: don't scan partitions for plain mtdblock
  nvme: report write pointer for a full zone as zone start + zone len
  nvme: disable namespace access for unsupported metadata
  nvme: show subsys nqn for duplicate cntlids

2 years agoMerge tag 'io_uring-5.16-2021-12-10' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 11 Dec 2021 17:19:44 +0000 (09:19 -0800)]
Merge tag 'io_uring-5.16-2021-12-10' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few fixes that are all bound for stable:

   - Two syzbot reports for io-wq that turned out to be separate fixes,
     but ultimately very closely related

   - io_uring task_work running on cancelations"

* tag 'io_uring-5.16-2021-12-10' of git://git.kernel.dk/linux-block:
  io-wq: check for wq exit after adding new worker task_work
  io_uring: ensure task_work gets run as part of cancelations
  io-wq: remove spurious bit clear on task_work addition

2 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 11 Dec 2021 17:09:59 +0000 (09:09 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Two more I2C driver bugfixes"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mpc: Use atomic read and fix break condition
  i2c: virtio: fix completion handling

2 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 11 Dec 2021 17:06:08 +0000 (09:06 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk driver fixes from Stephen Boyd:

 - Fix qcom mux logic to look at the proper parent table member. Luckily
   this clk type isn't very common.

 - Don't kill clks on qcom systems that use Trion PLLs that are enabled
   out of the bootloader. We will simply skip programming the PLL rate
   if it's already done.

 - Use the proper clk_ops for the qcom sm6125 ICE clks.

 - Use module_platform_driver() in i.MX as it can be a module.

 - Fix a UAF in the versatile clk driver on an error path.

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: versatile: clk-icst: use after free on error path
  clk: qcom: sm6125-gcc: Swap ops of ice and apps on sdcc1
  clk: imx: use module_platform_driver
  clk: qcom: clk-alpha-pll: Don't reconfigure running Trion
  clk: qcom: regmap-mux: fix parent clock lookup

2 years agoMerge tag 'devicetree-fixes-for-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 11 Dec 2021 16:58:04 +0000 (08:58 -0800)]
Merge tag 'devicetree-fixes-for-5.16-2' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Revert schema checks on %.dtb targets. This was problematic for some
   external build tools.

 - A few DT binding example fixes

 - Add back dropped 'enet-phy-lane-no-swap' Ethernet PHY property

 - Drop erroneous if/then schema in nxp,imx7-mipi-csi2

 - Add a quirk to fix some interrupt controllers use of 'interrupt-map'

* tag 'devicetree-fixes-for-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  Revert "kbuild: Enable DT schema checks for %.dtb targets"
  dt-bindings: bq25980: Fixup the example
  dt-bindings: input: gpio-keys: Fix interrupts in example
  dt-bindings: net: Reintroduce PHY no lane swap binding
  dt-bindings: media: nxp,imx7-mipi-csi2: Drop bad if/then schema
  of/irq: Add a quirk for controllers with their own definition of interrupt-map
  dt-bindings: iio: adc: exynos-adc: Fix node name in example

2 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 11 Dec 2021 16:46:52 +0000 (08:46 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "21 patches.

  Subsystems affected by this patch series: MAINTAINERS, mailmap, and mm
  (mlock, pagecache, damon, slub, memcg, hugetlb, and pagecache)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits)
  mm: bdi: initialize bdi_min_ratio when bdi is unregistered
  hugetlbfs: fix issue of preallocation of gigantic pages can't work
  mm/memcg: relocate mod_objcg_mlstate(), get_obj_stock() and put_obj_stock()
  mm/slub: fix endianness bug for alloc/free_traces attributes
  selftests/damon: split test cases
  selftests/damon: test debugfs file reads/writes with huge count
  selftests/damon: test wrong DAMOS condition ranges input
  selftests/damon: test DAMON enabling with empty target_ids case
  selftests/damon: skip test if DAMON is running
  mm/damon/vaddr-test: remove unnecessary variables
  mm/damon/vaddr-test: split a test function having >1024 bytes frame size
  mm/damon/vaddr: remove an unnecessary warning message
  mm/damon/core: remove unnecessary error messages
  mm/damon/dbgfs: remove an unnecessary error message
  mm/damon/core: use better timer mechanisms selection threshold
  mm/damon/core: fix fake load reports due to uninterruptible sleeps
  timers: implement usleep_idle_range()
  filemap: remove PageHWPoison check from next_uptodate_page()
  mailmap: update email address for Guo Ren
  MAINTAINERS: update kdump maintainers
  ...

2 years agoMerge tag 'timers-v5.16-rc4' of https://git.linaro.org/people/daniel.lezcano/linux...
Thomas Gleixner [Sat, 11 Dec 2021 12:56:30 +0000 (13:56 +0100)]
Merge tag 'timers-v5.16-rc4' of https://git.linaro.org/people/daniel.lezcano/linux into timers/urgent

Pull timer fixes from Daniel Lezcano:

  - Fix build error with clang and some kernel configuration on the
    arm64 architected timer by inlining the
    erratum_set_next_event_generic() function (Marc Zyngier)

  - Fix probe error on the dw_apb_timer_of driver by fixing the
    incorrect condition previously introduced (Alexey Sheplyakov)

Link: https://lore.kernel.org/r/429b796d-9395-4ca8-81f3-30911f80a9a9@linaro.org
2 years agoperf python: Fix NULL vs IS_ERR_OR_NULL() checking
Miaoqian Lin [Sat, 11 Dec 2021 05:38:53 +0000 (05:38 +0000)]
perf python: Fix NULL vs IS_ERR_OR_NULL() checking

The function trace_event__tp_format_id may return ERR_PTR(-ENOMEM).  Use
IS_ERR_OR_NULL to check tp_format.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Link: http://lore.kernel.org/lkml/20211211053856.19827-1-linmq006@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix error timestamp setting on the decoder error path
Adrian Hunter [Fri, 10 Dec 2021 16:23:03 +0000 (18:23 +0200)]
perf intel-pt: Fix error timestamp setting on the decoder error path

An error timestamp shows the last known timestamp for the queue, but this
is not updated on the error path. Fix by setting it.

Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix missing 'instruction' events with 'q' option
Adrian Hunter [Fri, 10 Dec 2021 16:23:02 +0000 (18:23 +0200)]
perf intel-pt: Fix missing 'instruction' events with 'q' option

FUP packets contain IP information, which makes them also an 'instruction'
event in 'hop' mode i.e. the itrace 'q' option.  That wasn't happening, so
restructure the logic so that FUP events are added along with appropriate
'instruction' and 'branch' events.

Fixes: 7c1b16ba0e26e6 ("perf intel-pt: Add support for decoding FUP/TIP only")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix next 'err' value, walking trace
Adrian Hunter [Fri, 10 Dec 2021 16:23:01 +0000 (18:23 +0200)]
perf intel-pt: Fix next 'err' value, walking trace

Code after label 'next:' in intel_pt_walk_trace() assumes 'err' is zero,
but it may not be, if arrived at via a 'goto'. Ensure it is zero.

Fixes: 7c1b16ba0e26e6 ("perf intel-pt: Add support for decoding FUP/TIP only")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-6-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix state setting when receiving overflow (OVF) packet
Adrian Hunter [Fri, 10 Dec 2021 16:23:00 +0000 (18:23 +0200)]
perf intel-pt: Fix state setting when receiving overflow (OVF) packet

An overflow (OVF packet) is treated as an error because it represents a
loss of trace data, but there is no loss of synchronization, so the packet
state should be INTEL_PT_STATE_IN_SYNC not INTEL_PT_STATE_ERR_RESYNC.

To support that, some additional variables must be reset, and the FUP
packet that may follow OVF is treated as an FUP event.

Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix intel_pt_fup_event() assumptions about setting state type
Adrian Hunter [Fri, 10 Dec 2021 16:22:59 +0000 (18:22 +0200)]
perf intel-pt: Fix intel_pt_fup_event() assumptions about setting state type

intel_pt_fup_event() assumes it can overwrite the state type if there has
been an FUP event, but this is an unnecessary and unexpected constraint on
callers.

Fix by touching only the state type flags that are affected by an FUP
event.

Fixes: a472e65fc490a ("perf intel-pt: Add decoder support for ptwrite and power event packets")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf intel-pt: Fix sync state when a PSB (synchronization) packet is found
Adrian Hunter [Fri, 10 Dec 2021 16:22:58 +0000 (18:22 +0200)]
perf intel-pt: Fix sync state when a PSB (synchronization) packet is found

When syncing, it may be that branch packet generation is not enabled at
that point, in which case there will not immediately be a control-flow
packet, so some packets before a control flow packet turns up, get
ignored.  However, the decoder is in sync as soon as a PSB is found, so
the state should be set accordingly.

Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v5.15+
Link: https://lore.kernel.org/r/20211210162303.2288710-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>