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The rmap walking functions do not modify the rmap_walk_control, and
page_idle_clear_pte_refs() takes advantage of that to move construction
of the rmap_walk_control to compile time. This lets us remove an
unclean cast.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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This ripples all the way through to every calling and called function
from rmap.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Move the prototype from mm.h to mm/internal.h and convert all callers
to pass a folio.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Add back page_lock_anon_vma_read() as a wrapper. This saves a few calls
to compound_head(). If any callers were passing a tail page before,
this would have failed to lock the anon VMA as page->mapping is not
valid for tail pages.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Convert the implementation and all callers.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Convert the callers to pass a folio and the try_to_migrate_one()
worker to use a folio throughout. Fixes an assumption that a
folio must be <= PMD size.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Change all three callers and the worker function try_to_unmap_one().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Convert split_huge_pmd_address() at the same time since it only passes
the folio through, and its two callers already have a folio on hand.
Removes numerous calls to compound_head() and removes an assumption
that a page cannot be larger than a PMD.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Both its callers pass a page which was previously on an LRU list,
so were passing a folio by definition. Use the type system to enforce
that and remove a few calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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page_mapped_in_vma() really just wants to walk one page, but as the
code stands, if passed the head page of a compound page, it will
walk every page in the compound page. Extract pfn/nr_pages/pgoff
from the struct page early, so they can be overridden by
page_mapped_in_vma().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Instead of declaring a struct page_vma_mapped_walk directly,
use these helpers to allow us to transition to a PFN approach in the
following patches.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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This is the folio equivalent of page_to_pgoff().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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This is a convenience function; split_huge_page_to_list() can take
any page in a folio (and does so on purpose because that page will
be the one which keeps the refcount). But it's convenient for the
callers to pass the folio instead of the first page in the folio.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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This implements the same algorithm as total_mapcount(), which is
transformed into a wrapper function.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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Adjust documentation to be more clear.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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These functions are page cache functionality and don't need to be
declared in fs.h.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
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__invalidate_mapping_pages()
We can save a function call by combining these two functions, which
are identical except for the return value. Also move the prototype
to mm/internal.h.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
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This function has one caller which already has a reference to the
page, so we don't need to use get_page_unless_zero(). Also move the
prototype to mm/internal.h.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
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Some of the callers already have the address_space and can avoid calling
folio_mapping() and checking if the folio was already truncated. Also
add kernel-doc and fix the return type (in case we ever support folios
larger than 4TB).
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
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Add kernel-doc and return the number of pages removed in order to
get the statistics right in __invalidate_mapping_pages().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Miaohe Lin <[email protected]>
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Since page->lru occupies the same bytes as compound_head, any page
on the LRU list must be a folio.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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This removes an assumption that THPs are the only kind of compound
pages and removes a couple of hidden calls to compound_head. It
also documents that you can't pass a tail page to mem_cgroup_swapout().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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This removes an assumption that THPs are the only kind of compound
pages and removes a few hidden calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
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folio_is_zone_device() is equivalent to is_zone_device_page(),
folio_is_device_private() is equivalent to is_device_private_page(),
and folio_is_pinnable() is equivalent to is_pinnable_page().
All of these tests return the same result for every page in the folio,
so we can just pass the head page of the folio to the page variant of
the function.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
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Convert the only caller to work on folios instead of pages.
This removes the last caller of put_compound_head(), so delete it.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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follow_hugetlb_page() only cares about success or failure, so it doesn't
need to know the type of the returned pointer, only whether it's NULL
or not.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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These wrappers have no more callers, so delete them.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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Replace three calls to compound_head() with one. This removes the last
user of compound_pincount(), so remove that helper too.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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This is the folio equivalent of compound_pincount_ptr().
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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Move compound_pincount from the third page to the second page, which
means it's available for all compound pages. That lets us delete
hpage_pincount_available().
On 32-bit systems, there isn't enough space for both compound_pincount
and compound_nr in the second page (it would collide with page->private,
which is in use for pages in the swap cache), so revert the optimisation
of storing both compound_order and compound_nr on 32-bit systems.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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This assumption needs the inverse of nth_page(), which is temporarily
named page_nth() until it's renamed later in this series.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: John Hubbard <[email protected]>
Reviewed-by: Jason Gunthorpe <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
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This reverts commit b1078c355d76769b5ddefc67d143fbd9b6e52c05.
The single user of of_alias_get_alias_list(),
drivers/tty/serial/xilinx_uartps.c, has since been refactored and no
longer needs this function. It also contained a Smatch checker warning:
drivers/of/base.c:2038 of_alias_get_alias_list()
warn: passing negative bit value 's32min-(-2),0-s32max' to 'set_bit()'
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v5.18
Quite a quiet release for ASoC, lots of work on drivers and platforms
but nothing too groundbreaking but not much on the core itself:
- Start of moving SoF to support multiple IPC mechanisms.
- Use of NHLT ACPI table to reduce the amount of quirking required for
Intel systems.
- Some building blocks for use in forthcoming Intel AVS driver for
legacy Intel DSP firmwares.
- Support for AMD PDM, Atmel PDMC, Awinic AW8738, i.MX cards with
TLV320AIC31xx, Intel machines with CS35L41 and ESSX8336, Mediatek
MT8181 wideband bluetooth, nVidia Tegra234, Qualcomm SC7280, Renesas
RZ/V2L, Texas Instruments TAS585M
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Introduce a new mount option -- trunkdiscovery,notrunkdiscovery -- to
toggle whether or not the client will engage in actively discovery
of trunking locations.
v2 make notrunkdiscovery default
Signed-off-by: Olga Kornievskaia <[email protected]>
Fixes: 1976b2b31462 ("NFSv4.1 query for fs_location attr on a new file system")
Signed-off-by: Trond Myklebust <[email protected]>
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We'll need an explicitly locked rate node API for netdevsim
to switch eswitch mode setting to locked.
Reviewed-by: Jiri Pirko <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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KVM_CAP_DISABLE_QUIRKS is irrevocably broken. The capability does not
advertise the set of quirks which may be disabled to userspace, so it is
impossible to predict the behavior of KVM. Worse yet,
KVM_CAP_DISABLE_QUIRKS will tolerate any value for cap->args[0], meaning
it fails to reject attempts to set invalid quirk bits.
The only valid workaround for the quirky quirks API is to add a new CAP.
Actually advertise the set of quirks that can be disabled to userspace
so it can predict KVM's behavior. Reject values for cap->args[0] that
contain invalid bits.
Finally, add documentation for the new capability and describe the
existing quirks.
Signed-off-by: Oliver Upton <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
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Add the <linux/cgroup-defs.h> dependency to <linux/psi.h>, because
cgroup_move_task() will dereference 'struct css_set'.
( Only older toolchains are affected, due to variations in
the implementation of rcu_assign_pointer() et al. )
Cc: Peter Zijlstra <[email protected]>
Cc: Linus Torvalds <[email protected]>
Reported-by: Sachin Sant <[email protected]>
Reported-by: Andrew Morton <[email protected]>
Reported-by: Borislav Petkov <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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Let's say that the caller has storage for num_elem stack frames. Then,
the BPF stack helper functions walk the stack for only num_elem frames.
This means that if skip > 0, one keeps only 'num_elem - skip' frames.
This is because it sets init_nr in the perf_callchain_entry to the end
of the buffer to save num_elem entries only. I believe it was because
the perf callchain code unwound the stack frames until it reached the
global max size (sysctl_perf_event_max_stack).
However it now has perf_callchain_entry_ctx.max_stack to limit the
iteration locally. This simplifies the code to handle init_nr in the
BPF callstack entries and removes the confusion with the perf_event's
__PERF_SAMPLE_CALLCHAIN_EARLY which sets init_nr to 0.
Also change the comment on bpf_get_stack() in the header file to be
more explicit what the return value means.
Fixes: c195651e565a ("bpf: add bpf_get_stack helper")
Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Link: https://lore.kernel.org/bpf/[email protected]
Based-on-patch-by: Eugene Loh <[email protected]>
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Currently, local storage memory can only be allocated atomically
(GFP_ATOMIC). This restriction is too strict for sleepable bpf
programs.
In this patch, the verifier detects whether the program is sleepable,
and passes the corresponding GFP_KERNEL or GFP_ATOMIC flag as a
5th argument to bpf_task/sk/inode_storage_get. This flag will propagate
down to the local storage functions that allocate memory.
Please note that bpf_task/sk/inode_storage_update_elem functions are
invoked by userspace applications through syscalls. Preemption is
disabled before bpf_task/sk/inode_storage_update_elem is called, which
means they will always have to allocate memory atomically.
Signed-off-by: Joanne Koong <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Acked-by: KP Singh <[email protected]>
Acked-by: Martin KaFai Lau <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
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The fib expression stores to a register, so we can't add empty stub.
Check that the register that is being written is in fact redundant.
In most cases, this is expected to cancel tracking as re-use is
unlikely.
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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its enough to export the meta get reduce helper and then call it
from nft_meta_bridge too.
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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Output of expressions might be larger than one single register, this might
clobber existing data. Reset tracking for all destination registers that
required to store the expression output.
This patch adds three new helper functions:
- nft_reg_track_update: cancel previous register tracking and update it.
- nft_reg_track_cancel: cancel any previous register tracking info.
- __nft_reg_track_cancel: cancel only one single register tracking info.
Partial register clobbering detection is also supported by checking the
.num_reg field which describes the number of register that are used.
This patch updates the following expressions:
- meta_bridge
- bitwise
- byteorder
- meta
- payload
to use these helper functions.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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Skip register tracking for expressions that perform read-only operations
on the registers. Define and use a cookie pointer NFT_REDUCE_READONLY to
avoid defining stubs for these expressions.
This patch re-enables register tracking which was disabled in ed5f85d42290
("netfilter: nf_tables: disable register tracking"). Follow up patches
add remaining register tracking for existing expressions.
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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The function sets the pernet boolean to avoid the spurious warning from
nf_ct_lookup_helper() when assigning conntrack helpers via nftables.
Fixes: 1a64edf54f55 ("netfilter: nft_ct: add helper set support")
Signed-off-by: Phil Sutter <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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I2C slave events tracepoints can be enabled by:
echo 1 > /sys/kernel/tracing/events/i2c_slave/enable
and logs in /sys/kernel/tracing/trace will look like:
... i2c_slave: i2c-0 a=010 ret=0 WR_REQ []
... i2c_slave: i2c-0 a=010 ret=0 WR_RCV [02]
... i2c_slave: i2c-0 a=010 ret=0 WR_RCV [0c]
... i2c_slave: i2c-0 a=010 ret=0 STOP []
... i2c_slave: i2c-0 a=010 ret=0 RD_REQ [04]
... i2c_slave: i2c-0 a=010 ret=0 RD_PRO [b4]
... i2c_slave: i2c-0 a=010 ret=0 STOP []
formatted as:
i2c-<adapter_nr>
a=<addr>
ret=<ret> <- callback return value
<event>
[<data>]
trace printings can be selected by adding a filter like:
echo adapter_nr==1 >/sys/kernel/tracing/events/i2c_slave/filter
Signed-off-by: Jae Hyun Yoo <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
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ipsec-next
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2022-03-19
1) Delete duplicated functions that calls same xfrm_api_check.
From Leon Romanovsky.
2) Align userland API of the default policy structure to the
internal structures. From Nicolas Dichtel.
====================
Signed-off-by: David S. Miller <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
- Add support for Asus TF103C
- Add support for Realtek RTL8852B
- Add support for Realtek RTL8723BE
- Add WBS support to mt7921s
* tag 'for-net-next-2022-03-18' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (24 commits)
Bluetooth: ath3k: remove superfluous header files
Bluetooth: bcm203x: remove superfluous header files
Bluetooth: hci_bcm: Add the Asus TF103C to the bcm_broken_irq_dmi_table
Bluetooth: mt7921s: Add WBS support
Bluetooth: mt7921s: Add .btmtk_get_codec_config_data
Bluetooth: mt7921s: Add .get_data_path_id
Bluetooth: mt7921s: Set HCI_QUIRK_VALID_LE_STATES
Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt
Bluetooth: btmtkuart: fix error handling in mtk_hci_wmt_sync()
Bluetooth: call hci_le_conn_failed with hdev lock in hci_le_conn_failed
Bluetooth: Send AdvMonitor Dev Found for all matched devices
Bluetooth: msft: Clear tracked devices on resume
Bluetooth: fix incorrect nonblock bitmask in bt_sock_wait_ready()
Bluetooth: Don't assign twice the same value
Bluetooth: btrtl: Add support for RTL8852B
Bluetooth: hci_uart: add missing NULL check in h5_enqueue
Bluetooth: Fix use after free in hci_send_acl
Bluetooth: btusb: Use quirk to skip HCI_FLT_CLEAR_ALL on fake CSR controllers
Bluetooth: hci_sync: Add a new quirk to skip HCI_FLT_CLEAR_ALL
Bluetooth: btmtkuart: fix the conflict between mtk and msft vendor event
...
====================
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Add an API for a fixed factor clk that uses an index for the parent
instead of a string name. This allows us to move drivers away from the
string based method of describing parents and use the DT/firmware based
method instead.
Signed-off-by: Marek Vasut <[email protected]>
Cc: Michael Turquette <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
[[email protected]: Expose a new API instead of internal function]
Signed-off-by: Stephen Boyd <[email protected]>
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SPI NOR core changes:
- move vendor specific code out of the core into vendor drivers.
- unify all function and object names in the vendor modules.
- make setup() callback optional to improve readability.
- skip erase logic when the SPI_NOR_NO_ERASE flag is set at flash
declaration.
Signed-off-by: Miquel Raynal <[email protected]>
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Network drivers can call to netif_get_num_default_rss_queues to get the
default number of receive queues to use. Right now, this default number
is min(8, num_online_cpus()).
Instead, as suggested by Jakub, use the number of physical cores divided
by 2 as a way to avoid wasting CPU resources and to avoid using both CPU
threads, but still allowing to scale for high-end processors with many
cores.
As an exception, select 2 queues for processors with 2 cores, because
otherwise it won't take any advantage of RSS despite being SMP capable.
Tested: Processor Intel Xeon E5-2620 (2 sockets, 6 cores/socket, 2
threads/core). NIC Broadcom NetXtreme II BCM57810 (10GBps). Ran some
tests with `perf stat iperf3 -R`, with parallelisms of 1, 8 and 24,
getting the following results:
- Number of queues: 6 (instead of 8)
- Network throughput: not affected
- CPU usage: utilized 0.05-0.12 CPUs more than before (having 24 CPUs
this is only 0.2-0.5% higher)
- Reduced the number of context switches by 7-50%, being more noticeable
when using a higher number of parallel threads.
Suggested-by: Jakub Kicinski <[email protected]>
Signed-off-by: Íñigo Huguet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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