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Author SHA1 Message Date
Arınç ÜNAL
6ebe414b48 net: dsa: mt7530: remove .mac_port_config for MT7988 and make it optional
For the switch on the MT7988 SoC, the mac_port_config member for ID_MT7988
in mt753x_table is not needed as the interfaces of all MACs are already
handled on mt7988_mac_port_get_caps().

Therefore, remove the mac_port_config member from ID_MT7988 in
mt753x_table. Before calling priv->info->mac_port_config(), if there's no
mac_port_config member in mt753x_table, exit mt753x_mac_config()
successfully.

Remove calling priv->info->mac_port_config() from the sanity check as the
sanity check requires a pointer to a mac_port_config function to be
non-NULL. This will fail for MT7988 as mac_port_config won't be a member of
its info table.

Co-developed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 12:23:42 +01:00
Will Deacon
f0dbc6d0de perf: starfive: Only allow COMPILE_TEST for 64-bit architectures
The kbuild robot exploded while wasting its time building the Starfive
PMU driver for the 32-bit PA-RISC and Hexagon architectures.

Adjust the Kconfig dependencies so that COMPILE_TEST is only applicable
for 64-bit architectures (which implement writeq()).

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Will Deacon <will@kernel.org>
2024-03-05 10:56:49 +00:00
Maciej Strozek
78334c343b mfd: cs42l43: Fix wrong GPIO_FN_SEL and SPI_CLK_CONFIG1 defaults
Two regs have wrong values in existing fields, change them to match
the datasheet.

Fixes: ace6d14481 ("mfd: cs42l43: Add support for cs42l43 core driver")

Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240301101547.2136948-1-mstrozek@opensource.cirrus.com
Signed-off-by: Lee Jones <lee@kernel.org>
2024-03-05 10:40:30 +00:00
Paolo Abeni
6702d60d3c Merge branch 'remove-page-frag-implementation-in-vhost_net'
Yunsheng Lin says:

====================
remove page frag implementation in vhost_net

Currently there are three implementations for page frag:

1. mm/page_alloc.c: net stack seems to be using it in the
   rx part with 'struct page_frag_cache' and the main API
   being page_frag_alloc_align().
2. net/core/sock.c: net stack seems to be using it in the
   tx part with 'struct page_frag' and the main API being
   skb_page_frag_refill().
3. drivers/vhost/net.c: vhost seems to be using it to build
   xdp frame, and it's implementation seems to be a mix of
   the above two.

This patchset tries to unfiy the page frag implementation a
little bit by unifying gfp bit for order 3 page allocation
and replacing page frag implementation in vhost.c with the
one in page_alloc.c.

After this patchset, we are not only able to unify the page
frag implementation a little, but also able to have about
0.5% performance boost testing by using the vhost_net_test
introduced in the last patch.

Before this patchset:
Performance counter stats for './vhost_net_test' (10 runs):

     305325.78 msec task-clock                       #    1.738 CPUs utilized               ( +-  0.12% )
       1048668      context-switches                 #    3.435 K/sec                       ( +-  0.00% )
            11      cpu-migrations                   #    0.036 /sec                        ( +- 17.64% )
            33      page-faults                      #    0.108 /sec                        ( +-  0.49% )
  244651819491      cycles                           #    0.801 GHz                         ( +-  0.43% )  (64)
   64714638024      stalled-cycles-frontend          #   26.45% frontend cycles idle        ( +-  2.19% )  (67)
   30774313491      stalled-cycles-backend           #   12.58% backend cycles idle         ( +-  7.68% )  (70)
  201749748680      instructions                     #    0.82  insn per cycle
                                              #    0.32  stalled cycles per insn     ( +-  0.41% )  (66.76%)
   65494787909      branches                         #  214.508 M/sec                       ( +-  0.35% )  (64)
    4284111313      branch-misses                    #    6.54% of all branches             ( +-  0.45% )  (66)

       175.699 +- 0.189 seconds time elapsed  ( +-  0.11% )

After this patchset:
Performance counter stats for './vhost_net_test' (10 runs):

     303974.38 msec task-clock                       #    1.739 CPUs utilized               ( +-  0.14% )
       1048807      context-switches                 #    3.450 K/sec                       ( +-  0.00% )
            14      cpu-migrations                   #    0.046 /sec                        ( +- 12.86% )
            33      page-faults                      #    0.109 /sec                        ( +-  0.46% )
  251289376347      cycles                           #    0.827 GHz                         ( +-  0.32% )  (60)
   67885175415      stalled-cycles-frontend          #   27.01% frontend cycles idle        ( +-  0.48% )  (63)
   27809282600      stalled-cycles-backend           #   11.07% backend cycles idle         ( +-  0.36% )  (71)
  195543234672      instructions                     #    0.78  insn per cycle
                                              #    0.35  stalled cycles per insn     ( +-  0.29% )  (69.04%)
   62423183552      branches                         #  205.357 M/sec                       ( +-  0.48% )  (67)
    4135666632      branch-misses                    #    6.63% of all branches             ( +-  0.63% )  (67)

       174.764 +- 0.214 seconds time elapsed  ( +-  0.12% )

Changelog:
V6: Add timeout for poll() and simplify some logic as suggested
    by Jason.

V5: Address the comment from jason in vhost_net_test.c and the
    comment about leaving out the gfp change for page frag in
    sock.c as suggested by Paolo.

V4: Resend based on latest net-next branch.

V3:
1. Add __page_frag_alloc_align() which is passed with the align mask
   the original function expected as suggested by Alexander.
2. Drop patch 3 in v2 suggested by Alexander.
3. Reorder patch 4 & 5 in v2 suggested by Alexander.

Note that placing this gfp flags handing for order 3 page in an inline
function is not considered, as we may be able to unify the page_frag
and page_frag_cache handling.

V2: Change 'xor'd' to 'masked off', add vhost tx testing for
    vhost_net_test.

V1: Fix some typo, drop RFC tag and rebase on latest net-next.
====================

Link: https://lore.kernel.org/r/20240228093013.8263-1-linyunsheng@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:17 +01:00
Yunsheng Lin
c5d3705cfd tools: virtio: introduce vhost_net_test
introduce vhost_net_test for both vhost_net tx and rx basing
on virtio_test to test vhost_net changing in the kernel.

Steps for vhost_net tx testing:
1. Prepare a out buf.
2. Kick the vhost_net to do tx processing.
3. Do the receiving in the tun side.
4. verify the data received by tun is correct.

Steps for vhost_net rx testing:
1. Prepare a in buf.
2. Do the sending in the tun side.
3. Kick the vhost_net to do rx processing.
4. verify the data received by vhost_net is correct.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:14 +01:00
Yunsheng Lin
4051bd8129 vhost/net: remove vhost_net_page_frag_refill()
The page frag in vhost_net_page_frag_refill() uses the
'struct page_frag' from skb_page_frag_refill(), but it's
implementation is similar to page_frag_alloc_align() now.

This patch removes vhost_net_page_frag_refill() by using
'struct page_frag_cache' instead of 'struct page_frag',
and allocating frag using page_frag_alloc_align().

The added benefit is that not only unifying the page frag
implementation a little, but also having about 0.5% performance
boost testing by using the vhost_net_test introduced in the
last patch.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:14 +01:00
Yunsheng Lin
a0727489ac net: introduce page_frag_cache_drain()
When draining a page_frag_cache, most user are doing
the similar steps, so introduce an API to avoid code
duplication.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:14 +01:00
Yunsheng Lin
4bc0d63a23 page_frag: unify gfp bits for order 3 page allocation
Currently there seems to be three page frag implementations
which all try to allocate order 3 page, if that fails, it
then fail back to allocate order 0 page, and each of them
all allow order 3 page allocation to fail under certain
condition by using specific gfp bits.

The gfp bits for order 3 page allocation are different
between different implementation, __GFP_NOMEMALLOC is
or'd to forbid access to emergency reserves memory for
__page_frag_cache_refill(), but it is not or'd in other
implementions, __GFP_DIRECT_RECLAIM is masked off to avoid
direct reclaim in vhost_net_page_frag_refill(), but it is
not masked off in __page_frag_cache_refill().

This patch unifies the gfp bits used between different
implementions by or'ing __GFP_NOMEMALLOC and masking off
__GFP_DIRECT_RECLAIM for order 3 page allocation to avoid
possible pressure for mm.

Leave the gfp unifying for page frag implementation in sock.c
for now as suggested by Paolo Abeni.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
CC: Alexander Duyck <alexander.duyck@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:14 +01:00
Yunsheng Lin
411c5f3680 mm/page_alloc: modify page_frag_alloc_align() to accept align as an argument
napi_alloc_frag_align() and netdev_alloc_frag_align() accept
align as an argument, and they are thin wrappers around the
__napi_alloc_frag_align() and __netdev_alloc_frag_align() APIs
doing the alignment checking and align mask conversion, in order
to call page_frag_alloc_align() directly. The intention here is
to keep the alignment checking and the alignmask conversion in
in-line wrapper to avoid those kind of operations during execution
time since it can usually be handled during compile time.

We are going to use page_frag_alloc_align() in vhost_net.c, it
need the same kind of alignment checking and alignmask conversion,
so split up page_frag_alloc_align into an inline wrapper doing the
above operation, and add __page_frag_alloc_align() which is passed
with the align mask the original function expected as suggested by
Alexander.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
CC: Alexander Duyck <alexander.duyck@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:38:14 +01:00
Jiawen Wu
0e71862a20 net: txgbe: fix to clear interrupt status after handling IRQ
GPIO EOI is not set to clear interrupt status after handling the
interrupt. It should be done in irq_chip->irq_ack, but this function
is not called in handle_nested_irq(). So executing function
txgbe_gpio_irq_ack() manually in txgbe_gpio_irq_handler().

Fixes: aefd013624 ("net: txgbe: use irq_domain for interrupt controller")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20240301092956.18544-2-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:13:04 +01:00
Jiawen Wu
b4a2496c17 net: txgbe: fix GPIO interrupt blocking
The register of GPIO interrupt status is masked before MAC IRQ
is enabled. This is because of hardware deficiency. So manually
clear the interrupt status before using them. Otherwise, GPIO
interrupts will never be reported again. There is a workaround for
clearing interrupts to set GPIO EOI in txgbe_up_complete().

Fixes: aefd013624 ("net: txgbe: use irq_domain for interrupt controller")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20240301092956.18544-1-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-05 11:13:04 +01:00
Chengming Zhou
fae1b01293 slab: remove PARTIAL_NODE slab_state
The PARTIAL_NODE slab_state has gone with SLAB removed, so just
remove it.

Signed-off-by: Chengming Zhou <chengming.zhou@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
2024-03-05 11:12:47 +01:00
Kees Cook
fb57550fcb string: Convert helpers selftest to KUnit
Convert test-string_helpers.c to KUnit so it can be easily run with
everything else.

Failure reporting doesn't need to be open-coded in most places, for
example, forcing a failure in the expected output for upper/lower
testing looks like this:

[12:18:43] # test_upper_lower: EXPECTATION FAILED at lib/string_helpers_kunit.c:579
[12:18:43] Expected dst == strings_upper[i].out, but
[12:18:43]     dst == "ABCDEFGH1234567890TEST"
[12:18:43]     strings_upper[i].out == "ABCDEFGH1234567890TeST"
[12:18:43] [FAILED] test_upper_lower

Currently passes without problems:

$ ./tools/testing/kunit/kunit.py run string_helpers
...
[12:23:55] Starting KUnit Kernel (1/1)...
[12:23:55] ============================================================
[12:23:55] =============== string_helpers (3 subtests) ================
[12:23:55] [PASSED] test_get_size
[12:23:55] [PASSED] test_upper_lower
[12:23:55] [PASSED] test_unescape
[12:23:55] ================= [PASSED] string_helpers ==================
[12:23:55] ============================================================
[12:23:55] Testing complete. Ran 3 tests: passed: 3
[12:23:55] Elapsed time: 6.709s total, 0.001s configuring, 6.591s building, 0.066s running

Link: https://lore.kernel.org/r/20240301202732.2688342-2-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-03-05 01:55:28 -08:00
Kees Cook
29d8568849 string: Convert selftest to KUnit
Convert test_string.c to KUnit so it can be easily run with everything
else.

Additional text context is retained for failure reporting. For example,
when forcing a bad match, we can see the loop counters reported for the
memset() tests:

[09:21:52]     # test_memset64: ASSERTION FAILED at lib/string_kunit.c:93
[09:21:52]     Expected v == 0xa2a1a1a1a1a1a1a1ULL, but
[09:21:52]         v == -6799976246779207263 (0xa1a1a1a1a1a1a1a1)
[09:21:52]         0xa2a1a1a1a1a1a1a1ULL == -6727918652741279327 (0xa2a1a1a1a1a1a1a1)
[09:21:52] i:0 j:0 k:0
[09:21:52] [FAILED] test_memset64

Currently passes without problems:

$ ./tools/testing/kunit/kunit.py run string
...
[09:37:40] Starting KUnit Kernel (1/1)...
[09:37:40] ============================================================
[09:37:40] =================== string (6 subtests) ====================
[09:37:40] [PASSED] test_memset16
[09:37:40] [PASSED] test_memset32
[09:37:40] [PASSED] test_memset64
[09:37:40] [PASSED] test_strchr
[09:37:40] [PASSED] test_strnchr
[09:37:40] [PASSED] test_strspn
[09:37:40] ===================== [PASSED] string ======================
[09:37:40] ============================================================
[09:37:40] Testing complete. Ran 6 tests: passed: 6
[09:37:40] Elapsed time: 6.730s total, 0.001s configuring, 6.562s building, 0.131s running

Link: https://lore.kernel.org/r/20240301202732.2688342-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2024-03-05 01:55:28 -08:00
Mike Yu
8688ab2170 xfrm: set skb control buffer based on packet offload as well
In packet offload, packets are not encrypted in XFRM stack, so
the next network layer which the packets will be forwarded to
should depend on where the packet came from (either xfrm4_output
or xfrm6_output) rather than the matched SA's family type.

Test: verified IPv6-in-IPv4 packets on Android device with
      IPsec packet offload enabled
Signed-off-by: Mike Yu <yumike@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-03-05 10:49:44 +01:00
Mike Yu
d4872d70fc xfrm: fix xfrm child route lookup for packet offload
In current code, xfrm_bundle_create() always uses the matched
SA's family type to look up a xfrm child route for the skb.
The route returned by xfrm_dst_lookup() will eventually be
used in xfrm_output_resume() (skb_dst(skb)->ops->local_out()).

If packet offload is used, the above behavior can lead to
calling ip_local_out() for an IPv6 packet or calling
ip6_local_out() for an IPv4 packet, which is likely to fail.

This change fixes the behavior by checking if the matched SA
has packet offload enabled. If not, keep the same behavior;
if yes, use the matched SP's family type for the lookup.

Test: verified IPv6-in-IPv4 packets on Android device with
      IPsec packet offload enabled
Signed-off-by: Mike Yu <yumike@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-03-05 10:48:18 +01:00
Bart Van Assche
961ebd1205 fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion
The first kiocb_set_cancel_fn() argument may point at a struct kiocb
that is not embedded inside struct aio_kiocb. With the current code,
depending on the compiler, the req->ki_ctx read happens either before
the IOCB_AIO_RW test or after that test. Move the req->ki_ctx read such
that it is guaranteed that the IOCB_AIO_RW test happens first.

Reported-by: Eric Biggers <ebiggers@kernel.org>
Cc: Benjamin LaHaise <ben@communityfibre.ca>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Avi Kivity <avi@scylladb.com>
Cc: Sandeep Dhavale <dhavale@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: stable@vger.kernel.org
Fixes: b820de741a ("fs/aio: Restrict kiocb_set_cancel_fn() to I/O submitted via libaio")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240304235715.3790858-1-bvanassche@acm.org
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-03-05 10:40:58 +01:00
Ville Syrjälä
0b385be4c3 drm/i915: Don't explode when the dig port we don't have an AUX CH
The icl+ power well code currently assumes that every AUX power
well maps to an encoder which is using said power well. That is
by no menas guaranteed as we:
- only register encoders for ports declared in the VBT
- combo PHY HDMI-only encoder no longer get an AUX CH since
  commit 9856308c94 ("drm/i915: Only populate aux_ch if really needed")

However we have places such as intel_power_domains_sanitize_state()
that blindly traverse all the possible power wells. So these bits
of code may very well encounbter an aux power well with no associated
encoder.

In this particular case the BIOS seems to have left one AUX power
well enabled even though we're dealing with a HDMI only encoder
on a combo PHY. We then proceed to turn off said power well and
explode when we can't find a matching encoder. As a short term fix
we should be able to just skip the PHY related parts of the power
well programming since we know this situation can only happen with
combo PHYs.

Another option might be to go back to always picking an AUX CH for
all encoders. However I'm a bit wary about that since we might in
theory end up conflicting with the VBT AUX CH assignment. Also
that wouldn't help with encoders not declared in the VBT, should
we ever need to poke the corresponding power wells.

Longer term we need to figure out what the actual relationship
is between the PHY vs. AUX CH vs. AUX power well. Currently this
is entirely unclear.

Cc: stable@vger.kernel.org
Fixes: 9856308c94 ("drm/i915: Only populate aux_ch if really needed")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10184
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240223203216.15210-1-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 6a8c66bf0e)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2024-03-05 11:32:50 +02:00
Harshit Mogalapalli
0314cebb29 platform/x86/amd/pmf: Fix missing error code in amd_pmf_init_smart_pc()
On the error path, assign -ENOMEM to ret when memory allocation of
"dev->prev_data" fails.

Fixes: e709615058 ("platform/x86/amd/pmf: Fixup error handling for amd_pmf_init_smart_pc()")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20240226144011.2100804-1-harshit.m.mogalapalli@oracle.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2024-03-05 10:17:07 +01:00
Hans de Goede
aec7d25b49 platform/x86: p2sb: On Goldmont only cache P2SB and SPI devfn BAR
On Goldmont p2sb_bar() only ever gets called for 2 devices, the actual P2SB
devfn 13,0 and the SPI controller which is part of the P2SB, devfn 13,2.

But the current p2sb code tries to cache BAR0 info for all of
devfn 13,0 to 13,7 . This involves calling pci_scan_single_device()
for device 13 functions 0-7 and the hw does not seem to like
pci_scan_single_device() getting called for some of the other hidden
devices. E.g. on an ASUS VivoBook D540NV-GQ065T this leads to continuous
ACPI errors leading to high CPU usage.

Fix this by only caching BAR0 info and thus only calling
pci_scan_single_device() for the P2SB and the SPI controller.

Fixes: 5913320eb0 ("platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe")
Reported-by: Danil Rybakov <danilrybakov249@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218531
Tested-by: Danil Rybakov <danilrybakov249@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240304134356.305375-2-hdegoede@redhat.com
2024-03-05 10:16:27 +01:00
Andy Chi
a17bd44c01 ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook
The HP EliteBook using ALC236 codec which using 0x02 to
control mute LED and 0x01 to control micmute LED.
Therefore, add a quirk to make it works.

Signed-off-by: Andy Chi <andy.chi@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20240304134033.773348-1-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2024-03-05 10:01:13 +01:00
Bart Van Assche
28468cbed9 Revert "fs/aio: Make io_cancel() generate completions again"
Patch "fs/aio: Make io_cancel() generate completions again" is based on the
assumption that calling kiocb->ki_cancel() does not complete R/W requests.
This is incorrect: the two drivers that call kiocb_set_cancel_fn() callers
set a cancellation function that calls usb_ep_dequeue(). According to its
documentation, usb_ep_dequeue() calls the completion routine with status
-ECONNRESET. Hence this revert.

Cc: Benjamin LaHaise <ben@communityfibre.ca>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Avi Kivity <avi@scylladb.com>
Cc: Sandeep Dhavale <dhavale@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: stable@vger.kernel.org
Reported-by: syzbot+b91eb2ed18f599dd3c31@syzkaller.appspotmail.com
Fixes: 54cbc058d8 ("fs/aio: Make io_cancel() generate completions again")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240304182945.3646109-1-bvanassche@acm.org
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-03-05 10:00:57 +01:00
Daniel Vetter
d6a209dd76 Merge tag 'drm-intel-fixes-2024-03-01' of https://anongit.freedesktop.org/git/drm/drm-intel into drm-fixes
- Fix to extract HDCP information from primary connector
- Check for NULL mmu_interval_notifier before removing

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZeGOUTfiA0_FNKLg@jlahtine-mobl.ger.corp.intel.com
2024-03-05 09:54:12 +01:00
Tvrtko Ursulin
9b467b4257 MAINTAINERS: Update email address for Tvrtko Ursulin
I will lose access to my @.*intel.com e-mail addresses soon so let me
adjust the maintainers entry and update the mailmap too.

While at it consolidate a few other of my old emails to point to the
main one.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228142240.2539358-1-tvrtko.ursulin@linux.intel.com
2024-03-05 09:52:08 +01:00
Elbert Mai
12fc84e8c4 usb: Export BOS descriptor to sysfs
Motivation
----------

The binary device object store (BOS) of a USB device consists of the BOS
descriptor followed by a set of device capability descriptors. One that is
of interest to users is the platform descriptor. This contains a 128-bit
UUID and arbitrary data, and it allows parties outside of USB-IF to add
additional metadata about a USB device in a standards-compliant manner.
Notable examples include the WebUSB and Microsoft OS 2.0 descriptors.

The kernel already retrieves and caches the BOS from USB devices if its
bcdUSB is >= 0x0201. Because the BOS is flexible and extensible, we export
the entire BOS to sysfs so users can retrieve whatever device capabilities
they desire, without requiring USB I/O or elevated permissions.

Implementation
--------------

Add bos_descriptors attribute to sysfs. This is a binary file and it works
the same way as the existing descriptors attribute. The file exists only if
the BOS is present in the USB device.

Also create a binary attribute group, so the driver core can handle the
creation of both the descriptors and bos_descriptors attributes in sysfs.

Signed-off-by: Elbert Mai <code@elbertmai.com>
Link: https://lore.kernel.org/r/20240305002301.95323-1-code@elbertmai.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-03-05 07:57:23 +00:00
Toru Katagiri
b1a8da9ff1 USB: serial: cp210x: add pid/vid for TDK NC0110013M and MM0110113M
TDK NC0110013M and MM0110113M have custom USB IDs for CP210x,
so we need to add them to the driver.

Signed-off-by: Toru Katagiri <Toru.Katagiri@tdk.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
2024-03-05 07:51:37 +01:00
Jakub Kicinski
4daa873133 mlx5-fixes-2024-03-01
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Merge tag 'mlx5-fixes-2024-03-01' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5 fixes 2024-03-01

This series provides bug fixes to mlx5 driver.
Please pull and let me know if there is any problem.

* tag 'mlx5-fixes-2024-03-01' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5e: Switch to using _bh variant of of spinlock API in port timestamping NAPI poll context
  net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map
  net/mlx5e: Fix MACsec state loss upon state update in offload path
  net/mlx5e: Change the warning when ignore_flow_level is not supported
  net/mlx5: Check capability for fw_reset
  net/mlx5: Fix fw reporter diagnose output
  net/mlx5: E-switch, Change flow rule destination checking
  Revert "net/mlx5e: Check the number of elements before walk TC rhashtable"
  Revert "net/mlx5: Block entering switchdev mode with ns inconsistency"
====================

Link: https://lore.kernel.org/r/20240302070318.62997-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 21:00:28 -08:00
Jakub Kicinski
47fe2fc1a2 Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2024-03-01 (ixgbe, i40e, ice)

This series contains updates to ixgbe, i40e, and ice drivers.

Maciej corrects disable flow for ixgbe, i40e, and ice drivers which could
cause non-functional interface with AF_XDP.

Michal restores host configuration when changing MSI-X count for VFs on
ice driver.

* '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: reconfig host after changing MSI-X on VF
  ice: reorder disabling IRQ and NAPI in ice_qp_dis
  i40e: disable NAPI right after disabling irqs when handling xsk_pool
  ixgbe: {dis, en}able irqs in ixgbe_txrx_ring_{dis, en}able
====================

Link: https://lore.kernel.org/r/20240301192549.2993798-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:56:40 -08:00
Jakub Kicinski
b307e25d4e Merge branch 'intel-wired-lan-driver-updates-2024-02-28-ixgbe-igc-igb-e1000e-e100'
Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2024-02-28 (ixgbe, igc, igb, e1000e, e100)

This series contains updates to ixgbe, igc, igb, e1000e, and e100
drivers.

Jon Maxwell makes module parameter values readable in sysfs for ixgbe,
igb, and e100.

Ernesto Castellotti adds support for 1000BASE-BX on ixgbe.

Arnd Bergmann fixes build failure due to dependency issues for igc.

Vitaly refactors error check to be more concise and prevent future
issues on e1000e.

v1: https://lore.kernel.org/netdev/20240229004135.741586-1-anthony.l.nguyen@intel.com/
====================

Link: https://lore.kernel.org/r/20240301184806.2634508-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:50:01 -08:00
Vitaly Lifshits
662200e324 e1000e: Minor flow correction in e1000_shutdown function
Add curly braces to avoid entering to an if statement where it is not
always required in e1000_shutdown function.
This improves code readability and might prevent non-deterministic
behaviour in the future.

Signed-off-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240301184806.2634508-5-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:49:59 -08:00
Arnd Bergmann
30654f0eec igc: fix LEDS_CLASS dependency
When IGC is built-in but LEDS_CLASS is a loadable module, there is
a link failure:

x86_64-linux-ld: drivers/net/ethernet/intel/igc/igc_leds.o: in function `igc_led_setup':
igc_leds.c:(.text+0x75c): undefined reference to `devm_led_classdev_register_ext'

Add another dependency that prevents this combination.

Fixes: ea578703b0 ("igc: Add support for LEDs on i225/i226")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240301184806.2634508-4-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:49:58 -08:00
Ernesto Castellotti
1b43e0d20f ixgbe: Add 1000BASE-BX support
Added support for 1000BASE-BX, i.e. Gigabit Ethernet over single strand
of single-mode fiber.
The initialization of a 1000BASE-BX SFP is the same as 1000BASE-SX/LX
with the only difference that the Bit Rate Nominal Value must be
checked to make sure it is a Gigabit Ethernet transceiver, as described
by the SFF-8472 specification.

This was tested with the FS.com SFP-GE-BX 1310/1490nm 10km transceiver:
$ ethtool -m eth4
        Identifier                                : 0x03 (SFP)
        Extended identifier                       : 0x04 (GBIC/SFP defined by 2-wire interface ID)
        Connector                                 : 0x07 (LC)
        Transceiver codes                         : 0x00 0x00 0x00 0x40 0x00 0x00 0x00 0x00 0x00
        Transceiver type                          : Ethernet: BASE-BX10
        Encoding                                  : 0x01 (8B/10B)
        BR, Nominal                               : 1300MBd
        Rate identifier                           : 0x00 (unspecified)
        Length (SMF,km)                           : 10km
        Length (SMF)                              : 10000m
        Length (50um)                             : 0m
        Length (62.5um)                           : 0m
        Length (Copper)                           : 0m
        Length (OM3)                              : 0m
        Laser wavelength                          : 1310nm
        Vendor name                               : FS
        Vendor OUI                                : 64:9d:99
        Vendor PN                                 : SFP-GE-BX
        Vendor rev                                :
        Option values                             : 0x20 0x0a
        Option                                    : RX_LOS implemented
        Option                                    : TX_FAULT implemented
        Option                                    : Power level 3 requirement
        BR margin, max                            : 0%
        BR margin, min                            : 0%
        Vendor SN                                 : S2202359108
        Date code                                 : 220307
        Optical diagnostics support               : Yes
        Laser bias current                        : 17.650 mA
        Laser output power                        : 0.2132 mW / -6.71 dBm
        Receiver signal average optical power     : 0.2740 mW / -5.62 dBm
        Module temperature                        : 47.30 degrees C / 117.13 degrees F
        Module voltage                            : 3.2576 V
        Alarm/warning flags implemented           : Yes
        Laser bias current high alarm             : Off
        Laser bias current low alarm              : Off
        Laser bias current high warning           : Off
        Laser bias current low warning            : Off
        Laser output power high alarm             : Off
        Laser output power low alarm              : Off
        Laser output power high warning           : Off
        Laser output power low warning            : Off
        Module temperature high alarm             : Off
        Module temperature low alarm              : Off
        Module temperature high warning           : Off
        Module temperature low warning            : Off
        Module voltage high alarm                 : Off
        Module voltage low alarm                  : Off
        Module voltage high warning               : Off
        Module voltage low warning                : Off
        Laser rx power high alarm                 : Off
        Laser rx power low alarm                  : Off
        Laser rx power high warning               : Off
        Laser rx power low warning                : Off
        Laser bias current high alarm threshold   : 110.000 mA
        Laser bias current low alarm threshold    : 1.000 mA
        Laser bias current high warning threshold : 100.000 mA
        Laser bias current low warning threshold  : 1.000 mA
        Laser output power high alarm threshold   : 0.7079 mW / -1.50 dBm
        Laser output power low alarm threshold    : 0.0891 mW / -10.50 dBm
        Laser output power high warning threshold : 0.6310 mW / -2.00 dBm
        Laser output power low warning threshold  : 0.1000 mW / -10.00 dBm
        Module temperature high alarm threshold   : 90.00 degrees C / 194.00 degrees F
        Module temperature low alarm threshold    : -45.00 degrees C / -49.00 degrees F
        Module temperature high warning threshold : 85.00 degrees C / 185.00 degrees F
        Module temperature low warning threshold  : -40.00 degrees C / -40.00 degrees F
        Module voltage high alarm threshold       : 3.7950 V
        Module voltage low alarm threshold        : 2.8050 V
        Module voltage high warning threshold     : 3.4650 V
        Module voltage low warning threshold      : 3.1350 V
        Laser rx power high alarm threshold       : 0.7079 mW / -1.50 dBm
        Laser rx power low alarm threshold        : 0.0028 mW / -25.53 dBm
        Laser rx power high warning threshold     : 0.6310 mW / -2.00 dBm
        Laser rx power low warning threshold      : 0.0032 mW / -24.95 dBm

Signed-off-by: Ernesto Castellotti <ernesto@castellotti.net>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240301184806.2634508-3-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:49:58 -08:00
Jon Maxwell
aa9870f5c7 intel: make module parameters readable in sys filesystem
Linux users sometimes need an easy way to check current values of module
parameters. For example the module may be manually reloaded with different
parameters. Make these visible and readable in the /sys filesystem to allow
that. But don't make the "debug" module parameter visible as debugging is
enabled via ethtool msglvl.

Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240301184806.2634508-2-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:49:58 -08:00
Eric Dumazet
345a6e2631 tcp: align tcp_sock_write_rx group
Stephen Rothwell and kernel test robot reported that some arches
(parisc, hexagon) and/or compilers would not like blamed commit.

Lets make sure tcp_sock_write_rx group does not start with a hole.

While we are at it, correct tcp_sock_write_tx CACHELINE_ASSERT_GROUP_SIZE()
since after the blamed commit, we went to 105 bytes.

Fixes: 9912362205 ("tcp: remove some holes in struct tcp_sock")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/netdev/20240301121108.5d39e4f9@canb.auug.org.au/
Closes: https://lore.kernel.org/oe-kbuild-all/202403011451.csPYOS3C-lkp@intel.com/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org> # build-tested
Link: https://lore.kernel.org/r/20240301171945.2958176-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:46:18 -08:00
Horatiu Vultur
89d72d4125 net: sparx5: Fix use after free inside sparx5_del_mact_entry
Based on the static analyzis of the code it looks like when an entry
from the MAC table was removed, the entry was still used after being
freed. More precise the vid of the mac_entry was used after calling
devm_kfree on the mac_entry.
The fix consists in first using the vid of the mac_entry to delete the
entry from the HW and after that to free it.

Fixes: b37a1bae74 ("net: sparx5: add mactable support")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240301080608.3053468-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 20:38:22 -08:00
Matthew Sakai
2a7f925bc2 dm vdo: remove meaningless version number constant
Also remove related log messages.

Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2024-03-04 23:11:11 -05:00
Matthew Sakai
7eb30fe18f dm vdo: remove vdo_perform_once
Remove obsolete function vdo_perform_once. Instead, initialize
necessary module state when loading the module.

Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2024-03-04 23:11:11 -05:00
Pedro Tammela
dcfaf1f758 selftests/tc-testing: require an up to date iproute2 for blockcast tests
Add the dependsOn test check for all the mirred blockcast tests.
It will prevent the issue reported by LKFT which happens when an older
iproute2 is used to run the current tdc.

Tests are skipped if the dependsOn check fails.

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://lore.kernel.org/r/20240229143825.1373550-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 19:30:57 -08:00
Prabhav Kumar Vaish
fb0f023081 selftests: net: Correct couple of spelling mistakes
Changes :
	- "excercise" is corrected to "exercise" in drivers/net/mlxsw/spectrum-2/tc_flower.sh
	- "mutliple" is corrected to "multiple" in drivers/net/netdevsim/ethtool-fec.sh

Signed-off-by: Prabhav Kumar Vaish <pvkumar5749404@gmail.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240228120701.422264-1-pvkumar5749404@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 18:33:47 -08:00
Chengming Zhou
26e93839d6 mm/zsmalloc: don't need to reserve LSB in handle
We will save allocated tag in the object header to indicate that it's
allocated.

	handle |= OBJ_ALLOCATED_TAG;

So the object header needs to reserve LSB for this tag bit.

But the handle itself doesn't need to reserve LSB to save tag, since it's
only used to find the position of object, by (pfn + obj_idx).  So remove
LSB reserve from handle, one more bit can be used as obj_idx.

Link: https://lkml.kernel.org/r/20240228023854.3511239-1-chengming.zhou@linux.dev
Signed-off-by: Chengming Zhou <chengming.zhou@linux.dev>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:28 -08:00
John Hubbard
6c1b748ebf mm/memory.c: do_numa_page(): remove a redundant page table read
do_numa_page() is reading from the same page table entry, twice, while
holding the page table lock: once while checking that the pte hasn't
changed, and again in order to modify the pte.

Instead, just read the pte once, and save it in the same old_pte variable
that already exists.  This has no effect on behavior, other than to
provide a tiny potential improvement to performance, by avoiding the
redundant memory read (which the compiler cannot elide, due to
READ_ONCE()).

Also improve the associated comments nearby.

Link: https://lkml.kernel.org/r/20240228034151.459370-1-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:27 -08:00
Richard Chang
c8b3600312 mm: add alloc_contig_migrate_range allocation statistics
alloc_contig_migrate_range has every information to be able to understand
big contiguous allocation latency.  For example, how many pages are
migrated, how many times they were needed to unmap from page tables.

This patch adds the trace event to collect the allocation statistics.  In
the field, it was quite useful to understand CMA allocation latency.

[akpm@linux-foundation.org: a/trace_mm_alloc_config_migrate_range_info_enabled/trace_mm_alloc_contig_migrate_range_info_enabled]
Link: https://lkml.kernel.org/r/20240228051127.2859472-1-richardycc@google.com
Signed-off-by: Richard Chang <richardycc@google.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org.
Cc: Martin Liu <liumartin@google.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:27 -08:00
Matthew Wilcox (Oracle)
435a755481 mm: use folio more widely in __split_huge_page
We already have a folio; use it instead of the head page where reasonable.
Saves a couple of calls to compound_head() and elimimnates a few
references to page->mapping.

Link: https://lkml.kernel.org/r/20240228164326.1355045-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:27 -08:00
Huang Shijie
d3246b6ee4 crash_core: export vmemmap when CONFIG_SPARSEMEM_VMEMMAP is enabled
In memory_model.h, if CONFIG_SPARSEMEM_VMEMMAP is configed, kernel will
use vmemmap to do the __pfn_to_page/page_to_pfn, and kernel will not use
the "classic sparse" to do the __pfn_to_page/page_to_pfn.

So export the vmemmap when CONFIG_SPARSEMEM_VMEMMAP is configed.  This
makes the user applications (crash, etc) get faster
pfn_to_page/page_to_pfn operations too.

Link: https://lkml.kernel.org/r/20240227014952.3184-1-shijie@os.amperecomputing.com
Signed-off-by: Huang Shijie <shijie@os.amperecomputing.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Kazuhito Hagio <k-hagio-ab@nec.com>
Cc: Lianbo Jiang <lijiang@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:27 -08:00
Changbin Du
8f8cd6c0a4 modules: wait do_free_init correctly
The synchronization here is to ensure the ordering of freeing of a module
init so that it happens before W+X checking.  It is worth noting it is not
that the freeing was not happening, it is just that our sanity checkers
raced against the permission checkers which assume init memory is already
gone.

Commit 1a7b7d9220 ("modules: Use vmalloc special flag") moved calling
do_free_init() into a global workqueue instead of relying on it being
called through call_rcu(..., do_free_init), which used to allowed us call
do_free_init() asynchronously after the end of a subsequent grace period. 
The move to a global workqueue broke the gaurantees for code which needed
to be sure the do_free_init() would complete with rcu_barrier().  To fix
this callers which used to rely on rcu_barrier() must now instead use
flush_work(&init_free_wq).

Without this fix, we still could encounter false positive reports in W+X
checking since the rcu_barrier() here can not ensure the ordering now.

Even worse, the rcu_barrier() can introduce significant delay.  Eric
Chanudet reported that the rcu_barrier introduces ~0.1s delay on a
PREEMPT_RT kernel.

  [    0.291444] Freeing unused kernel memory: 5568K
  [    0.402442] Run /sbin/init as init process

With this fix, the above delay can be eliminated.

Link: https://lkml.kernel.org/r/20240227023546.2490667-1-changbin.du@huawei.com
Fixes: 1a7b7d9220 ("modules: Use vmalloc special flag")
Signed-off-by: Changbin Du <changbin.du@huawei.com>
Tested-by: Eric Chanudet <echanude@redhat.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Xiaoyi Su <suxiaoyi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:27 -08:00
Matthew Wilcox (Oracle)
63b774993d mm: convert free_swap_cache() to take a folio
All but one caller already has a folio, so convert
free_page_and_swap_cache() to have a folio and remove the call to
page_folio().

Link: https://lkml.kernel.org/r/20240227174254.710559-19-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:26 -08:00
Matthew Wilcox (Oracle)
d4111eecdc mm: use a folio in __collapse_huge_page_copy_succeeded()
These pages are all chained together through the lru list, so we know
they're folios.  Use the folio APIs to save three hidden calls to
compound_head().

Link: https://lkml.kernel.org/r/20240227174254.710559-18-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:26 -08:00
Matthew Wilcox (Oracle)
4907e80b76 mm: convert free_pages_and_swap_cache() to use folios_put()
Process the pages in batch-sized quantities instead of all-at-once.

Link: https://lkml.kernel.org/r/20240227174254.710559-17-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:26 -08:00
Matthew Wilcox (Oracle)
f39ec4dcb9 mm: remove lru_to_page()
The last user was removed over a year ago; remove the definition.

Link: https://lkml.kernel.org/r/20240227174254.710559-16-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:26 -08:00
Matthew Wilcox (Oracle)
8b7b0a5eee mm: remove free_unref_page_list()
All callers now use free_unref_folios() so we can delete this function.

Link: https://lkml.kernel.org/r/20240227174254.710559-15-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-04 17:01:25 -08:00