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It serves no purpose beyond adding unnecessray argument passed to the
filter callback. Just get rid of it, no one is actually using it.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-4-andrii@kernel.org
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To avoid unnecessarily taking a (brief) refcount on uprobe during
breakpoint handling in handle_swbp for entry uprobes, make find_uprobe()
not take refcount, but protect the lifetime of a uprobe instance with
RCU. This improves scalability, as refcount gets quite expensive due to
cache line bouncing between multiple CPUs.
Specifically, we utilize our own uprobe-specific SRCU instance for this
RCU protection. put_uprobe() will delay actual kfree() using call_srcu().
For now, uretprobe and single-stepping handling will still acquire
refcount as necessary. We'll address these issues in follow up patches
by making them use SRCU with timeout.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-3-andrii@kernel.org
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Revamp how struct uprobe is refcounted, and thus how its lifetime is
managed.
Right now, there are a few possible "owners" of uprobe refcount:
- uprobes_tree RB tree assumes one refcount when uprobe is registered
and added to the lookup tree;
- while uprobe is triggered and kernel is handling it in the breakpoint
handler code, temporary refcount bump is done to keep uprobe from
being freed;
- if we have uretprobe requested on a given struct uprobe instance, we
take another refcount to keep uprobe alive until user space code
returns from the function and triggers return handler.
The uprobe_tree's extra refcount of 1 is confusing and problematic. No
matter how many actual consumers are attached, they all share the same
refcount, and we have an extra logic to drop the "last" (which might not
really be last) refcount once uprobe's consumer list becomes empty.
This is unconventional and has to be kept in mind as a special case all
the time. Further, because of this design we have the situations where
find_uprobe() will find uprobe, bump refcount, return it to the caller,
but that uprobe will still need uprobe_is_active() check, after which
the caller is required to drop refcount and try again. This is just too
many details leaking to the higher level logic.
This patch changes refcounting scheme in such a way as to not have
uprobes_tree keeping extra refcount for struct uprobe. Instead, each
uprobe_consumer is assuming its own refcount, which will be dropped
when consumer is unregistered. Other than that, all the active users of
uprobe (entry and return uprobe handling code) keeps exactly the same
refcounting approach.
With the above setup, once uprobe's refcount drops to zero, we need to
make sure that uprobe's "destructor" removes uprobe from uprobes_tree,
of course. This, though, races with uprobe entry handling code in
handle_swbp(), which, through find_active_uprobe()->find_uprobe() lookup,
can race with uprobe being destroyed after refcount drops to zero (e.g.,
due to uprobe_consumer unregistering). So we add try_get_uprobe(), which
will attempt to bump refcount, unless it already is zero. Caller needs
to guarantee that uprobe instance won't be freed in parallel, which is
the case while we keep uprobes_treelock (for read or write, doesn't
matter).
Note also, we now don't leak the race between registration and
unregistration, so we remove the retry logic completely. If
find_uprobe() returns valid uprobe, it's guaranteed to remain in
uprobes_tree with properly incremented refcount. The race is handled
inside __insert_uprobe() and put_uprobe() working together:
__insert_uprobe() will remove uprobe from RB-tree, if it can't bump
refcount and will retry to insert the new uprobe instance. put_uprobe()
won't attempt to remove uprobe from RB-tree, if it's already not there.
All that is protected by uprobes_treelock, which keeps things simple.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903174603.3554182-2-andrii@kernel.org
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If bpf_link_prime() fails, bpf_uprobe_multi_link_attach() goes to the
error_free label and frees the array of bpf_uprobe's without calling
bpf_uprobe_unregister().
This leaks bpf_uprobe->uprobe and worse, this frees bpf_uprobe->consumer
without removing it from the uprobe->consumers list.
Fixes: 89ae89f53d20 ("bpf: Add multi uprobe link")
Closes: https://lore.kernel.org/all/000000000000382d39061f59f2dd@google.com/
Reported-by: syzbot+f7a1c2c2711e4a780f19@syzkaller.appspotmail.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: syzbot+f7a1c2c2711e4a780f19@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240813152524.GA7292@redhat.com
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In perf_adjust_period, we will first calculate period, and then use
this period to calculate delta. However, when delta is less than 0,
there will be a deviation compared to when delta is greater than or
equal to 0. For example, when delta is in the range of [-14,-1], the
range of delta = delta + 7 is between [-7,6], so the final value of
delta/8 is 0. Therefore, the impact of -1 and -2 will be ignored.
This is unacceptable when the target period is very short, because
we will lose a lot of samples.
Here are some tests and analyzes:
before:
# perf record -e cs -F 1000 ./a.out
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.022 MB perf.data (518 samples) ]
# perf script
...
a.out 396 257.956048: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.957891: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.959730: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.961545: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.963355: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.965163: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.966973: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.968785: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.970593: 23 cs: ffffffff81f4eeec schedul>
...
after:
# perf record -e cs -F 1000 ./a.out
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.058 MB perf.data (1466 samples) ]
# perf script
...
a.out 395 59.338813: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.339707: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.340682: 13 cs: ffffffff81f4eeec schedul>
a.out 395 59.341751: 13 cs: ffffffff81f4eeec schedul>
a.out 395 59.342799: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.343765: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.344651: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.345539: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.346502: 13 cs: ffffffff81f4eeec schedul>
...
test.c
int main() {
for (int i = 0; i < 20000; i++)
usleep(10);
return 0;
}
# time ./a.out
real 0m1.583s
user 0m0.040s
sys 0m0.298s
The above results were tested on x86-64 qemu with KVM enabled using
test.c as test program. Ideally, we should have around 1500 samples,
but the previous algorithm had only about 500, whereas the modified
algorithm now has about 1400. Further more, the new version shows 1
sample per 0.001s, while the previous one is 1 sample per 0.002s.This
indicates that the new algorithm is more sensitive to small negative
values compared to old algorithm.
Fixes: bd2b5b12849a ("perf_counter: More aggressive frequency adjustment")
Signed-off-by: Luo Gengkun <luogengkun@huaweicloud.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20240831074316.2106159-2-luogengkun@huaweicloud.com
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Pull NVMe fixes from Keith:
"nvme fixes for Linux 6.11
- Sparse fix on static symbol (Jinjie)
- Misleading warning message fix (Keith)
- TCP command allocation handling fix (Maurizio)
- PCI tagset allocation handling fix (Keith)
- Low-power quirk for Samsung (Georg)
- Queue limits fix for zone devices (Christoph)
- Target protocol behavior fix (Maurizio)"
* tag 'nvme-6.11-2024-09-05' of git://git.infradead.org/nvme:
nvmet: Identify-Active Namespace ID List command should reject invalid nsid
nvme: set BLK_FEAT_ZONED for ZNS multipath disks
nvme-pci: Add sleep quirk for Samsung 990 Evo
nvme-pci: allocate tagset on reset if necessary
nvmet-tcp: fix kernel crash if commands allocation fails
nvme: use better description for async reset reason
nvmet: Make nvmet_debugfs static
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Merge series from amergnat@baylibre.com:
This serie aim to add the following audio support for the Genio 350-evk:
- Playback
- 2ch Headset Jack (Earphone)
- 1ch Line-out Jack (Speaker)
- 8ch HDMI Tx
- Capture
- 1ch DMIC (On-board Digital Microphone)
- 1ch AMIC (On-board Analogic Microphone)
- 1ch Headset Jack (External Analogic Microphone)
Of course, HDMI playback need the MT8365 display patches [1] and a DTS
change documented in "mediatek,mt8365-mt6357.yaml".
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/drivers
Amlogic drivers changes for v6.12:
- Support new Amlogic SoCs in meson-gx-ao-secure & meson-gx-socinfo
* tag 'amlogic-drivers-for-v6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
soc: amlogic: meson-gx-socinfo: add new SoCs id
dt-bindings: arm: amlogic: meson-gx-ao-secure: support more SoCs
Link: https://lore.kernel.org/r/577ad7fe-19b1-468a-b994-573855493fd7@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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"lm75" without any vendor is undocumented. It works with the Linux
kernel since the I2C subsystem will do matches of the compatible string
without a vendor prefix to the i2c_device_id and/or driver name.
Mostly replace "lm75" with "national,lm75" as that's the original part
vendor and the compatible which matches what "lm75" matched with. In a
couple of cases the node name or compatible gives a clue to the actual
part and vendor and a more specific compatible can be used. In these
cases, it does change the variant the kernel picks.
"nct75" is an OnSemi part which is compatible with TI TMP75C based on
a comparison of the OnSemi NCT75 datasheet and configuration the Linux
driver uses. Adding an OnSemi compatible would be an ABI change.
"nxp,lm75" is most likely an NXP part. Alexander Stein says the i.MX53
boards are a NXP LM75A as well. NXP makes a LM75A and LM75B. Both are
11-bit resolution and 100ms sample time. The "national,lm75a" is
9-bit, so "national,lm75b" is the closest match for both NXP variants.
While we're here, fix the node names to use the generic name
"temperature-sensor".
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com> # am335x-nano.dts
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com> # imx53-mba53.dts, imx53-tqma53.dtsi
Link: https://lore.kernel.org/r/20240816164717.1585629-1-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This 'struct kobj_type' is not modified. It is only used in
kobject_init_and_add() which takes a 'const struct kobj_type *ktype'
parameter.
Constifying this structure and moving it to a read-only section,
and can increase over all security.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240904011434.2010118-1-lihongbo22@huawei.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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In this code, if devm_add_action_or_reset() fails, it will call
max1720x_unregister_ancillary() which in turn calls
i2c_unregister_device(). Thus the call to i2c_unregister_device() on the
following line is not required and is a double unregister. Delete it.
Fixes: 47271a935619 ("power: supply: max1720x: add read support for nvmem")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/9c2f76e7-5679-473b-9b9c-e11b492b96ac@stanley.mountain
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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When the headset is connected, there is no automatic switching of the
capture source - you can only manually select the headset microphone
in pavucontrol.
This patch fixes/activates the inactive microphone of the headset.
Signed-off-by: Vasiliy Kovalev <kovalev@altlinux.org>
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20240905140211.937385-1-kovalev@altlinux.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/dt
Amlogic ARM64 DT changes for v6.12:
- New Boards:
- AW419 (Amlogic C3)
- Power Controller node for Amlogic A5 SoC
- Always-On Secure node for Amlogig A4/T7/C4 & S4 SoCs
- Amlogic A4 & C3 hardware support:
- PLL, SPICC, NOND, SDCard, Ethernet, Watchdog
- Final fixes for DTBs check:
- add clock and clock-names to sound cards
- drop saradc gxlx compatible
* tag 'amlogic-arm64-dt-for-v6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
arm64: dts: amlogic: gxlx-s905l-p271: drop saradc gxlx compatible
arm64: dts: amlogic: add clock and clock-names to sound cards
arm64: dts: amlogic: c3: fix dtbcheck warning
arm64: dts: amlogic: add C3 AW419 board
arm64: dts: amlogic: add some device nodes for C3
dt-bindings: clock: fix C3 PLL input parameter
arm64: dts: amlogic: a4: add ao secure node
arm64: dts: amlogic: t7: add ao secure node
arm64: dts: amlogic: c3: add ao secure node
arm64: dts: amlogic: s4: add ao secure node
arm64: dts: amlogic: add watchdog node for A4 SoCs
arm64: dts: amlogic: enable some device nodes for S4
arm64: dts: amlogic: a5: add power domain controller node
Link: https://lore.kernel.org/r/cc8fb460-5ac0-4b16-8490-8ac9f89f1b7f@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Chi Zhiling reported:
We found a null pointer accessing in tracefs[1], the reason is that the
variable 'ei_child' is set to LIST_POISON1, that means the list was
removed in eventfs_remove_rec. so when access the ei_child->is_freed, the
panic triggered.
by the way, the following script can reproduce this panic
loop1 (){
while true
do
echo "p:kp submit_bio" > /sys/kernel/debug/tracing/kprobe_events
echo "" > /sys/kernel/debug/tracing/kprobe_events
done
}
loop2 (){
while true
do
tree /sys/kernel/debug/tracing/events/kprobes/
done
}
loop1 &
loop2
[1]:
[ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150
[ 1147.968239][T17331] Mem abort info:
[ 1147.971739][T17331] ESR = 0x0000000096000004
[ 1147.976172][T17331] EC = 0x25: DABT (current EL), IL = 32 bits
[ 1147.982171][T17331] SET = 0, FnV = 0
[ 1147.985906][T17331] EA = 0, S1PTW = 0
[ 1147.989734][T17331] FSC = 0x04: level 0 translation fault
[ 1147.995292][T17331] Data abort info:
[ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
[ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges
[ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP
[ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]
[ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G W ------- ---- 6.6.43 #2
[ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650
[ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020
[ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398
[ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398
[ 1148.115969][T17331] sp : ffff80008d56bbd0
[ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000
[ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100
[ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10
[ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000
[ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0
[ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0
[ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862
[ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068
[ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001
[ 1148.198131][T17331] Call trace:
[ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398
[ 1148.205864][T17331] iterate_dir+0x98/0x188
[ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160
[ 1148.215161][T17331] invoke_syscall+0x78/0x108
[ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0
[ 1148.224977][T17331] do_el0_svc+0x24/0x38
[ 1148.228974][T17331] el0_svc+0x40/0x168
[ 1148.232798][T17331] el0t_64_sync_handler+0x120/0x130
[ 1148.237836][T17331] el0t_64_sync+0x1a4/0x1a8
[ 1148.242182][T17331] Code: 54ffff6c f9400676 910006d6 f9000676 (b9405300)
[ 1148.248955][T17331] ---[ end trace 0000000000000000 ]---
The issue is that list_del() is used on an SRCU protected list variable
before the synchronization occurs. This can poison the list pointers while
there is a reader iterating the list.
This is simply fixed by using list_del_rcu() that is specifically made for
this purpose.
Link: https://lore.kernel.org/linux-trace-kernel/20240829085025.3600021-1-chizhiling@163.com/
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20240904131605.640d42b1@gandalf.local.home
Fixes: 43aa6f97c2d03 ("eventfs: Get rid of dentry pointers without refcounts")
Reported-by: Chi Zhiling <chizhiling@kylinos.cn>
Tested-by: Chi Zhiling <chizhiling@kylinos.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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In __tracing_open(), when max latency tracers took place on the cpu,
the time start of its buffer would be updated, then event entries with
timestamps being earlier than start of the buffer would be skipped
(see tracing_iter_reset()).
Softlockup will occur if the kernel is non-preemptible and too many
entries were skipped in the loop that reset every cpu buffer, so add
cond_resched() to avoid it.
Cc: stable@vger.kernel.org
Fixes: 2f26ebd549b9a ("tracing: use timestamp to determine start of latency traces")
Link: https://lore.kernel.org/20240827124654.3817443-1-zhengyejian@huaweicloud.com
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zheng Yejian <zhengyejian@huaweicloud.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/arm
Samsung mach/soc changes for v6.12
1. Few ARM32 machine code cleanups,
2. Add dedicated maintainer entry for ARM64 Exynos850 DTS and driver
code.
* tag 'samsung-soc-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: s3c: remove unused s3c2410_cpu_suspend() declaration
ARM: s3c: remove unused declarations for s3c6400
ARM: s3c: Remove unused s3c_init_uart_irqs() declaration
MAINTAINERS: Add entry for Samsung Exynos850 SoC
ARM: s3c: Drop explicit initialization of struct i2c_device_id::driver_data to 0
Link: https://lore.kernel.org/r/20240827121638.29707-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
Qualcomm driver updates for v6.12
Support is added for making SCM driver configure the system either for a
full or minimal ramdump following a system crash. The ramdump mode is
changed from being enable-only to enable/disable as requested.
The QSEECOM uefisecapp interface is allow-listed on Surface Laptop 7 and
Lenovo Thinkpad T14s, providing EFI variable access.
The change to match the SMD RPM driver based on the SMD channel name is
reverted, in favor of stepping back to OF-based matching, as a means to
get module autoloading to work properly.
AOSS, APR, ICE, OCMEM, PBS and SMP2P drivers has error handling cleaned
up using scoped resources.
Trace events are added to the BWMON and SMP2P drivers, for better
insights into their operations.
The X1E LLCC configuration data is updated based on recommended values.
A number of platforms are added to the in-kernel PD-mapper.
SocInfo driver is extended with IDs from SM7325, QCS8275 and QCS8300
families.
* tag 'qcom-drivers-for-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (33 commits)
firmware: qcom: scm: Allow QSEECOM on Surface Laptop 7 models
dt-bindings: soc: qcom: qcom,pmic-glink: Document SM7325 compatible
soc: qcom: pd_mapper: Add SM7325 compatible
soc: qcom: socinfo: Add Soc IDs for SM7325 family
dt-bindings: arm: qcom,ids: Add IDs for SM7325 family
soc: qcom: socinfo: add QCS8275/QCS8300 SoC ID
dt-bindings: arm: qcom,ids: add SoC ID for QCS8275/QCS8300
soc: qcom: smp2p: use scoped device node handling to simplify error paths
soc: qcom: pbs: use scoped device node handling to simplify error paths
soc: qcom: ocmem: use scoped device node handling to simplify error paths
soc: qcom: ice: use scoped device node handling to simplify error paths
soc: qcom: aoss: simplify with scoped for each OF child loop
soc: qcom: apr: simplify with scoped for each OF child loop
soc: qcom: smd-rpm: add qcom,smd-rpm compatible
dt-bindings: soc: qcom: smd-rpm: add generic compatibles
Revert "soc: qcom: smd-rpm: Match rpmsg channel instead of compatible"
firmware: qcom: scm: Add multiple download mode support
firmware: qcom: scm: Refactor code to support multiple dload mode
soc: qcom: pd_mapper: Add more older platforms without domains
soc: qcom: pd_mapper: Add X1E80100
...
Link: https://lore.kernel.org/r/20240904193042.15118-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into soc/drivers
Microchip AT91 SoC updates for v6.12
It contains:
- support for the Microchip SAM9X7 SoC:
-- power management
-- SoC identification
-- sysreg documentation updates
-- necessary Kconfig updates
* tag 'at91-soc-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: at91: Kconfig: add config flag for SAM9X7 SoC
ARM: at91: add support in SoC driver for new sam9x7
ARM: at91: pm: add sam9x7 SoC init config
ARM: at91: pm: add support for sam9x7 SoC family
dt-bindings: atmel-sysreg: add sam9x7
Link: https://lore.kernel.org/r/20240901133110.2038675-3-claudiu.beznea@tuxon.dev
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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When TSA is compiled as module the following error is reported:
"ucc_mux_set_grant_tsa_bkpt" [drivers/soc/fsl/qe/tsa.ko] undefined!
Indeed, the ucc_mux_set_grant_tsa_bkpt symbol is not exported.
Simply export ucc_mux_set_grant_tsa_bkpt.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202409051409.fszn8rEo-lkp@intel.com/
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap into soc/drivers
ARM: OMAP2+: misc driver updates for v6.12
* tag 'omap-for-v6.12/drivers-signed' of https://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap:
ARM: OMAP2+: Remove obsoleted declaration for gpmc_onenand_init
bus: ti-sysc: Remove excess struct member 'disable_on_idle' description
bus: ti-sysc: Use of_property_present()
Link: https://lore.kernel.org/r/7hcyljarit.fsf@baylibre.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/drivers
i.MX drivers changes for 6.12:
- A couple of imx-weim bus driver changes from Wu Bo to support compile
test and use devm_clk_get_enabled() helper to clean up code a bit
* tag 'imx-drivers-6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
bus: imx-weim: change to use devm_clk_get_enabled() helper
bus: imx-weim: support compile test
Link: https://lore.kernel.org/r/20240904143439.211552-1-shawnguo2@yeah.net
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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soc/drivers
Reset controller updates for v6.12
Use get_device()/put_device() to keep reset controller devices alive
while their reset controls are acquired.
Enable support for the Amlogic T7 SoC reset controller.
Remove unused EyeQ reset bindings and add a reset controller driver
to be instantiated as auxiliary device by the EyeQ clock driver.
Fix OF node leaks in the k210 and berlin probe() error paths.
Add some simplifications and cleanup in the core, lcp18xx driver, and
uniphier bindings.
* tag 'reset-for-v6.12' of git://git.pengutronix.de/pza/linux:
reset: eyeq: add platform driver
Revert "dt-bindings: reset: mobileye,eyeq5-reset: add bindings"
reset: reset-meson: Add support for Amlogic T7 SoC reset controller
dt-bindings: reset: Add Amlogic T7 reset controller
reset: core: add get_device()/put_device on rcdev
reset: lpc18xx: simplify with devm_clk_get_enabled()
reset: lpc18xx: simplify with dev_err_probe()
reset: simplify locking with guard()
reset: k210: fix OF node leak in probe() error path
reset: berlin: fix OF node leak in probe() error path
dt-bindings: reset: socionext,uniphier-glue-reset: add top-level constraints
Link: https://lore.kernel.org/r/20240904103921.1479579-1-p.zabel@pengutronix.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into soc/drivers
Integrator fixes for the v6.12 kernel cycle, some of_node_put():s
were missing in the SoC drivers.
* tag 'integrator-v6.12' of https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
bus: integrator-lm: fix OF node leak in probe()
ARM: versatile: fix OF node leak in CPUs prepare
Link: https://lore.kernel.org/r/CACRpkdahXECZXWA5uv=SZtkzU0E++fQj7QWK8kYuH0-asLUPqg@mail.gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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ftrace_graph_ret_addr() takes an 'idx' integer pointer that is used to
optimize the stack unwinding process. arm64 currently passes `NULL` for
this parameter which stops it from utilizing these optimizations.
Further, the current code for ftrace_graph_ret_addr() will just return
the passed in return address if it is NULL which will break this usage.
Pass a valid integer pointer to ftrace_graph_ret_addr() similar to
x86_64's stack unwinder.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Fixes: 29c1c24a2707 ("function_graph: Fix up ftrace_graph_ret_addr()")
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240618162342.28275-1-puranjay@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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We have STAT_FILL_EMPTY test case in xskxceiver that tries to process
traffic with fill queue being empty which currently fails for zero copy
ice driver after it started to use xsk_buff_can_alloc() API. That is
because xsk_queue::queue_empty_descs is currently only increased from
alloc APIs and right now if driver sees that xsk_buff_pool will be
unable to provide the requested count of buffers, it bails out early,
skipping calls to xsk_buff_alloc{_batch}().
Mentioned statistic should be handled in xsk_buff_can_alloc() from the
very beginning, so let's add this logic now. Do it by open coding
xskq_cons_has_entries() and bumping queue_empty_descs in the middle when
fill queue currently has no entries.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20240904162808.249160-1-maciej.fijalkowski@intel.com
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Frank Sae says:
====================
Add driver for Motorcomm yt8821 2.5G ethernet phy
yt8521 and yt8531s as Gigabit transceiver use bit15:14(bit9 reserved
default 0) as phy speed mask, yt8821 as 2.5G transceiver uses bit9 bit15:14
as phy speed mask.
Be compatible to yt8821, reform phy speed mask and phy speed macro.
Based on update above, add yt8821 2.5G phy driver.
====================
Link: https://patch.msgid.link/20240901083526.163784-1-Frank.Sae@motor-comm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add a driver for the motorcomm yt8821 2.5G ethernet phy. Verified the
driver on BPI-R3(with MediaTek MT7986(Filogic 830) SoC) development board,
which is developed by Guangdong Bipai Technology Co., Ltd..
yt8821 2.5G ethernet phy works in AUTO_BX2500_SGMII or FORCE_BX2500
interface, supports 2.5G/1000M/100M/10M speeds, and wol(magic package).
Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
Reviewed-by: Sai Krishna <saikrishnag@marvell.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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yt8521 and yt8531s as Gigabit transceiver use bit15:14(bit9 reserved
default 0) as phy speed mask, yt8821 as 2.5G transceiver uses bit9 bit15:14
as phy speed mask.
Be compatible to yt8821, reform phy speed mask and phy speed macro.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2024-09-04-2
this is a pull request of 18 patches for net-next/master.
All 18 patches add support for CAN-FD IP core found on Rockchip
RK3568.
The first patch is co-developed by Elaine Zhang and me and adds DT
bindings documentation.
The remaining 17 patches are by me and add the driver in several
stages.
linux-can-next-for-6.12-20240904-2
* tag 'linux-can-next-for-6.12-20240904-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
can: rockchip_canfd: add support for CAN_CTRLMODE_BERR_REPORTING
can: rockchip_canfd: add support for CAN_CTRLMODE_LOOPBACK
can: rockchip_canfd: add hardware timestamping support
can: rockchip_canfd: enable full TX-FIFO depth of 2
can: rockchip_canfd: prepare to use full TX-FIFO depth
can: rockchip_canfd: add stats support for errata workarounds
can: rockchip_canfd: rkcanfd_get_berr_counter_corrected(): work around broken {RX,TX}ERRORCNT register
can: rockchip_canfd: implement workaround for erratum 12
can: rockchip_canfd: implement workaround for erratum 6
can: rockchip_canfd: add TX PATH
can: rockchip_canfd: rkcanfd_register_done(): add warning for erratum 5
can: rockchip_canfd: rkcanfd_handle_rx_int_one(): implement workaround for erratum 5: check for empty FIFO
can: rockchip_canfd: add notes about known issues
can: rockchip_canfd: add support for rk3568v3
can: rockchip_canfd: add quirk for broken CAN-FD support
can: rockchip_canfd: add quirks for errata workarounds
can: rockchip_canfd: add driver for Rockchip CAN-FD controller
dt-bindings: can: rockchip_canfd: add rockchip CAN-FD controller
====================
Link: https://patch.msgid.link/20240904130256.1965582-1-mkl@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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devm_clk_get_optional() and clk_prepare_enable() can be replaced by helper
function devm_clk_get_optional_enabled(). Let's simplify code with use of
devm_clk_get_optional_enabled() and avoid calling clk_disable_unprepare().
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240904092311.9544-5-zhangzekun11@huawei.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
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devm_clk_get_optional() and clk_prepare_enable() can be replaced by helper
function devm_clk_get_optional_enabled(). Let's simplify code with use of
devm_clk_get_optional_enabled() and avoid calling clk_disable_unprepare().
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240904092311.9544-4-zhangzekun11@huawei.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
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devm_clk_get() and clk_prepare_enable() can be replaced by helper
function devm_clk_get_enabled(). Let's use devm_clk_get_enabled() to
simplify code and avoid calling clk_disable_unprepare().
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240904092311.9544-3-zhangzekun11@huawei.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
|
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devm_clk_get() and clk_prepare_enable() can be replaced by helper
function devm_clk_get_enabled(). Let's use devm_clk_get_enabled() to
simplify code and avoid calling clk_disable_unprepare().
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240904092311.9544-2-zhangzekun11@huawei.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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We can first assess the flags, if it's unmergeable, there's no need
to calculate the size and align.
Signed-off-by: Xavier <xavier_qy@163.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
|
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register_pmu_pm_ops() is only called at init time, via
device_initcall(), so can be marked __init. The driver can't be built as
a module.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240821082101.877438-1-mpe@ellerman.id.au
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Since commit 868941b14441 ("fs: remove no_llseek"), no_llseek() is
simply defined to be NULL, and a NULL llseek means seeking is
unsupported.
So for statically defined file_operations, such as all these, there's no
need or benefit to set llseek = no_llseek.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240903111951.141376-1-mpe@ellerman.id.au
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The non-standard "fast endian switch" syscall was added in 2008[1],
but was never widely used. It was disabled by default in 2017[2], and
there's no evidence it's ever been used since.
Remove it entirely.
A normal endian switch syscall was added in 2015[3].
[1]: 745a14cc264b ("[POWERPC] Add fast little-endian switch system call")
[2]: 529d235a0e19 ("powerpc: Add a proper syscall for switching endianness")
[3]: 727f13616c45 ("powerpc: Disable the fast-endian switch syscall by default")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240823070830.1269033-1-mpe@ellerman.id.au
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Transparent hugepages (THP) are not supported when using the Hash Page
Table (HPT) MMU with 4K pages.
Currently a HPT-only 4K kernel still allows THP to be enabled, which
is misleading.
Add restrictions to the PPC_THP symbol so that if the kernel is
configured with 4K pages and only the HPT MMU (no Radix), then THP is
disabled.
Note that it's still possible to build a combined Radix/HPT kernel with 4K
pages, which does allow THP to be enabled at build time. As such the HPT
code still needs to provide some THP related symbols, to allow the build
to succeed, but those code paths are never run. See the stubs in
arch/powerpc/include/asm/book3s/64/hash-4k.h.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240823032911.1238471-2-mpe@ellerman.id.au
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Move the Kconfig symbols related to transparent hugepages (THP) under a
separate config symbol, separate from CONFIG_PPC_BOOK3S_64.
The new symbol is automatically enabled if CONFIG_PPC_BOOK3S_64 is
enabled, so there is no behaviour change, except for the existence of
the new PPC_THP symbol.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240823032911.1238471-1-mpe@ellerman.id.au
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The mmu_hash_ops are only assigned to during boot, so mark them
__ro_after_init to prevent any further modification.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240821080745.872151-1-mpe@ellerman.id.au
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This is an adaptation of commit f3a112c0c40d ("x86,rethook,kprobes:
Replace kretprobe with rethook on x86") to powerpc.
Rethook follows the existing kretprobe implementation, but separates
it from kprobes so that it can be used by fprobe (ftrace-based
function entry/exit probes). As such, this patch also enables fprobe
to work on powerpc. The only other change compared to the existing
kretprobe implementation is doing the return address fixup in
arch_rethook_fixup_return().
Reference to other archs:
commit b57c2f124098 ("riscv: add riscv rethook implementation")
commit 7b0a096436c2 ("LoongArch: Replace kretprobe with rethook")
Note:
=====
In future, rethook will be only for kretprobe, and kretprobe
will be replaced by fprobe.
https://lore.kernel.org/all/172000134410.63468.13742222887213469474.stgit@devnote2/
We will adapt the above implementation for powerpc once its upstream.
Until then, we can have this implementation of rethook to serve
current kretprobe usecases.
Reviewed-by: Naveen Rao <naveen@kernel.org>
Signed-off-by: Abhishek Dubey <adubey@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240830113131.7597-1-adubey@linux.ibm.com
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'struct kobj_type' is not modified. It is only used in kobject_init()
which takes a 'const struct kobj_type *ktype' parameter.
Constifying this structure moves some data to a read-only section,
so increase over all security.
On a x86_64, compiled with ppc64 defconfig:
Before:
======
text data bss dec hex filename
1885 368 16 2269 8dd arch/powerpc/platforms/pseries/vas-sysfs.o
After:
======
text data bss dec hex filename
1981 272 16 2269 8dd arch/powerpc/platforms/pseries/vas-sysfs.o
Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-3-huangxiaojia2@huawei.com
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'struct kobj_type' is not modified. It is only used in kobject_init()
which takes a 'const struct kobj_type *ktype' parameter.
Constifying this structure moves some data to a read-only section,
so increase over all security.
On a x86_64, compiled with ppc64 defconfig:
Before:
======
text data bss dec hex filename
3775 256 8 4039 fc7 arch/powerpc/platforms/powernv/opal-dump.o
2679 260 8 2947 b83 arch/powerpc/platforms/powernv/opal-elog.o
After:
======
text data bss dec hex filename
3823 208 8 4039 fc7 arch/powerpc/platforms/powernv/opal-dump.o
2727 212 8 2947 b83 arch/powerpc/platforms/powernv/opal-elog.o
Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-2-huangxiaojia2@huawei.com
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'struct kobj_type' is not modified. It is only used in
kobject_init_and_add()/kobject_init() which takes
a 'const struct kobj_type *ktype' parameter.
Constifying this structure moves some data to a read-only section,
so increase over all security.
On a x86_64, compiled with ppc64 defconfig:
Before:
======
text data bss dec hex filename
7145 606 0 7751 1e47 arch/powerpc/kernel/cacheinfo.o
3663 384 16 4063 fdf arch/powerpc/kernel/secvar-sysfs.o
After:
======
text data bss dec hex filename
7193 558 0 7751 1e47 arch/powerpc/kernel/cacheinfo.o
3663 384 16 4063 fdf arch/powerpc/kernel/secvar-sysfs.o
Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-1-huangxiaojia2@huawei.com
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The commit 783bf5d09f86 ("spi: spi-fsl-lpspi: limit PRESCALE bit in
TCR register") doesn't implement the prescaler maximum as intended.
The maximum allowed value for i.MX93 should be 1 and for i.MX7ULP
it should be 7. So this needs also a adjustment of the comparison
in the scldiv calculation.
Fixes: 783bf5d09f86 ("spi: spi-fsl-lpspi: limit PRESCALE bit in TCR register")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240905111537.90389-1-wahrenst@gmx.net
Signed-off-by: Mark Brown <broonie@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/dt
Amlogic ARM DT changes for v6.11:
- simple dt bindings check fix for gpio keys node name
* tag 'amlogic-arm-dt-for-v6.11' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
ARM: dts: amlogic: meson8b-ec100: align GPIO keys node name with bindings
Link: https://lore.kernel.org/r/220683c1-e250-4c55-bbe5-c36e89391c32@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Arm Primecell blocks have a functional clock and a bus clock. The
Toshiba TMPV7708 only defines the bus clock (apb_pclk). Add the
"uartclk" and "sspclk" clocks to the PL011 and PL022 nodes,
respectively.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240826183848.1290957-2-robh@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The period size represents the size of the DMA descriptor. To ensure all
DMA descriptors start from a well-aligned address, the period size must
be divided by (sample size * maxburst), not just by maxburst.
This adjustment allows for computing a higher maxburst value, thereby
increasing the performance of the DMA transfer.
Previously, snd_pcm_lib_period_bytes() returned 0 because the runtime HW
parameters are computed after the hw_params() callbacks are used.
To address this, we now use params_*() functions to compute the period
size accurately. This change optimizes the DMA transfer performance by
ensuring proper alignment and efficient use of maxburst values.
[andrei.simion@microchip.com: Reword commit message and commit title.
Add macros with values for maximum DMA chunk size allowed.
Add DMA_BURST_ALIGNED preprocessor function to check the alignment of the
DMA burst]
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Signed-off-by: Andrei Simion <andrei.simion@microchip.com>
Link: https://patch.msgid.link/20240905095633.113784-1-andrei.simion@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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- Add specific config to enable:
- MT8365 sound support
- MT6357 audio codec support
- Add the mt8365 directory and all drivers under it.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://patch.msgid.link/20240226-audio-i350-v8-2-e80a57d026ce@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add the support of MT6357 PMIC audio codec.
Signed-off-by: Nicolas Belin <nbelin@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://patch.msgid.link/20240226-audio-i350-v8-1-e80a57d026ce@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
