There are two duplicate `-O binary` flags when objcopying from vmlinux
to Image/xipImage.
RISC-V set `-O binary` flag in both OBJCOPYFLAGS in the top-level riscv
Makefile and OBJCOPYFLAGS_* in the boot/Makefile, and the objcopy cmd
in Kbuild would join them together.
The `-O binary` flag is only needed for objcopying Image, so remove the
OBJCOPYFLAGS in the top-level riscv Makefile.
Fixes: c0fbcd9918 ("RISC-V: Build flat and compressed kernel images")
Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Link: https://lore.kernel.org/r/20230914091334.1458542-1-songshuaishuai@tinylab.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Fix the following DTBS check warnings:
arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dt: /: memory@48000000: 'device-type' does not match any of the regexes: 'pinctrl-[0-9]+'
from schema $id: http://devicetree.org/schemas/memory.yaml#
arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dtb: /: memory@48000000: 'device_type' is a required property
from schema $id: http://devicetree.org/schemas/memory.yaml#
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231010132701.1658737-7-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fei has reported that KASAN triggers during apply_alternatives() on
a 5-level paging machine:
BUG: KASAN: out-of-bounds in rcu_is_watching()
Read of size 4 at addr ff110003ee6419a0 by task swapper/0/0
...
__asan_load4()
rcu_is_watching()
trace_hardirqs_on()
text_poke_early()
apply_alternatives()
...
On machines with 5-level paging, cpu_feature_enabled(X86_FEATURE_LA57)
gets patched. It includes KASAN code, where KASAN_SHADOW_START depends on
__VIRTUAL_MASK_SHIFT, which is defined with cpu_feature_enabled().
KASAN gets confused when apply_alternatives() patches the
KASAN_SHADOW_START users. A test patch that makes KASAN_SHADOW_START
static, by replacing __VIRTUAL_MASK_SHIFT with 56, works around the issue.
Fix it for real by disabling KASAN while the kernel is patching alternatives.
[ mingo: updated the changelog ]
Fixes: 6657fca06e ("x86/mm: Allow to boot without LA57 if CONFIG_X86_5LEVEL=y")
Reported-by: Fei Yang <fei.yang@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231012100424.1456-1-kirill.shutemov@linux.intel.com
This simplifies the macro and makes it easy to add the new seqprop's
with 2 or more args.
Plus this way we do not lose the type info, the (void*) type cast is
no longer needed.
And the latter reveals the problem: a lot of seqcount_t helpers pass
the "const seqcount_t *s" argument to __seqprop_ptr(seqcount_t *s)
but (before this patch) "(void *)(s)" masked the problem.
So this patch changes __seqprop_ptr() and __seqprop_##lockname##_ptr()
to accept the "const LOCKNAME *s" argument. This is not nice either,
they need to drop the constness on return because these helpers are used
by both the readers and writers, but at least it is clear what's going on.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20231012143227.GA16143@redhat.com
1. Kill the "lockmember" argument. It is always s->lock plus
__seqprop_##lockname##_sequence() already uses s->lock and
ignores "lockmember".
2. Kill the "lock_acquire" argument. __seqprop_##lockname##_sequence()
can use the same "lockbase" prefix for _lock and _unlock.
Apart from line numbers, gcc -E outputs the same code.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20231012143158.GA16133@redhat.com
The comments introduced in <asm/msr-index.h> in the merge conflict fixup in:
8f4156d587 ("Merge branch 'x86/urgent' into perf/core, to resolve conflict")
... aren't right: AMD naming schemes are more complex than implied,
family 0x17 is Zen1 and 2, family 0x19 is spread around Zen 3 and 4.
So there's indeed four separate MSR namespaces for:
MSR_F17H_
MSR_F19H_
MSR_ZEN2_
MSR_ZEN4_
... and the namespaces cannot be merged.
Fix it up. No change in functionality.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/D99589F4-BC5D-430B-87B2-72C20370CF57@exactcode.com
Although vf_vport entry of struct mlx5e_stats is never updated, its
values are mistakenly copied to the caller structure in the VF
representor .ndo_get_stat_64 callback mlx5e_rep_get_stats(). Remove
redundant entry and use the updated one, rep_stats, instead.
Fixes: 64b68e3696 ("net/mlx5: Refactor and expand rep vport stat group")
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Amir Tzin <amirtz@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
In the cited commit, if the routing device is ovs internal port, the
out device is set to uplink, and packets go out after encapsulation.
If filter device is uplink, it can trigger the following syndrome:
mlx5_core 0000:08:00.0: mlx5_cmd_out_err:803:(pid 3966): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0xcdb051), err(-22)
Fix this issue by not offloading internal port if filter device is out
device. In this case, packets are not forwarded to the root table to
be processed, the termination table is used instead to forward them
from uplink to uplink.
Fixes: 100ad4e2d7 ("net/mlx5e: Offload internal port as encap route device")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Ariel Levkovich <lariel@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
When mlx5e_xdp_xmit is called without the XDP_XMIT_FLUSH set it is
possible that it leaves a mpwqe session open. That is ok during runtime:
the session will be closed on the next call to mlx5e_xdp_xmit. But
having a mpwqe session still open at XDP sq close time is problematic:
the pc counter is not updated before flushing the contents of the
xdpi_fifo. This results in leaking page fragments.
The fix is to always close the mpwqe session at the end of
mlx5e_xdp_xmit, regardless of the XDP_XMIT_FLUSH flag being set or not.
Fixes: 5e0d2eef77 ("net/mlx5e: XDP, Support Enhanced Multi-Packet TX WQE")
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
When a page allocation fails during refill in mlx5e_refill_rx_wqes, the
page will be released again on the next refill call. This triggers the
page_pool negative page fragment count warning below:
[ 338.326070] WARNING: CPU: 4 PID: 0 at include/net/page_pool/helpers.h:130 mlx5e_page_release_fragmented.isra.0+0x42/0x50 [mlx5_core]
...
[ 338.328993] RIP: 0010:mlx5e_page_release_fragmented.isra.0+0x42/0x50 [mlx5_core]
[ 338.329094] Call Trace:
[ 338.329097] <IRQ>
[ 338.329100] ? __warn+0x7d/0x120
[ 338.329105] ? mlx5e_page_release_fragmented.isra.0+0x42/0x50 [mlx5_core]
[ 338.329173] ? report_bug+0x155/0x180
[ 338.329179] ? handle_bug+0x3c/0x60
[ 338.329183] ? exc_invalid_op+0x13/0x60
[ 338.329187] ? asm_exc_invalid_op+0x16/0x20
[ 338.329192] ? mlx5e_page_release_fragmented.isra.0+0x42/0x50 [mlx5_core]
[ 338.329259] mlx5e_post_rx_wqes+0x210/0x5a0 [mlx5_core]
[ 338.329327] ? mlx5e_poll_rx_cq+0x88/0x6f0 [mlx5_core]
[ 338.329394] mlx5e_napi_poll+0x127/0x6b0 [mlx5_core]
[ 338.329461] __napi_poll+0x25/0x1a0
[ 338.329465] net_rx_action+0x28a/0x300
[ 338.329468] __do_softirq+0xcd/0x279
[ 338.329473] irq_exit_rcu+0x6a/0x90
[ 338.329477] common_interrupt+0x82/0xa0
[ 338.329482] </IRQ>
This patch fixes the legacy rq case by releasing all allocated fragments
and then setting the skip flag on all released fragments. It is
important to note that the number of released fragments will be higher
than the number of allocated fragments when an allocation error occurs.
Fixes: 3f93f82988 ("net/mlx5e: RX, Defer page release in legacy rq for better recycling")
Tested-by: Chris Mason <clm@fb.com>
Reported-by: Chris Mason <clm@fb.com>
Closes: https://lore.kernel.org/netdev/117FF31A-7BE0-4050-B2BB-E41F224FF72F@meta.com
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Currently, whenever fw issues a change ownership event, the PF that owns
the fw tracer drops its ownership directly and the other PFs try to pick
up the ownership via what MTRC register suggests.
In some cases, driver releases the ownership of the tracer and reacquires
it later on. Whenever the driver releases ownership of the tracer, fw
issues a change ownership event. This event can be delayed and come after
driver has reacquired ownership of the tracer. Thus the late event will
trigger the tracer owner PF to release the ownership again and lead to a
scenario where no PF is owning the tracer.
To prevent the scenario described above, when handling a change
ownership event, do not drop ownership of the tracer directly, instead
read the fw MTRC register to retrieve the up-to-date owner of the tracer
and set it accordingly in driver level.
Fixes: f53aaa31cc ("net/mlx5: FW tracer, implement tracer logic")
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
With current implementation in single FDB LAG mode all packets are
processed by eswitch 0 rules. As such, 'peer' FDB entries receive the
packets for rules of other eswitches and are responsible for updating the
main entry by sending SWITCHDEV_FDB_ADD_TO_BRIDGE notification from their
background update wq task. However, this introduces a race condition when
non-zero eswitch instance decides to delete a FDB entry, sends
SWITCHDEV_FDB_DEL_TO_BRIDGE notification, but another eswitch's update task
refreshes the same entry concurrently while its async delete work is still
pending on the workque. In such case another SWITCHDEV_FDB_ADD_TO_BRIDGE
event may be generated and entry will remain stuck in FDB marked as
'offloaded' since no more SWITCHDEV_FDB_DEL_TO_BRIDGE notifications are
sent for deleting the peer entries.
Fix the issue by synchronously marking deleted entries with
MLX5_ESW_BRIDGE_FLAG_DELETED flag and skipping them in background update
job.
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Currently, mlx5 is registering event handler for vport context change
event some time after arming the event. this can lead to missing an
event, which will result in wrong rules in the FDB.
Hence, register the event handler before arming the event.
This solution is valid since FW is sending vport context change event
only on vports which SW armed, and SW arming the vport when enabling
it, which is done after the FDB has been created.
Fixes: 6933a93795 ("net/mlx5: E-Switch, Use async events chain")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
The cited patch change mlx5 driver so that during probe DMA
operations were performed before pci_enable_device(), and during
teardown DMA operations were performed after pci_disable_device().
DMA operations require PCI to be enabled. Hence, The above leads to
the following oops in PPC systems[1].
On s390x systems, as reported by Niklas Schnelle, this is a problem
because mlx5_pci_init() is where the DMA and coherent mask is set but
mlx5_cmd_init() already does a dma_alloc_coherent(). Thus a DMA
allocation is done during probe before the correct mask is set. This
causes probe to fail initialization of the cmdif SW structs on s390x
after that is converted to the common dma-iommu code. This is because on
s390x DMA addresses below 4 GiB are reserved on current machines and
unlike the old s390x specific DMA API implementation common code
enforces DMA masks.
Fix it by performing the DMA operations during probe after
pci_enable_device() and after the dma mask is set,
and during teardown before pci_disable_device().
[1]
Oops: Kernel access of bad area, sig: 11 [#1]
LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries
Modules linked in: xt_MASQUERADE nf_conntrack_netlink
nfnetlink xfrm_user iptable_nat xt_addrtype xt_conntrack nf_nat
nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 netconsole rpcsec_gss_krb5
auth_rpcgss oid_registry overlay rpcrdma rdma_ucm ib_iser ib_umad
rdma_cm ib_ipoib iw_cm libiscsi scsi_transport_iscsi ib_cm ib_uverbs
ib_core mlx5_core(-) ptp pps_core fuse vmx_crypto crc32c_vpmsum [last
unloaded: mlx5_ib]
CPU: 1 PID: 8937 Comm: modprobe Not tainted 6.5.0-rc3_for_upstream_min_debug_2023_07_31_16_02 #1
Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries
NIP: c000000000423388 LR: c0000000001e733c CTR: c0000000001e4720
REGS: c0000000055636d0 TRAP: 0380 Not tainted (6.5.0-rc3_for_upstream_min_debug_2023_07_31_16_02)
MSR: 8000000000009033 CR: 24008884 XER: 20040000
CFAR: c0000000001e7338 IRQMASK: 0
NIP [c000000000423388] __free_pages+0x28/0x160
LR [c0000000001e733c] dma_direct_free+0xac/0x190
Call Trace:
[c000000005563970] [5deadbeef0000100] 0x5deadbeef0000100 (unreliable)
[c0000000055639b0] [c0000000003d46cc] kfree+0x7c/0x150
[c000000005563a40] [c0000000001e47c8] dma_free_attrs+0xa8/0x1a0
[c000000005563aa0] [c008000000d0064c] mlx5_cmd_cleanup+0xa4/0x100 [mlx5_core]
[c000000005563ad0] [c008000000cf629c] mlx5_mdev_uninit+0xf4/0x140 [mlx5_core]
[c000000005563b00] [c008000000cf6448] remove_one+0x160/0x1d0 [mlx5_core]
[c000000005563b40] [c000000000958540] pci_device_remove+0x60/0x110
[c000000005563b80] [c000000000a35e80] device_remove+0x70/0xd0
[c000000005563bb0] [c000000000a37a38] device_release_driver_internal+0x2a8/0x330
[c000000005563c00] [c000000000a37b8c] driver_detach+0x8c/0x160
[c000000005563c40] [c000000000a35350] bus_remove_driver+0x90/0x110
[c000000005563c80] [c000000000a38948] driver_unregister+0x48/0x90
[c000000005563cf0] [c000000000957e38] pci_unregister_driver+0x38/0x150
[c000000005563d40] [c008000000eb6140] mlx5_cleanup+0x38/0x90 [mlx5_core]
Fixes: 06cd555f73 ("net/mlx5: split mlx5_cmd_init() to probe and reload routines")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Add clock and reset support for the SDHI1 and SDHI2 blocks on the
RZ/G3S (R9A08G045) SoC.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231010132701.1658737-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Use the %x format specifier to print CLK_ON_R(). This makes debugging
easier as the value printed will be hexadecimal like in the hardware
manual. Along with it add "0x" in front of the printed value.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231010132701.1658737-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fix the following DTBS check warnings:
arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dtb: cache-controller-0: 'cache-level' is a required property
from schema $id: http://devicetree.org/schemas/cache.yaml#
arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dtb: cache-controller-0: 'cache-level' is a required property
from schema $id: http://devicetree.org/schemas/cache.yaml#
arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dtb: cache-controller-0: Unevaluated properties are not allowed ('cache-size', 'cache-unified' were unexpected)
from schema $id: http://devicetree.org/schemas/cache.yaml#
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231010132701.1658737-7-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
kernel-doc emits a warning:
include/uapi/drm/nouveau_drm.h:49: warning: Cannot understand * @NOUVEAU_GETPARAM_EXEC_PUSH_MAX
on line 49 - I thought it was a doc line
We don't have a way to document a macro value via kernel-doc, so
change the "/**" kernel-doc marker to a C comment and format the comment
more like a kernel-doc comment for consistency.
Fixes: d59e75eef5 ("drm/nouveau: exec: report max pushs through getparam")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Danilo Krummrich <dakr@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: Bragatheswaran Manickavel <bragathemanick0908@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231008140231.17921-1-rdunlap@infradead.org
- Drop some minor code causing warnings in the Lantiq driver.
- Fix out of bounds write in the Nuvoton driver.
- Fix lost IRQs with CONFIG_PM in the Starfive driver.
- Fix a locking issue in find_pinctrl().
- Revert a regressive Tegra debug patch.
- Fix the Renesas RZN1 pin muxing.
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Merge tag 'pinctrl-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some pin control fixes for v6.6 which have been stacking up in my
tree.
Dmitry's fix to some locking in the core is the most substantial, that
was a really neat fix.
The rest is the usual assorted spray of minor driver fixes.
- Drop some minor code causing warnings in the Lantiq driver
- Fix out of bounds write in the Nuvoton driver
- Fix lost IRQs with CONFIG_PM in the Starfive driver
- Fix a locking issue in find_pinctrl()
- Revert a regressive Tegra debug patch
- Fix the Renesas RZN1 pin muxing"
* tag 'pinctrl-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: renesas: rzn1: Enable missing PINMUX
Revert "pinctrl: tegra: Add support to display pin function"
pinctrl: avoid unsafe code pattern in find_pinctrl()
pinctrl: starfive: jh7110: Add system pm ops to save and restore context
pinctrl: starfive: jh7110: Fix failure to set irq after CONFIG_PM is enabled
pinctrl: nuvoton: wpcm450: fix out of bounds write
pinctrl: lantiq: Remove unsued declaration ltq_pinctrl_unregister()
Randy reported a randconfig build issue against linux-next:
WARNING: unmet direct dependencies detected for ERRATA_ANDES
Depends on [n]: RISCV_ALTERNATIVE [=n] && RISCV_SBI [=y]
Selected by [y]:
- ARCH_R9A07G043 [=y] && SOC_RENESAS [=y] && RISCV [=y] && NONPORTABLE [=y] && RISCV_SBI [=y]
../arch/riscv/errata/andes/errata.c:59:54: warning: 'struct alt_entry' declared inside parameter list will not be visible outside of this definition or declaration
59 | void __init_or_module andes_errata_patch_func(struct alt_entry *begin, struct alt_entry *end,
On RISC-V, alternatives are not usable in XIP kernels, which this
randconfig happened to select. Rather than add a check for whether
alternatives are available before selecting the ERRATA_ANDES config
option, rework the R9A07G043 Kconfig entry to depend on the
configuration options required to support its non-standard cache
coherency implementation.
Without these options enabled, the SoC is effectively non-functional to
begin with, so there's an extra benefit in preventing the creation of
non-functional kernels.
The "if RISCV_DMA_NONCOHERENT" can be dropped, as ERRATA_ANDES_CMO will
select it.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/all/09a6b0f0-76a1-45e3-ab52-329c47393d1d@infradead.org/
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231012-pouch-parkway-7d26c04b3300@spud
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Always allocate a new arm_smmu_bond in __arm_smmu_sva_bind and remove
the bond refcount since arm_smmu_bond can never be shared across calls
to __arm_smmu_sva_bind.
The iommu framework will not allocate multiple SVA domains for the same
(device/mm) pair, nor will it call set_dev_pasid for a device if a
domain is already attached on the given pasid. There's also a one-to-one
mapping between MM and PASID. __arm_smmu_sva_bind is therefore never
called with the same (device/mm) pair, and so there's no reason to try
and normalize allocations of the arm_smmu_bond struct for a (device/mm)
pair across set_dev_pasid.
Signed-off-by: Michael Shavit <mshavit@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230905194849.v1.2.Id3ab7cf665bcead097654937233a645722a4cce3@changeid
Signed-off-by: Will Deacon <will@kernel.org>
Pull MD changes from Song:
"1. Rewrite mddev_suspend(), by Yu Kuai;
2. Simplify md_seq_ops, by Yu Kuai;
3. Reduce unnecessary locking array_state_store(), by Mariusz Tkaczyk."
* tag 'md-next-20231012' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md: (23 commits)
md: rename __mddev_suspend/resume() back to mddev_suspend/resume()
md: remove old apis to suspend the array
md: suspend array in md_start_sync() if array need reconfiguration
md/raid5: replace suspend with quiesce() callback
md/md-linear: cleanup linear_add()
md: cleanup mddev_create/destroy_serial_pool()
md: use new apis to suspend array before mddev_create/destroy_serial_pool
md: use new apis to suspend array for ioctls involed array reconfiguration
md: use new apis to suspend array for adding/removing rdev from state_store()
md: use new apis to suspend array for sysfs apis
md/raid5: use new apis to suspend array
md/raid5-cache: use new apis to suspend array
md/md-bitmap: use new apis to suspend array for location_store()
md/dm-raid: use new apis to suspend array
md: add new helpers to suspend/resume and lock/unlock array
md: add new helpers to suspend/resume array
md: replace is_md_suspended() with 'mddev->suspended' in md_check_recovery()
md/raid5-cache: use READ_ONCE/WRITE_ONCE for 'conf->log'
md: use READ_ONCE/WRITE_ONCE for 'suspend_lo' and 'suspend_hi'
md/raid1: don't split discard io for write behind
...
Currently, the kfree() be used for pwq objects allocated with
kmem_cache_alloc() in alloc_and_link_pwqs(), this isn't wrong.
but usually, use "trace_kmem_cache_alloc/trace_kmem_cache_free"
to track memory allocation and free. this commit therefore use
kmem_cache_free() instead of kfree() in alloc_and_link_pwqs()
and also consistent with release of the pwq in rcu_free_pwq().
Signed-off-by: Zqiang <qiang.zhang1211@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Namhyung reported that bd27568117 ("perf: Rewrite core context handling")
regresses context switch overhead when perf-cgroup is in use together
with 'slow' PMUs like uncore.
Specifically, perf_cgroup_switch()'s perf_ctx_disable() /
ctx_sched_out() etc.. all iterate the full list of active PMUs for
that CPU, even if they don't have cgroup events.
Previously there was cgrp_cpuctx_list which linked the relevant PMUs
together, but that got lost in the rework. Instead of re-instruducing
a similar list, let the perf_event_pmu_context iteration skip those
that do not have cgroup events. This avoids growing multiple versions
of the perf_event_pmu_context iteration.
Measured performance (on a slightly different patch):
Before)
$ taskset -c 0 ./perf bench sched pipe -l 10000 -G AAA,BBB
# Running 'sched/pipe' benchmark:
# Executed 10000 pipe operations between two processes
Total time: 0.901 [sec]
90.128700 usecs/op
11095 ops/sec
After)
$ taskset -c 0 ./perf bench sched pipe -l 10000 -G AAA,BBB
# Running 'sched/pipe' benchmark:
# Executed 10000 pipe operations between two processes
Total time: 0.065 [sec]
6.560100 usecs/op
152436 ops/sec
Fixes: bd27568117 ("perf: Rewrite core context handling")
Reported-by: Namhyung Kim <namhyung@kernel.org>
Debugged-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20231009210425.GC6307@noisy.programming.kicks-ass.net
Since commit f0d9a5f175 ("cgroup: make css_set_rwsem a spinlock
and rename it to css_set_lock"), css_set_rwsem has been replaced by
css_set_lock. That commit, however, missed the css_set_rwsem reference
in include/linux/cgroup-defs.h. Fix that by changing it to css_set_lock
as well.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Memory leaks were detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-20-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Memory leaks were detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-19-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
If opendir failed then closedir was passed NULL which is
erroneous. Caught by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-18-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
io__getline will free the line on error but it doesn't clear the out
argument. This may lead to the line being freed twice, like in
tools/perf/util/srcline.c as detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-17-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add missing free on an error path as detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-16-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
If a memory allocation fails then the strdup-ed string needs
freeing. Detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-15-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
On success path the sib_core and sib_thr values weren't being
freed. Detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-14-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
On other code paths browser->he_selection is NULL checked, add a
missing case reported by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-13-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
In the unlikely case of having a symbol without a mapping, avoid a
NULL dereference that clang-tidy warns about.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-11-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
pmu should be initialized to NULL before perf_pmus__scan loop. Fix and
shrink the scope of pmu at the same time. Issue detected by clang-tidy.
Fixes: 5752c20f37 ("perf mem: Scan all PMUs instead of just core ones")
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-10-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
jit_repipe_unwinding_info is called in a loop by jit_process_dump,
avoid leaking unwinding_data by free-ing before overwriting. Error
detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-9-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
clang-tidy was warning:
```
util/env.c:334:23: warning: Access to field 'nr_pmu_mappings' results in a dereference of a null pointer (loaded from variable 'env') [clang-analyzer-core.NullDereference]
env->nr_pmu_mappings = pmu_num;
```
As functions are called potentially when !env was true. This condition
could never be true as it would produce a segv, so remove the
unnecessary NULL tests and silence clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-8-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The buildid filename is first determined and then from this the
buildid read. If getting the filename fails then the buildid will be
used for a later memcmp uninitialized. Detected by clang-tidy.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-7-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Found by clang-tidy:
```
bench/uprobe.c:98:3: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc]
bench_uprobe_bpf__destroy(skel);
```
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-6-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add a -checks argument to allow the checks passed to the clang-tool to
be set on the command line.
Add a pass through -header-filter option.
Don't run analysis on non-C or CPP files.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-4-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Make the output more stable and deterministic.
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: llvm@lists.linux.dev
Cc: Ming Wang <wangming01@loongson.cn>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Rix <trix@redhat.com>
Cc: bpf@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Link: https://lore.kernel.org/r/20231009183920.200859-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
