UFS specficication allows different VCC configurations for UFS devices,
for example:
(1). 2.70V - 3.60V (Activated by default in UFS core driver)
(2). 1.70V - 1.95V (Activated if "vcc-supply-1p8" is declared in
device tree)
(3). 2.40V - 2.70V (Supported since UFS 3.x)
With the introduction of UFS 3.x products, an issue is happening that UFS
driver will use wrong "min_uV-max_uV" values to configure the voltage of
VCC regulator on UFU 3.x products with the configuration (3) used.
To solve this issue, we simply remove pre-defined initial VCC voltage
values in UFS core driver with below reasons,
1. UFS specifications do not define how to detect the VCC configuration
supported by attached device.
2. Device tree already supports standard regulator properties.
Therefore VCC voltage shall be defined correctly in device tree, and shall
not changed by UFS driver. What UFS driver needs to do is simply enable or
disable the VCC regulator only.
Similar change is applied to VCCQ and VCCQ2 as well.
Note that we keep struct ufs_vreg unchanged. This allows vendors to
configure proper min_uV and max_uV of any regulators to make
regulator_set_voltage() works during regulator toggling flow in the
future. Without specific vendor configurations, min_uV and max_uV will be
NULL by default and UFS core driver will enable or disable the regulator
only without adjusting its voltage.
Link: https://lore.kernel.org/r/20201202091819.22363-1-stanley.chu@mediatek.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Can Guo <cang@codeaurora.org>
Acked-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit a389d86f7f ("ring-buffer: Have nested events still record running
time stamp") removed the only uses of rb_event_is_commit() in
rb_update_event() and rb_update_write_stamp().
Hence, since then, make CC=clang W=1 warns:
kernel/trace/ring_buffer.c:2763:1:
warning: unused function 'rb_event_is_commit' [-Wunused-function]
Remove this obsolete function.
Link: https://lkml.kernel.org/r/20201117053703.11275-1-lukas.bulwahn@gmail.com
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Use phy_initialization helper instead of direct invocation.
Link: https://lore.kernel.org/r/20201205120041.26869-5-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use phy_initialization helper instead of direct function invocation.
Link: https://lore.kernel.org/r/20201205120041.26869-4-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Introduce phy_initialization helper since this is the only one variant
function without helper.
Link: https://lore.kernel.org/r/20201205120041.26869-3-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since setup_regulators variant function is not used by any vendors, simply
remove it.
Link: https://lore.kernel.org/r/20201205120041.26869-2-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Introduce event_notify implementation on MediaTek UFS platform. A
vendor-specific tracepoint is added that can be used for debugging
purposes.
Link: https://lore.kernel.org/r/20201205115901.26815-5-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Introduce event_notify variant function to allow vendor to get notification
of important events and connect to any proprietary debugging facilities.
Link: https://lore.kernel.org/r/20201205115901.26815-4-stanley.chu@mediatek.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The UFS error history does not only have "history of errors" but also a
log of some other events which are not defined as errors.
This patch fixes the confused naming of related functions and changes the
approach for updating and printing history in preparation of next patch.
This patch does not change any functionality.
Link: https://lore.kernel.org/r/20201205115901.26815-3-stanley.chu@mediatek.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add error history for abort event in UFS Device W-LUN.
Use specified value as parameter of ufshcd_update_reg_hist() to identify
the aborted tag or LUNs.
Link: https://lore.kernel.org/r/20201205115901.26815-2-stanley.chu@mediatek.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
kfree(conn) is called inside put_device(&conn->dev) which could lead to
use-after-free. In addition, device_unregister() should be used here rather
than put_deviceO().
Link: https://lore.kernel.org/r/20201120074852.31658-1-miaoqinglang@huawei.com
Fixes: f3c893e3db ("scsi: iscsi: Fail session and connection on transport registration failure")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver did not return an error in the case where
pm8001_configure_phy_settings() failed.
Use rc to store the return value of pm8001_configure_phy_settings().
Link: https://lore.kernel.org/r/20201205115551.2079471-1-zhangqilong3@huawei.com
Fixes: 279094079a ("[SCSI] pm80xx: Phy settings support for motherboard controller.")
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add the missing destroy_workqueue() before return from __qedi_probe in the
error handling case when fails to create workqueue qedi->offload_thread.
Link: https://lore.kernel.org/r/20201109091518.55941-1-miaoqinglang@huawei.com
Fixes: ace7f46ba5 ("scsi: qedi: Add QLogic FastLinQ offload iSCSI driver framework.")
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The Freescale QorIQ clock controller is only present on Freescale E500MC
and Layerscape SoCs. Add platform dependencies to the CLK_QORIQ config
symbol, to avoid asking the user about it when configuring a kernel
without E500MC or Layerscape support.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20201110154750.3285411-1-geert+renesas@glider.be
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The Xtensa time code is not a clock provider, and just needs to call
of_clk_init().
Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Link: https://lore.kernel.org/r/20201110155117.3286247-1-geert+renesas@glider.be
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The SuperH/J2 DT platform code is not a clock provider, and just needs
to call of_clk_init().
Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20201110155029.3286090-1-geert+renesas@glider.be
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The R9A06G032 clock driver uses an array of packed structures to reduce
kernel size. However, this array contains pointers, which are no longer
aligned naturally, and cannot be relocated on PPC64. Hence when
compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g.
PowerPC allyesconfig), the following warnings are produced:
WARNING: 136 bad relocations
c000000000616be3 R_PPC64_UADDR64 .rodata+0x00000000000cf338
c000000000616bfe R_PPC64_UADDR64 .rodata+0x00000000000cf370
...
Fix this by dropping the __packed attribute from the r9a06g032_clkdesc
definition, trading a small size increase for portability.
This increases the 156-entry clock table by 1 byte per entry, but due to
the compiler generating more efficient code for unpacked accesses, the
net size increase is only 76 bytes (gcc 9.3.0 on arm32).
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 4c3d88526e ("clk: renesas: Renesas R9A06G032 clock driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20201130085743.1656317-1-geert+renesas@glider.be
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> # PowerPC allyesconfig build
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This issue can be reproduced by having a kernel config with
CONFIG_IMX_MBOX=m and CONFIG_MXC_CLK_SCU=m. It's caused by the Makefile
wanting to build clk-scu.o and clk-imx8qxp.o as different targets but
that doesn't work (e.g. MXC_CLK_SCU = y while CLK_IMX8QXP = n)
"obj-$(CONFIG_MXC_CLK_SCU) += clk-imx-scu.o clk-imx-lpcg-scu.o
clk-imx-scu-$(CONFIG_CLK_IMX8QXP) += clk-scu.o clk-imx8qxp.o"
Having MXC_CLK_SCU=y/m while CLK_IMX8QXP=n will cause a linker problem
like below:
LD [M] drivers/clk/imx/clk-imx-scu.o
arm-poky-linux-gnueabi-ld: no input files
Make MXC_CLK_SCU be un-selectable by users so it can only be selected by
the CLK_IMX8QXP option, ensuring the two symbols are built together.
Drop COMPILE_TEST too because this option isn't selectable anymore. We
can remove it from MXC_CLK_SCU because CLK_IMX8QXP selects MXC_CLK_SCU
which already has COMPILE_TEST.
Fixes: e0d0d4d86c ("clk: imx8qxp: Support building i.MX8QXP clock driver as module")
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Link: https://lore.kernel.org/r/20201130084624.21113-1-aisheng.dong@nxp.com
[sboyd@kernel.org: Rework commit text]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
If DT_SCHEMA_FILES is specified and contains more than one file paths,
'make dtbs_check' fails with the following message:
$ make dtbs_check DT_SCHEMA_FILES="path/to/schema1.yaml path/to/schema2.yaml"
SCHEMA Documentation/devicetree/bindings/processed-schema.json
Documentation/devicetree/bindings/Makefile:77: recipe for target 'Documentation/devicetree/bindings/processed-schema.json' failed
make[1]: *** [Documentation/devicetree/bindings/processed-schema.json] Error 255
make[1]: *** Deleting file 'Documentation/devicetree/bindings/processed-schema.json'
Makefile:1364: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2
The error code 255 is returned by 'dt-mk-schema' when invoked as
'dt-mk-schema -j -u @<tmp-file>', where '<tmp-file>' is a temporary
file that is generated to contain a list of SPACE delimited schema
file paths, as indicated via DT_SCHEMA_FILES.
However, it seems the file format has been recently changed in
'dt-mk-schema', which now expects each schema path to be provided on
a separate line:
$ dt-mk-schema --version
2020.12.dev4+g6de1c45
Therefore, let's change '<tmp-file>' content format from
path/to/schema1.yaml path/to/schema2.yaml ... path/to/schemaN.yaml
to
path/to/schema1.yaml
path/to/schema2.yaml
...
path/to/schemaN.yaml
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Link: https://lore.kernel.org/r/2519b8bde507ca6ccea9765ea197adaaa69a66d5.1605712328.git.cristian.ciocaltea@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
When compiling the selftests with the -std=gnu99 option the build can
fail with.
Following build error:
test_core.c: In function ‘test_cgcore_destroy’:
test_core.c:87:2: error: ‘for’ loop initial declarations are only
allowed in C99 mode
for (int i = 0; i < 10; i++) {
^
test_core.c:87:2: note: use option -std=c99 or -std=gnu99 to compile
Add -std=gnu99 to the clone3 selftest Makefile to fix this.
Signed-off-by: Xingxing Su <suxingxing@loongson.cn>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
a unneeded redundancy removed and making i2s actually work on the
rk3066.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCAAuFiEE7v+35S2Q1vLNA3Lx86Z5yZzRHYEFAl/NG9oQHGhlaWtvQHNu
dGVjaC5kZQAKCRDzpnnJnNEdgQ8WB/9MqzR0qPW3SYUF/ZbmB1hhHlQbaTiqimA0
UIynJoZ7Fl5b1yLH09ytAeLTk5prdqcZxLtXyWutjylHo/pGbYLVrpKqXuGJdNRu
uU6oDflIeQMF9IhOS2J2eFU7XHyvJJ87zECz13D0FoyDD88rTQpcMhFuL3HdkrA7
l5Fv6hX9PAWVZcforPiPNYVA4cH1nFrgshOK62Py1bPTJWkcXZqlflmfVLt3ikm6
uCjM03TJgADcoOyJkaZLJw6Rxvi6LWYDOHl5GHeo3iatEhWCju+v/xfnt41Aw6Zm
ld+Rw8B5dwfPguT78n2Wxvc5gFx2pItwReshZ9UPxggxsLdKWiPD
=M2Ua
-----END PGP SIGNATURE-----
Merge tag 'v5.11-rockchip-clk-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-rockchip
Pull Rockchip clk driver updates from Heiko Stuebner:
Added arch-dependencies for the newly added per-soc config symbols,
an unneeded redundancy removed and making i2s actually work on the
rk3066.
* tag 'v5.11-rockchip-clk-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: fix i2s gate bits on rk3066 and rk3188
clk: rockchip: add CLK_SET_RATE_PARENT to sclk for rk3066a i2s and uart clocks
clk: rockchip: Remove redundant null check before clk_prepare_enable
clk: rockchip: Add appropriate arch dependencies
* Add MIPI DSI clocks for axg and g12
* Make it possible to build controllers as modules
* Fix Video PLL clock dependency
-----BEGIN PGP SIGNATURE-----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=WQ4K
-----END PGP SIGNATURE-----
Merge tag 'clk-meson-v5.11-1' of https://github.com/BayLibre/clk-meson into clk-amlogic
Pull Amlogic clk driver updates from Jerome Brunet:
- Add MIPI DSI clocks for axg and g12
- Make it possible to build controllers as modules
- Fix Video PLL clock dependency
* tag 'clk-meson-v5.11-1' of https://github.com/BayLibre/clk-meson:
clk: meson: g12a: add MIPI DSI Host Pixel Clock
dt-bindings: clk: g12a-clkc: add DSI Pixel clock bindings
clk: meson: enable building as modules
clk: meson: Kconfig: fix dependency for G12A
clk: meson: axg: add MIPI DSI Host clock
clk: meson: axg: add Video Clocks
dt-bindings: clk: axg-clkc: add MIPI DSI Host clock binding
dt-bindings: clk: axg-clkc: add Video Clocks
clk: meson: g12: use devm variant to register notifiers
clk: add devm variant of clk_notifier_register
clk: meson: g12: drop use of __clk_lookup()
clk: add api to get clk consumer from clk_hw
clk: avoid devm_clk_release name clash
Except arch x86, the function rseq_offset_deref_addv is not defined.
The function test_membarrier_manager_thread call rseq_offset_deref_addv
produces a build error.
The RSEQ_ARCH_HAS_OFFSET_DEREF_ADD should contain all the code
for the MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ.
If the other Arch implements this feature,
defined RSEQ_ARCH_HAS_OFFSET_DEREF_ADD in the header file
to ensure that this feature is available.
Following build errors:
param_test.c: In function ‘test_membarrier_worker_thread’:
param_test.c:1164:10: warning: implicit declaration of function ‘rseq_offset_deref_addv’
ret = rseq_offset_deref_addv(&args->percpu_list_ptr,
^~~~~~~~~~~~~~~~~~~~~~
/tmp/ccMj9yHJ.o: In function `test_membarrier_worker_thread':
param_test.c:1164: undefined reference to `rseq_offset_deref_addv'
param_test.c:1164: undefined reference to `rseq_offset_deref_addv'
collect2: error: ld returned 1 exit status
make: *** [/selftests/rseq/param_test_benchmark] Error 1
Signed-off-by: Xingxing Su <suxingxing@loongson.cn>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The query_gid_table ioctl skips non IB/RoCE ports, which as a result
returns an empty gid table for devices such as EFA which have a GID table,
but are not IB/RoCE.
Fixes: c4b4d548fa ("RDMA/core: Introduce new GID table query API")
Link: https://lore.kernel.org/r/20201206153238.34878-1-galpress@amazon.com
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
There is a race condition in detaching as below:
A. detaching B. Write request
(1) writing back
(2) write back done, set bdev
state to clean.
(3) cached_dev_put() and
schedule_work(&dc->detach);
(4) write data [0 - 4K] directly
into backing and ack to user.
(5) power-failure...
When we restart this bcache device, this bdev is clean but not detached,
and read [0 - 4K], we will get unexpected old data from cache device.
To fix this problem, set the bdev state to none when we writeback done
in detaching, and then if power-failure happened as above, the data in
cache will not be used in next bcache device starting, it's detached, we
will read the correct data from backing derectly.
Signed-off-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Factor out the base vrate change code into a separate function
to fimplify the ioc_timer_fn().
No functional change.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Factor out the iocgs' state check into a separate function to
simplify the ioc_timer_fn().
No functional change.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We only use the hweight based usage ratio to calculate the new
hweight_inuse of the iocg to decide if this iocg can donate some
surplus vtime.
Thus move the usage ratio calculation to the correct place to
avoid unnecessary calculation for some vtime shortage iocgs.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Fixes: a54895fa05 ("block: remove the request_queue to argument request based tracepoints")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Update sysfs documentation file to include moved /proc leaves.
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lkml.kernel.org/r/20201128034227.120869-6-mike.travis@hpe.com
iser_initialize_task_headers() uses in_interrupt() to find out if it is
safe to acquire a mutex.
in_interrupt() is deprecated as it is ill defined and does not provide
what it suggests. Aside of that it covers only parts of the contexts in
which a mutex may not be acquired.
The following callchains exist:
iscsi_queuecommand() *locks* iscsi_session::frwd_lock
-> iscsi_prep_scsi_cmd_pdu()
-> session->tt->init_task() (iscsi_iser_task_init())
-> iser_initialize_task_headers()
-> iscsi_iser_task_xmit() (iscsi_transport::xmit_task)
-> iscsi_iser_task_xmit_unsol_data()
-> iser_send_data_out()
-> iser_initialize_task_headers()
iscsi_data_xmit() *locks* iscsi_session::frwd_lock
-> iscsi_prep_mgmt_task()
-> session->tt->init_task() (iscsi_iser_task_init())
-> iser_initialize_task_headers()
-> iscsi_prep_scsi_cmd_pdu()
-> session->tt->init_task() (iscsi_iser_task_init())
-> iser_initialize_task_headers()
__iscsi_conn_send_pdu() caller has iscsi_session::frwd_lock
-> iscsi_prep_mgmt_task()
-> session->tt->init_task() (iscsi_iser_task_init())
-> iser_initialize_task_headers()
-> session->tt->xmit_task() (
The only callchain that is close to be invoked in preemptible context:
iscsi_xmitworker() worker
-> iscsi_data_xmit()
-> iscsi_xmit_task()
-> conn->session->tt->xmit_task() (iscsi_iser_task_xmit()
In iscsi_iser_task_xmit() there is this check:
if (!task->sc)
return iscsi_iser_mtask_xmit(conn, task);
so it does end up in iser_initialize_task_headers() and
iser_initialize_task_headers() relies on iscsi_task::sc == NULL.
Remove conditional locking of iser_conn::state_mutex because there is no
call chain to do so. Remove the goto label and return early now that there
is no clean up needed.
Link: https://lore.kernel.org/r/20201204174256.62xfcvudndt7oufl@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Max Gurtovoy <maxg@nvidia.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
migrate_disable() is just a wrapper for preempt_disable() in
non-RT kernel. It is safe to replace it, and RT kernel will
benefit.
Note that it is introduced since Feb 2020.
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201205075946.497763-2-xiyou.wangcong@gmail.com
The per-cpu bpf_redirect_info is shared among all skb_do_redirect()
and BPF redirect helpers. Callers on RX path are all in BH context,
disabling preemption is not sufficient to prevent BH interruption.
In production, we observed strange packet drops because of the race
condition between LWT xmit and TC ingress, and we verified this issue
is fixed after we disable BH.
Although this bug was technically introduced from the beginning, that
is commit 3a0af8fd61 ("bpf: BPF for lightweight tunnel infrastructure"),
at that time call_rcu() had to be call_rcu_bh() to match the RCU context.
So this patch may not work well before RCU flavor consolidation has been
completed around v5.0.
Update the comments above the code too, as call_rcu() is now BH friendly.
Signed-off-by: Dongdong Wang <wangdongdong.6@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Link: https://lore.kernel.org/bpf/20201205075946.497763-1-xiyou.wangcong@gmail.com
Currently, DM MR registration flow doesn't set the mlx5_ib_dev pointer and
can cause a NULL pointer dereference if userspace dumps the MR via rdma
tool.
Assign the IB device together with the other fields and remove the
redundant reference of mlx5_ib_dev from mlx5_ib_mr.
Cc: stable@vger.kernel.org
Fixes: 6c29f57ea4 ("IB/mlx5: Device memory mr registration support")
Link: https://lore.kernel.org/r/20201203190807.127189-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
These flags will be returned to the userspace through ABI, so they should
be defined in hns-abi.h. Furthermore, there is no need to include
hns-abi.h in every source files, it just needs to be included in the
common header file.
Link: https://lore.kernel.org/r/1606872560-17823-1-git-send-email-liweihang@huawei.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
While creating qps, the driver adds one extra entry to the sq size passed
by the ULPs in order to avoid queue full condition. When ULPs creates QPs
with max_qp_wr reported, driver creates QP with 1 more than the max_wqes
supported by HW. Create QP fails in this case. To avoid this error, reduce
1 entry in max_qp_wqes and report it to the stack.
Link: https://lore.kernel.org/r/1606741986-16477-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Low level mlx5 updates required by both netdev and rdma trees:
net/mlx5: Treat host PF vport as other (non eswitch manager) vport
net/mlx5: Enable host PF HCA after eswitch is initialized
net/mlx5: Rename peer_pf to host_pf
net/mlx5: Make API mlx5_core_is_ecpf accept const pointer
net/mlx5: Export steering related functions
net/mlx5: Expose other function ifc bits
net/mlx5: Expose IP-in-IP TX and RX capability bits
net/mlx5: Update the hardware interface definition for vhca state
net/mlx5: Update the list of the PCI supported devices
net/mlx5: Avoid exposing driver internal command helpers
net/mlx5: Add ts_cqe_to_dest_cqn related bits
net/mlx5: Add misc4 to mlx5_ifc_fte_match_param_bits
net/mlx5: Check dr mask size against mlx5_match_param size
net/mlx5: Add sampler destination type
net/mlx5: Add sample offload hardware bits and structures
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEGhZs6bAKwk/OTgTpSD+KveBX+j4FAl/IOZcACgkQSD+KveBX
+j4J8wgAuxwflrYrbCWXV7LE08J7T7ZHRDE+jEbaZ0Zp9mOsYDDpcifpKwy2EVRf
RKcpMYh/GzAljmEpeWIAlMxmlpXhKWXTDruWCx73r1jvdXf/RU24/zQHa6BjeiDo
rMB8bgiW4a66+z4LcN/U6ahbVM5gScBNEt2sS1OIi9ZInngGVo9FgfhYMpERPNcH
3+mcHulCnGBNbbLwoTllOcgbxexn+xoByukg5Z0ddBJp007DMjzBIWDpDS0y2HaT
jGo1LYONgRc3zoGVmdeu9F+tSsWBIgsaiyGxKj1T/8sZUaNz2TKj9VOiYIj9BLff
cp6GRc88k7HWA4tImSHQiLbK6cx+yA==
=mjvI
-----END PGP SIGNATURE-----
Merge tag 'mlx5-next-2020-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Saeed Mahameed says:
====================
mlx5-next-2020-12-02
Low level mlx5 updates required by both netdev and rdma trees:
net/mlx5: Treat host PF vport as other (non eswitch manager) vport
net/mlx5: Enable host PF HCA after eswitch is initialized
net/mlx5: Rename peer_pf to host_pf
net/mlx5: Make API mlx5_core_is_ecpf accept const pointer
net/mlx5: Export steering related functions
net/mlx5: Expose other function ifc bits
net/mlx5: Expose IP-in-IP TX and RX capability bits
net/mlx5: Update the hardware interface definition for vhca state
net/mlx5: Update the list of the PCI supported devices
net/mlx5: Avoid exposing driver internal command helpers
net/mlx5: Add ts_cqe_to_dest_cqn related bits
net/mlx5: Add misc4 to mlx5_ifc_fte_match_param_bits
net/mlx5: Check dr mask size against mlx5_match_param size
net/mlx5: Add sampler destination type
net/mlx5: Add sample offload hardware bits and structures
====================
Link: https://lore.kernel.org/r/20201203011010.213440-1-saeedm@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
While writing an application that requires user stack trace option
to work in instances, I found that the instance option has a bug
that makes it a nop. The check for performing the user stack trace
in an instance, checks the top level options (not the instance options)
to determine if a user stack trace should be performed or not.
This is not only incorrect, but also confusing for users. It confused
me for a bit!
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX85BzBQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qv7XAQCzfq6DpHUv1gVaBkGytOszLW4IuEtd
/09jDPbVSG8T2QEA+e6fpBP1aIixgLN6+vFVl3wAK3SaIQeIA/blkbBNFQ0=
=o1Ew
-----END PGP SIGNATURE-----
Merge tag 'trace-v5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"Fix userstacktrace option for instances
While writing an application that requires user stack trace option to
work in instances, I found that the instance option has a bug that
makes it a nop. The check for performing the user stack trace in an
instance, checks the top level options (not the instance options) to
determine if a user stack trace should be performed or not.
This is not only incorrect, but also confusing for users. It confused
me for a bit!"
* tag 'trace-v5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix userstacktrace option for instances
According to the datasheet (Rev. 1.9) the RTL8211F requires at least
72ms "for internal circuits settling time" before accessing the PHY
egisters. On similar boards with the same PHY this fixes an issue where
Ethernet link would not come up when using ip link set down/up.
Fixes: 2cd2310fca ("arm64: dts: meson-g12b-ugoos-am6: add initial device-tree")
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/46298e66572784c44f873f1b71cc4ab3d8fc5aa6.1607363522.git.stefan@agner.ch
According to the datasheet (Rev. 1.9) the RTL8211F requires at least
72ms "for internal circuits settling time" before accessing the PHY
registers. On similar boards with the same PHY this fixes an issue where
Ethernet link would not come up when using ip link set down/up.
Fixes: ed5e8f6891 ("arm64: dts: meson: g12a: x96-max: fix the Ethernet PHY reset line")
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/12506964ca5d5f936579a280ad0a7e7f9a0a2d4c.1607363522.git.stefan@agner.ch
