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ce019faa70
With this patch, ndo_tx_timeout callback will be redirected to the TX
reporter in order to detect a TX timeout error and report it to the
devlink health. (The watchdog detects TX timeouts, but the driver verify
the issue still exists before launching any recover method).
In addition, recover from TX timeout in case of lost interrupt was added
to the TX reporter recover method. The TX timeout recover from lost
interrupt is not a new feature in the driver, this patch re-organize the
functionality and move it to the TX reporter recovery flow.
TX timeout example:
(with auto_recover set to false, if set to true, the manual recover and
diagnose sections are irrelevant)
$cat /sys/kernel/debug/tracing/trace
...
devlink_health_report: bus_name=pci dev_name=0000:00:09.0
driver_name=mlx5_core reporter_name=TX: TX timeout on queue: 0, SQ: 0xd8a, CQ:
0x406, SQ Cons: 0x2 SQ Prod: 0x2, usecs since last trans: 13972000
$devlink health diagnose pci/0000:00:09 reporter TX
SQ 0xd8a: HW state: 1, stopped: 1
SQ 0xe44: HW state: 1, stopped: 0
SQ 0xeb4: HW state: 1, stopped: 0
SQ 0xf1f: HW state: 1, stopped: 0
SQ 0xf80: HW state: 1, stopped: 0
SQ 0xfe5: HW state: 1, stopped: 0
$devlink health recover pci/0000:00:09 reporter TX
$devlink health show
pci/0000:00:09.0:
name TX state healthy #err 1 #recover 1 last_dump_ts N/A dump_available false
attributes:
grace_period 500 auto_recover false
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.