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Cosmin Ratiu
40efb0b7c7
E-Switch qos changes used the esw state_lock to serialize qos changes. With the introduction of cross-esw scheduling, multiple E-Switches might be involved in a qos operation, so prepare for that by switching locking to use a qos domain mutex. Add three helper functions: - esw_qos_lock - esw_qos_unlock - esw_assert_qos_lock_held Convert existing direct lock/unlock/lockdep calls to them. Also call esw_assert_qos_lock_held in a couple more places. mlx5_esw_qos_set_vport_rate expected to be called with the esw state_lock already held. Change it to instead acquire the qos lock directly. mlx5_eswitch_get_vport_config also accessed qos properties with the esw state lock. Introduce a new function mlx5_esw_qos_get_vport_rate to access those with the correct lock and change get_vport_config to use it. Finally, mlx5_vport_disable is called from the cleanup path with the esw state_lock held, so have it additionally acquire the qos lock to make sure there are no races. Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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 reStructuredText 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.