2ea9b94c50
Markus Schneider-Pargmann <msp@baylibre.com> says: The series implements many small and bigger throughput improvements and adds rx/tx coalescing at the end. Changes in v7: - Rebased to v6.8-rc1 - Fixed NULL pointer dereference in m_can_clean() on am62 that happened when doing ip link up, ip link down, ip link up - Fixed a racecondition on am62 observed with high throughput tests. netdev_completed_queue() was called before netdev_sent_queue() as the interrupt was processed so fast. netdev_sent_queue() is now reported before the actual sent is done. - Fixed an initializing issue on am62 where active interrupts are getting lost between runs. Fixed by resetting cdev->active_interrupts in m_can_disable_all_interrupts() - Removed m_can_start_fast_xmit() because of a reordering of operations due to above mentioned race condition Changes in v6: - Rebased to v6.6-rc2 - Added two small changes for the newly integrated polling feature - Reuse the polling hrtimer for coalescing as the timer used for coalescing has a similar purpose as the one for polling. Also polling and coalescing will never be active at the same time. Changes in v5: - Add back parenthesis in m_can_set_coalesce(). This will make checkpatch unhappy but gcc happy. - Remove unused fifo_header variable in m_can_tx_handler(). - Rebased to v6.5-rc1 Changes in v4: - Create and use struct m_can_fifo_element in m_can_tx_handler - Fix memcpy_and_pad to copy the full buffer - Fixed a few checkpatch warnings - Change putidx to be unsigned - Print hard_xmit error only once when TX FIFO is full Changes in v3: - Remove parenthesis in error messages - Use memcpy_and_pad for buffer copy in 'can: m_can: Write transmit header and data in one transaction'. - Replace spin_lock with spin_lock_irqsave. I got a report of a interrupt that was calling start_xmit just after the netqueue was woken up before the locked region was exited. spin_lock_irqsave should fix this. I attached the full stack at the end of the mail if someone wants to know. - Rebased to v6.3-rc1. - Removed tcan4x5x patches from this series. Changes in v2: - Rebased on v6.2-rc5 - Fixed missing/broken accounting for non peripheral m_can devices. previous versions: v1 - https://lore.kernel.org/lkml/20221221152537.751564-1-msp@baylibre.com v2 - https://lore.kernel.org/lkml/20230125195059.630377-1-msp@baylibre.com v3 - https://lore.kernel.org/lkml/20230315110546.2518305-1-msp@baylibre.com v4 - https://lore.kernel.org/lkml/20230621092350.3130866-1-msp@baylibre.com v5 - https://lore.kernel.org/lkml/20230718075708.958094-1-msp@baylibre.com v6 - https://lore.kernel.org/lkml/20230929141304.3934380-1-msp@baylibre.com Link: https://lore.kernel.org/all/20240207093220.2681425-1-msp@baylibre.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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.