Hi Marc, Simon, Martin and everyone, v6 is a rebase on v6.6. As there was a conflicting change merged for v6.6 which introduced irq polling, I had to modify the patches that touch the hrtimer. @Simon: I removed a couple of your reviewed-by tags because of the changes. @Martin: as the functionality changed, I did not apply your Tested-by tag as I may have introduced new bugs with the changes. The series implements many small and bigger throughput improvements and adds rx/tx coalescing at the end. Based on v6.6-rc2. Also available at https://gitlab.baylibre.com/msp8/linux/-/tree/topic/mcan-optimization/v6.6?ref_type=heads Best, Markus 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@xxxxxxxxxxxx v2 - https://lore.kernel.org/lkml/20230125195059.630377-1-msp@xxxxxxxxxxxx v3 - https://lore.kernel.org/lkml/20230315110546.2518305-1-msp@xxxxxxxxxxxx/ v4 - https://lore.kernel.org/lkml/20230621092350.3130866-1-msp@xxxxxxxxxxxx/ v5 - https://lore.kernel.org/lkml/20230718075708.958094-1-msp@xxxxxxxxxxxx Markus Schneider-Pargmann (14): can: m_can: Start/Cancel polling timer together with interrupts can: m_can: Move hrtimer init to m_can_class_register can: m_can: Write transmit header and data in one transaction can: m_can: Implement receive coalescing can: m_can: Implement transmit coalescing can: m_can: Add rx coalescing ethtool support can: m_can: Add tx coalescing ethtool support can: m_can: Use u32 for putidx can: m_can: Cache tx putidx can: m_can: Use the workqueue as queue can: m_can: Introduce a tx_fifo_in_flight counter can: m_can: Use tx_fifo_in_flight for netif_queue control can: m_can: Implement BQL can: m_can: Implement transmit submission coalescing drivers/net/can/m_can/m_can.c | 559 ++++++++++++++++++------- drivers/net/can/m_can/m_can.h | 34 +- drivers/net/can/m_can/m_can_platform.c | 4 - 3 files changed, 447 insertions(+), 150 deletions(-) base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70 -- 2.40.1
