sunvnet: NAPI enhancements.
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- v5 Latest4 patches 2 repliesIn review
Patches in v5 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | sunvnet: NAPIfy sunvnetdrivers/ drivers/ | +137 | 1 reply | |
| 2/4 | sunvnet: Use RCU to synchronize port usage with vnet_port_remove()drivers/ | +33 | 0 replies | |
| 3/4 | sparc64: Avoid irqsave/restore on vio.lock if in_softirq()arch/ | +5 | 1 reply | |
| 4/4 | sunvnet: Remove irqsave/irqrestore on vio.lockdrivers/ | +5 | 0 replies |
Reviews trailers per patch
2 of 4 patches have a Reviewed-by or Acked-by.
| Patch | Raghuram Kothakota | Dwight Engen | Bob Picco |
|---|---|---|---|
| 1/4 | A-b | A-b | |
| 2/4 | A-b | A-b | |
| 3/4 | |||
| 4/4 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 3 reviewers.
Cover letter [PATCHv5 net-next 0/4] sunvnet: NAPI enhancements.
This patchset converts the sunvnet driver to use the NAPI framework. Changes since v4 to (Patch 1):
vnet_event accumulates LDC_EVENT_* bits into rx_event. vnet_event_napi() unrolls send_events() logic to process all rx_event bits.
(Mail Subject of cover-letter changed, to keep it distinct from subject of patch 1)
Patch 1 in the series addresses the packet-receive path- all the vnet_event() processing is moved into NAPI context. This patch is dependant on the sparc-next commit:
"sparc64: Add vio_set_intr() to enable/disable Rx interrupts" (sparc commit id ca605b7dd740c8909408d67911d8ddd272c2b320)
Patch 2 uses RCU to fix race conditions between vnet_port_remove and paths that access/modify port-related state, such as vnet_start_xmit.
Patch 3 and Patch 4 in the series leverage from the NAPIfied Rx path, dropping superfluous usage of the irqsave/irqrestores on the vio.lock where possible.
Note: Patch 3 contains changes that target sparc-next, Patch 4 targets net-next.
Sowmini Varadhan (4):
NAPIfy sunvnet
Use RCU to synchronize port usage with vnet_port_remove() Avoid irqsave/restore on vio.lock if in_softirq() Remove irqsave/irqrestore on vio.lock
arch/sparc/kernel/viohs.c | 8 +- drivers/net/ethernet/sun/sunvnet.c | 265 +++++++++++++++++++++++-------------- drivers/net/ethernet/sun/sunvnet.h | 6 +- 3 files changed, 179 insertions(+), 100 deletions(-)
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1.8.4.2