mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-24 02:49:32 +07:00
ff0d91c3ee
Currently, the driver allocates up to 19 skb pointers for each TFD, of which we have 256 per queue. This means that for each TX queue, we allocate 19k/38k (an order 4 or 5 allocation on 32/64 bit respectively) just for each queue's "txb" array, which contains only the SKB pointers. However, due to the way we use these pointers only the first one can ever be assigned. When the driver was initially written, the idea was that it could be passed multiple SKBs for each TFD and attach all those to implement gather DMA. However, due to constraints in the userspace API and lack of TCP/IP level checksumming in the device, this is in fact not possible. And even if it were, the SKBs would be chained, and we wouldn't need to keep pointers to each anyway. Change this to only keep track of one SKB per TFD, and thereby reduce memory consumption to just one pointer per TFD, which is an order 0 allocation per transmit queue. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> |
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| .. | ||
| iwl3945-base.c | ||
| iwl-1000.c | ||
| iwl-3945-debugfs.c | ||
| iwl-3945-debugfs.h | ||
| iwl-3945-fh.h | ||
| iwl-3945-hw.h | ||
| iwl-3945-led.c | ||
| iwl-3945-led.h | ||
| iwl-3945-rs.c | ||
| iwl-3945.c | ||
| iwl-3945.h | ||
| iwl-4965-hw.h | ||
| iwl-4965.c | ||
| iwl-5000-hw.h | ||
| iwl-5000.c | ||
| iwl-6000-hw.h | ||
| iwl-6000.c | ||
| iwl-agn-debugfs.c | ||
| iwl-agn-debugfs.h | ||
| iwl-agn-hcmd.c | ||
| iwl-agn-hw.h | ||
| iwl-agn-ict.c | ||
| iwl-agn-led.c | ||
| iwl-agn-led.h | ||
| iwl-agn-lib.c | ||
| iwl-agn-rs.c | ||
| iwl-agn-rs.h | ||
| iwl-agn-tx.c | ||
| iwl-agn-ucode.c | ||
| iwl-agn.c | ||
| iwl-agn.h | ||
| iwl-calib.c | ||
| iwl-calib.h | ||
| iwl-commands.h | ||
| iwl-core.c | ||
| iwl-core.h | ||
| iwl-csr.h | ||
| iwl-debug.h | ||
| iwl-debugfs.c | ||
| iwl-dev.h | ||
| iwl-devtrace.c | ||
| iwl-devtrace.h | ||
| iwl-eeprom.c | ||
| iwl-eeprom.h | ||
| iwl-fh.h | ||
| iwl-hcmd.c | ||
| iwl-helpers.h | ||
| iwl-io.h | ||
| iwl-led.c | ||
| iwl-led.h | ||
| iwl-power.c | ||
| iwl-power.h | ||
| iwl-prph.h | ||
| iwl-rx.c | ||
| iwl-scan.c | ||
| iwl-spectrum.h | ||
| iwl-sta.c | ||
| iwl-sta.h | ||
| iwl-tx.c | ||
| Kconfig | ||
| Makefile | ||