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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4cace675d6
The driver allocates one page for each buffer on the rx ring, which is too much on architectures like ppc64 and can cause unexpected allocation failures when the system is under stress. Now, we keep a memory pool per queue, and if the architecture's PAGE_SIZE is greater than 4k, we fragment pages and assign each 4k segment to a ring element, which reduces the overall memory consumption on such architectures. This helps avoiding errors like the example below: [bnx2x_alloc_rx_sge:435(eth1)]Can't alloc sge [c00000037ffeb900] [d000000075eddeb4] .bnx2x_alloc_rx_sge+0x44/0x200 [bnx2x] [c00000037ffeb9b0] [d000000075ee0b34] .bnx2x_fill_frag_skb+0x1ac/0x460 [bnx2x] [c00000037ffebac0] [d000000075ee11f0] .bnx2x_tpa_stop+0x160/0x2e8 [bnx2x] [c00000037ffebb90] [d000000075ee1560] .bnx2x_rx_int+0x1e8/0xc30 [bnx2x] [c00000037ffebcd0] [d000000075ee2084] .bnx2x_poll+0xdc/0x3d8 [bnx2x] (unreliable) Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Acked-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Reviewed-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| bnx2x | ||
| genet | ||
| b44.c | ||
| b44.h | ||
| bcm63xx_enet.c | ||
| bcm63xx_enet.h | ||
| bcmsysport.c | ||
| bcmsysport.h | ||
| bgmac.c | ||
| bgmac.h | ||
| bnx2_fw.h | ||
| bnx2.c | ||
| bnx2.h | ||
| cnic_defs.h | ||
| cnic_if.h | ||
| cnic.c | ||
| cnic.h | ||
| Kconfig | ||
| Makefile | ||
| sb1250-mac.c | ||
| tg3.c | ||
| tg3.h | ||