From: Gabriel Krisman Bertazi <kris...@linux.vnet.ibm.com> Date: Wed, 27 May 2015 13:51:43 -0300
> Subject: [PATCH] bnx2x: Alloc 4k fragment for each rx ring buffer element > > 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 <kris...@linux.vnet.ibm.com> > Acked-by: Yuval Mintz <yuval.mi...@qlogic.com> > Reviewed-by: Lino Sanfilippo <linosanfili...@gmx.de> I think I've waited long enough on this, applied to net-next, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
