• Alexander Duyck's avatar
    igb: update code to better handle incrementing page count · bd4171a5
    Alexander Duyck authored
    Update the driver code so that we do bulk updates of the page reference
    count instead of just incrementing it by one reference at a time.  The
    advantage to doing this is that we cut down on atomic operations and
    this in turn should give us a slight improvement in cycles per packet.
    In addition if we eventually move this over to using build_skb the gains
    will be more noticeable.
    
    Link: http://lkml.kernel.org/r/20161110113616.76501.17072.stgit@ahduyck-blue-test.jf.intel.comSigned-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
    Acked-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
    Cc: "David S. Miller" <davem@davemloft.net>
    Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
    Cc: Chris Metcalf <cmetcalf@mellanox.com>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
    Cc: Helge Deller <deller@gmx.de>
    Cc: James Hogan <james.hogan@imgtec.com>
    Cc: Jonas Bonn <jonas@southpole.se>
    Cc: Keguang Zhang <keguang.zhang@gmail.com>
    Cc: Ley Foon Tan <lftan@altera.com>
    Cc: Mark Salter <msalter@redhat.com>
    Cc: Max Filippov <jcmvbkbc@gmail.com>
    Cc: Michael Ellerman <mpe@ellerman.id.au>
    Cc: Michal Simek <monstr@monstr.eu>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Rich Felker <dalias@libc.org>
    Cc: Richard Kuo <rkuo@codeaurora.org>
    Cc: Russell King <linux@armlinux.org.uk>
    Cc: Steven Miao <realmz6@gmail.com>
    Cc: Tobias Klauser <tklauser@distanz.ch>
    Cc: Vineet Gupta <vgupta@synopsys.com>
    Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    bd4171a5
igb_main.c 223 KB