1. 04 3月, 2011 1 次提交
  2. 17 9月, 2010 1 次提交
  3. 18 5月, 2010 1 次提交
  4. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  5. 12 10月, 2009 1 次提交
  6. 01 9月, 2009 1 次提交
  7. 06 7月, 2009 1 次提交
  8. 19 5月, 2009 1 次提交
    • E
      net: release dst entry in dev_hard_start_xmit() · 93f154b5
      Eric Dumazet 提交于
      One point of contention in high network loads is the dst_release() performed
      when a transmited skb is freed. This is because NIC tx completion calls
      dev_kree_skb() long after original call to dev_queue_xmit(skb).
      
      CPU cache is cold and the atomic op in dst_release() stalls. On SMP, this is
      quite visible if one CPU is 100% handling softirqs for a network device,
      since dst_clone() is done by other cpus, involving cache line ping pongs.
      
      It seems right place to release dst is in dev_hard_start_xmit(), for most
      devices but ones that are virtual, and some exceptions.
      
      David Miller suggested to define a new device flag, set in alloc_netdev_mq()
      (so that most devices set it at init time), and carefuly unset in devices
      which dont want a NULL skb->dst in their ndo_start_xmit().
      
      List of devices that must clear this flag is :
      
      - loopback device, because it calls netif_rx() and quoting Patrick :
          "ip_route_input() doesn't accept loopback addresses, so loopback packets
           already need to have a dst_entry attached."
      - appletalk/ipddp.c : needs skb->dst in its xmit function
      
      - And all devices that call again dev_queue_xmit() from their xmit function
      (as some classifiers need skb->dst) : bonding, vlan, macvlan, eql, ifb, hdlc_fr
      Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      93f154b5
  9. 09 4月, 2009 1 次提交
  10. 22 3月, 2009 1 次提交
  11. 22 11月, 2008 1 次提交
  12. 11 10月, 2007 3 次提交
    • J
      [NET] drivers/net: statistics cleanup #1 -- save memory and shrink code · 09f75cd7
      Jeff Garzik 提交于
      We now have struct net_device_stats embedded in struct net_device,
      and the default ->get_stats() hook does the obvious thing for us.
      
      Run through drivers/net/* and remove the driver-local storage of
      statistics, and driver-local ->get_stats() hook where applicable.
      
      This was just the low-hanging fruit in drivers/net; plenty more drivers
      remain to be updated.
      
      [ Resolved conflicts with napi_struct changes and fix sunqe build
        regression... -DaveM ]
      Signed-off-by: NJeff Garzik <jeff@garzik.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      09f75cd7
    • R
      [NET]: Nuke SET_MODULE_OWNER macro. · 10d024c1
      Ralf Baechle 提交于
      It's been a useless no-op for long enough in 2.6 so I figured it's time to
      remove it.  The number of people that could object because they're
      maintaining unified 2.4 and 2.6 drivers is probably rather small.
      
      [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]
      Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      Signed-off-by: NJeff Garzik <jeff@garzik.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      10d024c1
    • E
      [NET]: Make the device list and device lookups per namespace. · 881d966b
      Eric W. Biederman 提交于
      This patch makes most of the generic device layer network
      namespace safe.  This patch makes dev_base_head a
      network namespace variable, and then it picks up
      a few associated variables.  The functions:
      dev_getbyhwaddr
      dev_getfirsthwbytype
      dev_get_by_flags
      dev_get_by_name
      __dev_get_by_name
      dev_get_by_index
      __dev_get_by_index
      dev_ioctl
      dev_ethtool
      dev_load
      wireless_process_ioctl
      
      were modified to take a network namespace argument, and
      deal with it.
      
      vlan_ioctl_set and brioctl_set were modified so their
      hooks will receive a network namespace argument.
      
      So basically anthing in the core of the network stack that was
      affected to by the change of dev_base was modified to handle
      multiple network namespaces.  The rest of the network stack was
      simply modified to explicitly use &init_net the initial network
      namespace.  This can be fixed when those components of the network
      stack are modified to handle multiple network namespaces.
      
      For now the ifindex generator is left global.
      
      Fundametally ifindex numbers are per namespace, or else
      we will have corner case problems with migration when
      we get that far.
      
      At the same time there are assumptions in the network stack
      that the ifindex of a network device won't change.  Making
      the ifindex number global seems a good compromise until
      the network stack can cope with ifindex changes when
      you change namespaces, and the like.
      Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      881d966b
  13. 27 8月, 2007 1 次提交
  14. 14 9月, 2006 1 次提交
  15. 02 4月, 2006 1 次提交
  16. 22 7月, 2005 1 次提交
  17. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4
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