Eric Lee / smarc-fsl-linux-kernel

21 Apr, 2010

1 commit

  • aa3951451   net: sk_sleep() helper ... Browse Code »

    Define a new function to return the waitqueue of a "struct sock".

    static inline wait_queue_head_t *sk_sleep(struct sock *sk)
    {
    return sk->sk_sleep;
    }

    Change all read occurrences of sk_sleep by a call to this function.

    Needed for a future RCU conversion. sk_sleep wont be a field directly
    available.

    Signed-off-by: Eric Dumazet
    Signed-off-by: David S. Miller

    Eric Dumazet
     

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it 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: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

06 Mar, 2010

2 commits

30 Nov, 2009

1 commit

26 Nov, 2009

1 commit

  • 09ad9bc75   net: use net_eq to compare nets ... Browse Code »

    Generated with the following semantic patch

    @@
    struct net *n1;
    struct net *n2;
    @@
    - n1 == n2
    + net_eq(n1, n2)

    @@
    struct net *n1;
    struct net *n2;
    @@
    - n1 != n2
    + !net_eq(n1, n2)

    applied over {include,net,drivers/net}.

    Signed-off-by: Octavian Purdila
    Signed-off-by: David S. Miller

    Octavian Purdila
     

06 Nov, 2009

1 commit

  • 3f378b684   net: pass kern to net_proto_family create function ... Browse Code »

    The generic __sock_create function has a kern argument which allows the
    security system to make decisions based on if a socket is being created by
    the kernel or by userspace. This patch passes that flag to the
    net_proto_family specific create function, so it can do the same thing.

    Signed-off-by: Eric Paris
    Acked-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Eric Paris
     

01 Oct, 2009

1 commit

  • b7058842c   net: Make setsockopt() optlen be unsigned. ... Browse Code »

    This provides safety against negative optlen at the type
    level instead of depending upon (sometimes non-trivial)
    checks against this sprinkled all over the the place, in
    each and every implementation.

    Based upon work done by Arjan van de Ven and feedback
    from Linus Torvalds.

    Signed-off-by: David S. Miller

    David S. Miller
     

06 Jul, 2009

1 commit

15 Jul, 2008

3 commits

  • 2da59918e   tipc: Fix race condition that could cause accept() to fail ... Browse Code »

    This patch ensurs that accept() returns successfully even when
    the newly created socket is immediately disconnected by its peer.
    Previously, accept() would fail if it was unable to pass back
    the optional address info for the socket's peer before the
    socket became disconnected; TIPC now allows accept() to gather
    peer address information after disconnection. As a bonus, the
    revised code accesses the socket's port more efficiently, without
    the overhead incurred by a reference table lookup.

    Signed-off-by: Allan Stephens
    Signed-off-by: David S. Miller

    Allan Stephens
     
  • 8642bd9e0   tipc: Optimize pointer dereferencing when receiving stream data ... Browse Code »

    This patch eliminates an unnecessary pointer dereference when
    accessing a stream-based socket's receive queue.

    Signed-off-by: Allan Stephens
    Signed-off-by: David S. Miller

    Allan Stephens
     
  • 0ea522416   tipc: Remove unneeded parameter to tipc_createport_raw() ... Browse Code »

    This patch eliminates an unneeded parameter when creating a low-level
    TIPC port object. Instead of returning both the pointer to the port
    structure and the port's reference ID, it now returns only the pointer
    since the port structure contains the reference ID as one of its fields.

    Signed-off-by: Allan Stephens
    Signed-off-by: David S. Miller

    Allan Stephens
     

13 May, 2008

1 commit

  • 7ef43ebaa   tipc: Fix race condition when creating socket or native port ... Browse Code »

    This patch eliminates the (very remote) chance of a crash resulting
    from a partially initialized socket or native port unexpectedly
    receiving a message. Now, during the creation of a socket or native
    port, the underlying generic port's lock is not released until all
    initialization required to handle incoming messages has been done.

    Signed-off-by: Allan Stephens
    Signed-off-by: David S. Miller

    Allan Stephens
     

25 Apr, 2008

1 commit

15 Apr, 2008

7 commits

14 Apr, 2008

2 commits

27 Mar, 2008

1 commit

26 Mar, 2008

1 commit

07 Mar, 2008

1 commit

04 Mar, 2008

1 commit

08 Feb, 2008

1 commit

15 Dec, 2007

1 commit

  • 98eb5683f   [TIPC]: Fix semaphore handling. ... Browse Code »

    As noted by Kevin, tipc's release() does down_interruptible() and
    ignores the return value. So if signal_pending() we'll end up doing
    up() on a non-downed semaphore. Fix.

    Signed-off-by: Andrew Morton
    Signed-off-by: David S. Miller

    Andrew Morton
     

01 Nov, 2007

1 commit

  • 6257ff217   [NET]: Forget the zero_it argument of sk_alloc() ... Browse Code »

    Finally, the zero_it argument can be completely removed from
    the callers and from the function prototype.

    Besides, fix the checkpatch.pl warnings about using the
    assignments inside if-s.

    This patch is rather big, and it is a part of the previous one.
    I splitted it wishing to make the patches more readable. Hope
    this particular split helped.

    Signed-off-by: Pavel Emelyanov
    Signed-off-by: David S. Miller

    Pavel Emelyanov
     

11 Oct, 2007

1 commit

  • 1b8d7ae42   [NET]: Make socket creation namespace safe. ... Browse Code »

    This patch passes in the namespace a new socket should be created in
    and has the socket code do the appropriate reference counting. By
    virtue of this all socket create methods are touched. In addition
    the socket create methods are modified so that they will fail if
    you attempt to create a socket in a non-default network namespace.

    Failing if we attempt to create a socket outside of the default
    network namespace ensures that as we incrementally make the network stack
    network namespace aware we will not export functionality that someone
    has not audited and made certain is network namespace safe.
    Allowing us to partially enable network namespaces before all of the
    exotic protocols are supported.

    Any protocol layers I have missed will fail to compile because I now
    pass an extra parameter into the socket creation code.

    [ Integrated AF_IUCV build fixes from Andrew Morton... -DaveM ]

    Signed-off-by: Eric W. Biederman
    Signed-off-by: David S. Miller

    Eric W. Biederman
     

19 Jul, 2007

1 commit

11 Jul, 2007

2 commits

  • 05646c911   [TIPC]: Optimize stream send routine to avoid fragmentation ... Browse Code »

    This patch enhances TIPC's stream socket send routine so that
    it avoids transmitting data in chunks that require fragmentation
    and reassembly, thereby improving performance at both the
    sending and receiving ends of the connection.

    The "maximum packet size" hint that records MTU info allows
    the socket to decide how big a chunk it should send; in the
    event that the hint has become stale, fragmentation may still
    occur, but the data will be passed correctly and the hint will
    be updated in time for the following send. Note: The 66060 byte
    pseudo-MTU used for intra-node connections requires the send
    routine to perform an additional check to ensure it does not
    exceed TIPC"s limit of 66000 bytes of user data per chunk.

    Signed-off-by: Allan Stephens
    Signed-off-by: Jon Paul Maloy
    Signed-off-by: David S. Miller

    Allan Stephens
     
  • 5eee6a6dc   [TIPC]: Use standard socket "not implemented" routines ... Browse Code »

    This patch modifies TIPC's socket API to utilize existing
    generic routines to indicate unsupported operations, rather
    than adding similar TIPC-specific routines.

    Signed-off-by: Allan Stephens
    Signed-off-by: Jon Paul Maloy
    Signed-off-by: David S. Miller

    Allan Stephens
     

26 Apr, 2007

1 commit

  • 27a884dc3   [SK_BUFF]: Convert skb->tail to sk_buff_data_t ... Browse Code »

    So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
    on 64bit architectures, allowing us to combine the 4 bytes hole left by the
    layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
    64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
    :-)

    Many calculations that previously required that skb->{transport,network,
    mac}_header be first converted to a pointer now can be done directly, being
    meaningful as offsets or pointers.

    Signed-off-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Arnaldo Carvalho de Melo
     

11 Feb, 2007

1 commit

19 Oct, 2006

2 commits

11 Oct, 2006

1 commit

26 Jun, 2006

1 commit