Eric Lee / smarc-fsl-linux-kernel

15 Jan, 2012

1 commit

  • c49c41a41   Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security ... Browse Code »

    * 'for-linus' of git://selinuxproject.org/~jmorris/linux-security:
    capabilities: remove __cap_full_set definition
    security: remove the security_netlink_recv hook as it is equivalent to capable()
    ptrace: do not audit capability check when outputing /proc/pid/stat
    capabilities: remove task_ns_* functions
    capabitlies: ns_capable can use the cap helpers rather than lsm call
    capabilities: style only - move capable below ns_capable
    capabilites: introduce new has_ns_capabilities_noaudit
    capabilities: call has_ns_capability from has_capability
    capabilities: remove all _real_ interfaces
    capabilities: introduce security_capable_noaudit
    capabilities: reverse arguments to security_capable
    capabilities: remove the task from capable LSM hook entirely
    selinux: sparse fix: fix several warnings in the security server cod
    selinux: sparse fix: fix warnings in netlink code
    selinux: sparse fix: eliminate warnings for selinuxfs
    selinux: sparse fix: declare selinux_disable() in security.h
    selinux: sparse fix: move selinux_complete_init
    selinux: sparse fix: make selinux_secmark_refcount static
    SELinux: Fix RCU deref check warning in sel_netport_insert()

    Manually fix up a semantic mis-merge wrt security_netlink_recv():

    - the interface was removed in commit fd7784615248 ("security: remove
    the security_netlink_recv hook as it is equivalent to capable()")

    - a new user of it appeared in commit a38f7907b926 ("crypto: Add
    userspace configuration API")

    causing no automatic merge conflict, but Eric Paris pointed out the
    issue.

    Linus Torvalds
     

13 Jan, 2012

1 commit

  • cf778b00e   net: reintroduce missing rcu_assign_pointer() calls ... Browse Code »

    commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to
    RCU_INIT_POINTER) did a lot of incorrect changes, since it did a
    complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x,
    y).

    We miss needed barriers, even on x86, when y is not NULL.

    Signed-off-by: Eric Dumazet
    CC: Stephen Hemminger
    CC: Paul E. McKenney
    Signed-off-by: David S. Miller

    Eric Dumazet
     

06 Jan, 2012

1 commit

29 Dec, 2011

1 commit

06 Dec, 2011

1 commit

03 Dec, 2011

1 commit

27 Nov, 2011

4 commits

14 Nov, 2011

1 commit

  • 8b5c171bb   neigh: new unresolved queue limits ... Browse Code »

    Le mercredi 09 novembre 2011 à 16:21 -0500, David Miller a écrit :
    > From: David Miller
    > Date: Wed, 09 Nov 2011 16:16:44 -0500 (EST)
    >
    > > From: Eric Dumazet
    > > Date: Wed, 09 Nov 2011 12:14:09 +0100
    > >
    > >> unres_qlen is the number of frames we are able to queue per unresolved
    > >> neighbour. Its default value (3) was never changed and is responsible
    > >> for strange drops, especially if IP fragments are used, or multiple
    > >> sessions start in parallel. Even a single tcp flow can hit this limit.
    > > ...
    > >
    > > Ok, I've applied this, let's see what happens :-)
    >
    > Early answer, build fails.
    >
    > Please test build this patch with DECNET enabled and resubmit. The
    > decnet neigh layer still refers to the removed ->queue_len member.
    >
    > Thanks.

    Ouch, this was fixed on one machine yesterday, but not the other one I
    used this morning, sorry.

    [PATCH V5 net-next] neigh: new unresolved queue limits

    unres_qlen is the number of frames we are able to queue per unresolved
    neighbour. Its default value (3) was never changed and is responsible
    for strange drops, especially if IP fragments are used, or multiple
    sessions start in parallel. Even a single tcp flow can hit this limit.

    $ arp -d 192.168.20.108 ; ping -c 2 -s 8000 192.168.20.108
    PING 192.168.20.108 (192.168.20.108) 8000(8028) bytes of data.
    8008 bytes from 192.168.20.108: icmp_seq=2 ttl=64 time=0.322 ms

    Signed-off-by: David S. Miller

    Eric Dumazet
     

01 Nov, 2011

1 commit

02 Aug, 2011

1 commit

  • a9b3cd7f3   rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER ... Browse Code »

    When assigning a NULL value to an RCU protected pointer, no barrier
    is needed. The rcu_assign_pointer, used to handle that but will soon
    change to not handle the special case.

    Convert all rcu_assign_pointer of NULL value.

    //smpl
    @@ expression P; @@

    - rcu_assign_pointer(P, NULL)
    + RCU_INIT_POINTER(P, NULL)

    //

    Signed-off-by: Stephen Hemminger
    Acked-by: Paul E. McKenney
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

27 Jul, 2011

1 commit

  • 60063497a   atomic: use <linux/atomic.h> ... Browse Code »

    This allows us to move duplicated code in
    (atomic_inc_not_zero() for now) to

    Signed-off-by: Arun Sharma
    Reviewed-by: Eric Dumazet
    Cc: Ingo Molnar
    Cc: David Miller
    Cc: Eric Dumazet
    Acked-by: Mike Frysinger
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arun Sharma
     

18 Jul, 2011

3 commits

17 Jul, 2011

2 commits

02 Jul, 2011

1 commit

  • 06f8fe11b   decnet: Reduce switch/case indent ... Browse Code »

    Make the case labels the same indent as the switch.

    git diff -w shows differences for line wrapping.
    (fit multiple lines to 80 columns, join where possible)

    Signed-off-by: Joe Perches
    Signed-off-by: David S. Miller

    Joe Perches
     

17 Jun, 2011

1 commit

  • ea1107338   net: Remove casts of void * ... Browse Code »

    Unnecessary casts of void * clutter the code.

    These are the remainder casts after several specific
    patches to remove netdev_priv and dev_priv.

    Done via coccinelle script:

    $ cat cast_void_pointer.cocci
    @@
    type T;
    T *pt;
    void *pv;
    @@

    - pt = (T *)pv;
    + pt = pv;

    Signed-off-by: Joe Perches
    Acked-by: Paul Moore
    Signed-off-by: David S. Miller

    Joe Perches
     

10 Jun, 2011

1 commit

  • c7ac8679b   rtnetlink: Compute and store minimum ifinfo dump size ... Browse Code »

    The message size allocated for rtnl ifinfo dumps was limited to
    a single page. This is not enough for additional interface info
    available with devices that support SR-IOV and caused a bug in
    which VF info would not be displayed if more than approximately
    40 VFs were created per interface.

    Implement a new function pointer for the rtnl_register service that will
    calculate the amount of data required for the ifinfo dump and allocate
    enough data to satisfy the request.

    Signed-off-by: Greg Rose
    Signed-off-by: Jeff Kirsher

    Greg Rose
     

21 May, 2011

1 commit

  • 06f4e926d   Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits)
    macvlan: fix panic if lowerdev in a bond
    tg3: Add braces around 5906 workaround.
    tg3: Fix NETIF_F_LOOPBACK error
    macvlan: remove one synchronize_rcu() call
    networking: NET_CLS_ROUTE4 depends on INET
    irda: Fix error propagation in ircomm_lmp_connect_response()
    irda: Kill set but unused variable 'bytes' in irlan_check_command_param()
    irda: Kill set but unused variable 'clen' in ircomm_connect_indication()
    rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport()
    be2net: Kill set but unused variable 'req' in lancer_fw_download()
    irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication()
    atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined.
    rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer().
    rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler()
    rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection()
    rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window()
    pkt_sched: Kill set but unused variable 'protocol' in tc_classify()
    isdn: capi: Use pr_debug() instead of ifdefs.
    tg3: Update version to 3.119
    tg3: Apply rx_discards fix to 5719/5720
    ...

    Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c
    as per Davem.

    Linus Torvalds
     

08 May, 2011

1 commit

03 May, 2011

1 commit

  • e67f88dd1   net: dont hold rtnl mutex during netlink dump callbacks ... Browse Code »

    Four years ago, Patrick made a change to hold rtnl mutex during netlink
    dump callbacks.

    I believe it was a wrong move. This slows down concurrent dumps, making
    good old /proc/net/ files faster than rtnetlink in some situations.

    This occurred to me because one "ip link show dev ..." was _very_ slow
    on a workload adding/removing network devices in background.

    All dump callbacks are able to use RCU locking now, so this patch does
    roughly a revert of commits :

    1c2d670f366 : [RTNETLINK]: Hold rtnl_mutex during netlink dump callbacks
    6313c1e0992 : [RTNETLINK]: Remove unnecessary locking in dump callbacks

    This let writers fight for rtnl mutex and readers going full speed.

    It also takes care of phonet : phonet_route_get() is now called from rcu
    read section. I renamed it to phonet_route_get_rcu()

    Signed-off-by: Eric Dumazet
    Cc: Patrick McHardy
    Cc: Remi Denis-Courmont
    Acked-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Eric Dumazet
     

29 Apr, 2011

2 commits

18 Apr, 2011

1 commit

  • a01c1335a   decnet: Don't leak entries when rebuilding zone. ... Browse Code »

    As noticed by Ben Hutchings, when we move entries from
    one table to another we leak all except the first entry.

    Put back the "next" variable removed by commit
    9bf9055eb716f85372c41b3fbc51f90bc7653740 ("decnet: Fix set-but-unused
    variable.") and use it properly.

    Reported-by: Ben Hutchings
    Signed-off-by: David S. Miller

    David S. Miller
     

17 Apr, 2011

1 commit

13 Mar, 2011

2 commits

03 Mar, 2011

1 commit

02 Mar, 2011

1 commit

18 Feb, 2011

1 commit

27 Jan, 2011

1 commit

  • 62fa8a846   net: Implement read-only protection and COW'ing of metrics. ... Browse Code »

    Routing metrics are now copy-on-write.

    Initially a route entry points it's metrics at a read-only location.
    If a routing table entry exists, it will point there. Else it will
    point at the all zero metric place-holder called 'dst_default_metrics'.

    The writeability state of the metrics is stored in the low bits of the
    metrics pointer, we have two bits left to spare if we want to store
    more states.

    For the initial implementation, COW is implemented simply via kmalloc.
    However future enhancements will change this to place the writable
    metrics somewhere else, in order to increase sharing. Very likely
    this "somewhere else" will be the inetpeer cache.

    Note also that this means that metrics updates may transiently fail
    if we cannot COW the metrics successfully.

    But even by itself, this patch should decrease memory usage and
    increase cache locality especially for routing workloads. In those
    cases the read-only metric copies stay in place and never get written
    to.

    TCP workloads where metrics get updated, and those rare cases where
    PMTU triggers occur, will take a very slight performance hit. But
    that hit will be alleviated when the long-term writable metrics
    move to a more sharable location.

    Since the metrics storage went from a u32 array of RTAX_MAX entries to
    what is essentially a pointer, some retooling of the dst_entry layout
    was necessary.

    Most importantly, we need to preserve the alignment of the reference
    count so that it doesn't share cache lines with the read-mostly state,
    as per Eric Dumazet's alignment assertion checks.

    The only non-trivial bit here is the move of the 'flags' member into
    the writeable cacheline. This is OK since we are always accessing the
    flags around the same moment when we made a modification to the
    reference count.

    Signed-off-by: David S. Miller

    David S. Miller
     

20 Jan, 2011

1 commit

  • 441c793a5   net: cleanup unused macros in net directory ... Browse Code »

    Clean up some unused macros in net/*.
    1. be left for code change. e.g. PGV_FROM_VMALLOC, PGV_FROM_VMALLOC, KMEM_SAFETYZONE.
    2. never be used since introduced to kernel.
    e.g. P9_RDMA_MAX_SGE, UTIL_CTRL_PKT_SIZE.

    Signed-off-by: Shan Wei
    Acked-by: Sjur Braendeland
    Signed-off-by: David S. Miller

    Shan Wei
     

14 Jan, 2011

1 commit

  • 008d23e48   Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial ... Browse Code »

    * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
    Documentation/trace/events.txt: Remove obsolete sched_signal_send.
    writeback: fix global_dirty_limits comment runtime -> real-time
    ppc: fix comment typo singal -> signal
    drivers: fix comment typo diable -> disable.
    m68k: fix comment typo diable -> disable.
    wireless: comment typo fix diable -> disable.
    media: comment typo fix diable -> disable.
    remove doc for obsolete dynamic-printk kernel-parameter
    remove extraneous 'is' from Documentation/iostats.txt
    Fix spelling milisec -> ms in snd_ps3 module parameter description
    Fix spelling mistakes in comments
    Revert conflicting V4L changes
    i7core_edac: fix typos in comments
    mm/rmap.c: fix comment
    sound, ca0106: Fix assignment to 'channel'.
    hrtimer: fix a typo in comment
    init/Kconfig: fix typo
    anon_inodes: fix wrong function name in comment
    fix comment typos concerning "consistent"
    poll: fix a typo in comment
    ...

    Fix up trivial conflicts in:
    - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c)
    - fs/ext4/ext4.h

    Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.

    Linus Torvalds
     

23 Dec, 2010

1 commit

15 Dec, 2010

1 commit

14 Dec, 2010

1 commit

  • 0dbaee3b3   net: Abstract default ADVMSS behind an accessor. ... Browse Code »

    Make all RTAX_ADVMSS metric accesses go through a new helper function,
    dst_metric_advmss().

    Leave the actual default metric as "zero" in the real metric slot,
    and compute the actual default value dynamically via a new dst_ops
    AF specific callback.

    For stacked IPSEC routes, we use the advmss of the path which
    preserves existing behavior.

    Unlike ipv4/ipv6, DecNET ties the advmss to the mtu and thus updates
    advmss on pmtu updates. This inconsistency in advmss handling
    results in more raw metric accesses than I wish we ended up with.

    Signed-off-by: David S. Miller

    David S. Miller