Doug / smarc-fsl-linux-kernel

15 Jun, 2009

1 commit

22 May, 2009

1 commit

  • 4ea7e3869   dropmon: add ability to detect when hardware dropsrxpackets ... Browse Code »

    Patch to add the ability to detect drops in hardware interfaces via dropwatch.
    Adds a tracepoint to net_rx_action to signal everytime a napi instance is
    polled. The dropmon code then periodically checks to see if the rx_frames
    counter has changed, and if so, adds a drop notification to the netlink
    protocol, using the reserved all-0's vector to indicate the drop location was in
    hardware, rather than somewhere in the code.

    Signed-off-by: Neil Horman

    include/linux/net_dropmon.h | 8 ++
    include/trace/napi.h | 11 +++
    net/core/dev.c | 5 +
    net/core/drop_monitor.c | 124 ++++++++++++++++++++++++++++++++++++++++++--
    net/core/net-traces.c | 4 +
    net/core/netpoll.c | 2
    6 files changed, 149 insertions(+), 5 deletions(-)
    Signed-off-by: David S. Miller

    Neil Horman
     

15 Apr, 2009

2 commits

  • ad8d75fff   tracing/events: move trace point headers into include/trace/events ... Browse Code »

    Impact: clean up

    Create a sub directory in include/trace called events to keep the
    trace point headers in their own separate directory. Only headers that
    declare trace points should be defined in this directory.

    Cc: Peter Zijlstra
    Cc: Thomas Gleixner
    Cc: Neil Horman
    Cc: Zhao Lei
    Cc: Eduard - Gabriel Munteanu
    Cc: Pekka Enberg
    Signed-off-by: Steven Rostedt

    Steven Rostedt
     
  • a8d154b00   tracing: create automated trace defines ... Browse Code »

    This patch lowers the number of places a developer must modify to add
    new tracepoints. The current method to add a new tracepoint
    into an existing system is to write the trace point macro in the
    trace header with one of the macros TRACE_EVENT, TRACE_FORMAT or
    DECLARE_TRACE, then they must add the same named item into the C file
    with the macro DEFINE_TRACE(name) and then add the trace point.

    This change cuts out the needing to add the DEFINE_TRACE(name).
    Every file that uses the tracepoint must still include the trace/.h
    file, but the one C file must also add a define before the including
    of that file.

    #define CREATE_TRACE_POINTS
    #include

    This will cause the trace/mytrace.h file to also produce the C code
    necessary to implement the trace point.

    Note, if more than one trace/.h is used to create the C code
    it is best to list them all together.

    #define CREATE_TRACE_POINTS
    #include
    #include
    #include

    Thanks to Mathieu Desnoyers and Christoph Hellwig for coming up with
    the cleaner solution of the define above the includes over my first
    design to have the C code include a "special" header.

    This patch converts sched, irq and lockdep and skb to use this new
    method.

    Cc: Peter Zijlstra
    Cc: Thomas Gleixner
    Cc: Neil Horman
    Cc: Zhao Lei
    Cc: Eduard - Gabriel Munteanu
    Cc: Pekka Enberg
    Signed-off-by: Steven Rostedt

    Steven Rostedt
     

14 Mar, 2009

1 commit