15 Apr, 2016

1 commit

• 02413cabd   bpf, samples: don't zero data when not needed ... Browse Code »

  Remove the zero initialization in the sample programs where appropriate.
  Note that this is an optimization which is now possible, old programs
  still doing the zero initialization are just fine as well. Also, make
  sure we don't have padding issues when we don't memset() the entire
  struct anymore.

  Signed-off-by: Daniel Borkmann
  Acked-by: Alexei Starovoitov
  Signed-off-by: David S. Miller

  Daniel Borkmann

  2016-04-15 09:40:42 +0800  

08 Apr, 2016

1 commit

• 3c9b16448   samples/bpf: tracepoint example ... Browse Code »

  modify offwaketime to work with sched/sched_switch tracepoint
  instead of kprobe into finish_task_switch

  Signed-off-by: Alexei Starovoitov
  Signed-off-by: David S. Miller

  Alexei Starovoitov

  2016-04-08 09:04:27 +0800  

20 Feb, 2016

1 commit

• a6ffe7b9d   samples/bpf: offwaketime example ... Browse Code »

  This is simplified version of Brendan Gregg's offwaketime:
  This program shows kernel stack traces and task names that were blocked and
  "off-CPU", along with the stack traces and task names for the threads that woke
  them, and the total elapsed time from when they blocked to when they were woken
  up. The combined stacks, task names, and total time is summarized in kernel
  context for efficiency.

  Example:
  $ sudo ./offwaketime | flamegraph.pl > demo.svg
  Open demo.svg in the browser as FlameGraph visualization.

  Signed-off-by: Alexei Starovoitov
  Signed-off-by: David S. Miller

  Alexei Starovoitov

  2016-02-20 13:21:44 +0800