07 Apr, 2016

1 commit

• 138d6153a   samples/bpf: Enable powerpc support ... Browse Code »

  Add the necessary definitions for building bpf samples on ppc.

  Since ppc doesn't store function return address on the stack, modify how
  PT_REGS_RET() and PT_REGS_FP() work.

  Also, introduce PT_REGS_IP() to access the instruction pointer.

  Cc: Alexei Starovoitov
  Cc: Daniel Borkmann
  Cc: David S. Miller
  Cc: Ananth N Mavinakayanahalli
  Cc: Michael Ellerman
  Signed-off-by: Naveen N. Rao
  Acked-by: Alexei Starovoitov
  Signed-off-by: David S. Miller

  Naveen N. Rao

  2016-04-07 04:01:29 +0800  

09 Mar, 2016

2 commits

• 7dcc42b68   samples/bpf: stress test bpf_get_stackid ... Browse Code »

  increase stress by also calling bpf_get_stackid() from
  various *spin* functions

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

  Alexei Starovoitov

  2016-03-09 12:22:02 +0800  
• 9d8b612d8   samples/bpf: add bpf map stress test ... Browse Code »

  this test calls bpf programs from different contexts:
  from inside of slub, from rcu, from pretty much everywhere,
  since it kprobes all spin_lock functions.
  It stresses the bpf hash and percpu map pre-allocation,
  deallocation logic and call_rcu mechanisms.
  User space part adding more stress by walking and deleting map elements.

  Note that due to nature bpf_load.c the earlier kprobe+bpf programs are
  already active while loader loads new programs, creates new kprobes and
  attaches them.

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

  Alexei Starovoitov

  2016-03-09 12:22:02 +0800