This fixes a TypeError in python 3, e.g, when executing uobjnew

Traceback (most recent call last):
  File "./uobjnew", line 134, in <module>
    bpf = BPF(text=program, usdt_contexts=[usdt])
  File "/usr/lib/python3.5/site-packages/bcc/__init__.py", line 224, in __init__
    text = usdt_text + text
TypeError: can't concat bytes to str

Use fast compression in test deb builds

Builds on GCE/ubuntu image were taking a long time due to combination of
disk speed/single core, and the default dpkg-deb compression level
(-z9). The dpkg-deb alone step was taking up to 5 minutes. Reduce to ~1
minute by forcing -z1. Unfortunately, it was not obvious how to capture
the option in debuild command, so this is a bit hacky.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Fixes for LLVM4+, python3

Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Signed-off-by: Brenden Blanco <bblanco@gmail.com>

In python3, output needs to be converted from ascii to str before the
"error_msg in str" test will succeed. This change should be backwards
compatible with python2.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Diff generated by clang-format
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Recent llvm changed the calling convention of setInvocation, breaking
3.9/4.0 compatibility. This new approach works for both.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Without marking as nounwind, recent llvm started generating .eh_frame
section, which is invalid for bpf target jit.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Use PID to resolve path of target libraries

trace: fix for python3

snapcraft: add in some missing tools from the snapcraft apps list

tplist: don't fail if no verbosity is supplied

update tools pic

Initialise the verbosity argument to 0, so that when no verbosity is
provided we don't fail with

$ tplist
kvmmmu:kvm_mmu_pagetable_walk
unorderable types: NoneType() > int()

xrange does not exist in py3.

Add in capable, deadlock-detector, llcstat, mountsnoop, profile,
runqlen, solisten, tplist, ucalls, uflow, ugc, uobjnew, ustat
and uthreads. Includes some re-ordering as well.
Signed-off-by: Colin Ian King <colin.king@canonical.com>

bcc: add support for lpm trie map type

Update installation instructions for FC24 and FC25

docs/kernel-versions: add reference to powerpc64 constant blinding support

... introduced in v4.9
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>

It turns out that for FC24 and FC25, there is a sufficiently recent
version of Clang in the official package sources, so we don't need
to fetch it from llvm.org using wget. Tested manually on a pair of
fresh FC24 and FC25 VMs, and confirmed that BCC builds and runs OK.

tools: add tool to detect potential deadlocks in running programs

switch bcc to use single instance per bcc process, fixed issue #940

instance dir is bcc_pid, fixed issue #940

docs: fix "BPF attached to sockets" commit link

docs: keep track of when prealloc of map elements were introduced

- Specify when `--binary` is needed (statically vs dynamically-linked
  binaries).

- Make `-h`, `_examples.txt`, and man page have concrete examples and
  be more user-friendly.

- Remove dependency on networkx. I did this by copying only the parts I needed
  from networkx, and adapting it to only use what I needed. These include:
  `DiGraph`, `strongly_connected_components`, `simple_cyles`

- Symbolize global and static mutexes. In order to do this, I subshell out to
  `subshell`. This isn't very efficient, but this only happens at the end of
  the program if a deadlock is found, so it's not too bad.

- `--verbose` mode to print graph statistics

- Make `--binary` flag optional. Not needed by default, However, this is needed
  on kernels without this recent kernel patch
  (https://lkml.org/lkml/2017/1/13/585, submitted 2 weeks ago): we can't attach
  a uprobe on a binary that has `:` in the path name. Instead, we can create a
  symlink without `:` in the path and pass that to the `--binary` argument
  instead.

Kernel v4.6-rc1~91^2~108^2~6
 commit 6c9059817432 ("bpf: pre-allocate hash map elements")

Introduced default preallocation of mem elements to solve a deadlock
(when kprobe'ing the memory allocator itself).

This change is also a performance enhancement.

The commit also introduced a map_flags on BPF_MAP_CREATE, which can disable
this preallocation again BPF_F_NO_PREALLOC.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>