gethostlatency: remove unused code

add a few funccount examples

snapcraft: add cpuunclaimed to snapcraft wrapper rules

Add missing helper prototypes

Fixes bio{snoop,top} on 4.10

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>

This commit fixes #888.  The 2 scripts run the same check, and now run
basically the same code to do it.

Tested on 4.10-rc2.

Add -fno-stack-protector to CFLAGS

When compiling ebpf programs on Alpine Linux the compiler throws the following
error:

LLVM ERROR: Cannot select: 0x56049b79dcb0: ch,glue = BPFISD::CALL 0x56049a93ad60, TargetExternalSymbol:i64'__stack_chk_fail'
  0x56049b391500: i64 = TargetExternalSymbol'__stack_chk_fail'
    In function: waker

Disabling the stack protector explicitly with '-fno-stack-protector'
fixes this error.

clang version 3.8.1 (tags/RELEASE_381/final)
Target: x86_64-alpine-linux-musl
Thread model: posix
InstalledDir: /usr/bin
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

add missing inclusion guards in bcc/proto.h

Fixes for LLVM 4.0 and python3

Avoid conflicting [no]inline attributes in function annotation. This was
probably always there but now 4.0 is treating this as an error.
Also, explicitly inline several functions in helpers.h.

Turn off unwind tables in the flags passed to clang. This was generating
calls to the elf relocator, which doesn't work for the BPF target. It is
unclear which change in LLVM 4.0 altered this behavior.

On python3, handle byte strings in the usual way for supporting
backwards compatibility.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

fix stupid typo in wrapper: ttysnop -> ttysnoop
Signed-off-by: Colin Ian King <colin.king@canonical.com>

Signed-off-by: Colin Ian King <colin.king@canonical.com>

Update [virtual_]bpf.h to 4.10

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>

Only the virtual_bpf.h should point to the installed kernel headers.
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

As is occassionally necessary, we need to update the compat header
files for new kernels. This picks up the bpf.h from 4.10rc1.

Fixes: #877
Signed-off-by: Brenden Blanco <bblanco@gmail.com>

Fix variable names in exceptions

add cpuunclaimed

Add snapcraft script to package up bcc as a snap

Don't close extern table when a module destructs

add bpf_obj_pin/bpf_obj_get to pin/get bpf objects

support macro in call arguments

trace: -L, -t, -T switches

USDT tools for higher level languages

The `-t` switch for specifying a thread id has been renamed
to `-L`. The `-T` switch specifies that a time column should
be provided, whereas the `-t` switch requests a relative
timestamp (from the beginning of the trace). This is more
consistent with other tools, and lets the user choose the
desired format for the time column, if any.