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Joe Stringer b915ebe6d9 bpf, selftest: test global data/bss/rodata sections 
Add tests for libbpf relocation of static variable references
into the .data, .rodata and .bss sections of the ELF, also add
read-only test for .rodata. All passing:

  # ./test_progs
  [...]
  test_global_data:PASS:load program 0 nsec
  test_global_data:PASS:pass global data run 925 nsec
  test_global_data_number:PASS:relocate .bss reference 925 nsec
  test_global_data_number:PASS:relocate .data reference 925 nsec
  test_global_data_number:PASS:relocate .rodata reference 925 nsec
  test_global_data_number:PASS:relocate .bss reference 925 nsec
  test_global_data_number:PASS:relocate .data reference 925 nsec
  test_global_data_number:PASS:relocate .rodata reference 925 nsec
  test_global_data_number:PASS:relocate .bss reference 925 nsec
  test_global_data_number:PASS:relocate .bss reference 925 nsec
  test_global_data_number:PASS:relocate .rodata reference 925 nsec
  test_global_data_number:PASS:relocate .rodata reference 925 nsec
  test_global_data_number:PASS:relocate .rodata reference 925 nsec
  test_global_data_string:PASS:relocate .rodata reference 925 nsec
  test_global_data_string:PASS:relocate .data reference 925 nsec
  test_global_data_string:PASS:relocate .bss reference 925 nsec
  test_global_data_string:PASS:relocate .data reference 925 nsec
  test_global_data_string:PASS:relocate .bss reference 925 nsec
  test_global_data_struct:PASS:relocate .rodata reference 925 nsec
  test_global_data_struct:PASS:relocate .bss reference 925 nsec
  test_global_data_struct:PASS:relocate .rodata reference 925 nsec
  test_global_data_struct:PASS:relocate .data reference 925 nsec
  test_global_data_rdonly:PASS:test .rodata read-only map 925 nsec
  [...]
  Summary: 229 PASSED, 0 FAILED

Note map helper signatures have been changed to avoid warnings
when passing in const data.

Joint work with Daniel Borkmann.

Signed-off-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 		2019-04-09 17:05:47 -07:00
..
accounting delayacct: track delays from thrashing cache pages 2018-10-26 16:26:32 -07:00
arch tools headers uapi: Sync copy of asm-generic/unistd.h with the kernel sources 2019-03-11 16:13:04 -03:00
bpf bpf: bpftool support for dumping data/bss/rodata sections 2019-04-09 17:05:47 -07:00
build perf build: Check what binutils's 'disassembler()' signature to use 2019-03-20 16:42:10 -03:00
cgroup
…
crypto crypto: user - rename err_cnt parameter 2018-12-07 14:15:00 +08:00
debugging tools: add a kernel-chktaint to tools/debugging 2019-01-08 16:29:52 -07:00
firewire
…
firmware tools/firmware/ihex2fw: Replace explicit alignment with ALIGN 2019-01-22 10:23:18 +01:00
gpio tools gpio: Allow overriding CFLAGS 2018-12-28 16:33:08 -03:00
hv Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1 2018-11-11 12:58:27 -08:00
iio Merge 5.0-rc6 into staging-next 2019-02-11 09:25:01 +01:00
include bpf, selftest: test {rd, wr}only flags and direct value access 2019-04-09 17:05:47 -07:00
io_uring io_uring: add a few test tools 2019-03-06 13:00:16 -07:00
kvm/kvm_stat tools/kvm_stat: switch to python3 2018-11-27 12:53:44 +01:00
laptop
…
leds
…
lib bpf, libbpf: add support for BTF Var and DataSec 2019-04-09 17:05:47 -07:00
memory-model tools/memory-model: Make scripts take "-j" abbreviation for "--jobs" 2019-01-21 11:07:04 +01:00
nfsd
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objtool objtool: Move objtool_file struct off the stack 2019-03-21 12:02:19 +01:00
pci
…
pcmcia
…
perf perf/core improvements and fixes: 2019-03-22 22:51:21 +01:00
power tools/power turbostat: return the exit status of a command 2019-03-19 16:51:16 +01:00
scripts
…
spi
…
testing bpf, selftest: test global data/bss/rodata sections 2019-04-09 17:05:47 -07:00
thermal/tmon tools thermal tmon: Use -O3 instead of -O1 if available 2019-01-04 12:54:49 -03:00
time
…
usb
…
virtio virtio: fix test build after uio.h change 2018-12-19 18:23:49 -05:00
vm tools/vm/slabinfo: clean up usage menu debug items 2019-03-05 21:07:20 -08:00
wmi
…
Makefile Merge branch 'thorsten' into docs-next 2019-01-08 16:38:36 -07:00