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| author |   Alexei Starovoitov <ast@kernel.org> | 2019-06-15 12:12:24 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-06-19 02:22:52 +0200 |
| commit | b061017f8b4d0e05d4c11486581a702fb2a975b2 (patch) | |
| tree | 8c8ba40095dc1d4aeb480c454df2abb683925d80 /tools/testing/selftests/bpf/progs/pyperf600_nounroll.c | |
| parent | selftests/bpf: add basic verifier tests for loops (diff) | |
| download | linux-dev-b061017f8b4d0e05d4c11486581a702fb2a975b2.tar.xz linux-dev-b061017f8b4d0e05d4c11486581a702fb2a975b2.zip | |
selftests/bpf: add realistic loop tests
Add a bunch of loop tests. Most of them are created by replacing
'#pragma unroll' with '#pragma clang loop unroll(disable)'
Several tests are artificially large:
/* partial unroll. llvm will unroll loop ~150 times.
* C loop count -> 600.
* Asm loop count -> 4.
* 16k insns in loop body.
* Total of 5 such loops. Total program size ~82k insns.
*/
"./pyperf600.o",
/* no unroll at all.
* C loop count -> 600.
* ASM loop count -> 600.
* ~110 insns in loop body.
* Total of 5 such loops. Total program size ~1500 insns.
*/
"./pyperf600_nounroll.o",
/* partial unroll. 19k insn in a loop.
* Total program size 20.8k insn.
* ~350k processed_insns
*/
"./strobemeta.o",
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/pyperf600_nounroll.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/pyperf600_nounroll.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/pyperf600_nounroll.c b/tools/testing/selftests/bpf/progs/pyperf600_nounroll.c new file mode 100644 index 000000000000..6beff7502f4d --- /dev/null +++ b/tools/testing/selftests/bpf/progs/pyperf600_nounroll.c @@ -0,0 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2019 Facebook +#define STACK_MAX_LEN 600 +#define NO_UNROLL +/* clang will not unroll at all. + * Total program size is around 2k insns + */ +#include "pyperf.h" |