Merge branch 'bpf-volatile-compare'

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Alexei Starovoitov says:

====================
bpf: volatile compare

From: Alexei Starovoitov <ast@kernel.org>

v2->v3:
Debugged profiler.c regression. It was caused by basic block layout.
Introduce bpf_cmp_likely() and bpf_cmp_unlikely() macros.
Debugged redundant <<=32, >>=32 with u32 variables. Added cast workaround.

v1->v2:
Fixed issues pointed out by Daniel, added more tests, attempted to convert profiler.c,
but barrier_var() wins vs bpf_cmp(). To be investigated.
Patches 1-4 are good to go, but 5 needs more work.
====================

Link: https://lore.kernel.org/r/20231226191148.48536-1-alexei.starovoitov@gmail.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

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This commit is contained in:

Andrii Nakryiko 2024-01-03 10:41:22 -08:00

parent a640de4cf9 7e3811cb99

commit b4560055c8

29 changed files with 171 additions and 275 deletions

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1

tools/testing/selftests/bpf/Makefile

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224

tools/testing/selftests/bpf/bpf_experimental.h

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2

tools/testing/selftests/bpf/progs/bpf_iter_bpf_percpu_hash_map.c

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2

tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c

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2

tools/testing/selftests/bpf/progs/bpf_iter_tasks.c

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tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c

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2

tools/testing/selftests/bpf/progs/cgroup_getset_retval_setsockopt.c

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tools/testing/selftests/bpf/progs/cgrp_ls_sleepable.c

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2

tools/testing/selftests/bpf/progs/cpumask_success.c

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20

tools/testing/selftests/bpf/progs/exceptions.c

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72

tools/testing/selftests/bpf/progs/exceptions_assert.c

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4

tools/testing/selftests/bpf/progs/iters.c

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3

tools/testing/selftests/bpf/progs/iters_task_vma.c

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tools/testing/selftests/bpf/progs/linked_funcs1.c

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tools/testing/selftests/bpf/progs/linked_funcs2.c

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tools/testing/selftests/bpf/progs/linked_list.c

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tools/testing/selftests/bpf/progs/local_storage.c

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tools/testing/selftests/bpf/progs/lsm.c

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tools/testing/selftests/bpf/progs/normal_map_btf.c

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68

tools/testing/selftests/bpf/progs/profiler.inc.h

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tools/testing/selftests/bpf/progs/sockopt_inherit.c

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tools/testing/selftests/bpf/progs/sockopt_multi.c

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2

tools/testing/selftests/bpf/progs/sockopt_qos_to_cc.c

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2

tools/testing/selftests/bpf/progs/test_bpf_ma.c

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tools/testing/selftests/bpf/progs/test_core_reloc_kernel.c

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8

tools/testing/selftests/bpf/progs/test_core_reloc_module.c

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tools/testing/selftests/bpf/progs/test_fsverity.c

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2

tools/testing/selftests/bpf/progs/test_skc_to_unix_sock.c

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2

tools/testing/selftests/bpf/progs/test_xdp_do_redirect.c

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