kernel/tools/testing/selftests/bpf/progs/bpf_loop.c, branch linux-6.2.y

selftests/bpf: BPF test_prog selftests for bpf_loop inlining

2022-06-21T00:40:52Z

Two new test BPF programs for test_prog selftests checking bpf_loop behavior. Both are corner cases for bpf_loop inlinig transformation: - check that bpf_loop behaves correctly when callback function is not a compile time constant - check that local function variables are not affected by allocating additional stack storage for registers spilled by loop inlining Signed-off-by: Eduard Zingerman Acked-by: Song Liu Link: https://lore.kernel.org/r/20220620235344.569325-6-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Fix tests to use arch-dependent syscall entry points

2022-02-07T16:05:24Z

Some of the tests are using x86_64 ABI-specific syscall entry points (such as __x64_sys_nanosleep and __x64_sys_getpgid). Update them to use architecture-dependent syscall entry names. Also update fexit_sleep test to not use BPF_PROG() so that it is clear that the syscall parameters aren't being accessed in the bpf prog. Note that none of the bpf progs in these tests are actually accessing any of the syscall parameters. The only exception is perfbuf_bench, which passes on the bpf prog context into bpf_perf_event_output() as a pointer to pt_regs, but that looks to be mostly ignored. Signed-off-by: Naveen N. Rao Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/e35f7051f03e269b623a68b139d8ed131325f7b7.1643973917.git.naveen.n.rao@linux.vnet.ibm.com

selftests/bpf: Add bpf_loop test

2021-11-30T18:56:28Z

Add test for bpf_loop testing a variety of cases: various nr_loops, null callback ctx, invalid flags, nested callbacks. Signed-off-by: Joanne Koong Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211130030622.4131246-3-joannekoong@fb.com