Searched hist:"387 b532138eed5b12e1afa68cafb6a389507310f" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/tools/testing/selftests/bpf/progs/ |
| H A D | task_ls_recursion.c | diff 387b532138eed5b12e1afa68cafb6a389507310f Tue Oct 25 13:45:24 CDT 2022 Martin KaFai Lau <martin.lau@kernel.org> selftests/bpf: Tracing prog can still do lookup under busy lock
This patch modifies the task_ls_recursion test to check that
the first bpf_task_storage_get(&map_a, ...) in BPF_PROG(on_update)
can still do the lockless lookup even it cannot acquire the percpu
busy lock. If the lookup succeeds, it will increment the value
by 1 and the value in the task storage map_a will become 200+1=201.
After that, BPF_PROG(on_update) tries to delete from map_a and
should get -EBUSY because it cannot acquire the percpu busy lock
after finding the data.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20221025184524.3526117-10-martin.lau@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
| /openbmc/linux/tools/testing/selftests/bpf/prog_tests/ |
| H A D | task_local_storage.c | diff 387b532138eed5b12e1afa68cafb6a389507310f Tue Oct 25 13:45:24 CDT 2022 Martin KaFai Lau <martin.lau@kernel.org> selftests/bpf: Tracing prog can still do lookup under busy lock
This patch modifies the task_ls_recursion test to check that
the first bpf_task_storage_get(&map_a, ...) in BPF_PROG(on_update)
can still do the lockless lookup even it cannot acquire the percpu
busy lock. If the lookup succeeds, it will increment the value
by 1 and the value in the task storage map_a will become 200+1=201.
After that, BPF_PROG(on_update) tries to delete from map_a and
should get -EBUSY because it cannot acquire the percpu busy lock
after finding the data.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20221025184524.3526117-10-martin.lau@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|