The fork function in gcc is considered a built in function due to being used by libgcov when building with gnu extensions. Rename fork to sched_process_fork to prevent this conflict. See details: https://github.com/gcc-mirror/gcc/commit/d1c38823924506d389ca58d02926ace21bdf82fa https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82457 Fixes the following error: In file included from progs/bench_local_storage_create.c:6: progs/bench_local_storage_create.c:43:14: error: conflicting types for built-in function 'fork'; expected 'int(void)' [-Werror=builtin-declaration-mismatch] 43 | int BPF_PROG(fork, struct task_struct *parent, struct task_struct *child) | ^~~~ Fixes: cbe9d93d58b1 ("selftests/bpf: Add bench for task storage creation") Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx> Cc: Martin KaFai Lau <martin.lau@xxxxxxxxxx> --- tools/testing/selftests/bpf/benchs/bench_local_storage_create.c | 2 +- tools/testing/selftests/bpf/progs/bench_local_storage_create.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c b/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c index abb0321d4f34..cff703f90e95 100644 --- a/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c +++ b/tools/testing/selftests/bpf/benchs/bench_local_storage_create.c @@ -95,7 +95,7 @@ static void setup(void) exit(1); } } else { - if (!bpf_program__attach(skel->progs.fork)) { + if (!bpf_program__attach(skel->progs.sched_process_fork)) { fprintf(stderr, "Error attaching bpf program\n"); exit(1); } diff --git a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c index 7c851c9d5e47..e4bfbba6c193 100644 --- a/tools/testing/selftests/bpf/progs/bench_local_storage_create.c +++ b/tools/testing/selftests/bpf/progs/bench_local_storage_create.c @@ -40,7 +40,7 @@ int BPF_PROG(kmalloc, unsigned long call_site, const void *ptr, } SEC("tp_btf/sched_process_fork") -int BPF_PROG(fork, struct task_struct *parent, struct task_struct *child) +int BPF_PROG(sched_process_fork, struct task_struct *parent, struct task_struct *child) { struct storage *stg; -- 2.34.1
