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selftests/bpf: Fix conflicts with built-in functions in bench_local_storage_create 

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:
d1c3882392
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: cbe9d93d58 ("selftests/bpf: Add bench for task storage creation")
Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230331075848.1642814-1-james.hilliard1@gmail.com
This commit is contained in:
James Hilliard 2023-03-31 01:58:42 -06:00 committed by Andrii Nakryiko
parent e941933c49
commit 9af0f555ae
2 changed files with 2 additions and 2 deletions
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2
tools/testing/selftests/bpf/benchs/bench_local_storage_create.c
View File

@ -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);
}

2
tools/testing/selftests/bpf/progs/bench_local_storage_create.c
View File

@ -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;