Re: [PATCH bpf-next v1 01/19] selftests/bpf: Use pid_t consistently in test_progs.c

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On Mon, 2024-07-22 at 22:54 -0700, Tony Ambardar wrote:
> Use pid_t rather than __pid_t when allocating memory for
> 'worker_pids' in
> 'struct test_env', as this is its declared type and also avoids
> compile
> errors seen building against musl libc on mipsel64:
> 
>   test_progs.c:1738:49: error: '__pid_t' undeclared (first use in
> this function); did you mean 'pid_t'?
>    1738 |                 env.worker_pids = calloc(sizeof(__pid_t),
> env.workers);
>         |                                                 ^~~~~~~
>         |                                                 pid_t
>   test_progs.c:1738:49: note: each undeclared identifier is reported
> only once for each function it appears in
> 
> Fixes: 91b2c0afd00c ("selftests/bpf: Add parallelism to test_progs")
> Signed-off-by: Tony Ambardar <tony.ambardar@xxxxxxxxx>
> ---
>  tools/testing/selftests/bpf/test_progs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/bpf/test_progs.c
> b/tools/testing/selftests/bpf/test_progs.c
> index 1677f6f1eaae..091b49bf671a 100644
> --- a/tools/testing/selftests/bpf/test_progs.c
> +++ b/tools/testing/selftests/bpf/test_progs.c
> @@ -1738,7 +1738,7 @@ int main(int argc, char **argv)
>  	/* launch workers if requested */
>  	env.worker_id = -1; /* main process */
>  	if (env.workers) {
> -		env.worker_pids = calloc(sizeof(__pid_t),
> env.workers);
> +		env.worker_pids = calloc(sizeof(pid_t),
> env.workers);

Yes, "pid_t" is much better. "worker_pids" dose define as "pid_t" in
test_progs.h:

struct test_env {
	... ...
	pid_t *worker_pids; /* array of worker pids */
	... ...
};

Acked-by: Geliang Tang <geliang@xxxxxxxxxx>

>  		env.worker_socks = calloc(sizeof(int), env.workers);
>  		if (env.debug)
>  			fprintf(stdout, "Launching %d workers.\n",
> env.workers);





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