Re: [PATCH] perf bpf-filter: Return -1 directly when pfi allocation fails

From: Arnaldo Carvalho de Melo
Date: Tue Nov 12 2024 - 15:10:22 EST


On Tue, Nov 12, 2024 at 10:28:15AM +0800, Hao Ge wrote:
> From: Hao Ge <gehao@xxxxxxxxxx>
>
> Directly return -1 when pfi allocation fails,

The convention for this function is to return -errno, so please resubmit
returning -ENOMEM.

- Arnaldo

> instead of performing other operations on pfi.
>
> Fixes: 0fe2b18ddc40 ("perf bpf-filter: Support multiple events properly")
> Signed-off-by: Hao Ge <gehao@xxxxxxxxxx>
> ---
> tools/perf/util/bpf-filter.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/util/bpf-filter.c b/tools/perf/util/bpf-filter.c
> index e87b6789eb9e..34c8bf7e469e 100644
> --- a/tools/perf/util/bpf-filter.c
> +++ b/tools/perf/util/bpf-filter.c
> @@ -375,7 +375,7 @@ static int create_idx_hash(struct evsel *evsel, struct perf_bpf_filter_entry *en
> pfi = zalloc(sizeof(*pfi));
> if (pfi == NULL) {
> pr_err("Cannot save pinned filter index\n");
> - goto err;
> + return -1;
> }
>
> pfi->evsel = evsel;
> --
> 2.25.1