[PATCH v2 4/9] trace: rework loop on trace points

[Jerin Jacob]

On Tue, Oct 4, 2022 at 3:15 PM David Marchand <david.marchand at redhat.com> wrote:
>
> Directly skip the block when a trace point does not match the user
> criteria.
>
> Signed-off-by: David Marchand <david.marchand at redhat.com>

Acked-by: Jerin Jacob <jerinj at marvell.com>


> ---
>  lib/eal/common/eal_common_trace.c | 34 +++++++++++++++++--------------
>  1 file changed, 19 insertions(+), 15 deletions(-)
>
> diff --git a/lib/eal/common/eal_common_trace.c b/lib/eal/common/eal_common_trace.c
> index 1db11e3e14..6b8660c318 100644
> --- a/lib/eal/common/eal_common_trace.c
> +++ b/lib/eal/common/eal_common_trace.c
> @@ -186,15 +186,18 @@ rte_trace_pattern(const char *pattern, bool enable)
>         int rc = 0, found = 0;
>
>         STAILQ_FOREACH(tp, &tp_list, next) {
> -               if (fnmatch(pattern, tp->name, 0) == 0) {
> -                       if (enable)
> -                               rc = rte_trace_point_enable(tp->handle);
> -                       else
> -                               rc = rte_trace_point_disable(tp->handle);
> -                       found = 1;
> +               if (fnmatch(pattern, tp->name, 0) != 0)
> +                       continue;
> +
> +               if (enable)
> +                       rc = rte_trace_point_enable(tp->handle);
> +               else
> +                       rc = rte_trace_point_disable(tp->handle);
> +               if (rc < 0) {
> +                       found = 0;
> +                       break;
>                 }
> -               if (rc < 0)
> -                       return rc;
> +               found = 1;
>         }
>
>         return rc | found;
> @@ -211,17 +214,18 @@ rte_trace_regexp(const char *regex, bool enable)
>                 return -EINVAL;
>
>         STAILQ_FOREACH(tp, &tp_list, next) {
> -               if (regexec(&r, tp->name, 0, NULL, 0) == 0) {
> -                       if (enable)
> -                               rc = rte_trace_point_enable(tp->handle);
> -                       else
> -                               rc = rte_trace_point_disable(tp->handle);
> -                       found = 1;
> -               }
> +               if (regexec(&r, tp->name, 0, NULL, 0) != 0)
> +                       continue;
> +
> +               if (enable)
> +                       rc = rte_trace_point_enable(tp->handle);
> +               else
> +                       rc = rte_trace_point_disable(tp->handle);
>                 if (rc < 0) {
>                         found = 0;
>                         break;
>                 }
> +               found = 1;
>         }
>         regfree(&r);
>
> --
> 2.37.3
>