On Fri, May 27, 2022 at 11:50:42AM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
>
> Be nice and explicitly free all memory on exit.
>
> Also fix a Valgrind reported unitilised conditional jump.
>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
> Cc: Petri Latvala <petri.latvala@xxxxxxxxx>
Reviewed-by: Petri Latvala <petri.latvala@xxxxxxxxx>
> ---
> tools/intel_gpu_top.c | 51 +++++++++++++++++++++++++++++++++++--------
> 1 file changed, 42 insertions(+), 9 deletions(-)
>
> diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
> index 26986a822bb7..997aff582ff7 100644
> --- a/tools/intel_gpu_top.c
> +++ b/tools/intel_gpu_top.c
> @@ -437,6 +437,36 @@ static struct engines *discover_engines(char *device)
> return engines;
> }
>
> +static void free_engines(struct engines *engines)
> +{
> + struct pmu_counter **pmu, *free_list[] = {
> + &engines->r_gpu,
> + &engines->r_pkg,
> + &engines->imc_reads,
> + &engines->imc_writes,
> + NULL
> + };
> + unsigned int i;
> +
> + for (pmu = &free_list[0]; *pmu; pmu++) {
> + if ((*pmu)->present)
> + free((char *)(*pmu)->units);
> + }
> +
> + for (i = 0; i < engines->num_engines; i++) {
> + struct engine *engine = engine_ptr(engines, i);
> +
> + free((char *)engine->name);
> + free((char *)engine->short_name);
> + free((char *)engine->display_name);
> + }
> +
> + closedir(engines->root);
> +
> + free(engines->class);
> + free(engines);
> +}
> +
> #define _open_pmu(type, cnt, pmu, fd) \
> ({ \
> int fd__; \
> @@ -1073,7 +1103,7 @@ static size_t freadat2buf(char *buf, const size_t sz, DIR *at, const char *name)
> return count;
> }
>
> -static struct clients *scan_clients(struct clients *clients)
> +static struct clients *scan_clients(struct clients *clients, bool display)
> {
> struct dirent *proc_dent;
> struct client *c;
> @@ -1181,7 +1211,7 @@ next:
> break;
> }
>
> - return display_clients(clients);
> + return display ? display_clients(clients) : clients;
> }
>
> static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
> @@ -2391,7 +2421,7 @@ static void process_stdin(unsigned int timeout_us)
>
> static bool has_drm_fdinfo(const struct igt_device_card *card)
> {
> - struct drm_client_fdinfo info;
> + struct drm_client_fdinfo info = { };
> unsigned int cnt;
> int fd;
>
> @@ -2572,7 +2602,7 @@ int main(int argc, char **argv)
> }
>
> pmu_sample(engines);
> - scan_clients(clients);
> + scan_clients(clients, false);
> codename = igt_device_get_pretty_name(&card, false);
>
> while (!stop_top) {
> @@ -2599,7 +2629,7 @@ int main(int argc, char **argv)
> pmu_sample(engines);
> t = (double)(engines->ts.cur - engines->ts.prev) / 1e9;
>
> - disp_clients = scan_clients(clients);
> + disp_clients = scan_clients(clients, true);
>
> if (stop_top)
> break;
> @@ -2649,21 +2679,24 @@ int main(int argc, char **argv)
> pops->close_struct();
> }
>
> - if (stop_top)
> - break;
> -
> if (disp_clients != clients)
> free_clients(disp_clients);
>
> + if (stop_top)
> + break;
> +
> if (output_mode == INTERACTIVE)
> process_stdin(period_us);
> else
> usleep(period_us);
> }
>
> + if (clients)
> + free_clients(clients);
> +
> free(codename);
> err:
> - free(engines);
> + free_engines(engines);
> free(pmu_device);
> exit:
> igt_devices_free();
> --
> 2.32.0
>
