linux-gen: pool: remove per thread stats zeroing

Simplify and speed up pool statistics function a bit by removing
unnecessary zeroing of per thread statistics.

Signed-off-by: Petri Savolainen <petri.savolainen@nokia.com>
Reviewed-by: Matias Elo <matias.elo@nokia.com>
Acked-by: Ashwin Sekhar T K <asekhar@marvell.com>

platform/linux-generic/odp_pool.c

@@ -1688,7 +1688,6 @@ unsigned int odp_pool_max_index(void)
 int odp_pool_stats(odp_pool_t pool_hdl, odp_pool_stats_t *stats)
 {
 	pool_t *pool;
-	uint16_t first, last;
 
 	if (odp_unlikely(pool_hdl == ODP_POOL_INVALID)) {
 		_ODP_ERR("Invalid pool handle\n");
@@ -1700,14 +1699,9 @@ int odp_pool_stats(odp_pool_t pool_hdl, odp_pool_stats_t *stats)
 	}
 
 	pool = _odp_pool_entry(pool_hdl);
-	first = stats->thread.first;
-	last = stats->thread.last;
 
-	memset(stats, 0, sizeof(odp_pool_stats_t));
-
-	/* Restore input parameters */
-	stats->thread.first = first;
-	stats->thread.last = last;
+	/* Zero everything else but per thread statistics */
+	memset(stats, 0, offsetof(odp_pool_stats_t, thread));
 
 	if (pool->params.stats.bit.available)
 		stats->available = ring_ptr_len(&pool->ring->hdr);