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lib: objagg: fix handling of object with 0 users when assembling hints 

It is possible that there might be an originally parent object with 0
direct users that is in hints no longer considered as parent. Then the
weight of this object is 0 and current code ignores him. That's why the
total amount of hint objects might be lower than for the original
objagg and WARN_ON is hit. Fix this be considering 0 weight valid.

Fixes: 9069a3817d ("lib: objagg: implement optimization hints assembly and use hints for object creation")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2019-02-14 15:39:07 +01:00 committed by David S. Miller
parent e0c6d1d859
commit fa8ba2cba7
1 changed files with 5 additions and 3 deletions
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8
lib/objagg.c
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@ -744,8 +744,6 @@ static unsigned int objagg_tmp_graph_node_weight(struct objagg_tmp_graph *graph,
* that this node can represent with delta.
*/
if (node->crossed_out)
return 0;
for (j = 0; j < graph->nodes_count; j++) {
if (!objagg_tmp_graph_is_edge(graph, index, j))
continue;
@ -759,14 +757,18 @@ static unsigned int objagg_tmp_graph_node_weight(struct objagg_tmp_graph *graph,
static int objagg_tmp_graph_node_max_weight(struct objagg_tmp_graph *graph)
{
struct objagg_tmp_node *node;
unsigned int max_weight = 0;
unsigned int weight;
int max_index = -1;
int i;
for (i = 0; i < graph->nodes_count; i++) {
node = &graph->nodes[i];
if (node->crossed_out)
continue;
weight = objagg_tmp_graph_node_weight(graph, i);
if (weight > max_weight) {
if (weight >= max_weight) {
max_weight = weight;
max_index = i;
}