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tracing: Remove lookups from tracing_map hitcount 

Lookups inflate the hitcount, making it essentially useless.  Only
inserts and updates should really affect the hitcount anyway, so
explicitly filter lookups out.

Link: http://lkml.kernel.org/r/c8d9dc39d269a8abf88bf4102d0dfc65deb0fc7f.1506105045.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Tom Zanussi 2017-09-22 14:58:18 -05:00 committed by Steven Rostedt (VMware)
parent a15f7fc203
commit 83c07ecc42
1 changed files with 2 additions and 1 deletions
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3
kernel/trace/tracing_map.c
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@ -428,7 +428,8 @@ __tracing_map_insert(struct tracing_map *map, void *key, bool lookup_only)
if (test_key && test_key == key_hash && entry->val &&
keys_match(key, entry->val->key, map->key_size)) {
atomic64_inc(&map->hits);
if (!lookup_only)
atomic64_inc(&map->hits);
return entry->val;
}