| From | Tom Zanussi <> | Subject | [PATCH v2 36/40] tracing: Remove lookups from tracing_map hitcount | Date | Tue, 5 Sep 2017 16:57:48 -0500 |
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Lookups inflate the hitcount, making it essentially useless. Only inserts and updates should really affect the hitcount anyway, so explicitly filter lookups out.
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> --- kernel/trace/tracing_map.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/tracing_map.c b/kernel/trace/tracing_map.c index a4e5a56..f8e2338 100644 --- a/kernel/trace/tracing_map.c +++ b/kernel/trace/tracing_map.c @@ -538,7 +538,8 @@ static inline bool keys_match(void *key, void *test_key, unsigned key_size) if (test_key && test_key == key_hash) { if (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; } else if (unlikely(!entry->val)) { /* -- 1.9.3
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