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Commit 83c07ecc authored by Tom Zanussi's avatar Tom Zanussi Committed by Steven Rostedt (VMware)
Browse files

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: default avatarTom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent a15f7fc2

kernel/trace/tracing_map.c

+2 −1
Original line number Diff line number Diff line
@@ -428,6 +428,7 @@ __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)) {

			if (!lookup_only)

				atomic64_inc(&map->hits);

			return entry->val;

		}