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authorRich Felker <dalias@aerifal.cx>2011-03-30 08:58:25 -0400
committerRich Felker <dalias@aerifal.cx>2011-03-30 08:58:25 -0400
commit124b4ebc8a293e616cc0a7eaba3587c9b7ff13ec (patch)
tree80c2bdc3f961b6acb7344d5b8eaf725d219458d0 /Makefile
parent680630011d38eb9f96f92b2f080cc60f38f6df21 (diff)
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cheap special-case optimization for normal mutexes
cycle-level benchmark on atom cpu showed typical pthread_mutex_lock
call dropping from ~120 cycles to ~90 cycles with this change. benefit
may vary with compiler options and version, but this optimization is
very cheap to make and should always help some.
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