On 01/25/2012 04:43 AM, Torvald Riegel wrote:
> libitm: Fix wake-up of readers in futex-based serial lock.
>
> libitm/
> * config/linux/rwlock.cc (GTM::gtm_rwlock::write_unlock): Fix reader
> wake-up.
Ok.
r~
This patch fixes a lost wake-up bug in the futex-based serial lock
implementation. The previous code lacked some pieces of synchronization
(a seq_cst barrier and resetting a flag that is checked by the
respective futex_wait()), which led to those lost wake-ups when waking
and waiting were racing a
