On Thu, Sep 12, 2019 at 4:57 PM Gavin Hu <gavin...@arm.com> wrote: > > Use the new API to wait in low power state instead of continuous > polling to save CPU cycles and power. > > Signed-off-by: Gavin Hu <gavin...@arm.com> > Reviewed-by: Ruifeng Wang <ruifeng.w...@arm.com>
Reviewed-by: Jerin Jacob <jer...@marvell.com> > --- > drivers/event/opdl/opdl_ring.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/event/opdl/opdl_ring.c b/drivers/event/opdl/opdl_ring.c > index e8b29e2..f446fa3 100644 > --- a/drivers/event/opdl/opdl_ring.c > +++ b/drivers/event/opdl/opdl_ring.c > @@ -17,6 +17,7 @@ > #include <rte_memory.h> > #include <rte_memzone.h> > #include <rte_eal_memconfig.h> > +#include <rte_atomic.h> > > #include "opdl_ring.h" > #include "opdl_log.h" > @@ -475,9 +476,7 @@ opdl_ring_input_multithread(struct opdl_ring *t, const > void *entries, > /* If another thread started inputting before this one, but hasn't > * finished, we need to wait for it to complete to update the tail. > */ > - while (unlikely(__atomic_load_n(&s->shared.tail, __ATOMIC_ACQUIRE) != > - old_head)) > - rte_pause(); > + rte_wait_until_equal_acquire_32(&s->shared.tail, old_head); > > __atomic_store_n(&s->shared.tail, old_head + num_entries, > __ATOMIC_RELEASE); > -- > 2.7.4 >
