diff options
| author |   Radu Nicolau <radu.nicolau@intel.com> | 2021-01-14 10:25:02 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-01-21 13:39:12 +0000 |
| commit | e1480a2c12ff764622dd2ae1bc9bce6cd25bcbdd (patch) | |
| tree | b3b35b537b2428ce32fcdefcb040e2f3878b6f9f /src/plugins/avf/avf.h | |
| parent | f35fef244682645762cdff14cf313a42dd2d750c (diff) | |
avf: use write combining store for queues tail update
Performance improvement: on supported platforms, currently only Intel Tremont,
use a write combining store to update the tail pointers.
Also, Tremont node variant is added for all.
Type: improvement
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Change-Id: Ie9606e403b7d9655184f778e3ffee3027c8c9edd
Diffstat (limited to 'src/plugins/avf/avf.h')
| -rw-r--r-- | src/plugins/avf/avf.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/plugins/avf/avf.h b/src/plugins/avf/avf.h index b3fcc259206..23cc36c4882 100644 --- a/src/plugins/avf/avf.h +++ b/src/plugins/avf/avf.h @@ -373,6 +373,17 @@ avf_reg_flush (avf_device_t * ad) asm volatile ("":::"memory"); } +static inline void +avf_tail_write (volatile u32 *addr, u32 val) +{ +#ifdef __MOVDIRI__ + _mm_sfence (); + _directstoreu_u32 ((void *) addr, val); +#else + clib_atomic_store_rel_n (addr, val); +#endif +} + static_always_inline int avf_rxd_is_not_eop (avf_rx_desc_t * d) { |