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rte_virtio: removed direct rte_smb_*mb calls

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Replaced them with spdk alternatives.
While here, also clarified the documentation
for virtio_*mb.

Change-Id: Ia604e9abd8eadc18fa3ea1a782e29e7da6b3c162
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/385627
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Dariusz Stojaczyk 2017-11-23 14:40:39 +01:00 committed by Jim Harris
parent 75cb2da951
commit 17a1f07e57
1 changed files with 6 additions and 10 deletions
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16
lib/bdev/virtio/rte_virtio/virtio.c
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@ -48,7 +48,6 @@
#include <rte_common.h>
#include <rte_errno.h>
#include <rte_memory.h>
#include <rte_eal.h>
#include <rte_dev.h>
#include <rte_prefetch.h>
@ -56,16 +55,13 @@
#include "spdk/env.h"
#include "spdk/barrier.h"
/*
* Per virtio_config.h in Linux.
* For virtio_pci on SMP, we don't need to order with respect to MMIO
* accesses through relaxed memory I/O windows, so smp_mb() et al are
* sufficient.
*
/* We use SMP memory barrier variants as all virtio_pci devices
* are purely virtual. All MMIO is executed on a CPU core, so
* there's no need to do full MMIO synchronization.
*/
#define virtio_mb() rte_smp_mb()
#define virtio_rmb() rte_smp_rmb()
#define virtio_wmb() rte_smp_wmb()
#define virtio_mb() spdk_smp_mb()
#define virtio_rmb() spdk_smp_rmb()
#define virtio_wmb() spdk_smp_wmb()
#include "virtio.h"