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vtophys: remove internal device refcount

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This was dead code. Registering the same device more than
once has never been possible within a single process.

Change-Id: I04fa2a62cd9f3d7f99ff799ea4504c49a2232da4
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/433866
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Darek Stojaczyk 2018-11-18 02:23:22 +01:00 committed by Jim Harris
parent 4734811dc6
commit 04babbea35
1 changed files with 8 additions and 23 deletions
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15
lib/env_dpdk/vtophys.c
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@ -103,7 +103,6 @@ static struct vfio_cfg g_vfio = {
struct spdk_vtophys_pci_device {
struct rte_pci_device *pci_device;
TAILQ_ENTRY(spdk_vtophys_pci_device) tailq;
uint64_t ref;
};
static pthread_mutex_t g_vtophys_pci_devices_mutex = PTHREAD_MUTEX_INITIALIZER;
@ -518,27 +517,16 @@ void
spdk_vtophys_pci_device_added(struct rte_pci_device *pci_device)
{
struct spdk_vtophys_pci_device *vtophys_dev;
bool found = false;
pthread_mutex_lock(&g_vtophys_pci_devices_mutex);
TAILQ_FOREACH(vtophys_dev, &g_vtophys_pci_devices, tailq) {
if (vtophys_dev->pci_device == pci_device) {
vtophys_dev->ref++;
found = true;
break;
}
}
if (!found) {
vtophys_dev = calloc(1, sizeof(*vtophys_dev));
if (vtophys_dev) {
vtophys_dev->pci_device = pci_device;
vtophys_dev->ref = 1;
TAILQ_INSERT_TAIL(&g_vtophys_pci_devices, vtophys_dev, tailq);
} else {
DEBUG_PRINT("Memory allocation error\n");
}
}
pthread_mutex_unlock(&g_vtophys_pci_devices_mutex);
#if SPDK_VFIO_ENABLED
@ -579,11 +567,8 @@ spdk_vtophys_pci_device_removed(struct rte_pci_device *pci_device)
pthread_mutex_lock(&g_vtophys_pci_devices_mutex);
TAILQ_FOREACH(vtophys_dev, &g_vtophys_pci_devices, tailq) {
if (vtophys_dev->pci_device == pci_device) {
assert(vtophys_dev->ref > 0);
if (--vtophys_dev->ref == 0) {
TAILQ_REMOVE(&g_vtophys_pci_devices, vtophys_dev, tailq);
free(vtophys_dev);
}
break;
}
}