Displaying 20 results from an estimated 203 matches for "nvectors".
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2017 Jan 27
0
[PATCH 4/9] virtio_pci: simplify MSI-X setup
...char * const names[],
- bool per_vq_vectors)
+ struct virtqueue *vqs[], vq_callback_t *callbacks[],
+ const char * const names[])
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
const char *name = dev_name(&vp_dev->vdev.dev);
int i, err = -ENOMEM, allocated_vectors, nvectors;
+ bool shared = false;
u16 msix_vec;
- if (per_vq_vectors) {
- /* Best option: one for change interrupt, one per vq. */
- nvectors = 1;
- for (i = 0; i < nvqs; ++i)
- if (callbacks[i])
- ++nvectors;
- } else {
- /* Second best: one for change, shared for all vqs. */
+ nvectors = 1;...
2014 Feb 19
3
[PATCH] virtio: Use pci_enable_msix_range() instead of pci_enable_msix()
...changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index a416f9b..dea042c 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -333,11 +333,9 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
for (i = 0; i < nvectors; ++i)
vp_dev->msix_entries[i].entry = i;
- /* pci_enable_msix returns positive if we can't get this many. */
- err = pci_enable_msix(vp_dev->pci_dev, vp_dev->msix_entries, nvectors);
- if (err > 0)
- err = -ENOSPC;
- if (err)
+ err = pci_enable_m...
2014 Feb 19
3
[PATCH] virtio: Use pci_enable_msix_range() instead of pci_enable_msix()
...changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index a416f9b..dea042c 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -333,11 +333,9 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
for (i = 0; i < nvectors; ++i)
vp_dev->msix_entries[i].entry = i;
- /* pci_enable_msix returns positive if we can't get this many. */
- err = pci_enable_msix(vp_dev->pci_dev, vp_dev->msix_entries, nvectors);
- if (err > 0)
- err = -ENOSPC;
- if (err)
+ err = pci_enable_m...
2017 Feb 05
0
[PATCH 2/9] virtio_pci: use shared interrupts for virtqueues
...(i = 1; i < vp_dev->msix_vectors; i++)
synchronize_irq(pci_irq_vector(vp_dev->pci_dev, i));
}
@@ -99,77 +97,10 @@ static irqreturn_t vp_interrupt(int irq, void *opaque)
return vp_vring_interrupt(irq, opaque);
}
-static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
- bool per_vq_vectors)
-{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
- const char *name = dev_name(&vp_dev->vdev.dev);
- unsigned i, v;
- int err = -ENOMEM;
-
- vp_dev->msix_vectors = nvectors;
-
- vp_dev->msix_names = kmalloc(nvectors * sizeof *vp_dev->msix_nam...
2013 Jun 20
3
[PATCH] virtio-pci: fix leaks of msix_affinity_masks
...t;pci_dev);
vp_dev->msix_enabled = 0;
- vp_dev->msix_vectors = 0;
}
+ vp_dev->msix_vectors = 0;
vp_dev->msix_used_vectors = 0;
kfree(vp_dev->msix_names);
vp_dev->msix_names = NULL;
@@ -309,6 +309,8 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
unsigned i, v;
int err = -ENOMEM;
+ vp_dev->msix_vectors = nvectors;
+
vp_dev->msix_entries = kmalloc(nvectors * sizeof *vp_dev->msix_entries,
GFP_KERNEL);
if (!vp_dev->msix_entries)
@@ -336,7 +338,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev...
2013 Jun 20
3
[PATCH] virtio-pci: fix leaks of msix_affinity_masks
...t;pci_dev);
vp_dev->msix_enabled = 0;
- vp_dev->msix_vectors = 0;
}
+ vp_dev->msix_vectors = 0;
vp_dev->msix_used_vectors = 0;
kfree(vp_dev->msix_names);
vp_dev->msix_names = NULL;
@@ -309,6 +309,8 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
unsigned i, v;
int err = -ENOMEM;
+ vp_dev->msix_vectors = nvectors;
+
vp_dev->msix_entries = kmalloc(nvectors * sizeof *vp_dev->msix_entries,
GFP_KERNEL);
if (!vp_dev->msix_entries)
@@ -336,7 +338,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev...
2014 Apr 19
1
RFC: sharing config interrupt between virtio devices for saving MSI
...++ b/drivers/virtio/virtio_pci.c
@@ -302,6 +302,8 @@ static void vp_free_vectors(struct virtio_device *vdev)
vp_dev->msix_affinity_masks = NULL;
}
+//static msix_entry *config_msix_entry;
+static char config_msix_name[100];
static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
bool per_vq_vectors)
{
@@ -341,14 +343,13 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
/* Set the vector used for configuration */
v = vp_dev->msix_used_vectors;
- snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names,
+ snprintf(conf...
2014 Apr 19
1
RFC: sharing config interrupt between virtio devices for saving MSI
...++ b/drivers/virtio/virtio_pci.c
@@ -302,6 +302,8 @@ static void vp_free_vectors(struct virtio_device *vdev)
vp_dev->msix_affinity_masks = NULL;
}
+//static msix_entry *config_msix_entry;
+static char config_msix_name[100];
static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
bool per_vq_vectors)
{
@@ -341,14 +343,13 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
/* Set the vector used for configuration */
v = vp_dev->msix_used_vectors;
- snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names,
+ snprintf(conf...
2016 Nov 06
8
virtio_pci irq handling cleanups
Hi Michael,
this series contains a couple cleanups for the virtio_pci interrupt
handling code, including a switch to the new pci_irq_alloc_vectors
helper. All these are in preparation of taking advantage of the new
PCI layer / core IRQ interrupt affinity handling, for which I will
send out a series once this and some core interrupt handling changes
are in.
2016 Nov 06
8
virtio_pci irq handling cleanups
Hi Michael,
this series contains a couple cleanups for the virtio_pci interrupt
handling code, including a switch to the new pci_irq_alloc_vectors
helper. All these are in preparation of taking advantage of the new
PCI layer / core IRQ interrupt affinity handling, for which I will
send out a series once this and some core interrupt handling changes
are in.
2014 Sep 01
3
[PATCH RFC] virtio-pci: share config interrupt between virtio devices
...addr + VIRTIO_MSI_CONFIG_VECTOR);
- /* Flush the write out to device */
- ioread16(vp_dev->ioaddr + VIRTIO_MSI_CONFIG_VECTOR);
-
pci_disable_msix(vp_dev->pci_dev);
vp_dev->msix_enabled = 0;
}
@@ -339,24 +334,18 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
goto error;
vp_dev->msix_enabled = 1;
- /* Set the vector used for configuration */
- v = vp_dev->msix_used_vectors;
- snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names,
+ /* Set shared IRQ for configuration */
+ snprintf(vp_dev->config_msix_name, sizeof(*vp_dev->...
2014 Sep 01
3
[PATCH RFC] virtio-pci: share config interrupt between virtio devices
...addr + VIRTIO_MSI_CONFIG_VECTOR);
- /* Flush the write out to device */
- ioread16(vp_dev->ioaddr + VIRTIO_MSI_CONFIG_VECTOR);
-
pci_disable_msix(vp_dev->pci_dev);
vp_dev->msix_enabled = 0;
}
@@ -339,24 +334,18 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
goto error;
vp_dev->msix_enabled = 1;
- /* Set the vector used for configuration */
- v = vp_dev->msix_used_vectors;
- snprintf(vp_dev->msix_names[v], sizeof *vp_dev->msix_names,
+ /* Set shared IRQ for configuration */
+ snprintf(vp_dev->config_msix_name, sizeof(*vp_dev->...
2010 Mar 25
2
[PATCH v3 1/1] Shared memory uio_pci driver
...h>
> +
> +#include <asm/io.h>
> +
> +#define IntrStatus 0x04
> +#define IntrMask 0x00
> +
> +struct ivshmem_info {
> + struct uio_info *uio;
> + struct pci_dev *dev;
> + char (*msix_names)[256];
> + struct msix_entry *msix_entries;
> + int nvectors;
> +};
> +
> +static irqreturn_t ivshmem_handler(int irq, struct uio_info *dev_info)
> +{
> +
> + void __iomem *plx_intscr = dev_info->mem[0].internal_addr
> + + IntrStatus;
> + u32 val;
> +
> + val = readl(plx_intscr);
> + if (val...
2010 Mar 25
2
[PATCH v3 1/1] Shared memory uio_pci driver
...h>
> +
> +#include <asm/io.h>
> +
> +#define IntrStatus 0x04
> +#define IntrMask 0x00
> +
> +struct ivshmem_info {
> + struct uio_info *uio;
> + struct pci_dev *dev;
> + char (*msix_names)[256];
> + struct msix_entry *msix_entries;
> + int nvectors;
> +};
> +
> +static irqreturn_t ivshmem_handler(int irq, struct uio_info *dev_info)
> +{
> +
> + void __iomem *plx_intscr = dev_info->mem[0].internal_addr
> + + IntrStatus;
> + u32 val;
> +
> + val = readl(plx_intscr);
> + if (val...
2013 Jun 19
2
[PATCH] virtio-pci: fix leaks of msix_affinity_masks
...s changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index a7ce730..3c0a6ef 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -309,6 +309,8 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
unsigned i, v;
int err = -ENOMEM;
+ vp_dev->msix_vectors = nvectors;
+
vp_dev->msix_entries = kmalloc(nvectors * sizeof *vp_dev->msix_entries,
GFP_KERNEL);
if (!vp_dev->msix_entries)
@@ -336,7 +338,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev...
2013 Jun 19
2
[PATCH] virtio-pci: fix leaks of msix_affinity_masks
...s changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index a7ce730..3c0a6ef 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -309,6 +309,8 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
unsigned i, v;
int err = -ENOMEM;
+ vp_dev->msix_vectors = nvectors;
+
vp_dev->msix_entries = kmalloc(nvectors * sizeof *vp_dev->msix_entries,
GFP_KERNEL);
if (!vp_dev->msix_entries)
@@ -336,7 +338,6 @@ static int vp_request_msix_vectors(struct virtio_device *vdev...
2017 Jan 27
0
[PATCH 2/9] virtio_pci: use shared interrupts for virtqueues
...(i = 1; i < vp_dev->msix_vectors; i++)
synchronize_irq(pci_irq_vector(vp_dev->pci_dev, i));
}
@@ -99,77 +97,10 @@ static irqreturn_t vp_interrupt(int irq, void *opaque)
return vp_vring_interrupt(irq, opaque);
}
-static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
- bool per_vq_vectors)
-{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
- const char *name = dev_name(&vp_dev->vdev.dev);
- unsigned i, v;
- int err = -ENOMEM;
-
- vp_dev->msix_vectors = nvectors;
-
- vp_dev->msix_names = kmalloc(nvectors * sizeof *vp_dev->msix_nam...
2016 Nov 17
13
automatic IRQ affinity for virtio
Hi Michael,
this series contains a couple cleanups for the virtio_pci interrupt
handling code, including a switch to the new pci_irq_alloc_vectors
helper, and support for automatic affinity by the PCI layer if the
consumers ask for it. It then converts over virtio_blk to use this
functionality so that it's blk-mq queues are aligned to the MSI-X
vector routing. I have a similar patch in the
2016 Nov 17
13
automatic IRQ affinity for virtio
Hi Michael,
this series contains a couple cleanups for the virtio_pci interrupt
handling code, including a switch to the new pci_irq_alloc_vectors
helper, and support for automatic affinity by the PCI layer if the
consumers ask for it. It then converts over virtio_blk to use this
functionality so that it's blk-mq queues are aligned to the MSI-X
vector routing. I have a similar patch in the
2009 Sep 21
0
[PATCH 1/6] virtio_pci: minor MSI-X cleanups
1) Rename vp_request_vectors to vp_request_msix_vectors, and take
non-MSI-X case out to caller.
2) Comment weird pci_enable_msix API
3) Rename vp_find_vq to setup_vq.
4) Fix spaces to tabs
5) Make nvectors calc internal to vp_try_to_find_vqs()
6) Rename vector to msix_vector for more clarity.
Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
Cc: "Michael S. Tsirkin" <mst at redhat.com>
---
drivers/virtio/virtio_pci.c | 89 ++++++++++++++++++++++++--------------------
1...