Displaying 20 results from an estimated 29 matches for "airq_iv_create".
2019 May 27
1
[PATCH v2 5/8] virtio/s390: use cacheline aligned airq bit vectors
On Thu, 23 May 2019 18:22:06 +0200
Michael Mueller <mimu at linux.ibm.com> wrote:
> From: Halil Pasic <pasic at linux.ibm.com>
>
> The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
> us use it! We actually wanted the vector to span a cacheline all along.
>
> Signed-off-by: Halil Pasic <pasic at linux.ibm.com>
> ---
> drivers/s390/virtio/virtio_ccw.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/s390/...
2019 May 23
0
[PATCH v2 5/8] virtio/s390: use cacheline aligned airq bit vectors
From: Halil Pasic <pasic at linux.ibm.com>
The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
us use it! We actually wanted the vector to span a cacheline all along.
Signed-off-by: Halil Pasic <pasic at linux.ibm.com>
---
drivers/s390/virtio/virtio_ccw.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virti...
2019 May 29
0
[PATCH v3 5/8] virtio/s390: use cacheline aligned airq bit vectors
From: Halil Pasic <pasic at linux.ibm.com>
The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
us use it! We actually wanted the vector to span a cacheline all along.
Signed-off-by: Halil Pasic <pasic at linux.ibm.com>
Signed-off-by: Michael Mueller <mimu at linux.ibm.com>
---
drivers/s390/virtio/virtio_ccw.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff...
2019 Jun 12
0
[PATCH v5 5/8] virtio/s390: use cacheline aligned airq bit vectors
The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
us use it! We actually wanted the vector to span a cacheline all along.
Signed-off-by: Halil Pasic <pasic at linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger at de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck at redhat.com>
---
drivers/s390/virtio/virtio_ccw....
2019 Apr 26
0
[PATCH 07/10] s390/airq: use DMA memory for adapter interrupts
...lude "cio.h"
#include "cio_debug.h"
@@ -113,6 +114,11 @@ void __init init_airq_interrupts(void)
setup_irq(THIN_INTERRUPT, &airq_interrupt);
}
+static inline unsigned long iv_size(unsigned long bits)
+{
+ return BITS_TO_LONGS(bits) * sizeof(unsigned long);
+}
+
/**
* airq_iv_create - create an interrupt vector
* @bits: number of bits in the interrupt vector
@@ -123,14 +129,15 @@ void __init init_airq_interrupts(void)
struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
{
struct airq_iv *iv;
- unsigned long size;
+ unsigned long size = 0;
iv = kzal...
2019 May 23
0
[PATCH v2 4/8] s390/airq: use DMA memory for adapter interrupts
...adapter_interrupt() - register adapter interrupt handler
@@ -115,6 +117,11 @@ void __init init_airq_interrupts(void)
setup_irq(THIN_INTERRUPT, &airq_interrupt);
}
+static inline unsigned long iv_size(unsigned long bits)
+{
+ return BITS_TO_LONGS(bits) * sizeof(unsigned long);
+}
+
/**
* airq_iv_create - create an interrupt vector
* @bits: number of bits in the interrupt vector
@@ -132,17 +139,18 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
goto out;
iv->bits = bits;
iv->flags = flags;
- size = BITS_TO_LONGS(bits) * sizeof(unsigned long);
+ size = iv_s...
2019 Jun 06
0
[PATCH v4 4/8] s390/airq: use DMA memory for adapter interrupts
...adapter_interrupt() - register adapter interrupt handler
@@ -115,6 +117,11 @@ void __init init_airq_interrupts(void)
setup_irq(THIN_INTERRUPT, &airq_interrupt);
}
+static inline unsigned long iv_size(unsigned long bits)
+{
+ return BITS_TO_LONGS(bits) * sizeof(unsigned long);
+}
+
/**
* airq_iv_create - create an interrupt vector
* @bits: number of bits in the interrupt vector
@@ -132,17 +139,18 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
goto out;
iv->bits = bits;
iv->flags = flags;
- size = BITS_TO_LONGS(bits) * sizeof(unsigned long);
+ size = iv_s...
2019 Jun 12
0
[PATCH v5 4/8] s390/airq: use DMA memory for adapter interrupts
...adapter_interrupt() - register adapter interrupt handler
@@ -115,6 +117,11 @@ void __init init_airq_interrupts(void)
setup_irq(THIN_INTERRUPT, &airq_interrupt);
}
+static inline unsigned long iv_size(unsigned long bits)
+{
+ return BITS_TO_LONGS(bits) * sizeof(unsigned long);
+}
+
/**
* airq_iv_create - create an interrupt vector
* @bits: number of bits in the interrupt vector
@@ -132,17 +139,19 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
goto out;
iv->bits = bits;
iv->flags = flags;
- size = BITS_TO_LONGS(bits) * sizeof(unsigned long);
+ size = iv_s...
2019 May 29
0
[PATCH v3 4/8] s390/airq: use DMA memory for adapter interrupts
...adapter_interrupt() - register adapter interrupt handler
@@ -115,6 +117,11 @@ void __init init_airq_interrupts(void)
setup_irq(THIN_INTERRUPT, &airq_interrupt);
}
+static inline unsigned long iv_size(unsigned long bits)
+{
+ return BITS_TO_LONGS(bits) * sizeof(unsigned long);
+}
+
/**
* airq_iv_create - create an interrupt vector
* @bits: number of bits in the interrupt vector
@@ -132,17 +139,18 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
goto out;
iv->bits = bits;
iv->flags = flags;
- size = BITS_TO_LONGS(bits) * sizeof(unsigned long);
+ size = iv_s...
2019 May 13
2
[PATCH 05/10] s390/cio: introduce DMA pools to cio
...r the bit vector */
> unsigned long *ptr; /* Pointer associated with each bit */
> diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
> index 7a5c0a0..f11f437 100644
> --- a/drivers/s390/cio/airq.c
> +++ b/drivers/s390/cio/airq.c
> @@ -136,8 +136,7 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
> goto out;
> iv->bits = bits;
> size = iv_size(bits);
> - iv->vector = dma_alloc_coherent(cio_get_dma_css_dev(), size,
> - &iv->vector_dma, GFP_KERNEL);
> + iv->vector = cio_dma_zalloc(size);
> if (!iv->...
2019 May 13
2
[PATCH 05/10] s390/cio: introduce DMA pools to cio
...r the bit vector */
> unsigned long *ptr; /* Pointer associated with each bit */
> diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
> index 7a5c0a0..f11f437 100644
> --- a/drivers/s390/cio/airq.c
> +++ b/drivers/s390/cio/airq.c
> @@ -136,8 +136,7 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
> goto out;
> iv->bits = bits;
> size = iv_size(bits);
> - iv->vector = dma_alloc_coherent(cio_get_dma_css_dev(), size,
> - &iv->vector_dma, GFP_KERNEL);
> + iv->vector = cio_dma_zalloc(size);
> if (!iv->...
2019 Jun 12
1
[PATCH v5 4/8] s390/airq: use DMA memory for adapter interrupts
...---
> arch/s390/include/asm/airq.h | 2 ++
> drivers/s390/cio/airq.c | 37 ++++++++++++++++++++++--------------
> drivers/s390/cio/cio.h | 2 ++
> drivers/s390/cio/css.c | 1 +
> 4 files changed, 28 insertions(+), 14 deletions(-)
>
(...)
> /**
> * airq_iv_create - create an interrupt vector
> * @bits: number of bits in the interrupt vector
> @@ -132,17 +139,19 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
> goto out;
> iv->bits = bits;
> iv->flags = flags;
> - size = BITS_TO_LONGS(bits) * sizeof...
2019 Jun 11
2
[PATCH v4 4/8] s390/airq: use DMA memory for adapter interrupts
On Tue, 11 Jun 2019 16:27:21 +0200
Halil Pasic <pasic at linux.ibm.com> wrote:
> On Tue, 11 Jun 2019 12:17:21 +0200
> Cornelia Huck <cohuck at redhat.com> wrote:
>
> > On Thu, 6 Jun 2019 13:51:23 +0200
> > Halil Pasic <pasic at linux.ibm.com> wrote:
> >
> > > Protected virtualization guests have to use shared pages for airq
> > >
2019 Jun 11
2
[PATCH v4 4/8] s390/airq: use DMA memory for adapter interrupts
On Tue, 11 Jun 2019 16:27:21 +0200
Halil Pasic <pasic at linux.ibm.com> wrote:
> On Tue, 11 Jun 2019 12:17:21 +0200
> Cornelia Huck <cohuck at redhat.com> wrote:
>
> > On Thu, 6 Jun 2019 13:51:23 +0200
> > Halil Pasic <pasic at linux.ibm.com> wrote:
> >
> > > Protected virtualization guests have to use shared pages for airq
> > >
2019 May 15
0
[PATCH 05/10] s390/cio: introduce DMA pools to cio
...on't run out of bits.
> For single queue devices, this seems like quite a bit of overhead.
>
Nod.
> Are we expecting many devices in use per guest?
This is affect linux in general, not only guest 2 stuff (i.e. we
also waste in vanilla lpar mode). And zpci seems to do at least one
airq_iv_create() per pci function.
>
> >
> > What speaks against cio_dma_pool is that it is slightly more code, and
> > this currently can not be used for very early stuff, which I don't
> > think is relevant.
>
> Unless properly documented, it feels like something you ca...
2019 May 10
3
[PATCH 05/10] s390/cio: introduce DMA pools to cio
On Fri, 10 May 2019 00:11:12 +0200
Halil Pasic <pasic at linux.ibm.com> wrote:
> On Thu, 9 May 2019 12:11:06 +0200
> Cornelia Huck <cohuck at redhat.com> wrote:
>
> > On Wed, 8 May 2019 23:22:10 +0200
> > Halil Pasic <pasic at linux.ibm.com> wrote:
> >
> > > On Wed, 8 May 2019 15:18:10 +0200 (CEST)
> > > Sebastian Ott <sebott
2019 May 10
3
[PATCH 05/10] s390/cio: introduce DMA pools to cio
On Fri, 10 May 2019 00:11:12 +0200
Halil Pasic <pasic at linux.ibm.com> wrote:
> On Thu, 9 May 2019 12:11:06 +0200
> Cornelia Huck <cohuck at redhat.com> wrote:
>
> > On Wed, 8 May 2019 23:22:10 +0200
> > Halil Pasic <pasic at linux.ibm.com> wrote:
> >
> > > On Wed, 8 May 2019 15:18:10 +0200 (CEST)
> > > Sebastian Ott <sebott
2019 May 12
0
[PATCH 05/10] s390/cio: introduce DMA pools to cio
...*bitlock; /* Lock bit mask for the bit vector */
unsigned long *ptr; /* Pointer associated with each bit */
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 7a5c0a0..f11f437 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -136,8 +136,7 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
goto out;
iv->bits = bits;
size = iv_size(bits);
- iv->vector = dma_alloc_coherent(cio_get_dma_css_dev(), size,
- &iv->vector_dma, GFP_KERNEL);
+ iv->vector = cio_dma_zalloc(size);
if (!iv->vector)
goto out_free;
if (fl...
2019 Jun 12
0
[PATCH v4 4/8] s390/airq: use DMA memory for adapter interrupts
...r approach a try.
>
OK. I intend to send out v5 with these changes tomorrow in the
afternoon:
diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
index 89d26e43004d..427b2e24a8ce 100644
--- a/drivers/s390/cio/airq.c
+++ b/drivers/s390/cio/airq.c
@@ -142,7 +142,8 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
size = iv_size(bits);
if (flags & AIRQ_IV_CACHELINE) {
- if ((cache_line_size() * BITS_PER_BYTE) < bits)
+ if ((cache_line_size() * BITS_PER_BYTE) < bits
+ || !airq_iv_cach...
2019 Jun 12
2
[PATCH v4 4/8] s390/airq: use DMA memory for adapter interrupts
...nd to send out v5 with these changes tomorrow in the
> afternoon:
>
> diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c
> index 89d26e43004d..427b2e24a8ce 100644
> --- a/drivers/s390/cio/airq.c
> +++ b/drivers/s390/cio/airq.c
> @@ -142,7 +142,8 @@ struct airq_iv *airq_iv_create(unsigned long bits, unsigned long flags)
> size = iv_size(bits);
>
> if (flags & AIRQ_IV_CACHELINE) {
> - if ((cache_line_size() * BITS_PER_BYTE) < bits)
> + if ((cache_line_size() * BITS_PER_BYTE) < bits
> +...