On Tuesday 28 April 2009 05:12:51 pm Dave Hansen wrote:
> On Tue, 2009-04-21 at 17:16 +0200, Stefan Roscher wrote:
> > From: Anton Blanchard
> >
> > To improve performance of driver ressource allocation,
> > replace the vmalloc() call with kmalloc().
>
> Ju
On Wednesday 22 April 2009 04:10:18 pm michael wrote:
> Hi,
>
> I don't take the point, if it is not import use the vmalloc. Why you try
> with a kmalloc
> alloc first? and why do not use kzalloc?
Because kmalloc() is faster than vmalloc() causing a huge performance win
when someone allocates a
In case of large queue pairs there is the possibillity of allocation failures
due to memory fragmentationo with kmalloc().To ensure the memory is allocated
even
if kmalloc() can not find chunks which are big enough, we try to allocate the
memory
with vmalloc().
Signed-off-by: Stefan Roscher
rüßen / Kind regards
Stefan Roscher
eHCA/eHEA Linux Driver Development
IBM Systems &Technology Group, Systems Software Development / FW I/O
Firmware Entw
Signed-off-by: Stefan Roscher
---
drivers/infiniband/hw/ehca/ehca_main.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c
b/drivers/infiniband/hw/ehca/ehca_main.c
index 368311c..85905ab 100644
--- a/drivers/infiniband/hw/ehca
. These changes will improve the performance of creation
of userspace queue pairs.
Signed-off-by: Stefan Roscher
---
drivers/infiniband/hw/ehca/ehca_qp.c | 94 ++--
drivers/infiniband/hw/ehca/hcp_if.c |6 +-
drivers/infiniband/hw/ehca/hcp_if.h |2 +-
drivers
From: Anton Blanchard
To improve performance of driver ressource allocation,
replace the vmalloc() call with kmalloc().
Signed-off-by: Stefan Roscher
---
drivers/infiniband/hw/ehca/ipz_pt_fn.c |6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw
This patchset contains performance improvments for ehca driver.
It will skip code which is not necessary for userspace queue pairs
and will replace vmalloc() calls with kmalloc().
Because of this fundamental code change we will also increment the version
number.
They should apply cleanly against
.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_classes.h |7 +++
drivers/infiniband/hw/ehca/ehca_qp.c | 12 ++--
drivers/infiniband/hw/ehca/ehca_reqs.c| 13 ++---
3 files changed, 19 insertions(+), 13 deletions(-)
This fix enables ehca device driver to generate flush workcompletions even if
the application don't request work completions for all work requests. The
current implementation of ehca will generate flush work completions for
the wrong work requests if an application uses non signaled work completio
apply cleanly on top of 2.6.28 git tree.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_irq.c |7 +--
drivers/infiniband/hw/ehca/ehca_qp.c |5 +
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca
parameters are now used as initial values for those variables.
If a user selects an invalid number of CQs or QPs we don't print an error any
longer, instead we will inform the user with a warning and set the values to
the respective maximum supported by the HW.
Signed-off-by: Stefan Roscher &l
notifier to the ehca device driver and if a
request
for dynamic memory add or remove comes in, ehca will always reject it.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
diff -Nurp linux-2.6.27-rc6-7/drivers/infiniband/hw/ehca/ehca_main.c
linux-2.6.27-rc6-7.new/drivers/infiniband/h
During corner case testing, we noticed that some versions of ehca
do not properly transition to interrupt done in special load situations.
This can be resolved by periodically triggering EOI through H_EOI,
if eqes are pending.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
As fi
Hi Roland,
On Tuesday 10 June 2008 18:18:50 Roland Dreier wrote:
> > > So just to be clear: this is a workaround for a hardware/firmware bug?
>
> > Yes it is.
>
> OK, so paulus et al... does it seem like a good approach to call H_EOI
> from driver code (given that this driver makes tons of oth
On Tuesday 10 June 2008 16:52:57 Roland Dreier wrote:
> > During corner case testing, we noticed that some versions of ehca
> > do not properly transition to interrupt done in special load situations.
> > This can be resolved by periodically triggering EOI through H_EOI,
> > if eqes are pendi
During corner case testing, we noticed that some versions of ehca
do not properly transition to interrupt done in special load situations.
This can be resolved by periodically triggering EOI through H_EOI,
if eqes are pending.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
This
On Tuesday 10 June 2008 00:28:16 Paul Mackerras wrote:
> Stefan Roscher writes:
>
> > This patchset contains two changes for IB/ehca and ibmebus.
> >
> > The first patch enables ibmebus_request_irq() to optionally return the
> > IRQ number, which is used by the
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_classes.h |1 +
drivers/infiniband/hw/ehca/ehca_eq.c |6 --
drivers/infiniband/hw/ehca/ehca_main.c| 12 ++--
3 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/d
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/ibmebus.c|5 -
drivers/infiniband/hw/ehca/ehca_eq.c |4 ++--
drivers/net/ehea/ehea_main.c |6 +++---
include/asm-powerpc/ibmebus.h|2 +-
4 files changed, 10 insertions
This patchset contains two changes for IB/ehca and ibmebus.
The first patch enables ibmebus_request_irq() to optionally return the
IRQ number, which is used by the second patch to trigger EOI in case of
lost interrupts.
They should apply cleanly against 2.6.26 git tree.
Thanks
Stefan
_
On Wednesday 07 May 2008 17:32:03 Roland Dreier wrote:
> > We are not sure if this should be fixed in the driver or in uverbs itself.
> > Roland, what's your opinion about this?
>
> Would be nice to be able to fix it in uverbs but I don't see how. In
> particular a kernel consumer has to have t
This is necessary because, in a multicore environment, a race between
uverbs async handler and destroy QP could occur.
Signed-off-by: Stefan Roscher
---
We are not sure if this should be fixed in the driver or in uverbs itself.
Roland, what's your opinion about this?
drivers/infiniba
Also remove duplicate assignment of local_ca_ack_delay
and change min_t check for local_ca_ack_delay to u8 instead of int.
Signed-off-by: Stefan Roscher
---
drivers/infiniband/hw/ehca/ehca_hca.c |7 +++
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw
e QPs and CQs to a customizable max count,
and determining EQ size based on these counts and a worst-case assumption.
Signed-off-by: Stefan Roscher
---
Reposted based on Roland's comments:
- use atomic_add_unless instead of atomic_read
- inf% changelog increase ;)
drivers/infiniba
Signed-off-by: Stefan Roscher
---
drivers/infiniband/hw/ehca/ehca_classes.h |5
drivers/infiniband/hw/ehca/ehca_cq.c | 10
drivers/infiniband/hw/ehca/ehca_main.c| 36 +++-
drivers/infiniband/hw/ehca/ehca_qp.c | 10
4 files
Also, introduce a few inline helper functions to make the code more readable.
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_hca.c | 128
1 files changed, 80 insertions(+), 48 deletions(-)
diff --git a/drivers/infi
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_qp.c | 14 +-
1 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c
b/drivers/infiniband/hw/ehca/ehca_qp.c
index d8c1c22..6efda3d 100644
--- a/d
From: Joachim Fenkes <[EMAIL PROTECTED]>
Date: Wed, 8 Aug 2007 19:51:30 +0200
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_irq.c | 48 +---
1 files changed, 31 insertions(+), 17 deletions(-)
diff --git a/driver
gned-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_classes.h |4 +++-
drivers/infiniband/hw/ehca/ehca_cq.c |2 ++
drivers/infiniband/hw/ehca/ehca_qp.c |2 ++
drivers/infiniband/hw/ehca/ehca_uverbs.c |6 +++---
4 files changed, 10
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_cq.c |7 ++-
drivers/infiniband/hw/ehca/ehca_qp.c |6 ++
drivers/infiniband/hw/ehca/ehca_uverbs.c | 22 +++---
3 files changed, 23 insertions(+), 12 deletions(-)
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/hcp_if.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c
b/drivers/infiniband/hw/ehca/hcp_if.c
index 24f4541..8534061 100644
--- a/drivers/infi
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_qp.c | 10 ++
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c
b/drivers/infiniband/hw/ehca/ehca_qp.c
index cfa83fa..13b61c3 100644
--- a/d
Signed-off-by: Stefan Roscher <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ehca/ehca_qp.c |7 +++
drivers/infiniband/hw/ehca/ipz_pt_fn.c |3 ++-
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c
b/drivers/infiniband/h
Here is a patch set against Roland's git, branch for-2.6.23 for ehca.
It enables userspace support for small QP feature and make some fixes for it.
Also there is add the mapping of 4k firmware context to user space.
They are in details:
[1/7] add support for userspace small queues and make some f
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