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 antonb at au1.ibm.com
To improve performance of driver ressource allocation,
replace the vmalloc() call with kmalloc().
Just curious, but how big
/ Kind regards
Stefan Roscher
eHCA/eHEA Linux Driver Development
IBM Systems Technology Group, Systems Software Development / FW I/O
Firmware Entwicklung 2
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
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
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
From: Anton Blanchard antonb at au1.ibm.com
To improve performance of driver ressource allocation,
replace the vmalloc() call with kmalloc().
Signed-off-by: Stefan Roscher stefan.roscher at de.ibm.com
---
drivers/infiniband/hw/ehca/ipz_pt_fn.c |6 +++---
1 files changed, 3 insertions(+), 3
. These changes will improve the performance of creation
of userspace queue pairs.
Signed-off-by: Stefan Roscher stefan.roscher at de.ibm.com
---
drivers/infiniband/hw/ehca/ehca_qp.c | 94 ++--
drivers/infiniband/hw/ehca/hcp_if.c |6 +-
drivers/infiniband/hw/ehca
Signed-off-by: Stefan Roscher stefan.rosc...@de.ibm.com
---
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
.
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(-)
diff --git
will 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_irq.c
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/hw/ehca
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 other
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 firmware team
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 second patch to trigger EOI in case
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 patch
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 pending.
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
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(+), 7
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/drivers
This is necessary because, in a multicore environment, a race between
uverbs async handler and destroy QP could occur.
Signed-off-by: Stefan Roscher stefan.roscher at de.ibm.com
---
We are not sure if this should be fixed in the driver or in uverbs itself.
Roland, what's your opinion about
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 the
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 stefan.roscher at de.ibm.com
---
drivers/infiniband/hw/ehca/ehca_hca.c |7 +++
1 files changed, 3 insertions(+), 4 deletions(-)
diff
Signed-off-by: Stefan Roscher stefan.roscher at de.ibm.com
---
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
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 stefan.roscher at de.ibm.com
---
Reposted based on Roland's comments:
- use atomic_add_unless instead of atomic_read
- inf% changelog increase ;)
drivers
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/infiniband/hw
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
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/hw/ehca/ehca_qp.c
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/infiniband/hw
-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 insertions(+), 4
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/drivers
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