-Original Message-
From: Wood Scott-B07421
Sent: Tuesday, March 31, 2015 3:15 AM
To: Medve Emilian-EMMEDVE1
Cc: devicet...@vger.kernel.org; aflem...@gmail.com; linuxppc-
d...@lists.ozlabs.org; Liberman Igal-B31950
Subject: Re: [PATCH 1/3] powerpc/mpc85xx: Add FMan clock nodes
On
This is Thermal Monitoring Unit for QorIQ platform.
Signed-off-by: Jia Hongtao hongtao@freescale.com
---
.../devicetree/bindings/thermal/qoriq-thermal.txt | 58 +++
arch/powerpc/boot/dts/fsl/qoriq-tmu-t104xsi.dtsi | 82 ++
On Mon, 2015-23-02 at 18:18:20 UTC, Sudeep Holla wrote:
This patch removes the redundant sysfs cacheinfo code by reusing
the newly introduced generic cacheinfo infrastructure through the
commit 246246cbde5e (drivers: base: support cpu cache information
interface to userspace via sysfs)
On 03/26/2015, 10:14 PM, Scott Wood wrote:
Commit bb344ca5b90df6 (powerpc/mpc85xx: Add ranges to etsec2 nodes)
fixes a bug that was exposed by commit 746c9e9f92dd (of/base: Fix
PowerPC address parsing hack). The latter commit was applied to stable
trees, so the former should be as well.
On Fri 27-03-15 15:23:50, Nishanth Aravamudan wrote:
On 27.03.2015 [13:17:59 -0700], Dave Hansen wrote:
On 03/27/2015 12:28 PM, Nishanth Aravamudan wrote:
@@ -2585,7 +2585,7 @@ static bool pfmemalloc_watermark_ok(pg_data_t
*pgdat)
for (i = 0; i = ZONE_NORMAL; i++) {
From: Tang Yuantian yuantian.t...@freescale.com
Otherwise there wil be no SCSI device nodes.
Signed-off-by: Shaohui Xie shaohui@freescale.com
Signed-off-by: Tang Yuantian yuantian.t...@freescale.com
---
arch/powerpc/configs/corenet64_smp_defconfig | 7 +++
1 file changed, 7
Hi Andrew,
On Wed, Apr 1, 2015 at 9:09 AM, Andrew Morton a...@linux-foundation.org wrote:
On Mon, 30 Mar 2015 12:45:32 +1030 Joel Stanley j...@jms.id.au wrote:
The kernel has orderly_poweroff which allows the kernel to initiate a
graceful shutdown of userspace, by running /sbin/poweroff. This
On Tue, 2015-03-31 at 14:06 -0400, Sowmini Varadhan wrote:
Having bravely said that..
the IB team informs me that they see a 10% degradation using
the spin_lock as opposed to the trylock.
one path going forward is to continue processing this patch-set
as is. I can investigate this
On Wed, 01 Apr 2015 10:22:08 +0530 Anshuman Khandual
khand...@linux.vnet.ibm.com wrote:
char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = /sbin/poweroff;
+char reboot_cmd[POWEROFF_CMD_PATH_LEN] = /sbin/reboot;
Should not we declare one more REBOOT_CMD_PATH_LEN to make it cleaner.
It doesn't
On Tue, 31 Mar 2015 22:03:26 -0700 Andrew Morton a...@linux-foundation.org
wrote:
static char reboot_cmd[] = /sbin/reboot;
static const char, actually.
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On Tue, 2015-03-31 at 18:11 +0200, Jan Stancek wrote:
Space allocated for paca is based off nr_cpu_ids,
but pnv_alloc_idle_core_states() iterates paca with
cpu_nr_cores()*threads_per_core, which is using NR_CPUS.
This causes pnv_alloc_idle_core_states() to write over memory,
which is
On Tue, 2015-03-31 at 18:14 +0100, Sudeep Holla wrote:
On 31/03/15 11:56, Michael Ellerman wrote:
On Mon, 2015-23-02 at 18:18:20 UTC, Sudeep Holla wrote:
This patch removes the redundant sysfs cacheinfo code by reusing
the newly introduced generic cacheinfo infrastructure through the
From: Sowmini Varadhan sowmini.varad...@oracle.com
Date: Tue, 31 Mar 2015 21:08:18 -0400
I'm starting to wonder if some approximation of dma premapped
buffers may be needed. Doing a map/unmap on each packet is expensive.
It's much more amortized with smart buffering strategies, which are
On 03/30/2015 07:45 AM, Joel Stanley wrote:
The kernel has orderly_poweroff which allows the kernel to initiate a
graceful shutdown of userspace, by running /sbin/poweroff. This adds
orderly_reboot that will cause userspace to shut itself down by calling
/sbin/reboot.
This will be used for
On 04/01/2015 08:47 AM, Joel Stanley wrote:
Hi Andrew,
On Wed, Apr 1, 2015 at 9:09 AM, Andrew Morton a...@linux-foundation.org
wrote:
On Mon, 30 Mar 2015 12:45:32 +1030 Joel Stanley j...@jms.id.au wrote:
The kernel has orderly_poweroff which allows the kernel to initiate a
graceful
On 03/31/2015 09:01 PM, Benjamin Herrenschmidt wrote:
On Tue, 2015-03-31 at 14:06 -0400, Sowmini Varadhan wrote:
Having bravely said that..
the IB team informs me that they see a 10% degradation using
the spin_lock as opposed to the trylock.
one path going forward is to continue processing
Investigation of multithreaded iperf experiments on an ethernet
interface show the iommu-lock as the hottest lock identified by
lockstat, with something of the order of 21M contentions out of
27M acquisitions, and an average wait time of 26 us for the lock.
This is not efficient. A more scalable
Note that this conversion is only being done to consolidate the
code and ensure that the common code provides the sufficient
abstraction. It is not expected to result in any noticeable
performance improvement, as there is typically one ldc_iommu
per vnet_port, and each one has 8k entries, with a
Addresses BenH comments with one exception: I've left the
IOMMU_POOL_HASH as is, so that powerpc can tailor it to their
convenience.
I've not heard back from the IB folks, but I'm going to make
a judgement call here and go with the spin_lock. *If* they
report some significant benefit from the
On Wed, Apr 1, 2015 at 3:22 PM, Anshuman Khandual
khand...@linux.vnet.ibm.com wrote:
+static int __orderly_poweroff(bool force)
+{
+ int ret;
+
+ ret = run_cmd(reboot_cmd);
Would it be poweroff_cmd instead of reboot_cmd ? Dont see poweroff_cmd
getting used.
Yes, good catch.
From: Sowmini Varadhan
Investigation of multithreaded iperf experiments on an ethernet
interface show the iommu-lock as the hottest lock identified by
lockstat, with something of the order of 21M contentions out of
27M acquisitions, and an average wait time of 26 us for the lock.
This is not
Space allocated for paca is based off nr_cpu_ids,
but pnv_alloc_idle_core_states() iterates paca with
cpu_nr_cores()*threads_per_core, which is using NR_CPUS.
This causes pnv_alloc_idle_core_states() to write over memory,
which is outside of paca array and may later lead to various panics.
On (03/31/15 15:15), David Laight wrote:
I've wondered whether the iommu setup for ethernet receive (in particular)
could be made much more efficient if there were a function that
would unmap one buffer and map a second buffer?
My thought is that iommu pte entry used by the old buffer could
On 3/31/2015 7:54 PM, Scott Wood wrote:
This breaks multiplatform support. You need to determine this at
runtime.
Understood, but I'm unsure of how to do this exactly. Would it be
appropriate to define another array, snum_init_14, with the SNUM values
for the MPC8306 QE, change the minimum
On Thu, 2015-03-26 at 16:42 +1100, Gavin Shan wrote:
The patch adds one more EEH sub-command (VFIO_EEH_PE_INJECT_ERR)
to inject the specified EEH error, which is represented by
(struct vfio_eeh_pe_err), to the indicated PE for testing purpose.
Signed-off-by: Gavin Shan
On (03/31/15 10:40), Sowmini Varadhan wrote:
I've not heard back from the IB folks, but I'm going to make
a judgement call here and go with the spin_lock. *If* they
report some significant benefit from the trylock, probably
need to revisit this (and then probably start by re-exmaining
the
From: Sowmini Varadhan sowmini.varad...@oracle.com
Date: Tue, 31 Mar 2015 14:06:42 -0400
Having bravely said that..
the IB team informs me that they see a 10% degradation using
the spin_lock as opposed to the trylock.
one path going forward is to continue processing this patch-set
as
On 31/03/15 11:56, Michael Ellerman wrote:
On Mon, 2015-23-02 at 18:18:20 UTC, Sudeep Holla wrote:
This patch removes the redundant sysfs cacheinfo code by reusing
the newly introduced generic cacheinfo infrastructure through the
commit 246246cbde5e (drivers: base: support cpu cache
On Sat, 2015-03-28 at 17:59 +0100, Filip Brozovic wrote:
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index c2518cd..f967ff6 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -278,12 +278,17 @@ static void
In iperf experiments running linux as the Tx side (TCP client) with
10 threads results in a severe performance drop when TSO is disabled,
indicating a weakness in the software that can be avoided by using
the scalable IOMMU arena DMA allocation.
Baseline numbers before this patch:
with default
On Tue, Mar 31, 2015 at 01:13:26PM -0600, Alex Williamson wrote:
On Thu, 2015-03-26 at 16:42 +1100, Gavin Shan wrote:
The patch adds one more EEH sub-command (VFIO_EEH_PE_INJECT_ERR)
to inject the specified EEH error, which is represented by
(struct vfio_eeh_pe_err), to the indicated PE for
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table is supported.
Signed-off-by: Alexey
Currently x86, powerpc and soon arm64 use the same two architecture
specific bits for guest debug support for software and hardware
breakpoints. This makes the shared values explicit while leaving the
gate open for another architecture to use some other value if they
really really want to.
On Mon, 30 Mar 2015 12:45:32 +1030 Joel Stanley j...@jms.id.au wrote:
The kernel has orderly_poweroff which allows the kernel to initiate a
graceful shutdown of userspace, by running /sbin/poweroff. This adds
orderly_reboot that will cause userspace to shut itself down by calling
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