Le 08/10/2014 22:03, David Miller a écrit :
From: Christophe Leroy
Date: Tue, 7 Oct 2014 15:04:53 +0200 (CEST)
When using a MPC8xx as a router, 'perf' shows a significant time spent in
fs_enet_interrupt() and fs_enet_start_xmit().
'perf annotate' shows that the time spent in fs_enet_start_xm
On 08/28/2014 03:05 AM, Sukadev Bhattiprolu wrote:
> Anshuman Khandual [khand...@linux.vnet.ibm.com] wrote:
> | This patch enables get and set of transactional memory related register
> | sets through PTRACE_GETREGSET/PTRACE_SETREGSET interface by implementing
> | four new powerpc specific register
> -Original Message-
> From: Wood Scott-B07421
> Sent: Thursday, October 09, 2014 7:48 AM
> To: Jia Hongtao-B38951
> Cc: Guenter Roeck; Benjamin Herrenschmidt; Paul Mackerras; Michael
> Ellerman; linuxppc-dev@lists.ozlabs.org; linux-ker...@vger.kernel.org;
> Jojy G Varghese; Guenter Roeck
From: Ian Munsie
If afu_read() returned due to a signal or the AFU file descriptor being
opened non-blocking it would not call finish_wait() before returning,
which could lead to a crash later when something else wakes up the wait
queue.
This patch restructures the wait logic to ensure that the
On Tue, 2014-10-07 at 22:08 -0500, Jia Hongtao-B38951 wrote:
>
> > -Original Message-
> > From: Wood Scott-B07421
> > Sent: Tuesday, September 30, 2014 2:36 AM
> > To: Guenter Roeck
> > Cc: Benjamin Herrenschmidt; Paul Mackerras; Michael Ellerman; linuxppc-
> > d...@lists.ozlabs.org; linux
From: Christophe Leroy
Date: Tue, 7 Oct 2014 15:04:53 +0200 (CEST)
> When using a MPC8xx as a router, 'perf' shows a significant time spent in
> fs_enet_interrupt() and fs_enet_start_xmit().
> 'perf annotate' shows that the time spent in fs_enet_start_xmit is indeed
> spent
> between spin_unlo
On Wed, 2014-10-08 at 18:46 +0200, leroy christophe wrote:
> Le 07/10/2014 02:19, Scott Wood a écrit :
> > On Sat, 2014-10-04 at 12:15 +0200, christophe leroy wrote:
> >> Le 03/10/2014 22:24, Scott Wood a écrit :
> >>> On Fri, 2014-10-03 at 22:15 +0200, christophe leroy wrote:
> Le 03/10/2014
Aneesh Kumar K.V [aneesh.ku...@linux.vnet.ibm.com] wrote:
| "Aneesh Kumar K.V" writes:
|
| > CC arch/powerpc/util/skip-callchain-idx.o
| > arch/powerpc/util/skip-callchain-idx.c: In function ‘check_return_reg’:
| > arch/powerpc/util/skip-callchain-idx.c:55:3: error: implicit declaration o
Anshuman Khandual [khand...@linux.vnet.ibm.com] wrote:
| On 08/28/2014 03:05 AM, Sukadev Bhattiprolu wrote:
| >
| > I see these in arch/powerpc/include/asm/processor.h
| >
| > #ifdef CONFIG_PPC64
| > unsigned long dscr;
| > int dscr_inherit;
| > unsigned lon
Le 07/10/2014 02:19, Scott Wood a écrit :
On Sat, 2014-10-04 at 12:15 +0200, christophe leroy wrote:
Le 03/10/2014 22:24, Scott Wood a écrit :
On Fri, 2014-10-03 at 22:15 +0200, christophe leroy wrote:
Le 03/10/2014 16:44, Mark Brown a écrit :
On Fri, Oct 03, 2014 at 02:56:09PM +0200, Christ
On Wed, 2014-10-08 at 18:21 +0200, leroy christophe wrote:
> Le 07/10/2014 02:15, Scott Wood a écrit :
> > On Sat, 2014-10-04 at 14:02 +0200, christophe leroy wrote:
> >> What should it look like if that offset had to be in the device tree ?
> > If the offset is not relocatable or discoverable, it
Le 07/10/2014 02:15, Scott Wood a écrit :
On Sat, 2014-10-04 at 14:02 +0200, christophe leroy wrote:
Le 03/10/2014 22:29, Scott Wood a écrit :
On Fri, 2014-10-03 at 18:49 +0200, Christophe Leroy wrote:
On CPM1, the SPI parameter RAM has a default location. In fsl_spi_cpm_get_pram()
there was
On 08/28/2014 03:05 AM, Sukadev Bhattiprolu wrote:
>
> Anshuman Khandual [khand...@linux.vnet.ibm.com] wrote:
> | This patch enables get and set of miscellaneous registers through ptrace
> | PTRACE_GETREGSET/PTRACE_SETREGSET interface by implementing new powerpc
> | specific register set REGSET_MI
On 10/08/2014 12:37 AM, Heinz Wrobel wrote:
what if your tb wraps during the test?
Per the Power ISA, Time Base is 64 bits, monotonically increasing, and
is writable only in hypervisor state. To my understanding, it is set to
zero at boot (although this is not prescribed).
Also, as noted
- Guenter Roeck 写道：
> pm_power_off is defined for all architectures. Move it to common code.
>
> Have all architectures call do_kernel_poweroff instead of pm_power_off.
> Some architectures point pm_power_off to machine_power_off. For those,
> call do_kernel_poweroff from machine_power_off i
If afu_read() returned due to a signal or the AFU file descriptor being
opened non-blocking it would not call finish_wait() before returning,
which could lead to a crash later when something else wakes up the wait
queue.
This patch restructures the wait logic to ensure that the cleanup is
done cor
Excerpts from Michael Neuling's message of 2014-10-08 19:55:02 +1100:
> +static ssize_t afu_read(struct file *file, char __user *buf, size_t count,
> +loff_t *off)
...
> +for (;;) {
> +prepare_to_wait(&ctx->wq, &wait, TASK_INTERRUPTIBLE);
> +if (ctx_event_pending(ctx
On 10/08/2014 08:22 AM, Michael Ellerman wrote:
> On Tue, 2014-07-10 at 19:13:24 UTC, Paul Clarke wrote:
>> The POWER ISA defines an always-running decrementer which can be used
>> to schedule interrupts after a certain time interval has elapsed.
>> The decrementer counts down at the same frequency
"Aneesh Kumar K.V" writes:
> CC arch/powerpc/util/skip-callchain-idx.o
> arch/powerpc/util/skip-callchain-idx.c: In function ‘check_return_reg’:
> arch/powerpc/util/skip-callchain-idx.c:55:3: error: implicit declaration of
> function ‘pr_debug’ [-Werror=implicit-function-declaration]
>
From: Ian Munsie
This documentation gives an overview of the hardware architecture, userspace
APIs via /dev/cxl/afuM.N and the syfs files. It also adds a MAINTAINERS file
entry for cxl.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
Documentation/ABI/testing/sysfs-class-cxl | 13
From: Ian Munsie
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
drivers/misc/cxl/Kconfig | 17 +
drivers/misc/cxl/Makefile | 2 ++
2 files changed, 19 insertions(+)
diff --git a/drivers/misc/cxl/Kconfig b/drivers/misc/cxl/Kconfig
index 5cdd319..a990b39 100644
-
From: Ian Munsie
This adds a header file for use by userspace programs wanting to interact with
the kernel cxl driver. It defines structs and magic numbers required for
userspace to interact with devices in /dev/cxl/afuM.N.
Further documentation on this interface is added in a subsequent patch
From: Ian Munsie
This adds the base cxl support that cannot be built as a module. Specifically
it adds the cxl callbacks that are called from the core powerpc mm code which
must always exist irrespective of if the cxl module is loaded or not. This is
similar to how cell works with CONFIG_SPU_BASE
From: Ian Munsie
This adds hooks into the core powerpc mm code for cxl.
The core powerpc code sometimes uses local tlbie. Unfortunately this won't
work with the current cxl driver as it relies on snooping tlbie broadcasts.
The cxl hardware can have TLB entries invalidated via MMIO but this is n
From: Ian Munsie
This adds the OPAL call to change a PHB into cxl mode.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
arch/powerpc/include/asm/opal.h| 2 ++
arch/powerpc/platforms/powernv/opal-wrappers.S | 1 +
2 files changed, 3 insertions(+)
diff --git a/arch
From: Ian Munsie
This adds a new function hash_page_mm() based on the existing hash_page().
This version allows any struct mm to be passed in, rather than assuming
current. This is useful for servicing co-processor faults which are not in the
context of the current running process.
We need to be
From: Ian Munsie
This adds a number of functions for allocating IRQs under powernv PCIe for cxl.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
arch/powerpc/include/asm/pnv-pci.h| 31 ++
arch/powerpc/platforms/powernv/pci-ioda.c | 154 ++
From: Ian Munsie
This new header adds callbacks and structs needed by the rest of the kernel to
hook into the cxl infrastructure.
This adds the cxl_ctx_in_use() function for use in the mm code to see if any
cxl contexts are currently in use. This is used by the tlbie() to determine if
it can do
From: Ian Munsie
Some of the MSI IRQ code in pnv_pci_ioda_msi_setup() is generically useful so
split it out.
This will be used by some of the cxl PCIe code later.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
arch/powerpc/platforms/powernv/pci-ioda.c | 42 ++---
From: Ian Munsie
Export mmu_kernel_ssize and mmu_linear_psize. These are needed by the cxl
driver which has it's own MMU. To setup the MMU cxl needs access to these.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
arch/powerpc/mm/hash_utils_64.c | 2 ++
1 file changed, 2 insert
From: Ian Munsie
Currently msi_bitmap_alloc_hwirqs() will round up any IRQ allocation requests
to the nearest power of 2. eg. ask for 5 IRQs and you'll get 8. This wastes a
lot of IRQs which can be a scarce resource.
For cxl we may require multiple IRQs for every context that is attached to the
From: Ian Munsie
This moves spu_flush_all_slbs() into a generic call copro_flush_all_slbs().
This will be useful when we add cxl which also needs a similar SLB flush call.
Signed-off-by: Ian Munsie
Signed-off-by: Michael Neuling
---
arch/powerpc/include/asm/copro.h | 6 ++
arch/powerpc/
From: Ian Munsie
__spu_trap_data_seg() currently contains code to determine the VSID and ESID
required for a particular EA and mm struct.
This code is generically useful for other co-processors. This moves the code of
the cell platform so it can be used by other powerpc code. It also adds 1TB
se
From: Ian Munsie
Currently spu_handle_mm_fault() is in the cell platform.
This code is generically useful for other non-cell co-processors on powerpc.
This patch moves this function out of the cell platform into arch/powerpc/mm so
that others may use it.
Signed-off-by: Ian Munsie
Signed-off-b
This is the latest version of the cxl driver. Change log below:
v4:
- Updates based on comments from mpe (offline and online).
- Refactor the sstp lock to be an entry lock.
- Fixed error paths on new status_mutex in start_work
- added some missing include files
- moved associating pid/mm fro
On 三, 2014-10-01 at 15:10 +1000, Anton Blanchard wrote:
> Li Zhong points out an issue with our current __get_SP()
> implementation. If ftrace function tracing is enabled (ie -pg
> profiling using _mcount) we spill a stack frame on 64bit all the
> time.
>
> If a function calls __get_SP() and later
On Tue, Oct 07, 2014 at 07:28:10AM +0200, Guenter Roeck wrote:
> pm_power_off is defined for all architectures. Move it to common code.
>
> Have all architectures call do_kernel_poweroff instead of pm_power_off.
> Some architectures point pm_power_off to machine_power_off. For those,
> call do_ker
At Wed, 08 Oct 2014 16:28:16 +1100,
Benjamin Herrenschmidt wrote:
>
> On Tue, 2014-10-07 at 19:47 -0400, Alex Deucher wrote:
> > > This moves the setting of the quirk flag to the audio driver.
> > >
> > > While recent ASICs have that problem fixed, they don't seem to
> > > be listed in the PCI IDs
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