On 31/05/16 16:26, Aneesh Kumar K.V wrote:
> LPCR cannot be updated when running in guest mode.
>
> Signed-off-by: Aneesh Kumar K.V
> ---
> arch/powerpc/mm/pgtable-radix.c | 23 ++-
> 1 file changed, 10 insertions(+), 13 deletions(-)
>
> diff --git a/arch/powerpc/mm/pgtabl
On 31/05/16 20:59, Aneesh Kumar K.V wrote:
> This switch few of the page table accessor to use the __raw variant
> and does the cpu to big endian conversion of constants. This helps in
> generating better code.
>
> For ex: a pgd_none(pgd) check with and without fix is listed below
>
> Without f
This routine can't fail unless the frequency table is invalid and
doesn't contain any valid entries.
Make it return the index and WARN() in case it is used for an invalid
table.
Signed-off-by: Viresh Kumar
---
Documentation/cpu-freq/cpu-drivers.txt | 7 +++
drivers/cpufreq/amd_freq_sensiti
The policy already has this pointer set, use it instead.
Signed-off-by: Viresh Kumar
---
Documentation/cpu-freq/cpu-drivers.txt | 1 -
drivers/cpufreq/amd_freq_sensitivity.c | 3 +--
drivers/cpufreq/cpufreq.c | 4 ++--
drivers/cpufreq/cpufreq_ondemand.c | 11 +--
driv
On 02/06/16 19:44, Aneesh Kumar K.V wrote:
> Semantic Issue: comparison of constant 18446744073709551615 with
> expression of type 'unsigned int' is always false.
>
> Signed-off-by: Aneesh Kumar K.V
> ---
> arch/powerpc/mm/tlb-radix.c | 8
> 1 file changed, 4 insertions(+), 4 deletion
On Fri, 2016-06-03 at 12:10 +0800, xinhui wrote:
> On 2016年06月03日 09:32, Benjamin Herrenschmidt wrote:
> > On Fri, 2016-06-03 at 11:32 +1000, Benjamin Herrenschmidt wrote:
> >> On Thu, 2016-06-02 at 17:22 +0800, Pan Xinhui wrote:
> >>>
> >>> Base code to enable qspinlock on powerpc. this patch add
On 2016年06月03日 09:32, Benjamin Herrenschmidt wrote:
On Fri, 2016-06-03 at 11:32 +1000, Benjamin Herrenschmidt wrote:
On Thu, 2016-06-02 at 17:22 +0800, Pan Xinhui wrote:
Base code to enable qspinlock on powerpc. this patch add some
#ifdef
here and there. Although there is no paravirt related
There is an ordering issue with spin_unlock_wait() on powerpc, because
the spin_lock primitive is an ACQUIRE and an ACQUIRE is only ordering
the load part of the operation with memory operations following it.
Therefore the following event sequence can happen:
CPU 1 CPU 2
Benjamin Herrenschmidt writes:
> On Thu, 2016-06-02 at 15:16 +0530, Aneesh Kumar K.V wrote:
>>
>>
>> +/*
>> + * flush the page walk cache for the address
>> + */
>> +void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address)
>> +{
>> + struct mm_struct *mm = tlb->mm;
>> +
Hi, Alex
On 2016/6/2 21:11, Alex Williamson wrote:
AFAICT, you posted this *3* days ago, has something changed here or is
this just expedited nagging for review? This also depends on a
non-upstream series and crosses multiple functional areas, all of which
make it difficult for maintainers to
On 01/06/16 15:28, Michael Neuling wrote:
> On Tue, 2016-05-31 at 17:16 +1000, Oliver O'Halloran wrote:
>> POWER ISA v3 adds large decrementer (LD) mode of operation which
>> increases
>> the size of the decrementer register from 32 bits to an implementation
>> defined with of up to 64 bits.
>>
>
On Thu, 2016-06-02 at 15:16 +0530, Aneesh Kumar K.V wrote:
>
>
> +/*
> + * flush the page walk cache for the address
> + */
> +void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address)
> +{
> + struct mm_struct *mm = tlb->mm;
> + /*
> + * flush the page table walk c
On Thu, 2016-06-02 at 15:10 +0530, Aneesh Kumar K.V wrote:
> We need to se HR bit LPCR for radix partitions.
Again (:-) please a better changeset description. In fact this
one is actually incorrect, this is not a partition.
Something like "The processor requires the MMU mode (radix vs. ha
On 1 June 2016 at 18:26, Anshuman Khandual
wrote:
> On 05/31/2016 04:42 AM, Michael Ellerman wrote:
> > Hi Laurent,
> >
> > Sorry no. My next branch closed for 4.7 about 3 weeks ago.
> >
> > This series has been blocked for a long time on the gdb support, but
> that is
> > now working. However it
On Wed, 2016-06-01 at 16:23 +1000, Michael Neuling wrote:
> FWIW you can use:
> andis. reg,reg,(LPCR_LD)@ha
@h in that case. Probably the same result but technically @ha is for
arithmetic operations.
Cheers,
Ben.
___
Linuxppc-dev mailing list
L
Copy documentation abstract about each DMA attribute from
Documentation/DMA-attributes.txt to the place with declaration.
Suggested-by: Christoph Hellwig
Signed-off-by: Krzysztof Kozlowski
---
include/linux/dma-mapping.h | 33 +
1 file changed, 33 insertions(+)
After switching DMA attributes to unsigned long it is easier to just
compare the bits.
Signed-off-by: Krzysztof Kozlowski
---
Documentation/DMA-API.txt | 4 +--
arch/arc/mm/dma.c | 4 +--
arch/arm/mm/dma-mapping.c | 36
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/xtensa/kernel/pci-dma.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/unicore32/mm/dma-swiotlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/unicore32/mm/dma-swiotlb.c b/arch/unicore32/mm/dma-
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/tile/kernel/pci-dma.c | 28 ++--
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/arch/tile/kernel/pci-dma.c b/arch/
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/sparc/kernel/iommu.c | 12 ++--
arch/sparc/kernel/ioport.c| 24
arch/sparc/kernel/pci_sun4v.c | 12 ++--
3
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/sh/include/asm/dma-mapping.h | 4 ++--
arch/sh/kernel/dma-nommu.c| 4 ++--
arch/sh/mm/consistent.c | 4 ++--
3 files changed, 6 insertion
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/s390/include/asm/dma-mapping.h | 1 -
arch/s390/pci/pci_dma.c | 23 ---
2 files changed, 12 insertions(+), 12 deletions(-)
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/misc/mic/host/mic_boot.c | 20 ++--
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/misc/mic/host/mic_boot.c b/d
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/parisc/kernel/pci-dma.c | 16
drivers/parisc/ccio-dma.c| 16
drivers/parisc/sba_iommu.c | 16
3 fi
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/openrisc/kernel/dma.c | 17 -
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/arch/openrisc/kernel/dma.c b/arch/openrisc/kern
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/nios2/mm/dma-mapping.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/nios2/mm/dma-mapping.c b/arch/nios2/mm/dma-map
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/mn10300/mm/dma-alloc.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/mn10300/mm/dma-alloc.c b/arch/mn10300/mm/dma-alloc.
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/mips/cavium-octeon/dma-octeon.c | 8
arch/mips/loongson64/common/dma-swiotlb.c | 10 +-
arch/mips/mm/dma-default.c|
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/microblaze/include/asm/dma-mapping.h | 1 -
arch/microblaze/kernel/dma.c | 12 ++--
2 files changed, 6 insertions(+), 7 deletions(-)
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/metag/kernel/dma.c | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c
ind
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/m68k/kernel/dma.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c
index cb
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/ia64/hp/common/sba_iommu.c | 22 +++---
arch/ia64/include/asm/machvec.h | 1 -
arch/ia64/kernel/pci-swiotlb.c | 4 ++--
arch/ia64/sn/pci
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/hexagon/include/asm/dma-mapping.h | 1 -
arch/hexagon/kernel/dma.c | 8
2 files changed, 4 insertions(+), 5 deletions(-)
diff --git
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/h8300/kernel/dma.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/h8300/kernel/dma.c b/arch/h8300/kernel/dma.c
index eeb1
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/iommu/intel-iommu.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-i
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/x86/include/asm/dma-mapping.h | 5 ++---
arch/x86/include/asm/swiotlb.h | 4 ++--
arch/x86/include/asm/xen/page-coherent.h | 9 -
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/video/fbdev/omap2/omapfb/omapfb-main.c | 12 ++--
drivers/video/fbdev/omap2/omapfb/omapfb.h | 3 +--
2 files changed, 7 insertions(+), 8 d
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/powerpc/include/asm/dma-mapping.h| 7 +++
arch/powerpc/include/asm/iommu.h | 10 +-
arch/powerpc/kernel/dma-iommu.c | 1
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
include/linux/swiotlb.h | 10 +-
lib/swiotlb.c | 13 +++--
2 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/include/li
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/xen/swiotlb-xen.c | 14 +++---
include/xen/swiotlb-xen.h | 12 ++--
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/dri
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/media/platform/sti/bdisp/bdisp-hw.c| 26 +++---
drivers/media/v4l2-core/videobuf2-dma-contig.c | 30 +++---
driv
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/iommu/amd_iommu.c | 12 ++--
drivers/iommu/dma-iommu.c | 6 +++---
include/linux/dma-iommu.h | 6 +++---
3 files changed, 12 insertions(+), 12
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/infiniband/core/umem.c | 7 +++
include/rdma/ib_verbs.h| 8
2 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 17 +++--
drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 2 +-
2 files changed, 8 insertions(+), 11 de
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/nouveau/nvkm/subdev/instmem/gk20a.c | 13 ++---
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nv
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/msm/msm_drv.c | 13 ++---
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/mediatek/mtk_drm_gem.c | 13 ++---
drivers/gpu/drm/mediatek/mtk_drm_gem.h | 2 +-
2 files changed, 7 insertions(+), 8 deletions(-)
dif
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 +-
drivers/gpu/drm/exynos/exynos_drm_g2d.c | 12 +---
drivers/gpu/drm/exynos/exynos_drm_gem.c | 20 +
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/frv/mb93090-mb00/pci-dma-nommu.c | 8
arch/frv/mb93090-mb00/pci-dma.c | 9 -
2 files changed, 8 insertions(+), 9 deletions(-)
diff
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/cris/arch-v32/drivers/pci/dma.c | 9 -
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c
b/arch/c
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/c6x/include/asm/dma-mapping.h | 4 ++--
arch/c6x/kernel/dma.c | 9 -
arch/c6x/mm/dma-coherent.c | 4 ++--
3 files changed, 8 i
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/blackfin/kernel/dma-mapping.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/blackfin/kernel/dma-mapping.c
b/arch/blackf
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/avr32/mm/dma-coherent.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-cohere
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/arm64/mm/dma-mapping.c | 57 +++--
1 file changed, 29 insertions(+), 28 deletions(-)
diff --git a/arch/arm64/mm/dm
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/arm/common/dmabounce.c | 4 +-
arch/arm/include/asm/dma-mapping.h | 13 +++--
arch/arm/include/asm/xen/page-coherent.h | 16 +++
ar
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/arc/mm/dma.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c
index 73d7e4c75b7d..3d1f467d
Split out subsystem specific changes for easier reviews. This will be
squashed with main commit.
Signed-off-by: Krzysztof Kozlowski
---
arch/alpha/include/asm/dma-mapping.h | 2 --
arch/alpha/kernel/pci-noop.c | 2 +-
arch/alpha/kernel/pci_iommu.c| 12 ++--
3 files chan
The dma-mapping core and the implementations do not change the
DMA attributes passed by pointer. Thus the pointer can point to const
data. However the attributes do not have to be a bitfield. Instead
unsigned long will do fine:
1. This is just simpler. Both in terms of reading the code and sett
Hard-coded value of DMA_ATTR_WEAK_ORDERING is then compared with the
symbol. This will stop matching if the value of symbol is changed (when
switching DMA attributes to unsigned long).
Signed-off-by: Krzysztof Kozlowski
---
arch/powerpc/platforms/cell/iommu.c | 2 +-
1 file changed, 1 insertion
allyesconfigs: ARM,
ARM64, i386, x86_64 and powerpc. Please provide reviewes and tests
for other platforms.
Rebased on next-20160602.
For easier testing the patchset is available here:
repo: https://github.com/krzk/linux
branch: for-next/dma-attrs-const-v3
I didn't CC all the maintainers..
From: Zhao Qiang
Date: Thu, 2 Jun 2016 09:44:58 +0800
> +static int ucc_get_tdm_sync_source(u32 tdm_num, enum qe_clock clock,
> +enum comm_dir mode)
> +{
> + int source = -EINVAL;
> +
> + if (mode == COMM_DIR_RX && clock == QE_RSYNC_PIN) {
> + s
On Tue, 31 May 2016, Hugh Dickins wrote:
>
> But all my evidence so far is that it is now right: I'll continue
> testing v4.6+fix on a couple of loads until this evening: all is
> well so far. And then switch to testing v4.5+fix on those loads
> for another day and a half.
I'm glad to confirm: y
This routine can't fail unless the frequency table is invalid and
doesn't contain any valid entries.
Make it return the index and WARN() in case it is used for an invalid
table.
Signed-off-by: Viresh Kumar
---
Documentation/cpu-freq/cpu-drivers.txt | 7 +++
drivers/cpufreq/amd_freq_sensiti
The policy already has this pointer set, use it instead.
Signed-off-by: Viresh Kumar
---
Documentation/cpu-freq/cpu-drivers.txt | 1 -
drivers/cpufreq/amd_freq_sensitivity.c | 3 +--
drivers/cpufreq/cpufreq.c | 4 ++--
drivers/cpufreq/cpufreq_ondemand.c | 11 +--
driv
AFAICT, you posted this *3* days ago, has something changed here or is
this just expedited nagging for review? This also depends on a
non-upstream series and crosses multiple functional areas, all of which
make it difficult for maintainers to actually do anything with this
series. Thanks,
Alex
If hardware supports stop state, use the deepest stop state when
the cpu is offlined.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Shreyas B. Prabhu
---
- No changes since v1
arch/powerpc/platforms/powernv/idle.c| 15 +--
arch/powerpc/platforms/powernv/powernv.h | 1 +
arch/
POWER ISA v3 defines a new idle processor core mechanism. In summary,
a) new instruction named stop is added.
b) new per thread SPR named PSSCR is added which controls the behavior
of stop instruction.
Supported idle states and value to be written to PSSCR register to enter
any idle stat
Use cpuidle's CPUIDLE_STATE_MAX macro instead of powernv specific
MAX_POWERNV_IDLE_STATES.
Cc: Rafael J. Wysocki
Cc: Daniel Lezcano
Cc: linux...@vger.kernel.org
Suggested-by: Daniel Lezcano
Signed-off-by: Shreyas B. Prabhu
---
- New in v5
drivers/cpuidle/cpuidle-powernv.c | 4 +---
1 file c
POWER ISA v3 defines a new idle processor core mechanism. In summary,
a) new instruction named stop is added. This instruction replaces
instructions like nap, sleep, rvwinkle.
b) new per thread SPR named Processor Stop Status and Control Register
(PSSCR) is added which controls th
pnv_init_idle_states discovers supported idle states from the
device tree and does the required initialization. Set power_save
function pointer only after this initialization is done
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Shreyas B. Prabhu
---
- No changes since v1
arch/powerpc/platform
Create a function for saving SPRs before entering deep idle states.
This function can be reused for POWER9 deep idle states.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Shreyas B. Prabhu
---
- No changes from v3
Changes in v3:
=
- Newly added in v3
arch/powerpc/kernel/idle_pow
pnv_powersave_common does common steps needed before entering idle
state and eventually changes MSR to MSR_IDLE and does rfid to
pnv_enter_arch207_idle_mode.
Move the updation of HSTATE_HWTHREAD_STATE to pnv_powersave_common
from pnv_enter_arch207_idle_mode and make it more generic by passing the
Functions like power7_wakeup_loss, power7_wakeup_noloss,
power7_wakeup_tb_loss are used by POWER7 and POWER8 hardware. They can
also be used by POWER9. Hence rename these functions hardware agnostic
names.
Suggested-by: Gautham R. Shenoy
Signed-off-by: Shreyas B. Prabhu
---
- No changes in v5
idle_power7.S handles idle entry/exit for POWER7, POWER8 and in next
patch for POWER9. Rename the file to a non-hardware specific
name.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Shreyas B. Prabhu
---
- No changes from v3
Changes in v3:
==
- Instead of moving few common functio
In the current code, when the thread wakes up in reset vector, some
of the state restore code and check for whether a thread needs to
branch to kvm is duplicated. Reorder the code such that this
duplication is avoided.
At a higher level this is what the change looks like-
Before this patch -
powe
Signed-off-by: Shreyas B. Prabhu
---
-No changes in v5
Changes in v4
=
- New in v4
arch/powerpc/kernel/idle_power7.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/idle_power7.S
b/arch/powerpc/kernel/idle_power7.S
index 470ceeb..705c867 1006
POWER ISA v3 defines a new idle processor core mechanism. In summary,
a) new instruction named stop is added. This instruction replaces
instructions like nap, sleep, rvwinkle.
b) new per thread SPR named PSSCR is added which controls the behavior
of stop instruction.
On Thu, 2016-06-02 at 17:13 +0530, Viresh Kumar wrote:
> On 02-06-16, 21:37, Michael Ellerman wrote:
> > On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote:
> > > On 02-06-16, 21:08, Michael Ellerman wrote:
> > > > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote:
> > > >
> > > > > The pol
On Thu, 2016-06-02 at 22:02 +1000, Michael Ellerman wrote:
> +
> +int test_futex(void)
> +{
> + struct timespec ts_start, ts_end;
> +unsigned long i = ITERATIONS;
> +
> + clock_gettime(CLOCK_MONOTONIC, &ts_start);
> +
> +while (i--) {
> +unsigned int addr = 0
These are useful little loops for smoke testing performance.
Signed-off-by: Michael Ellerman
---
.../selftests/powerpc/benchmarks/.gitignore| 2 ++
.../testing/selftests/powerpc/benchmarks/Makefile | 2 +-
.../selftests/powerpc/benchmarks/futex_bench.c | 42 ++
Export cpu_to_core_id(). This will be used by the lpfc driver.
This enables topology_core_id() from (defined
to cpu_to_core_id() in arch/powerpc/include/asm/topology.h) to be
used by (non-builtin) modules.
That is arch-neutral, already used by eg, drivers/base/topology.c,
but it is builtin (ob
On Wednesday, June 1, 2016 8:24:20 PM CEST Scott Wood wrote:
> On Mon, 2016-05-30 at 15:18 +0200, Arnd Bergmann wrote:
> > All users of this driver are PowerPC specific and the header file
> > has no business in the global include/linux/ hierarchy, so move
> > it back before anyone starts using it
On 02-06-16, 21:37, Michael Ellerman wrote:
> On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote:
> > On 02-06-16, 21:08, Michael Ellerman wrote:
> > > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote:
> > >
> > > > The policy is copied (unnecessarily) and is never freed. Fix it by just
>
On Thu, 2016-06-02 at 16:52 +0530, Viresh Kumar wrote:
> On 02-06-16, 21:08, Michael Ellerman wrote:
> > On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote:
> >
> > > The policy is copied (unnecessarily) and is never freed. Fix it by just
> > > getting a reference to the existing policy structu
On 06/02/2016 08:03 AM, Michael Ellerman wrote:
Can you send me a v2 with a change log that includes all that detail.
Sure; should have done it. Thanks.
--
Mauricio Faria de Oliveira
IBM Linux Technology Center
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On 02-06-16, 21:08, Michael Ellerman wrote:
> On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote:
>
> > The policy is copied (unnecessarily) and is never freed. Fix it by just
> > getting a reference to the existing policy structure and putting it
> > back.
> >
> > Signed-off-by: Viresh Kumar
On Thu, Jun 02, 2016 at 05:47:47PM +0800, xinhui wrote:
>
>
> On 2016年06月02日 17:33, Peter Zijlstra wrote:
> >
> >
> >I'm thinking one copy a day is quite enough...
> >
> sorry for noise.
> In recent days, our smtp server has some bugs that mails' Message-Id is
> changed by accident.
> So I resen
On Wed, 2016-06-01 at 16:04 +0530, Viresh Kumar wrote:
> The policy is copied (unnecessarily) and is never freed. Fix it by just
> getting a reference to the existing policy structure and putting it
> back.
>
> Signed-off-by: Viresh Kumar
When was it broken, always?
Cc: stable ?
cheers
_
On Thu, 2016-06-02 at 06:00 -0300, Mauricio Faria de Oliveira wrote:
> Hi Michael,
> On 06/02/2016 04:41 AM, Michael Ellerman wrote:
> > On Wed, 2016-06-01 at 17:16 -0300, Mauricio Faria de Oliveira wrote:
> > > Export cpu_to_core_id(). This will be used by the lpfc driver.
> >
> > Can you expla
I'm thinking one copy a day is quite enough...
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pseries has PowerVM support, the default option is Y.
Signed-off-by: Pan Xinhui
---
arch/powerpc/kernel/Makefile | 1 +
arch/powerpc/platforms/pseries/Kconfig | 8
2 files changed, 9 insertions(+)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index
pv-qspinlock core has pv_wait/pv_kick which will give a better
performace by yielding and kicking cpu at some cases.
lets support them by adding two corresponding helper functions.
Signed-off-by: Pan Xinhui
---
arch/powerpc/include/asm/spinlock.h | 4
arch/powerpc/lib/locks.c|
Base code to enable qspinlock on powerpc. this patch add some #ifdef
here and there. Although there is no paravirt related code, we can
successfully build a qspinlock kernel after apply this patch.
Signed-off-by: Pan Xinhui
---
arch/powerpc/include/asm/qspinlock.h | 26 +
As we need let pv-qspinlock-kernel run on all environment which might
have no powervm, we should runtime choose which qspinlock version to
use.
The default pv-qspinlock use native version. pv_lock initialization
should be done in bootstage with irq disabled. And if there is PHYP,
restore pv_lock_o
cmpxchg_release is light-wight than cmpxchg, On some arch like ppc,
barrier impact the performace too much.
Suggested-by: Boqun Feng
Signed-off-by: Pan Xinhui
---
kernel/locking/qspinlock_paravirt.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/locking/qspinlock_pa
pseries will use qspinlock by default.
Signed-off-by: Pan Xinhui
---
arch/powerpc/platforms/pseries/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/pseries/Kconfig
b/arch/powerpc/platforms/pseries/Kconfig
index bec90fb..f669323 100644
--- a/arch/powerpc/platfo
change from v4:
BUG FIX. thanks boqun reporting this issue.
struct __qspinlock has different layout in bigendian mahcine.
native_queued_spin_unlock() may write value to a wrong address. now fix
it.
sorry for not even doing a test on bigendian machine before!!!
cha
change from v4:
BUG FIX. thanks boqun reporting this issue.
struct __qspinlock has different layout in bigendian mahcine.
native_queued_spin_unlock() may write value to a wrong address. now fix
it.
sorry for not even doing a test on bigendian machine before!!!
cha
Radix invalidate control (RIC) is used to control which cache to flush
using tlb instructions. When doing a PID flush, we currently flush
everything including page walk cache. For address range flush, we flush
only the TLB. In the later patch, we add support for flushing only
page walk cache.
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